Tag: 200-300

Fei, Xiuzhu et al. published their research in Cellulose (Dordrecht, Netherlands) in 2015 | CAS: 10543-57-4

N,N-(Ethane-1,2-diyl)bis(N-acetylacetamide) (cas: 10543-57-4) belongs to amides. Because of the greater electronegativity of oxygen, the carbonyl (C=O) is a stronger dipole than the N–C dipole. The presence of a C=O dipole and, to a lesser extent a N–C dipole, allows amides to act as H-bond acceptors. Amides are not in general accessible by the direct condensation of amines with carboxylic acids for two reasons: first, both components are readily deactivated by a transfer of a proton from the acid to the amine and second, the hydroxy unit on the carbonyl of the acid is a relatively poor leaving group. Nevertheless, the formation of five- and six-membered rings is often surprisingly simple provided that other factors can be brought into play to assist in the condensation.Reference of 10543-57-4

Analysis of factors affecting the performance of activated peroxide systems on bleaching of cotton fabric was written by Fei, Xiuzhu;Yao, Jinlong;Du, Jinmei;Sun, Chang;Xiang, Zhonglin;Xu, Changhai. And the article was included in Cellulose (Dordrecht, Netherlands) in 2015.Reference of 10543-57-4 This article mentions the following:

A screening experiment was designed to investigate the possible factors affecting the performance of activated peroxide systems (APSs) on bleaching of cotton fabric. The design of experiment comprised thirteen factors such as type of bleach activator (BA), concentration of bleach activator ([BA]), molar ratio of hydrogen peroxide to bleach activator ([H2O2]:[BA]), type of peroxide stabilizer (PS), concentration of peroxide stabilizer ([PS]), type of wetting agent (WA), concentration of wetting agent ([WA]), pH value of bleach bath (pH), bleaching temperature (T), bleaching time (t), liquor-to-goods ratio, cotton substrate (C), and water quality (W). The bleaching performance of APSs was accessed by measuring the degree of whiteness of bleached cotton fabric which was defined as the response factor for statistical anal. The screening anal. revealed that C was the most significant factor affecting the performance of APSs on bleaching of cotton fabric, followed by T, BA, [BA], pH, PS, and [H2O2]:[BA]. Addnl., two-factor interactions were found as well between C and T, T and pH, C and BA, C and [BA], T and [BA], W and [PS], C and PS, and pH and [H2O2]:[BA]. These significant main effects and two-factor interactions were interpreted in details for a better understanding of the performance of APSs on bleaching of cotton fabric. The findings of this study are valuable for further establishment and optimization of APSs for low-temperature bleaching of cotton fabric. In the experiment, the researchers used many compounds, for example, N,N-(Ethane-1,2-diyl)bis(N-acetylacetamide) (cas: 10543-57-4Reference of 10543-57-4).

N,N-(Ethane-1,2-diyl)bis(N-acetylacetamide) (cas: 10543-57-4) belongs to amides. Because of the greater electronegativity of oxygen, the carbonyl (C=O) is a stronger dipole than the N–C dipole. The presence of a C=O dipole and, to a lesser extent a N–C dipole, allows amides to act as H-bond acceptors. Amides are not in general accessible by the direct condensation of amines with carboxylic acids for two reasons: first, both components are readily deactivated by a transfer of a proton from the acid to the amine and second, the hydroxy unit on the carbonyl of the acid is a relatively poor leaving group. Nevertheless, the formation of five- and six-membered rings is often surprisingly simple provided that other factors can be brought into play to assist in the condensation.Reference of 10543-57-4

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

Kawai, Kentaro et al. published their research in Chemistry – A European Journal in 2018 | CAS: 192436-83-2

4-Bromo-N-methoxy-N-methylbenzamide (cas: 192436-83-2) belongs to amides. Amides are pervasive in nature and technology. Proteins and important plastics like Nylons, Aramid, Twaron, and Kevlar are polymers whose units are connected by amide groups (polyamides); these linkages are easily formed, confer structural rigidity, and resist hydrolysis. Amides are stable compounds. The lower-melting members (such as acetamide) can be readily purified by fractional distillation. Most amides are solids which have low solubilities in water.Safety of 4-Bromo-N-methoxy-N-methylbenzamide

Weinreb Amide Directed Versatile C-H Bond Functionalization under (η5-Pentamethylcyclopentadienyl)cobalt(III) Catalysis was written by Kawai, Kentaro;Bunno, Youka;Yoshino, Tatsuhiko;Matsunaga, Shigeki. And the article was included in Chemistry – A European Journal in 2018.Safety of 4-Bromo-N-methoxy-N-methylbenzamide This article mentions the following:

The (η5-pentamethylcyclopentadienyl)cobalt(III) (Cp*CoIII)-catalyzed C-H bond functionalization of aromatic, heteroaromatic and α,β-unsaturated Weinreb amides was explored. The C-H allylation using allyl carbonate and a perfluoroalkene/oxidative alkenylation with Et acrylate/iodination using N-iodosuccinimide and amidation with dioxazolones were catalyzed by Cp*Co(CO)I2 in presence of cationic silver salt and silver acetate to afford various synthetically useful building blocks like RC(O)N(Me)(OMe) [R = 2-H2C=CHCH2C6H4, MeC=CHCH=CHCO2Et, 2-I-C6H4, etc.]. Mechanistic studies of C-H allylation disclosed that the C-H activation step was rate determining and virtually irreversible. In the experiment, the researchers used many compounds, for example, 4-Bromo-N-methoxy-N-methylbenzamide (cas: 192436-83-2Safety of 4-Bromo-N-methoxy-N-methylbenzamide).

4-Bromo-N-methoxy-N-methylbenzamide (cas: 192436-83-2) belongs to amides. Amides are pervasive in nature and technology. Proteins and important plastics like Nylons, Aramid, Twaron, and Kevlar are polymers whose units are connected by amide groups (polyamides); these linkages are easily formed, confer structural rigidity, and resist hydrolysis. Amides are stable compounds. The lower-melting members (such as acetamide) can be readily purified by fractional distillation. Most amides are solids which have low solubilities in water.Safety of 4-Bromo-N-methoxy-N-methylbenzamide

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

Zhou, Li et al. published their research in Polymer Chemistry in 2021 | CAS: 2387-23-7

1,3-Dicyclohexylurea (cas: 2387-23-7) belongs to amides. In primary and secondary amides, the presence of N–H dipoles allows amides to function as H-bond donors as well. Thus amides can participate in hydrogen bonding with water and other protic solvents; the oxygen atom can accept hydrogen bonds from water and the N–H hydrogen atoms can donate H-bonds. Amides can be recrystallised from large quantities of water, ethanol, ethanol/ether, aqueous ethanol, chloroform/toluene, chloroform or acetic acid. The likely impurities are the parent acids or the alkyl esters from which they have been made. The former can be removed by thorough washing with aqueous ammonia followed by recrystallisation, whereas elimination of the latter is by trituration or recrystallisation from an organic solvent.HPLC of Formula: 2387-23-7

Structure and activity relationship studies of N-heterocyclic olefin and thiourea/urea catalytic systems: application in ring-opening polymerization of lactones was written by Zhou, Li;Wang, Zhenyu;Xu, Guangqiang;Lv, Chengdong;Wang, Qinggang. And the article was included in Polymer Chemistry in 2021.HPLC of Formula: 2387-23-7 This article mentions the following:

A highly efficient and controllable ring-opening polymerization of lactones (δ-valerolactone, ε-caprolactone and rac-lactide) has been achieved by using N-heterocyclic olefin (NHO) and thiourea/urea (TU/U) catalytic systems. This catalytic system showed high ring-opening activity and stereoselectivity, delivering biodegradable polyesters with high chain-end fidelity, controlled mol. weights and narrow molar mass dispersities. A detailed investigation of the structure-activity relationship was performed by exploring five NHOs and fourteen TUs/Us. For a fixed NHO, when the acidity of TUs/Us decreases, the polymerization mechanism changes from the (thio)urea anion to the neutral cooperative activation mode, and the catalytic activity first increases and decreases, displaying a highly effective interval. For a given TU or U, as the basicity of NHOs increases, the catalytic performance improves correspondingly. Besides, highly isoselective ROP of rac-LA (Pm = 0.93) at -78° has been also achieved, highlighting the versatility of the NHO/TU(U) system. These findings enrich the type of TU/U and base organocatalyst. In the experiment, the researchers used many compounds, for example, 1,3-Dicyclohexylurea (cas: 2387-23-7HPLC of Formula: 2387-23-7).

1,3-Dicyclohexylurea (cas: 2387-23-7) belongs to amides. In primary and secondary amides, the presence of N–H dipoles allows amides to function as H-bond donors as well. Thus amides can participate in hydrogen bonding with water and other protic solvents; the oxygen atom can accept hydrogen bonds from water and the N–H hydrogen atoms can donate H-bonds. Amides can be recrystallised from large quantities of water, ethanol, ethanol/ether, aqueous ethanol, chloroform/toluene, chloroform or acetic acid. The likely impurities are the parent acids or the alkyl esters from which they have been made. The former can be removed by thorough washing with aqueous ammonia followed by recrystallisation, whereas elimination of the latter is by trituration or recrystallisation from an organic solvent.HPLC of Formula: 2387-23-7

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

Tian, Zhenyu et al. published their research in Science of the Total Environment in 2021 | CAS: 2387-23-7

1,3-Dicyclohexylurea (cas: 2387-23-7) belongs to amides. Because of the greater electronegativity of oxygen, the carbonyl (C=O) is a stronger dipole than the N–C dipole. The presence of a C=O dipole and, to a lesser extent a N–C dipole, allows amides to act as H-bond acceptors. The presence of the amide group –C(=O)N– is generally easily established, at least in small molecules. It can be distinguished from nitro and cyano groups in IR spectra. Amides exhibit a moderately intense νCO band near 1650 cm−1. By 1H NMR spectroscopy, CONHR signals occur at low fields. In X-ray crystallography, the C(=O)N center together with the three immediately adjacent atoms characteristically define a plane.Application In Synthesis of 1,3-Dicyclohexylurea

Suspect and non-target screening of contaminants of emerging concern in streams in agricultural watersheds was written by Tian, Zhenyu;Wark, David A.;Bogue, Kevin;James, C. Andrew. And the article was included in Science of the Total Environment in 2021.Application In Synthesis of 1,3-Dicyclohexylurea This article mentions the following:

Surface water runoff is an important source of water contamination affecting nearby rivers and streams. Many rural creeks are documented habitats for important aquatic species and the focus of restoration activities. In this study, we collected creek water samples in watersheds with a range of com.-to-agricultural land use during rain events, and applied suspect and non-target screening with high-resolution mass spectrometry (HRMS) to characterize the occurrence of contaminants of emerging concern (CECs). In total, 58 CECs were identified, and 36 of them were confirmed and semi-quantified with reference standards Pesticides were detected in all land use, including urban/com. areas. Some pesticides were observed at concentrations of >10,000 ng/L demonstrating the strong contamination input during rain events. Five pesticides (azoxystrobin, fludioxonil, 4-hydroxy-chlorothalonil, imidacloprid, 2-methyl-4-chlorophenoxyacetic acid) were prioritized based on their risk quotients. HRMS chem. profiles demonstrated the wide range of chem. exposures in a given stream system and that compounds associated with specific land uses occur across land uses. Temporal trends suggested that some CECs remain present in creek water for months, resulting in chronic exposures across the life stages of aquatic species. These findings highlight the potential for contamination from agricultural runoff and the associated ecol. risk to aquatic species. Suspect and non-target screening revealed the chronic occurrence of emerging contaminants in streams in agricultural catchments during rain events. In the experiment, the researchers used many compounds, for example, 1,3-Dicyclohexylurea (cas: 2387-23-7Application In Synthesis of 1,3-Dicyclohexylurea).

1,3-Dicyclohexylurea (cas: 2387-23-7) belongs to amides. Because of the greater electronegativity of oxygen, the carbonyl (C=O) is a stronger dipole than the N–C dipole. The presence of a C=O dipole and, to a lesser extent a N–C dipole, allows amides to act as H-bond acceptors. The presence of the amide group –C(=O)N– is generally easily established, at least in small molecules. It can be distinguished from nitro and cyano groups in IR spectra. Amides exhibit a moderately intense νCO band near 1650 cm−1. By 1H NMR spectroscopy, CONHR signals occur at low fields. In X-ray crystallography, the C(=O)N center together with the three immediately adjacent atoms characteristically define a plane.Application In Synthesis of 1,3-Dicyclohexylurea

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

Soika, Julia et al. published their research in ACS Catalysis in 2022 | CAS: 192436-83-2

4-Bromo-N-methoxy-N-methylbenzamide (cas: 192436-83-2) belongs to amides. Amides are pervasive in nature and technology. Proteins and important plastics like Nylons, Aramid, Twaron, and Kevlar are polymers whose units are connected by amide groups (polyamides); these linkages are easily formed, confer structural rigidity, and resist hydrolysis. Amides are not in general accessible by the direct condensation of amines with carboxylic acids for two reasons: first, both components are readily deactivated by a transfer of a proton from the acid to the amine and second, the hydroxy unit on the carbonyl of the acid is a relatively poor leaving group. Nevertheless, the formation of five- and six-membered rings is often surprisingly simple provided that other factors can be brought into play to assist in the condensation.Electric Literature of C9H10BrNO2

Organophotocatalytic N-O Bond Cleavage of Weinreb Amides: Mechanism-Guided Evolution of a PET to ConPET Platform was written by Soika, Julia;McLaughlin, Calum;Nevesely, Tomas;Daniliuc, Constantin G.;Molloy, John. J.;Gilmour, Ryan. And the article was included in ACS Catalysis in 2022.Electric Literature of C9H10BrNO2 This article mentions the following:

Mechanistically guided reaction development demonstrates the involvement of a photoinduced electron transfer (PET) mechanism, and this has been further advanced to a consecutive photoinduced electron transfer (ConPET) manifold and this has significantly expanded the scope of compatible substrates RC(O)N(CH3)OCH3 (R = 4-cyanomethyl, pyrazin-2-yl, penta-1,3-dien-1-yl, etc.). In the experiment, the researchers used many compounds, for example, 4-Bromo-N-methoxy-N-methylbenzamide (cas: 192436-83-2Electric Literature of C9H10BrNO2).

4-Bromo-N-methoxy-N-methylbenzamide (cas: 192436-83-2) belongs to amides. Amides are pervasive in nature and technology. Proteins and important plastics like Nylons, Aramid, Twaron, and Kevlar are polymers whose units are connected by amide groups (polyamides); these linkages are easily formed, confer structural rigidity, and resist hydrolysis. Amides are not in general accessible by the direct condensation of amines with carboxylic acids for two reasons: first, both components are readily deactivated by a transfer of a proton from the acid to the amine and second, the hydroxy unit on the carbonyl of the acid is a relatively poor leaving group. Nevertheless, the formation of five- and six-membered rings is often surprisingly simple provided that other factors can be brought into play to assist in the condensation.Electric Literature of C9H10BrNO2

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

Dong, Jie et al. published their research in Yinran in 2010 | CAS: 10543-57-4

N,N-(Ethane-1,2-diyl)bis(N-acetylacetamide) (cas: 10543-57-4) belongs to amides. Amides include many other important biological compounds, as well as many drugs like paracetamol, penicillin and LSD. Low-molecular-weight amides, such as dimethylformamide, are common solvents. The presence of the amide group –C(=O)N– is generally easily established, at least in small molecules. It can be distinguished from nitro and cyano groups in IR spectra. Amides exhibit a moderately intense νCO band near 1650 cm−1. By 1H NMR spectroscopy, CONHR signals occur at low fields. In X-ray crystallography, the C(=O)N center together with the three immediately adjacent atoms characteristically define a plane.Electric Literature of C10H16N2O4

Low temperature peroxide bleaching process of milk protein fiber fabric with activation system was written by Dong, Jie;Wu, Ming-Hua;Xia, Jian-ming. And the article was included in Yinran in 2010.Electric Literature of C10H16N2O4 This article mentions the following:

To solve the yellowing problem of vinylon-milk protein fiber under conditions of high temperature and concentrated alkali, peroxide bleaching of milk protein fiber fabric was carried out with activation system of sodium nonanoyloxy benzene sulfonate, tetraacetylethylenediamine and gluconate. Optimum bleaching process was determined by orthogonal test as follows: H2O2/HK 15/15 g/L, alkali 0.5 g/L, bleaching at 70 °C for 70-80 min with bath ratio 1:30. Compared with traditional peroxide bleaching and sodium hydrosulfite reduction bleaching, it was indicated that the low temperature bleaching was a feasible and efficient process. In the experiment, the researchers used many compounds, for example, N,N-(Ethane-1,2-diyl)bis(N-acetylacetamide) (cas: 10543-57-4Electric Literature of C10H16N2O4).

N,N-(Ethane-1,2-diyl)bis(N-acetylacetamide) (cas: 10543-57-4) belongs to amides. Amides include many other important biological compounds, as well as many drugs like paracetamol, penicillin and LSD. Low-molecular-weight amides, such as dimethylformamide, are common solvents. The presence of the amide group –C(=O)N– is generally easily established, at least in small molecules. It can be distinguished from nitro and cyano groups in IR spectra. Amides exhibit a moderately intense νCO band near 1650 cm−1. By 1H NMR spectroscopy, CONHR signals occur at low fields. In X-ray crystallography, the C(=O)N center together with the three immediately adjacent atoms characteristically define a plane.Electric Literature of C10H16N2O4

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

Wieckowska, Anna et al. published their research in Journal of Organic Chemistry in 2011 | CAS: 116332-61-7

N-Methoxy-N-methyl-4-(trifluoromethyl)benzamide (cas: 116332-61-7) belongs to amides. Amides are pervasive in nature and technology. Proteins and important plastics like Nylons, Aramid, Twaron, and Kevlar are polymers whose units are connected by amide groups (polyamides); these linkages are easily formed, confer structural rigidity, and resist hydrolysis. As a result of interactions such as these, the water solubility of amides is greater than that of corresponding hydrocarbons. These hydrogen bonds are also have an important role in the secondary structure of proteins.Electric Literature of C10H10F3NO2

Microwave-Assisted Synthesis of Weinreb and MAP Aryl Amides via Pd-Catalyzed Heck Aminocarbonylation Using Mo(CO)6 or W(CO)6 was written by Wieckowska, Anna;Fransson, Rebecca;Odell, Luke R.;Larhed, Mats. And the article was included in Journal of Organic Chemistry in 2011.Electric Literature of C10H10F3NO2 This article mentions the following:

A simple and expedient process for the Heck aminocarbonylative synthesis of Weinreb and MAP amide acylating agents, from aryl halides, is reported. This methodol. utilizes solid sources of CO making it readily accessible to chemists working in small-scale laboratory applications. In the experiment, the researchers used many compounds, for example, N-Methoxy-N-methyl-4-(trifluoromethyl)benzamide (cas: 116332-61-7Electric Literature of C10H10F3NO2).

N-Methoxy-N-methyl-4-(trifluoromethyl)benzamide (cas: 116332-61-7) belongs to amides. Amides are pervasive in nature and technology. Proteins and important plastics like Nylons, Aramid, Twaron, and Kevlar are polymers whose units are connected by amide groups (polyamides); these linkages are easily formed, confer structural rigidity, and resist hydrolysis. As a result of interactions such as these, the water solubility of amides is greater than that of corresponding hydrocarbons. These hydrogen bonds are also have an important role in the secondary structure of proteins.Electric Literature of C10H10F3NO2

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

Ghasemi, Mehran et al. published their research in Synthesis in 2020 | CAS: 2387-23-7

1,3-Dicyclohexylurea (cas: 2387-23-7) belongs to amides. Because of the greater electronegativity of oxygen, the carbonyl (C=O) is a stronger dipole than the N–C dipole. The presence of a C=O dipole and, to a lesser extent a N–C dipole, allows amides to act as H-bond acceptors. Amides can be recrystallised from large quantities of water, ethanol, ethanol/ether, aqueous ethanol, chloroform/toluene, chloroform or acetic acid. The likely impurities are the parent acids or the alkyl esters from which they have been made. The former can be removed by thorough washing with aqueous ammonia followed by recrystallisation, whereas elimination of the latter is by trituration or recrystallisation from an organic solvent.Application In Synthesis of 1,3-Dicyclohexylurea

Palladium/Norbornene Chemistry in the Synthesis of Polycyclic Indolines with Simple Nitrogen Sources was written by Ghasemi, Mehran;Jafarpour, Farnaz;Habibi, Azizollah. And the article was included in Synthesis in 2020.Application In Synthesis of 1,3-Dicyclohexylurea This article mentions the following:

An efficient procedure has been developed to synthesize indoline derivatives, e.g., I, through a palladium-catalyzed Heck reaction/C-H activation/dual amination cascade in one pot. This constitutes the first intermol. catalytic approach to directly access N-alkylindolines with a broad substrate scope in the absence of any ligands. This method highlights the use of readily available amines and ureas as the required nitrogen sources in building up the indoline core. In the experiment, the researchers used many compounds, for example, 1,3-Dicyclohexylurea (cas: 2387-23-7Application In Synthesis of 1,3-Dicyclohexylurea).

1,3-Dicyclohexylurea (cas: 2387-23-7) belongs to amides. Because of the greater electronegativity of oxygen, the carbonyl (C=O) is a stronger dipole than the N–C dipole. The presence of a C=O dipole and, to a lesser extent a N–C dipole, allows amides to act as H-bond acceptors. Amides can be recrystallised from large quantities of water, ethanol, ethanol/ether, aqueous ethanol, chloroform/toluene, chloroform or acetic acid. The likely impurities are the parent acids or the alkyl esters from which they have been made. The former can be removed by thorough washing with aqueous ammonia followed by recrystallisation, whereas elimination of the latter is by trituration or recrystallisation from an organic solvent.Application In Synthesis of 1,3-Dicyclohexylurea

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

Shepard, Scott M. et al. published their research in Journal of the American Chemical Society in 2021 | CAS: 2387-23-7

1,3-Dicyclohexylurea (cas: 2387-23-7) belongs to amides. Amides include many other important biological compounds, as well as many drugs like paracetamol, penicillin and LSD. Low-molecular-weight amides, such as dimethylformamide, are common solvents. As a result of interactions such as these, the water solubility of amides is greater than that of corresponding hydrocarbons. These hydrogen bonds are also have an important role in the secondary structure of proteins.Formula: C13H24N2O

Synthesis of α,δ-Disubstituted Tetraphosphates and Terminally-Functionalized Nucleoside Pentaphosphates was written by Shepard, Scott M.;Kim, Hyehwang;Bang, Qing Xin;Alhokbany, Norah;Cummins, Christopher C.. And the article was included in Journal of the American Chemical Society in 2021.Formula: C13H24N2O This article mentions the following:

The anion [P4O11]2-, employed as its bis(triphenylphosphine)iminium (PPN) salt, is shown herein to be a versatile reagent for nucleophile tetraphosphorylation. Treatment under anhydrous conditions with an alkylamine base and a nucleophile (HNuc1), such as an alc. (neopentanol, cyclohexanol, 4-methylumbelliferone, and Boc-Tyr-OMe), an amine (propargylamine, diethylamine, morpholine, 3,5-dimethylaniline, and isopropylamine), dihydrogen phosphate, phenylphosphonate, azide ion, or methylidene triphenylphosphorane, results in nucleophile substituted tetrametaphosphates ([P4O11Nuc1]3-) as mixed PPN and alkylammonium salts in 59% to 99% yield. Treatment of the resulting functionalized tetrametaphosphates with a second nucleophile (HNuc2), such as hydroxide, a phenol (4-methylumbelliferone), an amine (propargylamine and ethanolamine), fluoride, or a nucleoside monophosphate (uridine monophosphate, deoxyadenosine monophosphate, and adenosine monophosphate), results in ring opening to linear tetraphosphates bearing one nucleophile on each end ([Nuc1(PO3)3PO2Nuc2]4-). When necessary, these linear tetraphosphates are purified by reverse phase or anion exchange HPLC, yielding triethylammonium or ammonium salts in 32% to 92% yield from [PPN]2[P4O11]. Phosphorylation of methylidene triphenylphosphorane as Nuc1 yields a new tetrametaphosphate-based ylide ([Ph3PCHP4O11]3-, 94% yield). Wittig olefination of 2′,3′-O-isopropylidene-5′-deoxy-5′-uridylaldehyde using this ylide results in a 3′-deoxy-3′,4′-didehydronucleotide derivative, isolated as the triethylammonium salt in 54% yield. In the experiment, the researchers used many compounds, for example, 1,3-Dicyclohexylurea (cas: 2387-23-7Formula: C13H24N2O).

1,3-Dicyclohexylurea (cas: 2387-23-7) belongs to amides. Amides include many other important biological compounds, as well as many drugs like paracetamol, penicillin and LSD. Low-molecular-weight amides, such as dimethylformamide, are common solvents. As a result of interactions such as these, the water solubility of amides is greater than that of corresponding hydrocarbons. These hydrogen bonds are also have an important role in the secondary structure of proteins.Formula: C13H24N2O

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

Papadopoulos, Athanasios et al. published their research in Journal of Supercritical Fluids in 2013 | CAS: 10543-57-4

N,N-(Ethane-1,2-diyl)bis(N-acetylacetamide) (cas: 10543-57-4) belongs to amides. The solubilities of amides and esters are roughly comparable. Typically amides are less soluble than comparable amines and carboxylic acids since these compounds can both donate and accept hydrogen bonds. Tertiary amides, with the important exception of N,N-dimethylformamide, exhibit low solubility in water. Amides can be recrystallised from large quantities of water, ethanol, ethanol/ether, aqueous ethanol, chloroform/toluene, chloroform or acetic acid. The likely impurities are the parent acids or the alkyl esters from which they have been made. The former can be removed by thorough washing with aqueous ammonia followed by recrystallisation, whereas elimination of the latter is by trituration or recrystallisation from an organic solvent.Name: N,N-(Ethane-1,2-diyl)bis(N-acetylacetamide)

A semi-quantitative approach for analyzing low-volatile organic compounds in house dust using an SFE method: Significant common features and particular differences of the extracts was written by Papadopoulos, Athanasios;Vlachogiannis, Diamando;Maggos, Thomas;Sfetsos, Athanasios;Karayiannis, Miltiades I.. And the article was included in Journal of Supercritical Fluids in 2013.Name: N,N-(Ethane-1,2-diyl)bis(N-acetylacetamide) This article mentions the following:

A number of samples have been collected from various indoor environments located in a semi-rural area in north-western Italy, for extraction with supercritical carbon dioxide (CO2) and anal. of low volatility organic compounds on house dust. The investigation was based on a survey anal. approach aiming at the identification of the organic content of indoor dust. The quantification of the content of the compounds was obtained with a semi-quant. method, incorporating three pre-defined concentration ranges. The classes of compounds, mostly detected in the indoor dust samples analyzed, were fatty acids and some of their esters, n-alkanes, phthalates and alcs. Other less frequently found classes were other esters, phenols, aliphatic aldehydes and ketones. The compounds that were identified in all or in most of the house dust samples appeared predominantly in high concentration ranges while compounds detected scarcely were measured mainly in low concentrations The exptl. study verified that the most important emission sources for the organic compounds detected in the indoor environment were a wide variety of plastic materials and human activities (e.g., cooking). Particular features of some extracts were attributed to specific actions that took place in the house prior or during sampling, and/or to the materials used in the house construction or heating methods. Among the compounds identified as prominent in the house dust samples were the phthalates, of major interest with regard to their impact on human health. In the experiment, the researchers used many compounds, for example, N,N-(Ethane-1,2-diyl)bis(N-acetylacetamide) (cas: 10543-57-4Name: N,N-(Ethane-1,2-diyl)bis(N-acetylacetamide)).

N,N-(Ethane-1,2-diyl)bis(N-acetylacetamide) (cas: 10543-57-4) belongs to amides. The solubilities of amides and esters are roughly comparable. Typically amides are less soluble than comparable amines and carboxylic acids since these compounds can both donate and accept hydrogen bonds. Tertiary amides, with the important exception of N,N-dimethylformamide, exhibit low solubility in water. Amides can be recrystallised from large quantities of water, ethanol, ethanol/ether, aqueous ethanol, chloroform/toluene, chloroform or acetic acid. The likely impurities are the parent acids or the alkyl esters from which they have been made. The former can be removed by thorough washing with aqueous ammonia followed by recrystallisation, whereas elimination of the latter is by trituration or recrystallisation from an organic solvent.Name: N,N-(Ethane-1,2-diyl)bis(N-acetylacetamide)

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics