Category: 192436-83-2

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

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

Alves Esteves, C. Henrique et al. published their research in Organic Letters in 2017 | CAS: 192436-83-2

4-Bromo-N-methoxy-N-methylbenzamide (cas: 192436-83-2) belongs to amides. The amide group is called a peptide bond when it is part of the main chain of a protein, and an isopeptide bond when it occurs in a side chain, such as in the amino acids asparagine and glutamine. Ionic, or saltlike, amides are strongly alkaline compounds ordinarily made by treating ammonia, an amine, or a covalent amide with a reactive metal such as sodium.Quality Control of 4-Bromo-N-methoxy-N-methylbenzamide

Pyruvate Enolate Arylation and Alkylation: OBO Ester Protected Pyruvates as Useful Reagents in Organic Synthesis was written by Alves Esteves, C. Henrique;Hall, Christopher J. J.;Smith, Peter D.;Donohoe, Timothy J.. And the article was included in Organic Letters in 2017.Quality Control of 4-Bromo-N-methoxy-N-methylbenzamide This article mentions the following:

The protected pyruvate equivalent I (R = H) underwent chemoselective monoarylation with aryl bromides and selected aryl chlorides in the presence of Pd(dtbpf)Cl2 {dtbpf = 1,1′-bis[di(tert-butyl)phosphino]ferrocene} using NaOt-Bu as base in THF to yield protected arylpyruvates such as I [R = 4-MeC6H4, 2-MeC6H4, 2,4,6-Me3C6H2, 2-FC6H4, 4-F3CC6H4, 4-ClC6H4, 3-MeOC6H4, 4-TBDMSOC6H4, 4-Me2NC6H4, 2-H2C:CHC6H4, 4-H2C:CHC6H4, 4-MeOMeNCOC6H4, 2-thienyl, 4-(4-morpholinylcarbonyl)C6H4, 5-benzothienyl, 1-Me-5-indolyl, 8-isoquinolinyl, Ph, 9-anthracenyl, 4-MeOC6H4]. Sequential diarylations or one-pot arylation-alkylation sequences were also performed to yield a variety of substituted protected arylpyruvates such as II. Arylpyruvate orthoesters were converted to Et arylpyruvates using p-toluenesulfonic acid and ethanol in 63-91% yields; a protected arylpyruvate orthoester was converted directly to the corresponding arylpyruvic acid. In the experiment, the researchers used many compounds, for example, 4-Bromo-N-methoxy-N-methylbenzamide (cas: 192436-83-2Quality Control of 4-Bromo-N-methoxy-N-methylbenzamide).

4-Bromo-N-methoxy-N-methylbenzamide (cas: 192436-83-2) belongs to amides. The amide group is called a peptide bond when it is part of the main chain of a protein, and an isopeptide bond when it occurs in a side chain, such as in the amino acids asparagine and glutamine. Ionic, or saltlike, amides are strongly alkaline compounds ordinarily made by treating ammonia, an amine, or a covalent amide with a reactive metal such as sodium.Quality Control of 4-Bromo-N-methoxy-N-methylbenzamide

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

Jin, Jianwen et al. published their research in Nature Communications in 2021 | CAS: 192436-83-2

4-Bromo-N-methoxy-N-methylbenzamide (cas: 192436-83-2) 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.Recommanded Product: 4-Bromo-N-methoxy-N-methylbenzamide

Copper(I)-catalyzed site-selective C(sp3)-H bond chlorination of ketones, (E)-enones and alkylbenzenes by dichloramine-T was written by Jin, Jianwen;Zhao, Yichao;Kyne, Sara Helen;Farshadfar, Kaveh;Ariafard, Alireza;Chan, Philip Wai Hong. And the article was included in Nature Communications in 2021.Recommanded Product: 4-Bromo-N-methoxy-N-methylbenzamide This article mentions the following:

Here, a copper(I)-catalyzed synthetic method for the efficient site-selective C(sp3)-H bond chlorination of ketones, (E)-enones and alkylbenzenes by dichloramine-T at room temperature were reported. A key feature of the broad substrate scope is tolerance to unsaturation, which would normally pose an immense challenge in chemoselective aliphatic C-H bond functionalization. By unlocking dichloramine-T’s potential as a chlorine radical atom source, the product site-selectivities achieved were among the most selective in alkane functionalization and should find widespread utility in chem. synthesis. This was exemplified by the late-stage site-selective modification of a number of natural products and bioactive compounds and gram-scale preparation and formal synthesis of two drug mols. In the experiment, the researchers used many compounds, for example, 4-Bromo-N-methoxy-N-methylbenzamide (cas: 192436-83-2Recommanded Product: 4-Bromo-N-methoxy-N-methylbenzamide).

4-Bromo-N-methoxy-N-methylbenzamide (cas: 192436-83-2) 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.Recommanded Product: 4-Bromo-N-methoxy-N-methylbenzamide

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

Yahata, Kenzo et al. published their research in Organic Letters in 2014 | CAS: 192436-83-2

4-Bromo-N-methoxy-N-methylbenzamide (cas: 192436-83-2) belongs to amides. Compared to amines, amides are very weak bases and do not have clearly defined acid–base properties in water. On the other hand, amides are much stronger bases than esters, aldehydes, and ketones. 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.Related Products of 192436-83-2

Selective Transformations of Carbonyl Functions in the Presence of α,β-Unsaturated Ketones: Concise Asymmetric Total Synthesis of Decytospolides A and B was written by Yahata, Kenzo;Minami, Masaki;Watanabe, Kei;Fujioka, Hiromichi. And the article was included in Organic Letters in 2014.Related Products of 192436-83-2 This article mentions the following:

Enones selectively react with a combination of PPh3 and TMSOTf to produce phosphonium silyl enol ethers, which work as protective groups of enones during the reduction of other carbonyl functions and can be easily deprotected to regenerate parent enones at workup. Thus, enone PhCH:CHCOMe reacted with 3-decanone in the presence of PPh3/TMSOTf followed by DIBAL-H reduction and K2CO3/MeOH to give 3-decanol in 96% yield. Treating keto-enones such as 4-MeCOC6H4CH:CHCOMe to the same reaction conditions gave the corresponding selectively reduced product, e.g., 4-MeCH(OH)C6H4CH:CHCOMe in 82% yield. Furthermore, the first ketone selective alkylations in the presence of enones were also accomplished. This in situ protection method was applied to concise asym. total syntheses of decytospolides A and B I (R = H, COMe, resp.). In the experiment, the researchers used many compounds, for example, 4-Bromo-N-methoxy-N-methylbenzamide (cas: 192436-83-2Related Products of 192436-83-2).

4-Bromo-N-methoxy-N-methylbenzamide (cas: 192436-83-2) belongs to amides. Compared to amines, amides are very weak bases and do not have clearly defined acid–base properties in water. On the other hand, amides are much stronger bases than esters, aldehydes, and ketones. 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.Related Products of 192436-83-2

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

Muir, Calum W. et al. published their research in Organic & Biomolecular Chemistry in 2013 | CAS: 192436-83-2

4-Bromo-N-methoxy-N-methylbenzamide (cas: 192436-83-2) belongs to amides. The amide group is called a peptide bond when it is part of the main chain of a protein, and an isopeptide bond when it occurs in a side chain, such as in the amino acids asparagine and glutamine. 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 4-Bromo-N-methoxy-N-methylbenzamide

Synthesis of functionalised 4H-quinolizin-4-ones via tandem Horner-Wadsworth-Emmons olefination/cyclisation was written by Muir, Calum W.;Kennedy, Alan R.;Redmond, Joanna M.;Watson, Allan J. B.. And the article was included in Organic & Biomolecular Chemistry in 2013.Application In Synthesis of 4-Bromo-N-methoxy-N-methylbenzamide This article mentions the following:

4H-Quinolizin-4-ones are a unique class of heterocycle with valuable physicochem. properties and which are emerging as key pharmacophores for a range of biol. targets. A tandem Horner-Wadsworth-Emmons olefination/cyclization method has been developed to allow facile access to substituted 4H-quinolizin-4-ones encoded with a range of functional groups. E.g., tandem Horner-Wadsworth-Emmons olefination/cyclization of 1-phenyl-2-(pyridin-2-yl)ethanone (I) with tri-Et phosphonoacetate gave 92% 4H-quinolizin-4-one derivative (II). I was prepared as 3:1 keto:enol and approx. 3.8:1 enol olefin stereoisomers. In the experiment, the researchers used many compounds, for example, 4-Bromo-N-methoxy-N-methylbenzamide (cas: 192436-83-2Application In Synthesis of 4-Bromo-N-methoxy-N-methylbenzamide).

4-Bromo-N-methoxy-N-methylbenzamide (cas: 192436-83-2) belongs to amides. The amide group is called a peptide bond when it is part of the main chain of a protein, and an isopeptide bond when it occurs in a side chain, such as in the amino acids asparagine and glutamine. 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 4-Bromo-N-methoxy-N-methylbenzamide

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

Massignan, Leonardo et al. published their research in Angewandte Chemie, International Edition in 2020 | CAS: 192436-83-2

4-Bromo-N-methoxy-N-methylbenzamide (cas: 192436-83-2) belongs to amides. Amides can be viewed as a derivative of a carboxylic acid RC(=O)OH with the hydroxyl group –OH replaced by an amine group −NR′R″; or, equivalently, an acyl (alkanoyl) group RC(=O)− joined to an amine group. Amides can be freed from solvent or water by drying below their melting points. These purifications can also be used for sulfonamides and acid hydrazides.COA of Formula: C9H10BrNO2

C-H Oxygenation Reactions Enabled by Dual Catalysis with Electrogenerated Hypervalent Iodine Species and Ruthenium Complexes was written by Massignan, Leonardo;Tan, Xuefeng;Meyer, Tjark H.;Kuniyil, Rositha;Messinis, Antonis M.;Ackermann, Lutz. And the article was included in Angewandte Chemie, International Edition in 2020.COA of Formula: C9H10BrNO2 This article mentions the following:

The catalytic generation of hypervalent iodine(III) reagents by anodic electrooxidation was orchestrated towards an unprecedented electrocatalytic C-H oxygenation of weakly coordinating aromatic amides and ketones. Thus, catalytic quantities of iodoarenes in concert with catalytic amounts of ruthenium(II) complexes set the stage for versatile C-H activations with ample scope and high functional group tolerance. Detailed mechanistic studies by experiment and computation substantiate the role of the iodoarene as the electrochem. relevant species towards C-H oxygenations with electricity as a sustainable oxidant and mol. hydrogen as the sole byproduct. Para-Selective C-H oxygenations likewise proved viable in the absence of directing groups. In the experiment, the researchers used many compounds, for example, 4-Bromo-N-methoxy-N-methylbenzamide (cas: 192436-83-2COA of Formula: C9H10BrNO2).

4-Bromo-N-methoxy-N-methylbenzamide (cas: 192436-83-2) belongs to amides. Amides can be viewed as a derivative of a carboxylic acid RC(=O)OH with the hydroxyl group –OH replaced by an amine group −NR′R″; or, equivalently, an acyl (alkanoyl) group RC(=O)− joined to an amine group. Amides can be freed from solvent or water by drying below their melting points. These purifications can also be used for sulfonamides and acid hydrazides.COA of Formula: C9H10BrNO2

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

Colella, Marco et al. published their research in Angewandte Chemie, International Edition in 2020 | CAS: 192436-83-2

4-Bromo-N-methoxy-N-methylbenzamide (cas: 192436-83-2) 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. In simple aromatic amides, fragmentation occurs on both sides of the carbonyl group. If a hydrogen is available in N-substituted aromatic amides, it tends to migrate and form an aromatic amine and the loss of a ketene.Reference of 192436-83-2

Fluoro-Substituted Methyllithium Chemistry: External Quenching Method Using Flow Microreactors was written by Colella, Marco;Tota, Arianna;Takahashi, Yusuke;Higuma, Ryosuke;Ishikawa, Susumu;Degennaro, Leonardo;Luisi, Renzo;Nagaki, Aiichiro. And the article was included in Angewandte Chemie, International Edition in 2020.Reference of 192436-83-2 This article mentions the following:

The external quenching method based on flow microreactors allows the generation and use of short-lived fluoro-substituted methyllithium reagents, such as fluoromethyllithium, fluoroiodomethyllithium, and fluoroiodostannylmethyllithium. Highly chemoselective reactions were developed, opening new opportunities in the synthesis of fluorinated mols. using fluorinated organometallics. In the experiment, the researchers used many compounds, for example, 4-Bromo-N-methoxy-N-methylbenzamide (cas: 192436-83-2Reference of 192436-83-2).

4-Bromo-N-methoxy-N-methylbenzamide (cas: 192436-83-2) 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. In simple aromatic amides, fragmentation occurs on both sides of the carbonyl group. If a hydrogen is available in N-substituted aromatic amides, it tends to migrate and form an aromatic amine and the loss of a ketene.Reference of 192436-83-2

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

Johnson, Thomas et al. published their research in Organic Letters in 2016 | CAS: 192436-83-2

4-Bromo-N-methoxy-N-methylbenzamide (cas: 192436-83-2) 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. 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.Category: amides-buliding-blocks

Palladium-Catalyzed α-Arylation of Vinylogous Esters for the Synthesis of γ,γ-Disubstituted Cyclohexenones was written by Johnson, Thomas;Pultar, Felix;Menke, Friedericke;Lautens, Mark. And the article was included in Organic Letters in 2016.Category: amides-buliding-blocks This article mentions the following:

A palladium-catalyzed α-arylation of cyclic vinylogous esters to form products that are converted in one step to γ-alkyl-γ-aryl-substituted cyclohexenones is reported. This Pd-catalyzed reaction proceeds at room temperature, is generally high-yielding, and uses an amount of a com. available catalyst as low as 0.25 mol %. The scope of aryl bromides is particularly broad, and alkenyl bromides can also be used. This two-step protocol, comprising α-arylation and reductive transposition, can be performed in one pot and is applicable to gram-scale synthesis. In the experiment, the researchers used many compounds, for example, 4-Bromo-N-methoxy-N-methylbenzamide (cas: 192436-83-2Category: amides-buliding-blocks).

4-Bromo-N-methoxy-N-methylbenzamide (cas: 192436-83-2) 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. 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.Category: amides-buliding-blocks

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

Phetcharawetch, Jongkonporn et al. published their research in European Journal of Organic Chemistry in 2017 | CAS: 192436-83-2

4-Bromo-N-methoxy-N-methylbenzamide (cas: 192436-83-2) 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 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.Related Products of 192436-83-2

Synthesis of Difluoromethyl Ketones from Weinreb Amides, and Tandem Addition/Cyclization of o-Alkynylaryl Weinreb Amides was written by Phetcharawetch, Jongkonporn;Betterley, Nolan M.;Soorukram, Darunee;Pohmakotr, Manat;Reutrakul, Vichai;Kuhakarn, Chutima. And the article was included in European Journal of Organic Chemistry in 2017.Related Products of 192436-83-2 This article mentions the following:

[Difluoro(phenylsulfanyl)methyl]trimethylsilane (PhSCF2SiMe3) underwent a fluoride-induced nucleophilic addition to the carbonyl group of Weinreb amides to provide the corresponding difluoro(phenylsulfanyl)methyl ketones I (R = Ph, 3-MeOC6H4, 2-BrC6H4, cyclohexyl, n-heptyl, etc.). These were converted into difluoromethyl ketones through selective reductive cleavage of the phenylsulfanyl group. The reaction of o-alkynyl Weinreb amides derived from benzoic acid derivatives resulted in the formation of cyclized products II (R = Ph, 4-MeOC6H4, 4-BrC6H4, etc.) through a 5-exo-dig cyclization. In the experiment, the researchers used many compounds, for example, 4-Bromo-N-methoxy-N-methylbenzamide (cas: 192436-83-2Related Products of 192436-83-2).

4-Bromo-N-methoxy-N-methylbenzamide (cas: 192436-83-2) 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 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.Related Products of 192436-83-2

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