Tag: M.W=50-100

Lei, Gaiying published the artcileIn situ preparation of amphibious ZnO quantum dots with blue fluorescence based on hyperbranched polymers and their application in bio-imaging, COA of Formula: C2H5NO, the main research area is zinc oxide quantum dot blue fluorescence hyperbranched polymer; amphibious ZnO quantum dots; bio-imaging; blue fluorescence; hyperbranched polymers.

A new strategy for preparing amphibious ZnO quantum dots (QDs) with blue fluorescence within hyper-branched poly(ethylenimine)s (HPEI) was proposed in this paper. By changing [Zn2+]/[OH-] molar ratio and heating time, ZnO QDs with a quantum yields (QY) of 30% in ethanol were obtained. Benefiting from the amphibious property of HPEI, the ZnO/HPEI nanocomposites in ethanol could be dissolved in chloroform and water, acquiring a QY of 53%, chloroform and 11% in water. By this strategy, the ZnO/HPEI nano-composites could be applied in not only in optoelectronics, but also biomedical fields (such as bio-imaging and gene transfection). The bio-imaging application of water-soluble ZnO/HPEI nanocomposites was investigated and it was found that they could easily be endocytosed by the COS-7 cells, without transfection reagent, and they exhibited excellent biol. imaging behavior.

Polymers (Basel, Switzerland) published new progress about Dialysis Role: PEP (Physical, Engineering or Chemical Process), PRP (Properties), PROC (Process). 123-39-7 belongs to class amides-buliding-blocks, name is N-Methylformamide, and the molecular formula is C2H5NO, COA of Formula: C2H5NO.

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

Patel, Khushbu P. published the artcileGraphene Oxide: A Metal-Free Carbocatalyst for the Synthesis of Diverse Amides under Solvent-Free Conditions, Recommanded Product: N-Methylformamide, the main research area is amide preparation green chem solventless; amine carboxamide transamidation graphene oxide catalyst.

An environment-friendly, inexpensive, carbocatalyst, graphene oxide (GO) which promoted efficient, metal-free transamidation of various carboxamides RC(O)NH2 (R = Ph, pyridin-2-yl, H, Me, etc.) with aliphatic, cyclic, and aromatic amines NH(R1)(R2) [R1 = H, Ph; R2 = n-Bu, Ph, cyclohexyl, pyridin-2-yl, etc.; R1R2 = -(CH2)4-, -CH2CH2OCH2CH2-] and 2-aminothiophenol is demonstrated. The protocol is equally applicable to phthalimides such as 1H-isoindole-1,3(2H)-dione, 5-methyl-1H-isoindole-1,3(2H)-dione, ureas R3NHC(O)NH2 (R3 = H, Ph), and thioamide determining its adaptability. The oxygenated functionalities such as carbonyl (-C=O), epoxy (-O-), carboxyl (-COOH) and hydroxyl (-OH), present on graphene oxide surface impart acidic properties to the catalyst. The graphene oxide being heterogeneous in nature, work efficiently under solvent-free reaction conditions providing desired products RC(O)N(R1)(R2), I, R1NHC(O)NHR2 in good to excellent yields. The one-pot synthesis of 2,3-dihydro-5H-benzo[b]-1,4-thiazepin-4-one moiety by GO catalyzed Aza Michael addition followed by intramol. transamidation is also described. A plausible reaction mechanistic pathway involving H-bonding is discussed. The graphene oxide can be recycled and reused up to five cycles without much loss in catalytic activity.

Advanced Synthesis & Catalysis published new progress about Amines Role: RCT (Reactant), RACT (Reactant or Reagent). 123-39-7 belongs to class amides-buliding-blocks, name is N-Methylformamide, and the molecular formula is C2H5NO, Recommanded Product: N-Methylformamide.

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

Zhang, Feng published the artcileMoS2-Catalyzed transamidation reaction, Synthetic Route of 123-39-7, the main research area is amine amide molybdenum disulfide catalyst transamidation.

The MoS2-catalyzed transamidation reaction with high yields using N,N-dimethylformamide and other amides as carbonyl sources was developed. The protocol was simple, does not required any additive such as acid, base, ligand, etc., and encompassed a broad substrate scope for primary, secondary and heterocyclic amines. Moreover, the acetylation and propanylation of amines also could be achieved with good to excellent yield by this strategy.

Scientific Reports published new progress about Amines Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 123-39-7 belongs to class amides-buliding-blocks, name is N-Methylformamide, and the molecular formula is C2H5NO, Synthetic Route of 123-39-7.

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

Zhang, Feng published the artcileMetal- and solvent-free synthesis of amides using substitute formamides as an amino source under mild conditions, Name: N-Methylformamide, the main research area is tertiarybutyl arylperoxoate preparation potassium tertiary butoxide mediator amidation; arylamide preparation green chem.

An efficient and practical approach for amide synthesis was described. The reaction was conducted under metal- and solvent-free conditions at a mild temperature (40°) in air and readily available formamides were used as an amino source. This reaction was easily upgraded to the gram level with an excellent yield.

Scientific Reports published new progress about Aromatic amides Role: SPN (Synthetic Preparation), PREP (Preparation). 123-39-7 belongs to class amides-buliding-blocks, name is N-Methylformamide, and the molecular formula is C2H5NO, Name: N-Methylformamide.

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

Reis Conceicao, Nuno published the artcileKnoevenagel condensation reaction in supercritical carbon dioxide medium using a Zn(II) coordination polymer as catalyst, Product Details of C2H5NO, the main research area is zinc coordination polymer catalyst preparation benzaldehyde Knoevenagel condensation reaction.

The replacement of conventional organic solvents by the so-called “”green solvents”” is a usual approach to more sustainable chem. processes. Supercritical carbon dioxide (scCO2) has been successfully regarded as a candidate for such a purpose. Moreover, it possesses moderate critical pressure and temperature conditions and may be easily separated from the catalytic system by a simple depressurization. In the present work, the new Zn(II) coordination polymer [Zn(L1)(NMeF)]n·n(NMeF) (Zn-CP 1) is reported, being prepared by the solvothermal reaction of 5-{(pyren-4-ylmethyl)amino}isophthalic acid (H2L1) with Zn(NO3)2·6H2O in N-methylformamide (NMeF). The SCXRD anal. revealed that Zn-CP 1 has a 1D double chain type of structure. Its potential as catalyst was studied in the Knoevenagel condensation of benzaldehyde and malononitrile as a model reaction under mild conditions, in scCO2 medium. An increasing trend was observed in the reaction yield as we moved from aprotic (THF) to protic (EtOH and H2O) polar co-solvents, reaching the full conversion in the case of water. It was found that scCO2, in the absence of a protic co-solvent, is not the most suitable medium for this reaction. The catalyst can be recycled without a considerable loss of activity; SEM, PXRD, FT-IR and TGA analyzes indicate its high stability throughout the process.

Inorganica Chimica Acta published new progress about Crystal structure. 123-39-7 belongs to class amides-buliding-blocks, name is N-Methylformamide, and the molecular formula is C2H5NO, Product Details of C2H5NO.

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

Kharaneko, A. O. published the artcileSynthesis and Modification of Hetero-Fused Pyrazoles Derived from Methyl 1-(2-Oxo-2-phenylethyl)-3-phenyl-1H-pyrazole-5-carboxylate, Application In Synthesis of 123-39-7, the main research area is hetero fused pyrazole preparation.

A modified procedure has been proposed for the synthesis of 2,7-diphenyl-5,8-dihydro-4H-pyrazolo[5,1-d][1,2,5]triazepin-4-one, and the possibility of transformation of the latter to the pyrazolo[1,5-a]pyrazine system has been demonstrated. Functionalization of 2,7-diphenyl-5,8-dihydro-4H-pyrazolo[5,1-d][1,2,5]triazepin-4-one at the 4-position and fusion of a tetrazole or triazole ring at the C4-N5 bond have been performed.

Russian Journal of Organic Chemistry published new progress about Heterocyclization. 123-39-7 belongs to class amides-buliding-blocks, name is N-Methylformamide, and the molecular formula is C2H5NO, Application In Synthesis of 123-39-7.

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

Hornink, Milene Macedo published the artcileBiobased Spiroimides from Itaconic Acid and Formamides: Molecular Targets for a Novel Synthetic Application of Renewable Chemicals, Computed Properties of 123-39-7, the main research area is spiro dihydroquinolinone succinimide spiroindolinone glutarimide preparation; dihydroquinolinone indolinone itaconic acid anhydride formamide Fenton photochem flow.

Herein, a novel synthetic application of renewable chems., itaconic acid and formamides, is described. Proper exploitation of the reactivity of itaconic acid and formamide allows for the development of an efficient synthetic approach for the production of several new biobased spiroimides, spiro[dihydroquinolin-2-one-succinimides] I (R1 = H, Me, Cl, etc.; R2 = Me, Ph, Bn; R3 = H, Me) and spiro[indolin-2-one-glutarimides] II (R1 = H, OMe, CF3; R2 = Me, Bn; R3 = H, Me), in excellent overall yields (up to 98%).

Synthesis published new progress about Aromatic amines Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 123-39-7 belongs to class amides-buliding-blocks, name is N-Methylformamide, and the molecular formula is C2H5NO, Computed Properties of 123-39-7.

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

Kharaneko, A. O. published the artcileSynthesis of 3-Phenyl-1H-[1,4]oxazino[4,3-a]benzimidazol-1-one and Its Transformation into 4-Phenyl-2,5-dihydro-1H-[1,2,5]triazepino[5,4-a]benzimidazol-1-one, Safety of N-Methylformamide, the main research area is phenyl oxazinobenzimidazolone preparation; dihydrotriazepinobenzimidazolone preparation; phenylpyrazino benzimidazolone preparation; benzimidazole preparation.

A synthetic route was proposed to 3-phenyl-1H-[1,4]oxazino[4,3-a]benzimidazol-1-one I, which was the first representative of a new heterocyclic system. The transformation of the title compound I to 4-phenyl-2,5-dihydro-1H-[1,2,5]triazepino[5,4-a]benzimidazol-1-one II via reaction with hydrazine hydrate was studied.

Russian Journal of Organic Chemistry published new progress about Fused heterocyclic compounds Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 123-39-7 belongs to class amides-buliding-blocks, name is N-Methylformamide, and the molecular formula is C2H5NO, Safety of N-Methylformamide.

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

Zhu, Zhentong published the artcileLow-Noise Nanopore Enables In-Situ and Label-Free Tracking of a Trigger-Induced DNA Molecular Machine at the Single-Molecular Level, Synthetic Route of 123-39-7, the main research area is nanopore DNA machine.

Solid-state nanopores have shown special high potential in a label-free mol. assay, structure identification, and target-index at the single-mol. level, even though frustrating elec. baseline noise is still one of the major factors that limit the spatial resolution and signaling reliability of solid-state nanopores, especially in small target detection. Here the authors develop a significant and easy-operating noise-reduction approach via mixing organic solvents with high dielec. constants into a traditional aqueous electrolyte. The strategy is generally effective for pores made of different materials, such as the most commonly used conical glass (CGN) or SiNx. While the mechanism should be multisourced, MD simulations suggest the noise reduction may partially arise from the even ionic distribution caused by the addition of higher dielec. species. Among all solvents exptl. tested, the two with the highest dielec. constants, formamide and methylformamide, exhibit the best noise reduction effect for target detection of CGN. The power spectral d. at the low-frequency limit is reduced by nearly 3 orders with the addition of 20% formamide. The work qualifies the reliability of solid-state nanopores into much subtler scales of detection, such as dsDNAs under 100 bp. As a practical example, bare CGN is innovatively employed to perform in-situ tracking of trigger-responsive DNA machine forming oligomers.

Journal of the American Chemical Society published new progress about Glass Role: ARG (Analytical Reagent Use), BUU (Biological Use, Unclassified), TEM (Technical or Engineered Material Use), ANST (Analytical Study), USES (Uses), BIOL (Biological Study). 123-39-7 belongs to class amides-buliding-blocks, name is N-Methylformamide, and the molecular formula is C2H5NO, Synthetic Route of 123-39-7.

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

Zheng, Yong published the artcileNanophase Separation in Immiscible Double Network Elastomers Induces Synergetic Strengthening, Toughening, and Fatigue Resistance, Safety of N-Methylformamide, the main research area is nanophase immiscible network elastomer synergetic strengthening toughening fatigue resistance.

High modulus, toughness, and fatigue resistance are usually difficult to be obtained simultaneously in rubbery materials. Here, we report that by superimposing the nanophase separation structure in double network (DN) elastomers using immiscible polymers, the modulus, fracture energy, and energy release rate of fatigue threshold are enhanced all together by 13, 5, and 5 times, resp. We reveal that the interplay between the DN structure and the nanophase separation structure brings two effects synergistically: (1) formation of nanoclusters overstresses and homogenizes the sacrificial network, thereby remarkably increasing the modulus and yielding stress and (2) the nanoclusters act as viscoelastic nanofillers dissipating energy and pinning the crack propagation, thereby significantly enhancing toughness and fatigue resistance. This work provides a facile approach to superimpose high-order structures in DN materials for excellent mech. performance. The clarified synergetic effects should be universal for DN materials made of immiscible polymers. We believe that this work will facilitate more studies on elastomers and gels along this line.

Chemistry of Materials published new progress about Acrylic rubber, methoxyethyl acrylate-polyethylene glycol diacrylate Role: POF (Polymer in Formulation), PRP (Properties), SPN (Synthetic Preparation), TEM (Technical or Engineered Material Use), USES (Uses), PREP (Preparation). 123-39-7 belongs to class amides-buliding-blocks, name is N-Methylformamide, and the molecular formula is C2H5NO, Safety of N-Methylformamide.

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