(phenylmethyl)-carbamic acid, compd. with benzenemethanamine (1:1);Benzyl-carbamidsaeure; Verbindung mit Benzylamin;benzyl-carbamic acid ; compound with benzylamine;benzylammonium N-benzylcarbamate;PhCH2-NH3(+) PhCH2-NHCOO(-);benzylazanium;N-benzylcarbamate
Environmentally benign decarboxylative <i>N</i>-, <i>O</i>-, and <i>S</i>-acetylations and acylations
作者:Santanu Ghosh、Anisha Purkait、Chandan K. Jana
DOI:10.1039/d0gc03731a
日期:——
An operationally simple and general method for acetylation and acylation of a wide variety of substrates (amines, alcohols, phenols, thiols, and hydrazones) has been reported. Meldrum's acid and its derivatives have been used as an air-stable, non-volatile, cost-effective, and easy to handle acetylating/acylating agent. Easily separable byproducts (CO2 and acetone) allowed the isolation of analytically
A convenient photocatalyst‐free method for the synthesis of redox‐active 1,2‐dihydro‐3H‐indazol‐3‐one derivatives from (2‐nitroaryl)methanol and amines was developed. The reaction proceeded efficiently at room temperature by irradiation of UV lightunder CO2 atmosphere (1.0 atm, flow) without any photocatalysts or additives. This mild, operationally simple method shows wide functional tolerance. The
ammonium carbamates with trimethylchlorosilane. Trimethylsilyl NN-dimethylcarbamate can be used for silylation of alcohols,phenols, and carboxylicacids. The silycarbamates react with carboxylicacid halides to give the corresponding acide amides. The reaction of trimethylsilyl carbamates with carboxylicanhydrides give the corresponding silyl carboxylate and acid amide, while the reaction with dicarboxylic
Direct NHC-catalysed redox amidation using CO<sub>2</sub> for traceless masking of amine nucleophiles
作者:Robert W. M. Davidson、Matthew J. Fuchter
DOI:10.1039/c6cc04639h
日期:——
We report an amine masking strategy for N-heterocyclic carbene (NHC)-catalysed redox amidation that couples release of the free nucleophile to catalytic turnover, and in doing so, enables direct reaction of electron-rich amines.
Mechanistic studies on the role of carbon dioxide in the synthesis of methylcarbamates from amines and dimethylcarbonate in the Presence of CO2.
作者:Michele Aresta、Eugenio Quaranta
DOI:10.1016/s0040-4020(01)80894-2
日期:1991.11
N-alkylmethylcarbamates have been synthesized fromamines and dimethylcarbonate (DMC) in the presence of carbondioxide. The catatylic rote of CO2 in the overall process has been investigated and elucidated.