A general procedure for the synthesis of alkyl and aryl alkylcarbamates starting from the corresponding S-methyl N-alkyl-thiocarbamates is described. This procedure consists of three steps that are carried out in a one-pot fashion, without isolating the intermediate N-alkylcarbamoyl chlorides or alkyl isocyanates. All the target products were obtained in high yields (16 examples, average yield 91%)
An Easy and Efficient One-Step Procedure for the Preparation of Alkyl and Aryl Alkylcarbamates from<i>S</i>-Methyl<i>N</i>-Alkylthiocarbamates
作者:Rita Fochi、Iacopo Degani、Claudio Magistris
DOI:10.1055/s-2008-1067233
日期:2008.9
:: A general, one-step procedure for the synthesis of alkyl and aryl alkylcarbamates, by the direct reaction of S-methyl N-alkylthiocarbamates with alcohols or phenols in toluene at reflux in the presence of triethylamine, is reported. All the target products were obtained in high yield (15 examples, average yield 94%) and very high purity (>99.2%). The recovery of a co-product of industrial interest