One-Pot, Three-Step Preparation of Alkyl and Aryl Alkylcarbamates from <i>S</i>-Methyl <i>N</i>-Alkylthiocarbamates
作者:Rita Fochi、Emma Artuso、Iacopo Degani、Claudio Magistris
DOI:10.1055/s-2008-1072573
日期:2008.5
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%)
描述了从相应的 S-甲基 N-烷基-硫代氨基甲酸酯开始合成烷基和芳基烷基氨基甲酸酯的一般程序。该程序由以一锅方式进行的三个步骤组成,无需分离中间体 N-烷基氨基甲酰氯或异氰酸烷基酯。所有目标产物均以高收率获得(16 例,平均收率 91%)。值得注意的是回收工业上感兴趣的副产品二甲基二硫,每摩尔硫代氨基甲酸盐的量为半摩尔,试剂的完全利用。如果需要,烷基异氰酸酯也可以以高产率分离。