A Facile, Safe and Inexpensive Preparation of S-Methyl Arylcarbamothioates by Methylthiocarbonylation of Primary Arylamines with O,S-Dimethyl Carbonodithioate
作者:Rita Fochi、Iacopo Degani、Claudio Magistris
DOI:10.1055/s-0029-1219226
日期:2010.4
methylthiocarbonylation of primary arylamines to give S-methyl arylcarbamothioates. Optimal conditions involved a one-step procedure that was carried out at 45 ˚C in a solvent-free system, in the presence of triethyl(methyl)ammonium S-methyl carbonodithioate as a reaction promoter. The title products were obtained pure in yields that, with one exception, varied between 72 and 91% (average yield of the
ø,小号二甲基carbonodithioate提出作为可在伯烷基胺的methylthiocarbonylation给要使用的合适的和安全地处理试剂小号甲基arylcarbamothioates。最佳条件涉及一步步骤,该步骤在无溶剂系统中于45°C的条件下,在作为反应促进剂的三乙基(甲基)铵S-甲基碳二硫代硫酸盐存在下进行。获得的标题产物的收率纯净,除了一个例外,在72%至91%之间变化(所考虑的12个实例的平均收率为83%)。副产物S,S-二甲基二硫代碳酸盐也是有价值的试剂。 O,S-二甲基碳二硫代酸酯-芳基氨基甲硫酸酯-硫羰基化-S,S-二甲基碳二硫代酸酯-甲苯-2,4-二硫代氨基甲酸S,S-二甲基酯