A novel three-component reaction between isocyanides, alcohols or thiols and elemental sulfur: a mild, catalyst-free approach towards <i>O</i>-thiocarbamates and dithiocarbamates
作者:András György Németh、György Miklós Keserű、Péter Ábrányi-Balogh
DOI:10.3762/bjoc.15.155
日期:——
new multicomponent reaction has been developed between isocyanides, sulfur and alcohols or thiols under mild reaction conditions to afford O-thiocarbamates and dithiocarbamates in moderate to good yields. The one-pot reaction cascade involves the formation of an isothiocyanate intermediate, thus a catalyst-free synthesis of isothiocyanates, as valuable building blocks from isocyanides and sulfur is proposed
在温和的反应条件下,异氰酸酯,硫与醇或硫醇之间已开发出一种新的多组分反应,以中等至良好的收率得到O-硫代氨基甲酸酯和二硫代氨基甲酸酯。一锅法反应级联反应涉及形成异硫氰酸酯中间体,因此也提出了无催化剂的异硫氰酸酯合成方法,因为还提出了由异氰酸酯和硫形成的有价值的结构单元。合成过程适合现代有机化学家的需求,因为它可以耐受各种官能团,因此经济实惠且易于扩展。