The reaction of thioesters with nitriles. A new synthetic approach to the preparation of substituted 4-alkylthio- and 4-arylthiopyrimidine derivatives
作者:Antonio Herrera、Roberto Martı́nez-Alvarez、Pedro Ramiro
DOI:10.1016/s0040-4020(03)01133-5
日期:2003.9
S-Alkyl and S-aryl thioesters react with nitriles in the presence of triflic anhydride to form substituted 4-alkylthio- and 4-arylthiopyrimidines. However, when methyl thiocyanate is used as nitrile, dithioimidocarbonates are formed. A mechanism to explain these differences is postulated.
S-烷基和S-芳基
硫酯在
三氟甲磺酸酐存在下与腈反应形成取代的4-烷
硫基嘧啶和4-芳基
硫嘧啶。但是,当使用
硫氰酸甲酯作为腈时,会形成二
硫代亚
氨基
碳酸酯。提出了解释这些差异的机制。