A One-Pot Synthesis of 2-Aminopyrimidines from Ketones, Arylacetylenes, and Guanidine
作者:Elena Yu. Schmidt、Inna V. Tatarinova、Nadezhda I. Protsuk、Igor’ A. Ushakov、Boris A. Trofimov
DOI:10.1021/acs.joc.6b02233
日期:2017.1.6
The three-component reaction of ketones, arylacetylenes, and guanidine catalyzed by the KOBut/DMSO system leads to 2-aminopyrimidines in up to 80% yield. Depending on structure of the starting ketones, the aromatization of intermediate dihydropyrimidines occurs either with loss of hydrogen molecules or methylbenzenes. The latter process takes place in the ketones, in which one of the substituents is
KOBu t / DMSO系统催化的酮,芳基乙炔和胍的三组分反应可产生高达80%收率的2-氨基嘧啶。取决于起始酮的结构,中间体二氢嘧啶的芳构化在氢分子或甲基苯损失的情况下发生。后一种方法发生在酮中,其中一个取代基不是甲基。对于二烷基-,芳基(杂芳基)烷基-和环烷基酮而言,反应条件是容许的。