New Convenient Strategy for Annulation of Pyrimidines to Thiophenes or Furans via the One-pot Multistep Cascade Reaction of 1<i>H</i>-Tetrazoles with Aliphatic Amines
作者:Nazariy T. Pokhodylo、Olga Ya. Shyyka、Vasyl S. Matiychuk、Mykola D. Obushak
DOI:10.1021/co5001376
日期:2015.7.13
high-yield synthetic method for 2-R(3),R(4)-amino-5-R(1)-6-R(2)-thieno[2,3-d]pyrimidin-4(3H)-ones, 2-R(3),R(4)-amino-5-R(1)-6-R(2)-thieno[3,2-d]pyrimidin-4(3H)-ones, and benzofuro[3,2-d]pyrimidin-4(3H)-ones preparation has been developed. The reaction proceeded without using solvents and included several steps. A variety of thieno[2,3-d]pyrimidine and thieno[3,2-d]pyrimidine derivatives with substituents
一种通用,便捷,高效且高产率的2-R(3),R(4)-氨基-5-R(1)-6-R(2)-噻吩并[2,3-d]嘧啶合成方法-4(3H)-ones,2-R(3),R(4)-amino-5-R(1)-6-R(2)-thieno [3,2-d]嘧啶-4(3H) -ones和苯并呋喃[3,2-d]嘧啶-4(3H)-ones制剂已经开发出来。反应在不使用溶剂的情况下进行,包括几个步骤。从取代的烷基2-(1H-四唑-1-基)噻吩-3高收率获得了各种具有不同性质取代基的噻吩并[2,3-d]嘧啶和噻吩并[3,2-d]嘧啶衍生物用脂肪族胺处理后,分别生成-羧酸盐,3-(1H-四唑-1-基)噻吩-2-羧酸酯和3-(1H-四唑-1-基)苯并呋喃-2-羧酸酯。