Synthesis of 7,8,9-Trisubstituted
Dihydropurine Derivatives via a ‘<i>tert</i>-Amino Effect’ Cyclization
作者:Qun Dang、Xu Bai、Xin Che、Lianyou Zheng
DOI:10.1055/s-2008-1078212
日期:——
7,8,9-Trisubstituted dihydropurine derivatives were prepared from 5-amino-4-(N,N-disubstituted)aminopyrimidines and aromatic aldehydes via a cascade of reactions. The key transformation for the reaction is a [1,6]-hydrogen shift due to a ‘tert-amino effect’.
通过一系列反应,从5-氨基-4-(N,N-二取代)氨基嘧啶和芳香醛合成了7,8,9-三取代二氢嘌呤衍生物。该反应的关键转化是由于“叔氨效应”的[1,6]-氢迁移。