Highly efficient one-pot synthesis of fused pyrimidones from 2-heteroaryl amines and Morita–Baylis–Hillman carbonates<i>via</i>intermolecular cyclocondensation
作者:Surendra Babu Inturi、Biswajit Kalita、A. Jafar Ahamed
DOI:10.1080/00397911.2018.1479761
日期:2018.8.18
highly selective and efficient cyclocondensation reaction for construction of various 3-substituted-2H-pyrido[1,2-a]pyrimidin-2-ones and related fused pyrimidones from allylic carbonates and 2-heteroaryl amines has been developed. The transformation involves one-pot sequential aza-Michael addition, intramolecular acyl substitution, and [1,3]-H shift. The method is catalyst free, eco-friendly, scalable, and
摘要 开发了一种高选择性和高效的环缩合反应,用于从烯丙基碳酸酯和 2-杂芳基胺构建各种 3-取代-2H-吡啶并[1,2-a]嘧啶-2-酮和相关的稠合嘧啶酮。转化包括一锅连续的 aza-Michael 加成、分子内酰基取代和 [1,3]-H 移位。该方法无催化剂、环保、可扩展,反应时间短,无需后处理,无需柱纯化,具有广泛的官能团耐受性。图形概要