Magnesium Ethoxide Promoted Conversion of Nitriles to Amidines and Its Application in 5,6-Dihydroimidazobenzoxazepine Synthesis
作者:Michael E. Dalziel、Julie A. Deichert、Diane E. Carrera、Danial Beaudry、Chong Han、Haiming Zhang、Remy Angelaud
DOI:10.1021/acs.orglett.8b00824
日期:2018.5.4
Magnesium ethoxide has been shown to be a mild, safe, and scalable alternative to trimethylaluminum for the direct addition of amines to aryl nitriles to access cyclic amidines. A variety of electronically diverse oxa-, thia-, and diazepine products were successfully synthesized in moderate to high yields. Further elaboration of these compounds to 5,6-dihydroimidazobenzoxazepines, a privileged class