Yu-Fang Zhang, Wen-Di Duan, Jingjing Chen
Mar 7, 2019
Citations
0
Influential Citations
12
Citations
Journal
The Journal of organic chemistry
Abstract
A base-promoted cascade reaction of 3-(1-alkynyl)chromones with pyridinium ylides has been developed to afford a novel chromeno[2,3- d]azepine scaffold in an efficient and economic manner. This tandem process involves multiple reactions including a Michael addition/deprotonation/alkyne-allene isomerization/cyclization and the subsequent 1,2-addition under mild conditions without a transition metal catalyst.