Synthesis of 1,4-dihydroquinoline derivatives under transition-metal-free conditions and their diverse applications
作者:Xue-Qiang Chu、You Zi、Hua Meng、Xiao-Ping Xu、Shun-Jun Ji
DOI:10.1039/c4ob00475b
日期:——
A transition-metal-free process for the synthesis of 1,4-dihydroquinoline derivatives starting from simple enaminones with aldehydes via intermolecular cascade cyclization in a one-pot protocol is developed. This methodology affords a variety of products in moderate to good yields. Particularly, the use of the enaminone fragment in 1,4-dihydroquinoline derivatives 3 as a leaving group for further diverse applications with C-nucleophiles is proved to be feasible.