Nano-Iron Oxide as a Recyclable Catalyst for Intramolecular CN Cross-Coupling Reactions under Ligand-Free Conditions: One-Pot Synthesis of 1,4-Dihydroquinoline Derivatives
作者:Xiao-Jin Wu、Ran Jiang、Bing Wu、Xiao-Ming Su、Xiao-Ping Xu、Shun-Jun Ji
DOI:10.1002/adsc.200900481
日期:2009.12
The ligand-free nanoparticle ferroferric oxide catalytic system has been developed to promote the intramolecular CN cross-couplingreaction. With this protocol, various 1,4-dihydroquinolinederivatives were synthesized from o-halobenzaldehydes and β-enaminones in moderate to good yields.
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.