Synthesis of Nitrogen Bridgehead Heterocycles with Phosphonates via a Novel Tandem Process
摘要:
A novel and efficient method was developed for the synthesis of nitrogen bridgehead heterocycles with phosphonates. Nitrogen containing five-membered heterocyclic aldehyde and diethyl 3-bromoprop-1-enylphosphonate were used as substrates. Bridgehead nitrogen-containing arylphosphonates were obtained via one-pot reaction including four steps: S(N)2, deprotonation followed by electron flow, nucleophic additon and elimination of water.
Synthesis of 7-cyanoindolizine derivatives via a tandem reaction
作者:Xian-Sheng Zhang、Bin Wang、Jiong Jia、Yan-Qing Ge、Jianwu Wang
DOI:10.1515/hc-2016-0223
日期:2017.4.1
Abstract: A series of 2-substituted and 2,3-disubstituted 5-cyanoindolizine derivatives were conveniently synthesized by a one-pot tandem reaction under mild conditions in moderate yields. The reaction mechanism was proposed.
Indolizines were synthesized by a novel tandem reaction at rt. The operation was simple and convenient. Various indolizine derivatives were obtained in good yields. The reaction mechanism was also proposed.