Polarity-Reversible Conjugate Addition Tuned by Remote Electronic Effects
摘要:
A new concept, polarity-reversible conjugate addition, has been described, based on the findings that the polarity of a classical Michael acceptor can be reversed through remote electronic effects. In addition, the remote electronic effects are tunable, and both five- and six-membered nitrogen rings can be constructed starting from acyclic precursors having the same enone structure unit simply by varying a remote substituent in the molecules.
Base-catalyzed bicyclization of dialkyl glutaconates with cinnamoylacetamides: a synthetic strategy for isoquinolinedione derivatives
作者:Lei Li、Yu-Long Zhao、He Wang、Yi-Jin Li、Xianxiu Xu、Qun Liu
DOI:10.1039/c3cc46931j
日期:——
We report here that polysubstituted dihydroisoquinolones and isoquinolones can be constructed by the one-pot reaction of the readily available acyclic alpha,beta-unsaturated carbonyl precursors and dialkyl glutaconates under mild basic conditions (1-45 min for the former vs. 1-6 h for the latter) via the domino process involving [3+3] annulation/intramolecular aza-cyclization.
Polarity-Reversible Conjugate Addition Tuned by Remote Electronic Effects
作者:Yifei Li、Xianxiu Xu、Jing Tan、Peiqiu Liao、Jingping Zhang、Qun Liu
DOI:10.1021/ol902551m
日期:2010.1.15
A new concept, polarity-reversible conjugate addition, has been described, based on the findings that the polarity of a classical Michael acceptor can be reversed through remote electronic effects. In addition, the remote electronic effects are tunable, and both five- and six-membered nitrogen rings can be constructed starting from acyclic precursors having the same enone structure unit simply by varying a remote substituent in the molecules.