Decarboxylative cyclization of allylic cyclic carbamates: applications to the total synthesis of (-)-codonopsine
摘要:
Decarboxylative cyclization of allylic cyclic carbamates 1 leading to 2-substituted DELTA-3-piperidines and -pyrrolidines, as well as its application to the total synthesis of (-)-codonopsine, is described.
The Asymmetric Aza-silyl-Prins Reaction: Synthesis of Enantiopure Piperidines
作者:Ramana R. Mittapalli、Sebastien J. J. Guesné、Robert J. Parker、Wim T. Klooster、Simon J. Coles、John Skidmore、Adrian P. Dobbs
DOI:10.1021/acs.orglett.8b03283
日期:2019.1.18
The design and development of the first asymmetric aza-silyl-Prins reaction is reported, giving rise to valuable and diverse piperidines and pipecolic acid derivatives in both high yields and as single enantiomers. The creation of a novel chiral auxiliary-homoallylic amine for the aza-silyl-Prins reaction is essential to its success.
Decarboxylative cyclization of allylic cyclic carbamates: applications to the total synthesis of (-)-codonopsine
作者:Chia Lin J. Wang、Joseph C. Calabrese
DOI:10.1021/jo00014a004
日期:1991.7
Decarboxylative cyclization of allylic cyclic carbamates 1 leading to 2-substituted DELTA-3-piperidines and -pyrrolidines, as well as its application to the total synthesis of (-)-codonopsine, is described.