A sequential reaction process to assemble polysubstituted indolizidines, quinolizidines and quinolizidine analogues
摘要:
The omega-iodo-alpha,beta-alkynoates and their ketone, sulfone or phosphonate analogues react with delta-chloropropylamines in MeCN assisted with K2CO3 to undergo a sequential S(N)2/Michael addition/S(N)2/S(N)2 reaction process, giving polysubstituted indolizidines or quinolizidines in good to excellent yields. This sequential reaction process is also compatible with three other substituted alpha,beta-alkynoates, affording quinolizidine analogues in moderate to good yields. (c) 2006 Elsevier Ltd. All rights reserved.
A sequential reaction process to assemble polysubstituted indolizidines, quinolizidines and quinolizidine analogues
作者:Guorong Cai、Wei Zhu、Dawei Ma
DOI:10.1016/j.tet.2006.03.068
日期:2006.6
The omega-iodo-alpha,beta-alkynoates and their ketone, sulfone or phosphonate analogues react with delta-chloropropylamines in MeCN assisted with K2CO3 to undergo a sequential S(N)2/Michael addition/S(N)2/S(N)2 reaction process, giving polysubstituted indolizidines or quinolizidines in good to excellent yields. This sequential reaction process is also compatible with three other substituted alpha,beta-alkynoates, affording quinolizidine analogues in moderate to good yields. (c) 2006 Elsevier Ltd. All rights reserved.
Extending the Stetter Reaction with 1,6-Acceptors
作者:Katherine R. Law、Christopher S. P. McErlean
DOI:10.1002/chem.201303435
日期:2013.11.18
Pace Stetter: A new N‐heterocyclic carbene (NHC)‐catalysed transformation is described—the intramolecular vinylogous Stetterreaction. This transformation can be effected with both thiazolium and triazolium‐based catalysts, using aromatic and aliphatic aldehydes, employing α,β,γ,δ‐unsaturated esters, ketones, phosphonates and N‐acylpyrroles, and can be conducted enantioselectively (see scheme).
Pace Stetter:描述了一种新的N杂环卡宾(NHC)催化的转化-分子内乙烯基Stetter反应。可以使用噻唑鎓和三唑鎓类催化剂,使用芳族和脂族醛,使用α,β,γ,δ-不饱和酯,酮,膦酸酯和N-酰基吡咯进行这种转化,并且可以对映选择性地进行(参见方案)。