l‐Valine diethyl amide is the chiral auxiliary of choice to prepare opticallyactive aminodecalone scaffolds with quaternarystereocenter by enantioselective copper‐catalyzed Michael reaction followed by Robinson annulation. Intermediate products were further submitted to Fischer indole and Friedländer quinoline annulation.
v.Schickh, Angewandte Chemie, 1950, vol. 62, p. 547,554
作者:v.Schickh
DOI:——
日期:——
A simple and highly efficient procedure for construction of quaternary carbons centers by tributylphosphine catalyzed bis-Michael addition
作者:Da-Zhen Xu、Ming-Zhe Zhan、You Huang
DOI:10.1016/j.tet.2013.11.103
日期:2014.1
The tributylphosphine-catalyzed bis-Michael addition reaction of various kinds of a,13-unsaturated carbonyl compounds with active methylenes is described. This is a convenient and rapid method for generating quaternary carbons centers and useful procedure for the synthesis of branched core and highly substituted trans cyclohexanones. All the reactions were completed in 60 min and afford the corresponding products in excellent yields. (C) 2013 Elsevier Ltd. All rights reserved.
Substituted butyrolactones
申请人:ROHM &
公开号:US02839538A1
公开(公告)日:1958-06-17
The Synthesis of Pyrrolizidines<sup>1</sup>
作者:Nelson J. Leonard、Lillian Ruth Hruda、Frank W. Long