Tandem Regio- and Stereoselective Organocuprate-Mediated Bis-Allylic Substitutions
作者:R. Karl Dieter、Fenghai Guo
DOI:10.1021/ol800727f
日期:2008.5.1
anti-5-Acetoxy-4-halo-alpha,beta-enoates undergo sequential or tandem reactions with two different magnesium cuprate reagents to afford ant 2,3-dialkyl-4,5-enoates in high chemical yield and with excellent diastereoselectivity. the one-pot tandem procedure can be achieved with 30 mol % of CuCN and affords a rapid stereoselective combinatorial approach to vicinal disubstituted gamma,delta-enoates containing functionality at either end of the carbon chain for subsequent functional group elaboration. The methodology should provide a powerful practical strategy for acyclic stereoselection.
Riedel; Straube, Justus Liebigs Annalen der Chemie, 1909, vol. 367, p. 46