Enantioselective Direct Vinylogous Michael Addition of Functionalized Furanones to Nitroalkenes Catalyzed by an Axially Chiral Guanidine Base
作者:Masahiro Terada、Kenichi Ando
DOI:10.1021/ol200415u
日期:2011.4.15
The highly syn-diastereo- and enantioselectivedirectvinylogousMichaeladdition of α-thio substituted furanones with conjugate nitroalkenes was demonstrated using an axially chiral guanidine base catalyst. The method provides facile access to enantioenriched α,γ-functionalized butenolides that can be further manipulated, thereby rendering them useful synthetic intermediates.