Highly Chemoselective and Stereoselective Conjugate Addition of Benzyl Copper Reagents to α-Oxoketene Dithioacetals

Article abstract of DOI:10.1016/0040-4039(95)00158-9

Benzyl copper reagents derived by transmetallation between benzylmagnesium chloride and Cu(I) species are shown to undergo conjugate addition - elimination with acyclic and cyclic α-oxoketene dithioacetals to afford the corresponding β-benzyl vinylogous t