Transition‐Metal‐Free Homocoupling of Organomagnesium Compounds

Abstract

Without palladium or copper: A wide range of functionalized Grignard compounds were coupled by using diphenoquinone 1 as an electron acceptor. The oxidative dimerization of alkenylmagnesium reagents proceeds with complete retention of the stereochemistry (see scheme; TBDMS=tert-butyldimethylsilyl).