(E)-1-Tri-n-butylstannyl-2-
trimethylsilylethylene can be used in the Pd0-catalyzed cross coupling of vinyl and aryl halides
or triflates;1,2 a source of β-trimethylsilylvinyllithium.
Preparation
bis(tri-n-butylstannyl)ethylene is treated
successively with molar equivalents of n-butyllithium and
chlorotrimethylsilane to give (E)-1-tri-n-butylstannyl-2-
trimethylsilylethylene.