A mild and general and stereospecific cross-coupling reaction of unsymmetrical 1, 4-bissilyl- 1, 3-butadienes has been accomplished. By the use of either a benzyldimethylsilyl or 2- thienyldimethylsilyl unit at one end of the dienylsilanol, a selective cross-coupling could be effected under mildly basic conditions (KOTMS) to afford 4-aryl-1, 3-dienylsilanes in excellent yield for a wide range of aryl and alkenyl coupling partners. The second cross- ...
