An efficient palladium catalyzed cross coupling of tributyl(vinyl)stannane with dialkoxy and dialkyl substituted 1,4-dihalobenzenes is described. This single-step coupling provides an efficient synthesis of functionalized 2,5-divinylbenzenes, which are useful precursors of 1,4-phenylenevinylene copolymers.
描述了一种高效的
钯催化交叉偶联反应,其中三丁基(
乙烯基)
锡与二烷氧基和二烷基取代的1,4-二卤苯进行偶联。这种单步偶联提供了功能化2,5-
二乙烯基苯的高效合成,这些化合物是1,4-
苯乙烯共聚物的有用前体。