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本文叙述了聚-γ-(m-二苯膦苯基)丙基硅氧烷钯络合物的合成和它在烯烃氢化反应中所表现的催化活性。γ-(m-氯苯基)丙基三氯硅烷用无水乙醇酯化,得到γ-(m-氯苯基)丙基三乙氧基硅烷。后者以二苯膦钾膦化,烟雾状硅胶固载化。所得硅胶固载化的含膦聚合物与氯亚钯酸钠四水合物作用,即得γ-(m-二苯膦苯基)丙基硅氧烷钯络合物。这一络合物在烯烃氢化中显示很高的催化活性和与一般高分子络合钯催化剂不同的选择性。
This paper describes the synthesis of poly-γ- (m-diphenylphosphino phenyl) propylsiloxane palladium complex and its catalytic activity in the hydrogenation of olefins. γ- (m-Chlorophenyl) propyltrichlorosilane is esterified with absolute ethanol to give γ- (m-chlorophenyl) propyltriethoxysilane. The latter phosphine diphenylphosphine, smoke-like silica gel immobilized. The resulting silica gel-immobilized phosphine-containing polymer is reacted with sodium chlorodipalladate tetrahydrate to obtain a palladium complex of γ- (m-diphenylphosphinophenyl) propylsiloxane. This complex shows high catalytic activity in the hydrogenation of alkenes and a different selectivity than typical polymeric complexed palladium catalysts.