Palladium- or Platinum-Catalyzed Novel Double Silylation of α-Diketones or a Benzoylformate with Hexamethyldisilane Affording 1,2-Bis(siloxy)ethenes or a Double Silylated Tartrate Derivative
作者:Hiroshi Yamashita、N. Prabhakar Reddy、Masato Tanaka
DOI:10.1246/cl.1993.315
日期:1993.2
α-Diketones (benzil, methyl phenyl diketone, acenaphthenequinone, camphorquinone) reacted with hexamethyldisilane in the presence of a Pd or Pt catalyst (PdCl2(PMe3)2, Pt2(dba)3-P(OCH2)3CEt, etc.) to give the corresponding 1,2-bis(trimethylsiloxy)ethenes in excellent to moderate yields, while methyl benzoylformate provided dimethyl 2,3-diphenyl-2,3-bis(O-trimethylsilyl)tartrate.
α-二酮(苯基苯酮、甲基苯基二酮、萘醌、樟脑醌)在Pd或Pt催化剂(PdCl2(PMe3)2、Pt2(dba)3-P(OCH2)3CEt等)存在下与六甲基二硅烷反应,生成相应的1,2-双(三甲基硅氧基)乙烯,产率从优良到中等,而甲基苯甲酰甲酸盐则提供了二甲基2,3-二苯基-2,3-双(O-三甲基硅基)酒石酸盐。