Highly Selective Dehydrogenative Silylation of Ethylene Using the Bis(dihydrogen) Complex RuH2(H2)2(PCy3)2 as Catalyst Precursor
摘要:
The complex RuH[(eta(3)-C6H8)P(C6H11)(2)](C2H4)-(PCy(3)) (4), resulting from the dehydrogenation of a cyclohexyl ring of the bis(dihydrogen) complex RuH2(H-2)(2)(PCy(3))(2) (1) With C2H4, is a highly efficient catalyst for the selective dehydrogenative silylation of ethylene into the vinylsilane CH2=CHSiEt(3)(2). Total conversion of 1000 equiv of HSiEt(3) under 20 bar of C2H4 is achieved, in Less than 25 min at 17 degrees C, leading to 2 in 93% selectivity.