PLATINUM CATALYZED HYDROSILYLATION OF ALKYNES - COMPARISON OF RATES OF ADDITION OF TERMINAL OLEFINS TO INTERNAL ALKYNES

被引:20
作者
LEWIS, LN
SY, KG
DONAHUE, PE
机构
[1] GE Research and Development, Schenectady
关键词
D O I
10.1016/0022-328X(92)83082-S
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The relative rates of platinum catalyzed hydrosilylation of terminal olefins versus internal alkynes were compared in competitive reactions. (EtO)3SiH added almost exclusively (97%) to PhC = CPh versus styrene. The reaction of (EtO)3SiH with equimolar amounts of 2-decyne and 1-hexene gave a 78:22 ratio of alkyne products 6/6' versus alkene product 7. The reaction of (EtO)3SiH with equimolar amounts of styrene and 1-phenyl-1-propyne gave a 78:22 ratio of alkyne products 10/10' to products 9. The silane, Me3SiOSiMe2H, reacted with equimolar amounts of 2-decyne and 1-hexene to give a 90:10 ratio of alkyne products 8/8' to alkene product 9. All of the products had E stereochemistry about the C = C double bond as determined by Si-29 NMR (3J(Si-H)).
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页码:165 / 172
页数:8
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