Hydrosilanes Subject

Poly(hydrosilane)s have been successfully applied as processing stabilizers for organic polymeric materials subject to oxidative degradation. The degradation of polyolefins during processing takes place by a widely accepted... 

Catalytic C-H bond transformation is a very attractive research subject in organic and organometallic chemistry [1]. There are several procedures for C-H bond transformation. One is conversion of C-H bonds to C-Si bonds, i.e. the direct silylation of C-H bonds. Three procedures have been developed for silylation of C-H bonds - use of hydrosilanes (reaction 1 in Scheme 1), disilanes (reaction 2 in Scheme 1), and vinylsilanes (reaction 3 in Scheme 1) as silylating reagents. 

Hydrosilylation of alkenes or dienes comprises of addition of hydrosilanes to a C-C double bond mediated by a catalyst, usually an organometallic compound. These reactions have been the subject of two comprehensive reviews1 2. 

Halosilanes. Hydrosilane such as CCI4 and CH Br, in the Hydrogenation. The dou subjecting it to PdCl2 in HCCXJP reduces benzoylformic acid to m... 

The proposed mechanism based on product observation is depicted in (Scheme 16). Regioselective insertion of the proximal double bond of allene 31 into the Si-[Rh] bond of the hydrosilane-[Rh] oxidative adduct, HlRhJSiRs, affords intermediate D-L Subsequent allqme insertion forming the cyclic vinyl-Rh complex D-II followed by silane promoted reductive elimination provides the product 32 and the active Rh-Si complex. When allenynes that did not have substitutions on the alkyne terminus or on the distal allene double bonds were subjected to the optimized conditions, complex product mixtures were obtained. These... 

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