Hydrosilation, of dienes

Hydrosilations of dienes and alkynes have been studied, and in both cases single and double silylations are possible. For 1,3-dienes, both 1,2 and 1,4 addition products can be observed8,195 213 271-272. A Ziegler-type catalyst composed of nickel(II) pentadienoate and triethylaluminum is active in hydrosilylation of terminal alkynes, but this reaction is accompanied by oxidative dimerization of the alkyne (equation 101). The major product in most cases was the head-to-head dimer273. 

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