Enynes coupling with allyl chloride

Nickel-catalysed coupling of enynes (46) with allyl chlorides has been reported to occur in the presence of zinc the reaction gives rise to the cyclic products (47) in good yields.71... 

The coupling of allylic chlorides with trimethylsilylalkynes in the presence of [PdCl2(PhCN)a] also exhibits good regio- and stereo-selective control to give 4-trimethylsilyl-5-chloro-l,4( )-dienes. Furthermore, upon treatment with fluoride, these produce the corresponding 1,4-enynes. Dicyclopentadienylzirconium diene complexes are readily carbonylated, and the adducts, after hydrolysis with acid, afford cyclopent-3-enones, sometimes in synthetically useful yields. ... 

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