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Several methods are known for the preparation of dienyl zirconocene derivatives such as the hydrozirconation of enynes, the stereospecific reaction of zirconacyclopentadiene derivatives with electrophiles, the reaction of organozirconocene derivatives with carbenoid reagents, and the reaction of vinyl zirconocenes with vinyl halides. All these described methodologies lead to the expected dienyl zirconocenes...
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