| http://www.w3.org/ns/prov#value | - Alternatively, branched chain dienes may be prepared without any intramolecular dehalogenation or dehydrohalogenation step by applying the coupling reaction of the invention to a starting material R R XZ wherein the R group instead of being a halogenated alkyl group as above described is an alkenyl or halogenoalkenyl group. 9
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