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The disproportionation reactions of the unsaturated esters such as ethyl 3-butenoate, methyl 10-undecenoate, methyl oleate and 9-octadecenyl acetate were carried out using alkylborane-WCl6, -Mo(OEt)2Cl3 and various other catalysts. Both Et3B-WCl6 and Et3B-Mo(OEt)2Cl3 were found to be the effective catalysts for the above reactions.
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Nakamura et al. (1976) studied this question.
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