Coproduction of vinylidene alcohols and vinylidene hydrocarbons

Details Coproduction of vinylidene alcohols and vinylidene hydrocarbons Coproduction of vinylidene alcohols and vinylidene hydrocarbons

1995-11-03

1998-03-24

Ivy, C. Warren

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

556185, 556190, 585328, 585532, 585533, 585637, C07C 2904

Patent

active

057314802

ABSTRACT:
A process is described for coproducing vinylidene alcohol and vinylidene olefin. The process involves dimerizing one or more vinylolefins with an alkyl aluminum catalyst to form a first product mixture comprising at least vinylidene olefin and alkyl aluminum compound. The vinylidene olefin is then reacted with the alkyl aluminum compound under displacement conditions to form 1-olefin while concurrently removing the 1-olefin from the displacement reaction mixture to form a second product mixture comprising at least beta-branched alkyl aluminum compound. The second product mixture is treated with air or oxygen under mild oxidation conditions to form a third product mixture comprising at least beta-branched aluminum alkoxide. The beta-branched aluminum alkoxide is then hydrolyzed to form vinylidene alcohol. The process makes effective use of the alkyl aluminum catalyst both as a catalyst and as a reactant, and requires only a relatively small amount of reaction equipment.

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