Production of dialkylaluminum hydrides

Details Production of dialkylaluminum hydrides Production of dialkylaluminum hydrides

C - Chemistry, Metallurgy

07

F

260/432.5

C07F 5/06 (2006.01)

Patent

CA 1082724

PRODUCTION OF DIALKYLALUMINUM HYDRIDES Abstract of the Disclosure Dialkylaluminum hydrides are produced by subjecting a mixed aluminum alkyl having the formula R2AIR' to pyrolysis. R is methyl, ethyl, n-alkyl or an alkyl group which has no hydrogen atoms on the carbon atom .beta. to the aluminum. R' is an ?- or .beta. branched alkyl group having the formula Image in which one R" is hydrogen and the other is alkyl and R'''is alkyl. The mixed aluminum alkyl R2AlR' can be obtained either by reaction of two aluminum alkyls: 2R3Al + R'3Al? 3R2AlR' or by reaction of a trialkylaluminum with a dialkyl- aluminum hydride: 2R3Al + R?AlH? 2R2AlR' + R2AlH, in which case one third of the desired hydride is synthesized. The dialkyl aluminum hydrides are known to be suitable co-catalysts in the polymerization of olefin and di-olefin and as reducing agents for a variety of organic functional groups.

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