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US 4,113,783 AGranted
Reduction of triphenylphosphine oxide to triphenylphosphine
AssigneeTexas Alkyls, Inc.
InventorsDennis B. Malpass, G. Scott Yeargin
Life of this patent
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Abstract
Triphenylphosphine oxide is reduced to triphenylphosphine by the steps of (a) reacting triphenylphosphine oxide with a dialkylaluminum hydride either formed externally to the reaction system or generated in situ by the application of heat to a trialkylaluminum in which at least one alkyl group contains from 2 to 15 carbon atoms and in which the .beta.-carbon on said alkyl group is directly bonded to at least one hydrogen atom, and (b) hydrolyzing the product of step (a) to produce triphenylphosphine.
Claims17
A process for the conversion of triphenylphosphine oxide to triphenylphosphine comprising the steps of
- (a) reacting triphenylphosphine oxide with a dialkylaluminum hydride of which the alkyl groups are the same or different and each contain from 1 to 15 carbon atoms in a straight or branched chain;
- and
- (b) hydrolyzing the product of step (a).
Dependencies are inferred from the claim text.