Preparation of arylphosphines
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United States of America Patent
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Nov 20, 2001
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N/A
app pub date -
Nov 15, 2000
filing date -
Jun 30, 1998
priority date (Note) -
Expired
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Abstract
The present invention pertains to a process for the preparation of an arylphosphine of the formula R.sup.1 OC--Ar--PR.sup.2 R.sup.3 wherein Ar is aryl or heteroaryl; R.sup.1 is an alkoxy or amine group; and R.sup.2 and R.sup.3 are each any organic group; and each of the respective groups may optionally be substituted with any non-interfering group; which comprises the reaction of a sulfonyloxy compound of the formula R.sup.1 OC--Ar--OSO.sub.2 R.sup.4 wherein R.sup.4 is alkyl, haloalkyl, perhaloalkyl, aryl, aralkyl or alkaryl, with a phosphine of the formula HPR.sup.2 R.sup.3, in a solvent and in the presence of a palladium catalyst and a base. The arylphosphine can then readily be converted to a chiral phosphine ligand.
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