PROCESS FOR PURIFYING TRIHYDROCARBYLPHOSPHINES USING METHANOL

摘要

A process for the purification of trihydrocarbylphosphine having at least one aryl group and at least one alkyl or cycloalkyl group in the molecule, from a reaction mass comprising the trihydrocarbylphosphine, the process comprising crystallizing the reaction mass using a solvent consisting essentially of methanol. The process provides for the unexpectedly efficient production of trihydrocarbylphosphine compounds having purities of at least 97 mol%, and more preferably at least about 99 mol%. Another embodiment of the invention is neomenthyldiphenylphosphine having a purity of at least 97 mol% produced by crystallizing neomenthyldiphenylphosphine having a purity of less than 97 mol% using a solvent consisting essentially of methanol.