Organic compounds -- part of the class 532-570 series – Organic compounds – Phosphorus containing
Patent
1998-05-26
1999-11-30
Killos, Paul J.
Organic compounds -- part of the class 532-570 series
Organic compounds
Phosphorus containing
568 8, C07F 0950
Patent
active
059945877
ABSTRACT:
A process for the purification of crude neomenthyldiphenylphosphine, the process comprising crystallizing the crude neomenthyldiphenylphosphine using a solvent consisting essentially of methanol. The process provides for the unexpectedly efficient production of neomenthyldiphenylphosphine having purities of at least 97 mole percent, and more preferably at least about 99 mole percent. Another embodiment of the invention is neomenthyldiphenylphosphine having a purity of at least 97 mole percent produced by crystallizing crude neomenthyldiphenylphosphine having a purity of less than 97 mole percent using a solvent consisting essentially of methanol.
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Senaratne K. Pushpananda A.
Wu Tse-Chong
Albemarle Corporation
Killos Paul J.
Pippenger Philip M.
Vollano Jean F
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