Preparation of arylphosphinic acids

Details Preparation of arylphosphinic acids Preparation of arylphosphinic acids

1981-05-04

1982-11-16

Evans, Joseph E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07F 948

Patent

active

043594310

ABSTRACT:
Arylphosphinic acids are prepared by reacting an aromatic compound with phosphorus trichloride in the presence of aluminum chloride to form an aluminum/phosphorus complex and then hydrolyzing the complex with aqueous phosphoric acid to form the arylphosphinic acid as an insoluble phase and a soluble aluminum salt. The arylphosphinic acid and aluminum salt are then easily separated.

REFERENCES:
patent: 2137792 (1938-11-01), Woodstock
patent: 2594454 (1952-04-01), Kosolapoff
patent: 2632018 (1953-03-01), Kosolapoff
patent: 3903208 (1975-09-01), Hofer et al.
patent: 3974217 (1976-08-01), Miles
"Organic Synthesis", 31, pp. 88-90, (1951).
Kosolapoff, "Organophosphorus Compounds", 1950, pp. 43-46 and 128.
Van Wazer, "Phosphorus and Its Compounds", vol. 1, pp. 371, 379 and 380, (1958).

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