Process for the preparation of alkyl diaryl phosphites and diary

Details Process for the preparation of alkyl diaryl phosphites and diary Process for the preparation of alkyl diaryl phosphites and diary

1987-03-20

1989-04-11

Sutto, Anton H.

Organic compounds -- part of the class 532-570 series

Organic compounds

Phosphorus esters

558115, C07F 9141, C07F 914

Patent

active

048208531

ABSTRACT:
Substantially pure alkyl diaryl phosphites can be prepared by reacting a purified alkyl dihalophosphite with a phenol. Diaryl halophosphates of increased purity can be prepared by halogenating the purified alkyl dihalophosphites. This method avoids the by-products and unreacted starting materials generally included as impurities in prior art processes.

REFERENCES:
patent: 2678330 (1954-05-01), Van Gorder et al.
patent: 3987129 (1976-10-01), Pivawer et al.
patent: 4237075 (1980-12-01), Gough
Kosolapoff et al., "Organic Phosphorus Compounds", vol. 5, p. 33; vol. 6, p. 249 (1974).

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