Process for the preparation of cyclic phosphites

Details Process for the preparation of cyclic phosphites Process for the preparation of cyclic phosphites

1985-04-15

1987-09-08

Sutto, Anton H.

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

Organic compounds

Phosphorus esters

C07F 915

Patent

active

046925406

ABSTRACT:
The present invention relates to a process for the preparation of pentaerythritol esters of phosphorous acid derivatives by reacting pentaerythritol with a phosphorous trihalide and a phenol in the presence of a quaternary salt or a polyether.
The use of such catalysts is not only able to improve the yield, but also makes it possible for the entire process to be carried out in one step by adding the phenol at the start of the reaction of pentaerythritol with the phosphorous halide.

REFERENCES:
patent: 3192243 (1965-06-01), Gagliani
patent: 3689602 (1972-09-01), Ismail
patent: 3968188 (1976-07-01), Birum et al.
patent: 4312818 (1982-01-01), Maul et al.

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