Process for the preparation of phenol-free phosphites

Details Process for the preparation of phenol-free phosphites Process for the preparation of phenol-free phosphites

1976-07-22

1981-09-22

Raymond, Richard

Chemistry of carbon compounds

Dipeptides, e.g., aspartame, anserine, carnosine, etc.

260927R, C07F 915

Patent

active

042909767

ABSTRACT:
A process for the preparation of dialkylpentaerythritol diphosphites which are not contaminated by the presence of phenol. The process utilizes dichloropentaerythritol diphosphite as a starting material and since it does not contain a phenyl group there is no possibility of phenol being formed as a contaminant. Furthermore, the product obtained in this fashion is characterized by an enhanced hydrolytic stability.

REFERENCES:
patent: 2961454 (1960-11-01), Gould
patent: 3192243 (1965-06-01), Gagliani
patent: 3201437 (1965-08-01), Friedman
patent: 3210398 (1965-10-01), Ratz
patent: 3968188 (1976-07-01), Birum et al.
Mukmenev et al., Doklady. Akad. Nauk. SSSR, vol. 153, No. 3 (11-1963), pp. 605-607.
Gubaidullin et al., dzv. Akad. SSSR, Ser. Khim. (1973) pp. 1116-1118.
Lucas et al., JACS, vol. 72 (1950), pp. 5491-5497.
Derwent Belgium Patents Report, No. 31/65, 5:2-5:3 (8-27-65).

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