Process for the preparation of alkali metal phosphonoformates

Organic compounds -- part of the class 532-570 series – Organic compounds – Phosphorus acids or salts thereof

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C07F 938

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049669915

ABSTRACT:
A process for the production of alkali-phosphonoformates which comprises bringing together in a first stage a trialkyl ester of phosphonoformic acid and an aqueous solution of an alkali hydroxide at a temperature in the range from the freezing point of water and about 40.degree. C., either keeping the resulting mixture in a second stage for further progress of the reaction and then heating the reaction mixture in a third stage to a temperature up to about 100.degree. C. for completion of the saponification, or heating the reaction mixture immediately for completion of the saponification to a temperature of up to 100.degree. C.

REFERENCES:
patent: 4018854 (1977-04-01), McIntosh
Kai et al, Yiyau Gongye 1984, pp. 5-7 (translation).
Warren et al, J. Chem. Soc. (B), 1971, pp. 618-621.
Nyleen, Ber. 578: 1023-1039 (1924) translation of pertinent portions of pp. 1023-1038.
Noren, J. O. et al, Chem. Abs 98:46450y (1983).
Huang, K. et al, Chem. Abs. 101:55224k (1984).
K. Issleib et al, Phosphorus and Sulfur 30:633-636 (1987).

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