Hydroxy-diphosphonic acid derivatives of higher carboxylic acids

Details Hydroxy-diphosphonic acid derivatives of higher carboxylic acids Hydroxy-diphosphonic acid derivatives of higher carboxylic acids

1983-12-21

1985-12-17

Evans, J. E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07F 938

Patent

active

045591814

ABSTRACT:
A high efficiency process for producing hydroxy-diphosphonic acid derivatives of higher carboxylic acids comprising a first step of mixing a tri-valent phosphorous compound with the higher carboxylic acid in a molar ratio in the range of 13:12 to 18:12, and subsequently heating the reaction mixture to a temperature of 80.degree. to 110.degree. C. for about 3 to 20 hours.
In one embodiment, a subsequent solvolysis step is employed wherein the product resulting from the heating step is heated with a solvent having a hydroxyl function.

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Prentice et al, "Interaction of Acylating Agents and Phosphorus (III) Sources", J.A.C.S., vol. 94, No. 17, Aug. 23, 1972, pp. 6119-6124.

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