Process for producing phosphonic acid halides

Details Process for producing phosphonic acid halides Process for producing phosphonic acid halides

1978-09-20

1980-07-22

Morgenstern, Norman

Chemistry of carbon compounds

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

260543P, 260955, 260960, C07F 9146, C07F 938

Patent

active

042139228

ABSTRACT:
Phosphonic acid halides are prepared by reacting a dialkylphosponate with thionyl chloride or thionyl bromide in the presence of a nitrogen compound from the group comprising N,N-disubstituted formamides, tertiary amines and N,N-disubstituted phosphoric acid triamides. Phosphonic acid dihalides as well as phosphonic acid alkylester monohalides can be prepared by the new process.

REFERENCES:
patent: 2847469 (1958-08-01), Dawson et al.
patent: 3972923 (1976-08-01), Finke et al.
Syn. Recc. Inorg. Metal Org. Chem. vol. 4, p. 417 (1974).
Kittila, "Dimethyl Formamide Chemical Uses", pp. 76-85 (1967).

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