Process for the manufacture of vinyl phosphonic acid derivatives

Details Process for the manufacture of vinyl phosphonic acid derivatives Process for the manufacture of vinyl phosphonic acid derivatives

1981-01-12

1983-06-14

Sutto, Anton H.

Chemistry of carbon compounds

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

2605024P, 2605024R, 260933, C07F 9388, C07F 940

Patent

active

043882528

ABSTRACT:
Process for the manufacture of vinyl phosphonic acid derivatives of the formula ##STR1## with R.sub.1 being hydrogen or alkyl with 1 to 4, preferably 1 to 2, carbon atoms and n being 1 or 2, which comprises heating to 150.degree.-270.degree. C., preferably 170.degree. to 230.degree. C., 2-acetoxyethane phosphonic acid dialkyl esters of the formula ##STR2## with R.sub.2 being alkyl with 1 to 4, preferably 1 to 2, carbon atoms, in the presence of acidic or basic catalysts.

REFERENCES:
patent: 3062792 (1962-11-01), McConnell et al.
Yamagami et al., "Nippon Kagaku Kaisha", vol. 10 (1972), pp. 1991-1993.
Wagner et al., "Synthetic Organic Chemistry", (1953), J. Wiley & Sons, New York, pp. 41-42.

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