Process for the preparation of phosphonic acid dihalides

Details Process for the preparation of phosphonic acid dihalides Process for the preparation of phosphonic acid dihalides

1974-05-23

1976-04-13

Patten, James A.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260465G, C07R 942

Patent

active

039504131

ABSTRACT:
A process for the preparation of phosphonic acid dihalides of the formula ##EQU1## IN WHICH R is .alpha., .beta.-unsaturated alkyl, .alpha., .beta.-unsaturated alkyl, phenyl or benzyl and may be further substituted, which comprises reacting corresponding phosphonic or pyrophosphonic acids or their functional derivatives with acid halides of the formula (CO).sub.n Hal.sub.2 where n is 1 or 2.

REFERENCES:
patent: 2847469 (1958-08-01), Dawson et al.
patent: 2929843 (1960-03-01), Dawson et al.
patent: 3179696 (1965-04-01), Brown et al.
patent: 3200145 (1965-08-01), Lutz et al.

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