Process for the preparation of phosphorus-containing cyanohydrin

Details Process for the preparation of phosphorus-containing cyanohydrin Process for the preparation of phosphorus-containing cyanohydrin

1984-05-29

1986-07-08

Sutto, Anton H.

Organic compounds -- part of the class 532-570 series

Organic compounds

Phosphorus esters

C07F 932

Patent

active

045992070

ABSTRACT:
The invention relates to a new process for the preparation of compounds of the formula (I) ##STR1## in which R.sub.1 denotes alkyl and R.sub.2 denotes H, acetyl or propionyl, by addition of compounds of the formula II ##STR2## onto compounds of the formula III, using radical-formers, the radical-formers being used being compounds of the general formula IV ##STR3## in which R.sub.3 denotes alkyl or phenyl and R.sub.4 denotes alkyl, the reaction being carried out at temperatures in the range from 50.degree. to 100.degree. C., and, for the preparation of compounds of the formula I where R.sub.2 is H, then splitting off the radical R.sub.2.sup.'. Using this process, the compounds of the formula I are obtained in high yield and particular purity.

REFERENCES:
patent: 3726847 (1973-04-01), Lewis et al.
patent: 4001352 (1977-01-01), Kleiner et al.
patent: 4052484 (1977-10-01), Schliebs et al.
patent: 4057567 (1977-11-01), Friedman et al.

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