Production of tertiary phosphine oxides

Details Production of tertiary phosphine oxides Production of tertiary phosphine oxides

1977-03-24

1978-05-23

Brust, Joseph Paul

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260464, 260465R, 260465H, 2604658R, C07C12000

Patent

active

040910121

ABSTRACT:
Production of tertiary phosphine oxides which contain nitrile groups and correspond to the following general formula I: ##STR1## in which R.sup.1 and R.sub.2 each stand for a straight or branched, identical or different alkyl, cycloalkyl, aryl, alkylaryl or aralkyl group having 1 to 18 carbon atoms, and in which R.sup.1 or R.sub.2 may be identical with R, which stands for a radical of the following general formula II: ##STR2## in which R.sup.3 and R.sup.4 each stand for a straight or branched, identical or different alkyl, cycloalkyl, aryl, alkylaryl or aralkyl group having 1 to 18 carbon atoms, and/or hydrogen atoms. The tertiary phosphine oxides are made by reacting a phosphine of the following general formula III: ##STR3## in which R.sup.5 has the same meaning as R.sup.3 and R.sup.6 has the same meaning as R.sup.4 but is no hydrogen, with an .alpha.,.beta.-unsaturated nitrile of the following general formula IV: ##STR4## in which R.sup.3 and R.sup.4 have the meanings given above. The reaction is effected in a single stage in the presence of water or a water-solvent mixture and the above formula I compounds are separated from the reaction product.

REFERENCES:
patent: 2822376 (1958-02-01), Hechenbleikner et al.
patent: 3145234 (1964-08-01), Buckler et al.
patent: 3148206 (1964-09-01), Rauhut et al.

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