Production of tertiary phosphine oxides

Details Production of tertiary phosphine oxides Production of tertiary phosphine oxides

1975-03-26

1976-12-14

Sneed, Helen M. S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07F 902

Patent

active

039976114

ABSTRACT:
Production of tertiary phosphine oxides of the general formula (I): ##STR1## in which the substituents R.sub.1 and R.sub.2, being identical or different, each stand for an alkyl, alkenyl, alkinyl, cycloalkyl, aralkyl or aryl radical having from 1 to 18 carbon atoms. The phosphine oxides are made by splitting off formaldehyde and hydrogen halide at temperatures within the range about 150.degree. and 350.degree. C, in the presence of hydrogen halide, from a molten compound of the general formula (II): ##STR2## in which R.sub.1 and R.sub.2 have the meanings given above and X stands for halogen; separating the formaldehyde and hydrogen split off from the reaction mixture, and treating the resulting crude product so as to separate the compound of general formula (I) therefrom.

REFERENCES:
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Hellmann et al., Ann. V659, pp. 49-63, (1962).
Petrov et al., Russ. Chem. Revs. V37, pp. 537-539, (1968).
Kosolapoff et al., Organic Phosphorous Compounds, Wiley-Interscience, N.Y.V.1, pp. 99, 100, (1972).
Cotton, Progress in Inorganic Chemistry, Interscience Publ. N.Y., vol. 5, pp. 47-49, (1963).

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