Alkane-bisalkyl-phosphinic anhydrides and process for the manufa

Details Alkane-bisalkyl-phosphinic anhydrides and process for the manufa Alkane-bisalkyl-phosphinic anhydrides and process for the manufa

1979-03-12

1980-03-25

Morgenstern, Norman

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07F 930

Patent

active

041950356

ABSTRACT:
Alkane-bisalkylphosphinic anhydrides consisting of repeating units of the formula ##STR1## and process for the manufacture of alkane-phosphonicanhydrides and alkane-bisalkyl-phosphonic anhydrides consisting of repeating units of the formula ##STR2## wherein alkane-phosphonic acids or alkane-bisalkyl-phosphinic acids of the formula ##STR3## are heated to 250.degree. to 450.degree. C. under reduced pressure while splitting off water.

REFERENCES:
patent: 3639473 (1972-02-01), Venezky
patent: 3689548 (1972-09-01), Maier
Michaelis et al., "Ber", Jahreg VII, p. 1070 (1874).
Kosolapoff et al., "JACS", 73:4101 (1951).
Moedritzer, "JACS", 83:4381 (1961).

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