Bis alkyl phosphorus esters of dicarboxylic acids

Details Bis alkyl phosphorus esters of dicarboxylic acids Bis alkyl phosphorus esters of dicarboxylic acids

1974-07-15

1976-03-09

Raymond, Richard L.

Chemistry of carbon compounds

Dipeptides, e.g., aspartame, anserine, carnosine, etc.

C07F 940

Patent

active

039432009

ABSTRACT:
Bis alkyl phosphorus esters of dicarboxylic acids having the formula ##EQU1## where R' is a C.sub.1 -C.sub.8 alkyl or haloalkyl group, preferably a C.sub.1 -C.sub.4 alkyl or haloalkyl group, and R is a C.sub.1 -C.sub.8 divalent hydrocarbon group are disclosed. The compounds are formed by the reaction of a tertiary phosphite having the formula P(OR').sub.3 with a haloalkyl ester of a dicarboxylic acid having the formula XCH.sub.2 C(O)ORO(O)CCH.sub.2 X, where X is chlorine, bromine or iodine. The compounds have utility as flame retardants and as sequesterants for metallic cation.

REFERENCES:
patent: 2634288 (1953-04-01), Boyer et al.
patent: 2957904 (1960-10-01), Stiles
patent: 3012054 (1961-12-01), Moss

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