3-Hydroxy-3,4-dicarbamoylbutyric acid and salts

Details 3-Hydroxy-3,4-dicarbamoylbutyric acid and salts 3-Hydroxy-3,4-dicarbamoylbutyric acid and salts

1975-01-20

1976-06-01

Evans, Joseph E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260315, C07C10124

Patent

active

039609413

ABSTRACT:
It is disclosed that citric acid or its salts are obtained by the hydrolysis of a 3-carbamoyl-3-hydroxy-4-cyanobutyric acid or salt, that a 3-carbamoyl-3-hydroxy-4-cyanobutyric acid or salt is obtained from a 3-carbamoyl-3,4-epoxybutyric acid or salt, that a 3-carbamoyl-3,4-epoxybutyric acid or salt is obtained from a 3-carbamoyl-3-hydroxy-4-halobutyric acid or salt, that a 3-carbamoyl-3-hydroxy-4-halobutyric acid is obtained from a 3-cyano-3-hydroxy-4-halobutyric acid or salt, that a 3-cyano-3-hydroxy-4-halobutyric acid or salt is obtained from a 3-oxo-4-halobutyric acid or salt, that a 3-oxo-4-halobutyric acid or salt is obtained from a 3-oxo-4-halobutyryl halide, and that a 3-oxo-4-halobutyryl halide is obtained from diketene. Preferred halide compounds are compounds of chlorine.

REFERENCES:
migydichian, Org. Synthesis, vol. 1, pp. 370 and 426, 1957.
Wilcox et al., "J. Am. Chem. Soc.," vol. 72, (1950), pp. 5019-5024.
Suh et al., "J. Pharm. Sciences," vol. 60, (1971), pp. 930-933.

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