Synthesis of citric acid or citrates

Details Synthesis of citric acid or citrates Synthesis of citric acid or citrates

1979-08-27

1981-02-03

Evans, Joseph E.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

562584, C07C 59265, C07C 69704

Patent

active

042490189

ABSTRACT:
Citric acid or a citrate ester can be prepared by the process comprising the steps of oxidizing isotetralin to form cyclodeca-1,6-diene-4,9-dione, converting the dione into the bis-cyanohydrin derivative, ozonating the bis-cyanohydrin and recovering citric acid or a citrate ester. It is preferred that the isotetralin be prepared by reduction of naphthalene.

REFERENCES:
patent: 3503997 (1970-03-01), Fields
patent: 3770796 (1973-11-01), Lawrence et al.
patent: 3950390 (1976-04-01), Faubl
Grob, C. A. et al., "Cyclodecapolyenes . . . ", Helv. Chim. Acta. 43, pp. 1546-1555, (1960). See Chemical Abstracts, vol. 55, (1961), # 7607b.
Noller, Carl R., Chemistry of Organic Compounds, (1957), 2nd Ed., p. 266.

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