Process for the preparation of 2-keto-aldonic acids

Details Process for the preparation of 2-keto-aldonic acids Process for the preparation of 2-keto-aldonic acids

1985-01-22

1986-10-28

Garner, Vivian

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

Organic compounds

Carboxylic acids and salts thereof

562525, 562577, C07C 51235, C07C 51373, C07C 59215

Patent

active

046200347

ABSTRACT:
Preparation of 2-keto-aldonic acids, e.g., 2-keto-gluconic acid, by oxidizing an aldose, e.g. glucose, or aldonic acid in aqueous solution with molecular oxygen. Use is made of a platinum catalyst together with a catalytic amount of lead and/or bismuth and/or a compound thereof. The pH of the solution is in the range of from 4 to 12 and preferably in the range of from 7 to 9. The reaction may be carried out at a temperature in the range of 0.degree. to 200.degree. C. and preferably in the range of from 25.degree. to 80.degree. C.

REFERENCES:
patent: 2472168 (1949-06-01), Mehltretter et al.
patent: 3607922 (1971-09-01), Acres
Chemical Abstracts, vol. 98, No. 13, Mar. 28, 1983, p. 637.
Heyns et al., Angew, Chem., 69, (1957), pp. 600-608.

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