Organic compounds -- part of the class 532-570 series – Organic compounds – Carbohydrates or derivatives
Patent
1986-07-08
1988-08-23
Griffin, Ronald W.
Organic compounds -- part of the class 532-570 series
Organic compounds
Carbohydrates or derivatives
536 186, 549361, 562538, C07B 4100, C07B 4500, C07H 1516, C07H 1520
Patent
active
047662085
ABSTRACT:
A method of performing an oxidation reaction in which an alkali hypohalite is used as an oxidizing agent which comprises: carrying out the oxidation reaction in an aqueous medium with concurrently distilling off a solvent used in the reaction as the reaction proceeds under a reduced pressure.
The method is in particular useful for the oxidation of diacetone-L-sorbose to diacetone-2-keto-L-gulonic acid in water. The reaction temperature is so accurately controlled that the same optimum yield of diacetone-2-keto-L-gulonic acid is obtained by the use of a reduced amount of sodium hypochlorite as compared with the conventional manner of reaction under atmospheric pressure.
REFERENCES:
patent: 3451993 (1969-06-01), Goshima et al.
patent: 4510306 (1985-04-01), Langdon
patent: 4618709 (1986-10-01), Sada et al.
Kamiya Kozo
Kunugiza Kiyomitsu
Griffin Ronald W.
Takeda Chemical Industries Ltd.
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