Process for producing lower alkyl 2-keto-L-gulonate

Details Process for producing lower alkyl 2-keto-L-gulonate Process for producing lower alkyl 2-keto-L-gulonate

1992-09-30

1993-07-13

Prescott, Arthur C.

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

Organic compounds

Carboxylic acid esters

C07C 6966

Patent

active

052275159

ABSTRACT:
There is disclosed a process for producing lower alkyl 2-keto-L-gulonate which comprises reacting 2-keto-L-gulonic acid with a lower alcohol in the presence of an acid, and simultaneously distilling off the resulting water together with the lower alcohol while continuously introducing a lower alcohol. By using the lower alkyl 2-keto-L-gulonate thus produced, L-ascorbate can be prepared in high purity and high yield.

REFERENCES:
patent: 4837365 (1989-06-01), Morel
patent: 4892966 (1990-01-01), Wild
patent: 5118833 (1992-06-01), Mori et al.

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