Title:
CONTINUOUS EPIMERIZATION OF SUGARS
Document Type and Number:
Japanese Patent JPS63280090
Kind Code:
A
Abstract:
Continuous process for the epimerisation of pentoses and hexoses by heating a sugar dissolved in a solvent in the presence of a basic anion exchanger loaded with a molybdenum(VI) compound, which is characterised in that, for the preparation of a D- or L-sugar with cis-OH groups in the 2- and 3-position of the sugar, a homogeneous solution of the corresponding sugar with trans-OH groups in the 2- and 3-position of the sugar is passed continuously in a mixture of water and methanol or ethanol at temperatures from 70 to 100 DEG C, preferably 73 to 80 DEG C, through a reaction tube which contains the basic anion exchanger loaded with the molybdenum(VI) compound. This process is particularly suitable for the epimerisation of D-arabinose to the D-ribose needed for the preparation of riboflavin.
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Inventors:
WARUTAA DOBURAA
YOAHIMU PAUSUTO
YOAHIMU PAUSUTO
Application Number:
JP10444188A
Publication Date:
November 17, 1988
Filing Date:
April 28, 1988
Export Citation:
Assignee:
BASF AG
International Classes:
C07B61/00; C07H3/02; (IPC1-7): C07H3/02
Attorney, Agent or Firm:
Masao Kobayashi
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