Sodium Hydroxide → beta-D-fructose

HRID 267173

Reaction equation

HRID 267173 reaction equation
O=C[C@@H]([C@H]([C@@H](CO)O)O)O.[O:11]=[CH:12][C@@H:13]([C@H:15]([C@@H:17]([C@@H:19]([CH2:21][OH:22])[OH:20])[OH:18])[OH:16])[OH:14].[OH-].[Na+]>>[CH2:21]([OH:22])[C@H:19]1[O:20][C@:13]([OH:14])([CH2:12][OH:11])[C@@H:15]([OH:16])[C@@H:17]1[OH:18]

Participants

4

Reactant 3

HCID 14798Sodium HydroxideHCID 107526(2R,3S,4R,5R)-2,3,4,5,6-pentahydroxyhexanalHCID 644160aldehydo-D-Xylose

Product 1

HCID 439709beta-D-fructose

Conditions

Temperature
58 °C

Procedure

The above experiment was repeated, except that the xylose isomerase was bound on an alumina carrier. The same dextrose feed liquor, pre-adjusted to a pH of 8.3 - 8.4 with 4 N NaOH, was pumped through the column, which was maintained at a temperature of 58°C, at a rate to provide 45% by weight levulose, dry basis, in the effluent. The residence time was less than one hour. The following is an analysis of the pH of the feed syrup and effluent syrup after a prolonged continuous conversion campaign:

Sources & evidence

ORD record
ord-db4ccdb5bf5c4cc6b0eb2abb4b415aa6
Source dataset
uspto-grants-1976_03
Patent number
US03941655

Linked notes

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