beta-Maltose → Sorbitol

HRID 4249

Reaktionsgleichung

Reaktionsgleichung von HRID 4249
[CH2:1]([OH:23])[C@H:2]1[O:7][C@H:6]([O:8][C@H:9]2[C@H:14]([OH:15])[C@@H:13]([OH:16])[C@H:12]([OH:17])[O:11][C@@H:10]2[CH2:18][OH:19])[C@H:5]([OH:20])[C@@H:4]([OH:21])[C@@H:3]1[OH:22]>[Ni]>[OH:8][CH2:6][C@@H:5]([C@H:4]([C@@H:3]([C@@H:2]([CH2:1][OH:23])[OH:7])[OH:22])[OH:21])[OH:20].[CH2:1]([OH:23])[C@H:2]1[O:7][C@H:6]([O:8][C@@H:9]([C@H:14]([OH:15])[C@@H:13]([OH:16])[CH2:12][OH:17])[C@H:10]([OH:11])[CH2:18][OH:19])[C@H:5]([OH:20])[C@@H:4]([OH:21])[C@@H:3]1[OH:22].[CH2:1]([OH:23])[C@H:2]1[O:7][C@H:6]([O:8][C@H:9]2[C@H:14]([OH:15])[C@@H:13]([OH:16])[C@@H:12]([O:17][C@@H:14]([C@H:9]([OH:8])[C@@H:10]([OH:11])[CH2:18][OH:19])[C@H:13]([OH:16])[CH2:12][OH:17])[O:11][C@@H:10]2[CH2:18][OH:19])[C@H:5]([OH:20])[C@@H:4]([OH:21])[C@@H:3]1[OH:22]

Komponenten

5

Edukt 1

HCID 6255beta-Maltose

Produkt 3

HCID 5780SorbitolHCID 493591MaltitolHCID 5288441Maltotriitol

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 935NickelKatalysator

Versuchsvorschrift

After adjusting the concentration of the maltose solution to 50%, to the concentrate was added Raney nickel catalyst in an amount of 10%, and the admixture was then heated to 90°-125° C. under stirring conditions, and hydrogenated at this temperature under a hydrogen pressure of 20-100 kg/cm2. After completion of the hydrogenation, the Raney nickel catalyst was removed, and the hydrogenated product was purified with activated carbon and ion exchangers according to conventional methods, obtaining a sugar alcohol mixture with a composition of sorbitol, 0.8%, maltitol, 92.2%, maltotriitol, 4.6%, and higher sugar alcohols including maltotetraitol, 2.4%, in the yield of about 92% against the starting starch material.

Aufarbeitung

  1. temperaturethe admixture was then heated to 90°-125° C. under stirring conditions
  2. customAfter completion of the hydrogenation, the Raney nickel catalyst was removed
  3. customthe hydrogenated product was purified with activated carbon and ion exchangers

Quellen und Nachweise

ORD-Eintrag
ord-876c8ad5813343f88cacf0ee9c0dee04
Quelldatensatz
uspto-grants-1988_02
Patentnummer
US04725387

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