Process for the preparation of epimer-free sugar alcohols from t

Details Process for the preparation of epimer-free sugar alcohols from t Process for the preparation of epimer-free sugar alcohols from t

1990-09-20

1992-11-10

Griffin, Ronald W.

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

Organic compounds

Carbohydrates or derivatives

536125, 536 41, 568861, 568862, 568863, C07H 100, C08B 3700, C07C 2700, C07C 2900

Patent

active

051625172

ABSTRACT:
The sugar alcohols given in the title can be prepared in epimer-free form from the corresponding sugars by catalytic hydrogenation in aqueous solution using hydrogen, the hydrogenation being carried out continuously at 100-500 bar of H.sub.2 and 60.degree.-125.degree. C. on a fixed bed of carrier-free mouldings composed of pressed powders of the elements of the iron group of the periodic table. The mouldings have a compressive strength of above 50 N and an internal surface of 10-90 m.sup.2 /g.

REFERENCES:
patent: 3784408 (1974-01-01), Jaffe et al.
patent: 4029878 (1977-06-01), Kruse
patent: 4322569 (1982-03-01), Chao et al.
patent: 4684720 (1987-08-01), Darsow et al.

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