Process for the production of xylitol

Details Process for the production of xylitol Process for the production of xylitol

1995-12-05

1998-02-03

Kight, John

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

Organic compounds

Carbohydrates or derivatives

568863, 568852, C07H 100, C13K 1300, C07C 2900, C07C 2914

Patent

active

057146020

ABSTRACT:
The present invention discloses a method of producing a pentitol from a hexaldonic acid. The hexaldonic acid is decarboxylated for example in the presence of sodium hypochlorite or hydrogen peroxide. After hydrogenation and optionally isomerisation the desired pentitol, which is obtained in high yield, can be purified. The present invention starts from gluconic acid in free or salt form or as a lactone, xylitol is the final product.

REFERENCES:
patent: 2868847 (1959-01-01), Boyers
patent: 3755294 (1973-08-01), Walon
patent: 4156076 (1979-05-01), Dahlgren
patent: 4355158 (1982-10-01), Wolf et al.
Berichte der Deutschen Chemischen Gesellschaft, vol. 32, 27 Feb. 1899 Weinheim, DE, pp. 550-560, O.Ruff: "D-Und r-Arabinose" pp. 553-554.
Journal of the American Chemical Society, vol. 56, No. 7, 5 Jul. 1934 Washington, DC, US, pp. 1632-1633, R.C. Hockett, et al: "Improvements in the preparaton of d-arabinose from calcium gluconate".
Journal of the American Chemical Society, vol. 81, No. 19, 16 Oct. 1959, Washington DC, US, pp. 5190-5192, R.L. Whistler et al. "Preparation of D-arabinose from D-glucose with hypochlorite".

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