Organic compounds -- part of the class 532-570 series – Organic compounds – Carbohydrates or derivatives
Patent
1987-04-28
1989-07-11
Brown, Johnnie R.
Organic compounds -- part of the class 532-570 series
Organic compounds
Carbohydrates or derivatives
536 11, 536 41, 536122, 536124, C07H 100
Patent
active
048473723
ABSTRACT:
A process for the single-stage preparation of glycosyl fluorides by dissolving saccharides in liquid hydrogen fluoride and evaporating the hydrogen fluoride, wherein the resulting glycosyl fluoride is isolated in such a way that, when the evaporation of the hydrogen fluoride is started at a relatively high temperature, in general at -20.degree. to +20.degree. C., the evaporation is effected at a high evaporation rate or, when a low evaporation rate is used at the start of the evaporation, a sufficiently low temperature is set, in general -80.degree. C. to -30.degree. C.
REFERENCES:
patent: 4233277 (1980-11-01), Sheppard
Brauns, Fluoro-Acetyl Derivatives of Sugars, Journal of American Chemical Society, vol. 45, 833 (1923).
D. T. A. Lamport et al., Biotechnology and Bioengineering, vol. XXIV (1982).
Defaye, Gadelle and Pederson, Carbohydrate Research, 110 (1982).
B. Helferich et al., Liebigs Annalen der Chemie, 1926, p. 447.
Chemical Abstracts, vol. 101, 171601e.
Chemical Abstracts, vol. 102, 8411e.
Migrdichian, Organic Synthesis, vol. 1, 1957, p. 52.
Deger Hans M.
Franz Raimund
Schlingmann Merten
Brown Johnnie R.
Hoechst Aktiengesellschaft
Peselev Elli
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