C - Chemistry – Metallurgy – 07 – H
Patent
C - Chemistry, Metallurgy
07
H
260/233.4
C07H 5/02 (2006.01) C07H 13/04 (2006.01) C07H 15/18 (2006.01)
Patent
CA 1269660
ABSTRACT OF THE INVENTION Glycosyl halides which are 0-acylated or 0-alkylated at least in the 2-position are transhalogenated with alkali metal hydrogen difluorides in a polar-aprotic solvent and, if appropriate, the product is anomerized with the addition of less than the stoichiometric amounts of an inorganic fluoride with a Lewis acid character. Depending on the substrate, the glycosyl fluorides with the 1,2-trans or 1,2-cis configuration are obtained. The glycosyl fluorides produced by the process of the invention are useful glycosylating agents in carbohydrate chemistry.
518080
Deger Hans-Matthias
Fritsche-Lang Wolfram
Kreuzer Matthias
Thiem Joachim
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Deger Hans-Matthias
Fritsche-Lang Wolfram
Hoechst Aktiengesellschaft
Kreuzer Matthias
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