Process for preparing sugar acetonides

Details Process for preparing sugar acetonides Process for preparing sugar acetonides

1994-09-06

1997-05-06

Wilson, James O.

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

Organic compounds

Carbohydrates or derivatives

536 184, 536 185, 536 551, 536 63, C07H 100

Patent

active

056272723

ABSTRACT:
A method of preparing sugar acetonides, such as for example 1,2:5,6-Di-O-isopropylidene-.alpha.-D-glucofuranose, by reacting the corresponding sugar, e.g. D-(+)-glucose, with acetone in the presence of a Lewis acid and a carboxylic acid derivative of general formula ##STR1## wherein X is a leaving group which may be readily replaced by a hydroxyl group.

REFERENCES:
patent: 4491668 (1985-01-01), Ikawa et al.
patent: 4567282 (1986-01-01), Mizuno et al.
patent: 5220002 (1993-06-01), Akiyama
T.W. Greene and P.G.M. Wuts, Protective Groups in Organic Synthesis (John Wiley & Sons, Inc., New York) pp. 88-89 (1991).

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