Process for the preparation of 4,1',6'-trichloro-4,1',...

Details Process for the preparation of 4,1',6'-trichloro-4,1',... Process for the preparation of 4,1',6'-trichloro-4,1',...

C - Chemistry, Metallurgy

07

H

260/233

C07H 5/02 (2006.01)

Patent

CA 1171852

ABSTRACT A process for the preparation of 4,1',6'-trichloro- 4,1',6'-trideoxygalactosucrose (TGS) comprising the steps of: (a) reacting sucrose with an acylating reagent under conditions to provide a mixture of acylated sucrose derivatives containing a major proportion of 6-monoacylated material; (b) optionally separating 6-monoacylated sucrose derivative from other acylated derivatives before step (c); (c) reacting the monoacylated sucrose derivative with a chlorinating reagent capable of chlorinating at positions 1', 4 and 6' of a sucrose 6- acylate; and (d) deacylating and separating (in either order) the 4,1',6'-trichloro-4,1',6'-trideoxygalactosucrose material formed.

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