Sucralose pentaester production

Details Sucralose pentaester production Sucralose pentaester production

C - Chemistry, Metallurgy

07

H

C07H 13/02 (2006.01) C07H 13/04 (2006.01) C07H 13/08 (2006.01)

Patent

CA 2114180

A process for producing substantially pure sucralose pentaester from a mixture of 6-O-acyl-4,1',6'-trichloro-4,1',6'-trideoxygalactosucrose in a reaction medium comprising a tertiary amide, wherein said process comprises the steps of: (a) recovering the 6-O-acyl-4,1',6'-trichloro-4,1',6'-trideoxygalactosucrose from said mixture; (b) peracylating the 6-O-acyl-4,1',6'-trichloro-4,1',6'-trideoxygalactosucrose product of step (a) to produce thereby 4,1',6'-trichloro-4,1',6'-trideoxygalactosucrose pentaester; and (c) crystallizing the 4,1',6'-trichloro-4,1',6'-trideoxygalactosucrose pentaester product of step (b) to produce substantially pure 4,1',6'-trichloro-4,1',6'-trideoxygalactosucrose pentaester.

Méthode de préparation d'un pentaester de sucralose pratiquement pur à partir d'un mélange de 6-O-acyl-4,1',6'-trichloro-4,1',6'-tridésoxygalactosucrose dans un milieu de réaction renfermant un amide tertiaire, comprenant les étapes suivantes : a) récupération du 6-O-acyl-4,1',6'-trichloro-4,1',6'-tridésoxygalactosucrose à partir de ce mélange; b) peracylation du 6-O-acyl-4,1',6'-trichloro-4,1',6'-tridésoxygalactosucrose de l'étape (a) pour l'obtention par cette voie du pentaester de 4,1',6'-trichloro-4,1',6'-tridésoxygalactosucrose pentaester; c) cristallisation du pentaester de 4,1',6'-trichloro-4,1',6'-tridésoxygalactosucrose de l'étape (b) pour l'obtention de pentaester de 4,1',6'-trichloro-4,1',6'-tridésoxygalactosucrose pratiquement pur.

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