C - Chemistry – Metallurgy – 07 – H
Patent
C - Chemistry, Metallurgy
07
H
C07H 1/06 (2006.01) C07H 5/02 (2006.01)
Patent
CA 2656797
The present invention relates to an improved process for the preparation of Sucralose having purity of at least 99.6% comprising steps of (i) dissolving substantially impure Sucralose in water; (ii) treating the solution obtained in step (i) with a partially water immiscible solvent; (iii) washing the said solvent phase obtained in step (ii) with an amount of water sufficient to remove polar impurities; (iv) crystallizing the product from partially water immiscible solvent; (v) recrystallizing the solid obtained in step (iv) from water.
La présente invention concerne un procédé amélioré pour la préparation de sucralose ayant une pureté d'au moins 99,6 %, comprenant les étapes consistant à (i) dissoudre de la sucralose sensiblement impure dans de l'eau ; (ii) traiter la solution obtenue à l'étape (i) avec un solvant partiellement immiscible dans l'eau ; (iii) laver la phase de solvant obtenue à l'étape (ii) avec une quantité d'eau suffisant à éliminer les impuretés polaires ; (iv) cristalliser le produit dans le solvant partiellement immiscible dans l'eau ; (v) recristalliser le solide obtenu à l'étape (iv) dans l'eau.
Deshpande Pandurang Balwant
Kanzariya Kamlesh Shankarlal
Luthra Parven Kumar
Rana Piyush Maheshbhai
Tomer Sanjiv Onkarsingh
Alembic Limited
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
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