Jk Sucralose Inc.

Haibing He

Xin Yang

Fei Wang

Yongzhu Yu

Zhisong Fan

Jinshan Wu

The present application discloses a method for crystallizing sucralose, which uses an alcohol solvent or a mixed solvent of alcohol and other solvent(s) in the crystallization of sucralose.

Method for crystallizing sucralose

The invention discloses a method for improving the yield of sucralose, including reacting sucrose to produce sucrose-6-acetate in the existence of an azo reagent as a catalyst and acetic acid as an acylating agent in a proper solvent; then reacting sucrose-6-acetate with a proper chlorinating agent to produce sucralose-6-acetate in a non-proton polar solvent with TCA as a catalyst; and at last, alcoholyzing sucralose-6-acetate in KOH/methanol to obtain sucralose.

Method of sucralose synthesis yield

The present application discloses a method for crystallizing sucralose, which comprises using a mixed solvent, which comprises two solvents with different boiling points, wherein the solvent with lower boiling point has higher solubility to sucralose than the solvent with higher boiling point. The method of the present invention has the advantages of low cost, high yield, mild processing conditions, stable quality, simple apparatuses and so on.

The present invention discloses a process for the preparation of sucralose by the deacylation of trichlorosucrose-6-ethyl ester, wherein the deacylation reaction is performed in an alcohol solvent in the presence of organic base catalyst, so as to obtain sucralose.

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Nanjing, China

Haibing He