Liquid-liquid extraction of DMF

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United States of America Patent

PATENT NO 10370398
APP PUB NO 20170369518A1
SERIAL NO

15628141

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Abstract

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The present invention relates to a method for the chlorination of a sucrose-6-acylate to produce a 4,1′,6′-trichloro-4,1′,6′-trideoxy-galactosucrose-6-acylate wherein said method includes steps of:

    (i) combining the sucrose-6-acylate with a chlorinating agent in a reaction vehicle comprising a tertiary amide to afford a mixture;(ii) heating said mixture for a heating period in order to provide chlorination of sucrose-6-acylate at the 4, 1′ and 6′ positions thereof; and(iii) quenching the product stream of (ii) to produce a 4,1′,6′-trichloro-4,1′,6′-trideoxy-galactosucrose-6-acylate;wherein before said quenching, a portion of said tertiary amide is removed by extraction into a solvent in which said tertiary amide is at least partially soluble.

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Patent Owner(s)

Patent OwnerAddress
TATE & LYLE TECHNOLOGY LIMITEDLONDON EC3R 6DQ

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Dentel, David Spanish Fort, US 2 1
Eilers, Thomas Arlington Heights, US 8 12
Micinski, Edward Martinez, US 12 96

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