Chlorination of sucrose-6-esters
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United States of America Patent
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Sep 10, 2013
Grant Date -
Mar 29, 2012
app pub date -
Mar 24, 2010
filing date -
Mar 27, 2009
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Abstract
A method for the chlorination of a sucrose-6-acylate to produce a 4,1′,6′-trichloro-4,1′,6′-trideoxy-galactosucrose-β-acylate wherein said method comprises: (i) reacting the sucrose-6-acylate with a chlorinating agent in a reaction vehicle comprising a tertiary amide in order to chlorinate the 4, V and 6′ positions of the sucrose-6-acylate; and (ii) quenching the product stream of (i) to produce a 4,1′,6′-trichloro-4,1′,6′-trideoxy-galactosucrose-6-acylate; wherein before said quenching, a portion of the tertiary amide is removed.
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