Recovery of sucralose intermediates
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United States of America Patent
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Jun 25, 1996
Issued Date -
N/A
app pub date -
Jan 4, 1995
filing date -
Mar 12, 1993
priority date (Note) -
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Abstract
There is disclosed a process for recovering sucralose-6-ester from a feed mixture of 6-O-acyl-4,1',6'-trichloro-4,1',6'-trideoxygalactosucrose in a reaction medium comprising a tertiary amide (such as N,N-dimethylformamide), wherein said process comprises removing a major proportion of said tertiary amide by steam distillation. In preferred aspects of the invention, the steam distillation is followed by extraction and then purification by crystallization or crystal aging to recover sucralose-6-ester in good yield.
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