Organic compounds -- part of the class 532-570 series – Organic compounds – Carbohydrates or derivatives
Patent
1993-02-26
1994-08-09
Lilling, Herbert J.
Organic compounds -- part of the class 532-570 series
Organic compounds
Carbohydrates or derivatives
536172, C07H 1500
Patent
active
053367650
ABSTRACT:
A process of preparing aldobionamides and N-substituted aldobionamides which includes the steps of recovering a by-product of the process (an ammonium salt of an aldobionic acid) and converting it into at least one starting material. Aldobiono-1,5-lactone is reacted with a primary or secondary amine and the resulting solution containing the by-product of the reaction is passed through an anionic exchange column to obtain the eluate containing the starting amine and some aldobionamide. The eluate may be recycled as part of the starting material mixture. Alternatively, the amine and the aldobionamide may be recovered from the eluate, and the amine alone may be recycled. Aldobionate anion is retained on the column and may be converted into the salt of an aldobionic acid and then into the aldobionic acid.
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Au Van
Harirchian Bijan
Lever Brothers Company Division of Conopco, Inc.
Lilling Herbert J.
Mitelman Rimma
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