Method for the sulfonation of compounds comprising free...

Details Method for the sulfonation of compounds comprising free... Method for the sulfonation of compounds comprising free...

2008-07-08

2008-07-08

Wilson, James O. (Department: 1624)

Organic compounds -- part of the class 532-570 series

Organic compounds

Carbohydrates or derivatives

C558S044000, C558S048000

Reexamination Certificate

active

10853323

ABSTRACT:
A method for sulfonating compounds having one or more free hydroxyl functional groups and/or one or more optionally substituted primary or secondary functional groups, including treating the compounds with a complex of SO3-DMF in the presence of an acid capture agent.

REFERENCES:
patent: 5221489 (1993-06-01), Bloys et al.
patent: 5229504 (1993-07-01), Hayashi
patent: WO 99/29734 (1999-06-01), None
Toshiharu Yamada et al., Preparation and anti-HIV activity of Low-molecular-weight carrageenans and their sulfated derivatives, Carbohydrate Polymers 32(I), pp. 51-55 (1997).

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