Process for the chlorination of sugars

Details Process for the chlorination of sugars Process for the chlorination of sugars

1989-08-02

1990-12-11

Griffin, Ronald W.

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

Organic compounds

Carbohydrates or derivatives

536122, 536 184, 536 185, 536119, 536115, 536116, 536120, C07H 100, C07H 1500, C08B 3700, C07G 300

Patent

active

049772546

ABSTRACT:
Sugars and partly protected sugar derivatives are chlorinated by reaction of unprotected hydroxyl groups with thionyl chloride to form a persulphite followed by decomposition of the sulphite groups to form chlorosulphites, displacement of the chlorosulphite groups and insertion of chlorine atoms at one or more positions, characterised in that formation and displacement of the chlorosulphite groups and insertion of chlorine atoms is effected by reaction with thionyl chloride in an inert solvent in the presence of a quaternary salt of the general formula:

REFERENCES:
patent: 4362869 (1982-12-01), Jenner et al.
patent: 4380476 (1983-04-01), Mufti et al.
patent: 4751294 (1988-06-01), Jackson
patent: 4783526 (1988-11-01), O'Brien et al.
patent: 4826962 (1989-05-01), Rathbone et al.

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