Process for preparing 3-methoxy-4-(4'-aminobenzenesulfonamido)-1

Details Process for preparing 3-methoxy-4-(4'-aminobenzenesulfonamido)-1 Process for preparing 3-methoxy-4-(4'-aminobenzenesulfonamido)-1

1978-01-10

1979-04-24

Rollins, Alton D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07D28510

Patent

active

041511646

ABSTRACT:
3-Methoxy-4-(4'-aminobenzenesulphonamido)-1,2,5-thiadiazole is prepared by reaction of 3-methoxy-4-chloro-1,2,5-thiadiazole with sulfanilamide in dimethylsulfoxide as solvent and in the presence of alkali hydroxides or carbonates using a reaction temperature of from ambient temperature to 95.degree. C., whereby per mole of thiadiazole-compound from 1.2 to 1.5 mole of sulfanilamide and from 1.5 to 3 moles of the alkali hydroxide or carbonate are used, whereafter the reaction product is obtained by acidification.

REFERENCES:
patent: 3247193 (1966-04-01), Menzl
patent: 3467653 (1969-09-01), Weinstock et al.
patent: 3636209 (1972-01-01), Weinstock et al.
patent: 3812182 (1974-05-01), Weinstock et al.
Parker, Quarterly Reviews, vol. 16, pp. 176-187 (1962).

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