1,4-Dithiino[2,3-c; 6,5-c']diisothiazole and related compounds

Details 1,4-Dithiino[2,3-c; 6,5-c']diisothiazole and related compounds 1,4-Dithiino[2,3-c; 6,5-c']diisothiazole and related compounds

1976-09-07

1978-01-10

Gallagher, R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

25230128, 260 78UA, 260268TR, C07D51314

Patent

active

040678792

ABSTRACT:
The compound 3,7-dicyano-1,4-dithiino[2,3-c; 6,5-c']diisothiazole is prepared by reacting either tetracyano-1,4-dithiin or 4,5-dicyano-1,3-dithiolen-2-one with sulfur in 1,2-dimethoxyethane at a temperature of 50.degree.-280.degree. C in the presence of a basic catalyst. The diisothiazole can be converted to derivatives with various utilities, e.g., as fluorescent brighteners.

REFERENCES:
patent: 3101344 (1963-08-01), Vest
patent: 3101365 (1963-08-01), Vest

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