Patent ID: 6869454

Claim:
A 7-nitro-2,1,3-benzthiadiazole compound of formula (I): wherein X is sulfur; Y 1 and Y 2 each represent a nitrogen atom; R1 and R2 are the same or different and, independently of one another, each represent hydrogen, a halogen atom, a (C 1 -C 4 )-alkyl group, a substituted (C 1 -C 4 )-alkyl group substituted with a halogen atom, a (C 1 -C 4 )-alkoxy group, a nitro group or an NR a R b group, the R a and R b are the same or different and, independently of one another, each represent hydrogen, a (C 1 -C 4 )-alkyl group, an optionally substituted, aromatic carbocyclic group or a (C 1 -C 4 )-alkane carbonyl group; V represents hydrogen, an aliphatic group, an aromatic isocyclic group, a cyano group or a carbonyl function (CO)-R3, wherein R3 represents hydrogen, a hydroxy group, a (C 1 -C 4 )-alkoxy group, an amino group, a (C 1 -C 4 )-alkylamino group, a (C 1 -C 6 )-alkyl group or an aryl group; W represents a cyano group or a carbonyl function (CO)-R4, R4 representing hydrogen, a hydroxy group, a (C 1 -C 4 )-alkoxy group, an amino group, a (C 1 -C 4 )-alkylamino group, a (C 1 -C 6 )-alkyl group or an aryl group; and Kat + represents an alkali cation, an alkaline earth cation, a quaternary ammonium group, a quaternary phosphonium group or a sulfonium group.