PROCESS FOR THE MANUFACTURE OF NEW VAT DYESTUFFS

摘要

The present invention relates to new vat dyestuffs of the general formula WHEREIN A represents vattable polycyclic quinone, X represents oxygen or sulphur, B represents a 6-membered heterocycle with 2 to 3 nitrogen atoms which optionally contains further fused carbocyclic rings, R represents an aromatic radical at which the substituent -X-B is in ortho- or meta-position to the amide group, Z is hydrogen or -X-B, and a represents hydrogen or