Alkylation of benzthiazole-azo-phenylamine dyestuffs

Details Alkylation of benzthiazole-azo-phenylamine dyestuffs Alkylation of benzthiazole-azo-phenylamine dyestuffs

1977-05-19

1981-09-29

Higel, Floyd D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260155, 260156, 260208, C09B 4311, C09B 4420, D06P 141, D06P 376

Patent

active

042922380

ABSTRACT:
Process for the preparation of benzthiazole dyestuffs by alkylation of compounds of the formula ##STR1## wherein R.sub.1 and R.sub.2 denote hydrogen, alkyl, alkenyl, cycloalkyl, aryl or aralkyl, or, conjointly with the N-atom, form a ring, or R.sub.1 can be linked to the o-position of the ring B and the rings A and B and the radicals R.sub.1 and R.sub.2 can contain non-ionic substituents and carbocyclic or heterocyclic rings can be fused to the rings A and B, with esters of the formula

REFERENCES:
patent: 3585182 (1971-06-01), Straley et al.
patent: 3732201 (1973-05-01), Ramanathan

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