Process for the preparation of cationic methine dyestuffs

Details Process for the preparation of cationic methine dyestuffs Process for the preparation of cationic methine dyestuffs

1983-03-14

1985-09-17

Hollrah, Glennon H.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548511, 548467, C07D20914, C07D20918, C07D40306

Patent

active

045422230

ABSTRACT:
Methine dyestuffs of the formula ##STR1## are prepared by subjecting a compound ##STR2## to a condensation reaction with a compound

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patent: 3541089 (1970-11-01), Hoseltine et al.
patent: 3888850 (1975-06-01), Entschel et al.
patent: 3925015 (1975-12-01), Kuhlthau
patent: 3980430 (1976-09-01), Kuhlthau
patent: 4042322 (1977-08-01), Kuhlthau

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