4-[4-(substituted-amino)phenyl]- or heteroaryl-2,...

Details 4-[4-(substituted-amino)phenyl]- or heteroaryl-2,... 4-[4-(substituted-amino)phenyl]- or heteroaryl-2,...

C - Chemistry, Metallurgy

07

D

42/11, 260/277,

C07D 409/14 (2006.01) B41M 5/136 (2006.01) C07D 213/38 (2006.01) C07D 213/55 (2006.01) C07D 455/04 (2006.01)

Patent

CA 1180331

ABSTRACT OF THE DISCLOSURE Novel 4-[4-(substituted-amino)phenyl]- or heteroaryl- 2,6-bis(heteroaryl)pyridines which are useful as color formers in pressure-sensitive carbonless duplicating systems and thermal marking systems are prepared by reacting a heteroaryl methyl ketone with a 2-R4-4-NR5R6-benzaldehyde or a heteroaryl aldehyde in the presence of ammonia or an ammonia-releasing agent.

398319

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