2,6-Bis(heteroaryl)pyridines

Details 2,6-Bis(heteroaryl)pyridines 2,6-Bis(heteroaryl)pyridines

1981-03-16

1983-08-02

Rotman, Alan L.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

546256, 546272, 546273, 546281, 544124, 427151, 428411, 282 275, C07D45504

Patent

active

043967671

ABSTRACT:
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-R.sub.4 -4-NR.sub.5 R.sub.6 -benzaldehyde or a heteroaryl aldehyde in the presence of ammonia or an ammonia-releasing agent.

REFERENCES:
patent: 3985376 (1976-10-01), Baumann et al.
patent: 4032527 (1977-06-01), Crounse et al.
patent: 4140689 (1979-02-01), Foley et al.
M. Weiss, J. Amer. Chem. Soc. 74, 200-202, (1952).
E. Koenigs et al., Ann. 509, 142-158, (1934).

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