4-Aryl-bis 2,6-(aminophenyl)pyridines

Details 4-Aryl-bis 2,6-(aminophenyl)pyridines 4-Aryl-bis 2,6-(aminophenyl)pyridines

1982-06-03

1984-05-01

Jiles, Henry R.

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

Organic compounds

Four or more ring nitrogens in the bicyclo ring system

544126, 546 94, 546187, 546272, 546273, 546281, 546283, 546284, 546329, 546330, 546334, 546335, 546338, C07D21338

Patent

active

044463219

ABSTRACT:
Novel 4-aryl-or heteroaryl-2,6-bis[(substituted-amino)phenyl]pyridines which are useful as color formers in pressure-sensitive carbonless duplicating systems and thermal marking systems are prepared by reacting a 2-, 3- or 4-R.sub.1 R.sub.2 N-acetophenone with an aryl or heteroaryl aldehyde in the present of ammonia or an ammonia-releasing agent.

REFERENCES:
patent: 3985376 (1976-10-01), Baumann et al.
R. L. Frank et al., J. Amer. Chem. Soc. 71, 2629-2635 (1949).
M. Weiss, J. Amer. Chem. Soc. 74, 200-202 (1952).
E. Koenigs et al., Ann. 509, 142-158 (1934).
H. Gilman et al., J. Org. Chem. 22, 1169-1171 (1957).

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