Methine dyes which have at least one heterocycle containing two

Details Methine dyes which have at least one heterocycle containing two Methine dyes which have at least one heterocycle containing two

1989-10-05

1990-10-02

Higel, Floyd D.

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

Organic compounds

Nitrogen attached directly or indirectly to the purine ring...

544 32, 544284, 544296, 544316, 544354, 544405, 544357, 544359, 544360, 544361, 546104, 546140, 546141, 546142, 546145, 546148, 546153, 546155, 546176, 546177, 546178, 546180, 546205, 546255, 546264, 546270, 546271, 546272, 546273, 546328, 546350, 546102, 546103, 546104, 546108, 548305, 548156, 548328, C07D24136, C07D40106, C07D21170, C07D21182, C07D21306, C07D21512, C07D48700

Patent

active

049608908

ABSTRACT:
Methine dyes (I) which conform in one of their tautomeric forms to the general formula ##STR1## where Y.sup.1 is in both or either case an electron-attracting group and the other Y.sup.1 is hydrogen,

REFERENCES:
patent: 3793034 (1974-02-01), Sato et al.
patent: 4751309 (1988-06-01), Daltrozzo et al.

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