Nir dyes, methods of preparing them and their use

Details Nir dyes, methods of preparing them and their use Nir dyes, methods of preparing them and their use

1993-09-14

1995-02-21

Richter, Johann

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

544101, 546 61, 546 84, 546273, 546345, C07D22118, C07D22106

Patent

active

053917626

ABSTRACT:
The compounds of the formula I ##STR1## in which Y and Y.sub.1 are each, independently of one another, O, S, NH or N-alkyl, N-cycloalkyl, N-phenyl or N-benzyl, or Y and Y.sub.1 are together N-alkylene-N,
R and R.sub.1 are each, independently of one another, H, alkyl, cycloalkyl, aralkyl or aryl,
R.sub.2 and R.sub.3 are each, independently of one another, H, or R.sub.2 forms, together with R.sub.6 and the N and C atoms linking them, a 5- or 6-membered ring and R.sub.3 is H, or R.sub.3 forms, together with R.sub.7 and the N and C atoms linking them, a 5- or 6-membered ring and R.sub.2 is H,
R.sub.4 and R.sub.5 are each, independently of one another, H, R.sub.4 forms, together with R.sub.8 and the N and C atoms linking them, a 5- or 6-membered ring and R.sub.5 is H, or R.sub.5 forms, together with R.sub.9 and the N and C atoms linking them, a 5- or 6-membered ring and R.sub.4 is H,
R.sub.6, R.sub.7, R.sub.8 and R.sub.9 are each, independently of one another, H, alkyl, cycloalkyl, aralkyl or aryl, or R.sub.6 and R.sub.8 and/or R.sub.7 and R.sub.9 form, together with the N atom linking them, a piperidine radical, a morpholine radical or an unsubstituted piperazine radical or a piperazine radical substituted on the N atom by C.sub.1 -C.sub.4 alkyl, hydroxyl-C.sub.1 -C.sub.4 alkyl or amino-C.sub.1 -C.sub.4 alkyl,
Z is H or aryl and
An.sup..crclbar. is an anion of a monobasic acid, the alkyl or cycloalkyl being unsubstituted or substituted by halogen, hydroxyl, C.sub.1 -C.sub.4 alkoxy, cyano or phenyl, and
the aryl or aralkyl being unsubstituted or substituted by halogen, hydroxyl, NH-alkyl, N(alkyl).sub.2, C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.4 alkoxy, carboxyl, alkoxycarbonyl, carbonamido, mono- or dialkylcarbonamido, nitro or CN, are suitable as light-absorbing substances in optical recording media.

REFERENCES:
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patent: 3580911 (1971-05-01), Mee et al.
patent: 4072690 (1978-02-01), Garner et al.
patent: 4257954 (1981-03-01), Schmidt et al.
patent: 4767693 (1988-08-01), Oba et al.
patent: 4847385 (1989-07-01), Kusakata et al.
patent: 4876357 (1989-10-01), Phaff et al.
patent: 5004813 (1991-04-01), Phaff et al.
patent: 5071986 (1991-12-01), Phaff et al.
patent: 5144333 (1992-09-01), Mizuguchi et al.
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Chem. Abstr. 90, 732286r (1979).
Derw. Abst. 86-328264[50] (1986).
Derw. Abst. 88-290161[41] (1988).

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