Binary azulenesquaric acid dyes, their intermediates and optical

Details Binary azulenesquaric acid dyes, their intermediates and optical Binary azulenesquaric acid dyes, their intermediates and optical

1991-11-15

1992-12-08

Dees, Jose G.

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

Organic compounds

Carboxylic acid esters

560 26, 560 51, 560273, 560224, 560725, 564156, 564160, 558303, C07C26100, C07C 6976, C07C23300, C07C25500

Patent

active

051699753

ABSTRACT:
Binary azulenesquaric acid dyes of the formula ##STR1## where X is a bridging member, Y is hydrogen, cyano or formula CO--OR.sup.5, CO--NHR.sup.5, OR.sup.5, O--CO--OR.sup.5, NH--CO--R.sup.5, NH--CO--OR.sup.5 or NH--SO.sub.2 --R.sup.5, where R.sup.5 is hydrogen, C.sub.1 -C.sub.12 -alkyl, C.sub.2 -C.sub.12 -alkenyl, C.sub.5 -C.sub.7 -cycloalkyl or unsubstituted or substituted phenyl, L.sup.1 and L.sup.2 are each, independently of one another, a chemical bond or unsubstituted or substituted C.sub.1 -C.sub.12 -alkylene and R.sup.1, R.sup.2, R.sup.3, R.sup.4, Q.sup.1, Q.sup.2, Q.sup.3 and Q.sup.4 are each, independently of one another, hydrogen or unsubstituted or substituted C.sub.1 -C.sub.12 -alkyl, their intermediates and an optical recording medium containing the novel dyes are described.

REFERENCES:
patent: 4990649 (1991-02-01), Schrott et al.
patent: 5084592 (1992-01-01), Schrott et al.
patent: 5087727 (1992-02-01), Schrott et al.
Houben-Weyl, "Methoden Der Organischen Chemie", vol. E5, pp. 659-684, 695-700, and 941-964. May 1985.
Houben-Weyl, "Methoden Der Organischen Chemie", vol. E4, pp. 181-189, and 352-364. Jan. 1984.

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