Tricycle pyrazine dyes

Details Tricycle pyrazine dyes Tricycle pyrazine dyes

1991-07-26

1992-11-17

Berch, Mark L.

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

Organic compounds

Unsubstituted hydrocarbyl chain between the ring and the -c-...

540553, 540575, 540599, 544115, 544180, 544182, 544345, 544212, 544219, 544235, 544237, 544238, 544245, 544247, 544284, 544316, 544317, 544319, 544320, 544321, 544322, 544328, 544331, 544333, 544342, 544343, 544383, C07D491153, C07D48714, C07D24102, C07D49514

Patent

active

051644967

ABSTRACT:
Compounds of the formula ##STR1## in which R.sup.1, R.sup.2, X.sup.1, X.sup.2, Y.sup.1 and Y.sup.2 have the following meanings

REFERENCES:
patent: 3407203 (1968-10-01), Buijle
patent: 3763091 (1973-10-01), Crescenzi et al.
Shin Chemical Abstracts, vol. 80 47943b 1974.
Tetrahedron, vol. 30 1974, pp. 667-673; Gal Lina et al.; Condensation of 1,4-diacetylpiperazine-2,5-Dione with Aldehydes.

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