Rylene derivatives and their use as dyes

Details Rylene derivatives and their use as dyes Rylene derivatives and their use as dyes

2005-04-12

2005-04-12

Aulakh, Charanjit S. (Department: 1625)

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C106S498000, C106S499000, C546S026000

Reexamination Certificate

active

06878825

ABSTRACT:
Rylene derivatives of the general formula Iwhere the variables have the following meanings:R is hydrogen or substituted or unsubstituted C1-C30-alkyl, aryl or hetaryl;R1is hydrogen or bromine;R2is hydrogen or C1-C6-alkyl;R3is hydrogen, C1-C18-alkyl or substituted or unsubstituted aryl or hetaryl; andn is 2 or 3.

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H. Langhals et al.: “A two-step synthesis of quaterrylenetetracarboxylic bismides-novel NIR fluorescent dyes” Tetrahedron Letters, vol. 36, No. 36, pp. 6423-6424.
Chimia, vol. 48, pp. 503-505.
Dyes and Pigments, vol. 16, pp. 19-25 1991.

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