The synthesis of some bridgehead heterocyclic monomethine cyanine dyes

Authors
Mahmoud, R El-Aal, A
Citation
R. Mahmoud et A. El-aal, The synthesis of some bridgehead heterocyclic monomethine cyanine dyes, DYE PIGMENT, 39(4), 1998, pp. 267-280
Citations number
15
Categorie Soggetti
Chemical Engineering
Journal title
DYES AND PIGMENTS
ISSN journal
01437208 → ACNP
Volume
39
Issue
4
Year of publication
1998
Pages
267 - 280
Database
ISI
SICI code
0143-7208(199812)39:4<267:TSOSBH>2.0.ZU;2-P
Abstract
alpha-Chloroacteic acid and phenacyl bromide were used as reagents reacting with 8-hydroxyquinoline to form bridgehead heterocycles. Reaction of these heterocycles with equi-or bis-molar ratios of 2-(or 4-)methyl substituted heterocyclic quaternary salts afforded a series of monomethine and bismo-no methine cyanine dyes. The electronic spectra of the monomethine cyanine dye s in various solvents are discussed. (C) 1998 Elsevier Science Ltd. All rig hts reserved.