New indigo chromophores containing disulfide donor groups

Authors
Gerke, R Fitjer, L Muller, P Uson, I Kowski, K Rademacher, P
Citation
R. Gerke et al., New indigo chromophores containing disulfide donor groups, TETRAHEDRON, 55(50), 1999, pp. 14429-14434
Citations number
23
Categorie Soggetti
Chemistry & Analysis","Organic Chemistry/Polymer Science
Journal title
TETRAHEDRON
ISSN journal
00404020 → ACNP
Volume
55
Issue
50
Year of publication
1999
Pages
14429 - 14434
Database
ISI
SICI code
0040-4020(199912)55:50<14429:NICCDD>2.0.ZU;2-9
Abstract
Oxidative dimerization of a mixture of the thiolanone 5 and the dithiolanon e 4 yields 2c as chromophore of thioindigo 1c, and 6 and 7 as chromophores of still unknown indigo dyes. As compared to 2c, the first ionization poten tial of the new indigo chromophore 7 is higher, but the calculated HOMO-LUM O splitting is lower. Accordingly, its longest wavelength absorption maximu m surpasses that of 2c distinctly. (C) 1999 Elsevier Science Ltd. All right s reserved.