New Indigo Chromophores Containing Disulfide Donor Groups

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• 作者：Gerke ; Ralf ; Fitjer ; Lutz ; Mü ; ller ; Peter ; Usó ; n ; Isabel ; Kowski ; Klaus ; Rademacher ; Paul
• 刊名：Tetrahedron
• 出版年：1999
• 出版时间：December 10, 1999
• 年：1999
• 卷：55
• 期：50
• 页码：14429-14434
• 全文大小：292 K

文摘

Oxidative dimerization of a mixture of the thiolanone 5 and the dithiolanone 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 potential of the new indigo chromophore 7 is higher, but the calculated HOMO-LUMO splitting is lower. Accordingly, its longest wavelength absorption maximum surpasses that of 2c distinctly.