π-Aryl/heteroaryl conjugated coumarin-thiazoles: Synthesis, optical spectral and nonlinear optic properties
作者:Sabir H. Mashraqui、Hitesh Mistry、Subramanain Sundaram
DOI:10.1002/jhet.5570430416
日期:2006.7
A series of π-aryl/heteroaryl conjugated coumarin-thiazole systems 8a-f has been synthesized by using Hantzsch thiazole protocol and Wittig olefination as the keys. In the UV-Visible spectra of 8a-f, a main absorption band associated with a dominant π-π* transition is observed in the region of 338 to 390 nm. Qualitatively, the values of λmax have been found to correlate satisfactory with the donor/acceptor