作者:Dieter Weiß、Rainer Beckert、Eric Täuscher、Helmar Görls
DOI:10.1055/s-0029-1219759
日期:2010.5
A series of highly substituted 4-hydroxy-1,3-thiazoles was synthesised in two different ways. Whereas their anions display strong fluorescence in the bathochromic part of the visible spectrum, the emission is shifted hypsochromically upon alkylation reactions. This easy switch between the anion and its derivatives makes them suitable for widespread applications. The thiazoles possess prerequisites for the complexation of metals due to the coexistence of aza-heterocycles and of 1,3-diketone substructures. In addition, the hydroxy group allows further functionalisation reactions, as exemplified by the incorporation of an azide or an acetylene into the product, and by the synthesis of a star-shaped derivative.
一系列高度取代的4-羟基-1,3-噻唑通过两种不同的方法合成。尽管它们的阴离子在可见光的长波部分呈现出强烈的荧光,但在烷基化反应过程中,发射波长却向短波方向偏移。这种阴离子与其衍生物之间的轻松转换使其适用于广泛的应用。噻唑类化合物由于同时存在氮杂环和1,3-二酮子结构,具备了与金属络合的前提条件。此外,羟基的存在允许进一步的功能化反应,例如将叠氮基或炔基引入产物中,以及合成星形衍生物。