containing a bridge with three conjugated double bonds. This method consists of two successive condensation reactions. The first one is made between CH-acidic indane-1,3-dione acceptor units and an appropriate ketone (here acetone or hexan-2-one). The extended acceptor thus obtained is condensed with an aldehyde in the next step. The dyes show high tinctorial strength due to intense absorption bands at
作为特殊功能有机分子的一部分发布 抽象 我们描述了一种合成
花青染料的合成方法,该
染料含有带有三个共轭双键的桥。该方法由两个连续的缩合反应组成。第一个是在CH酸性
茚满-1,3-二酮受体单元和适当的酮(此处为
丙酮或己二酮)之间制备的。在下一步中将由此获得的延伸的受体与醛缩合。由于在500至750 nm之间的波长处有很强的吸收带,因此
染料具有高着色力。