The pH-dependent structural transformations in aqueous solutions of natural and synthetic flavylium salts are re-examined. The procedure uses Malvin as a reference compound and exploits the different timescales of the kinetic process that take place prior to the equilibration. For each process a kinetic expression was deduced allowing calculation of all the equilibrium constants and most of the rate
重新检查天然和合成
黄酮盐
水溶液中pH依赖性的结构转变。该方法使用Malvin作为参考化合物,并利用了在平衡之前发生的动力学过程的不同时标。对于每个过程,推导出动力学表达式,从而可以计算系统的所有平衡常数和大多数速率常数。通过与通过1 H NMR获得的数据进行比较来确认平衡常数。获得了在马尔文中形成大量反式
查尔酮的明确证据。