4- and 5-arylethynyl water-soluble Mannich bases and related quaternary ammonium salts were synthesized and investigated as a model of conjugated quinone methide precursors (QMPs) by UV–vis light activation. Preparative photohydration and trapping reactions by thiols were studied, together with the detection of both transient QMs and competing QMP lowest triplet excited states (T1), by laser flash
                                    合成了4-和5-芳基
乙炔基
水溶性曼尼希碱以及相关的季
铵盐,并通过紫外-可见光活化将其作为共轭醌甲基化物前体(QMP)的模型进行了研究。研究了通过
硫醇进行的光合
水合和捕集反应,以及通过激光闪光光解法检测瞬态QM和竞争性QMP最低三线态激发态(T 1)。芳基
乙炔基衍
生物作为QMP的效率受结构特征(即共轭芳基
乙炔基部分,取代基和离去基团)以及质子对非质子溶剂化的影响显着。我们的集体数据阐明了共轭曼尼希碱和相关的季
铵盐作为烷基化剂和单线态氧敏化剂在光反应性上的二分法。