Ru-catalyzed activation of free phenols in a one-step Suzuki–Miyaura cross-coupling under mechanochemical conditions
作者:Satenik Mkrtchyan、Michał Jakubczyk、Sehrish Sarfaraz、Khurshid Ayub、Viktor O. Iaroshenko
DOI:10.1039/d4sc01704h
日期:——
nucleophiles under mechanochemical conditions. Conversion of phenolic hydroxy groups without derivatization is important for late-stage modifications of pharmaceuticals and in the context of lignin-material processing. We present a one-step, Ru-catalyzed cross-coupling of phenols with boronic acids, aryl trialkoxysilanes and potassium benzoyltrifluoroborates under mechano-chemical conditions. The protocol
Ru 催化剂对苯酚的活化使得生成的 η 5 -苯氧配合物能够在机械化学条件下选择性地与各种亲核试剂发生反应。无需衍生化即可转化酚羟基对于药物的后期修饰和木质素材料加工非常重要。我们提出了一种在机械化学条件下,钌催化的苯酚与硼酸、芳基三烷氧基硅烷和苯甲酰基三氟硼酸钾的一步交叉偶联反应。该方案接受多种起始材料,并允许以优异的产率进行克级合成。所开发的方法构成了已知方法的非常有趣且限制浪费的替代方案。