application in a broad range of chemical transformations. Generally, this isomerization can be realized either photochemically or thermally. A new isomerization approach is presented, namely a copper‐catalyzed C=N double bond isomerization of hydrazones, which is followed by an efficient intramolecular C−N coupling reaction, providing an unprecedented catalytic approach for the synthesis of 1H‐indazoles
中C = N双键的异构化已经引起了广泛的关注,因为它具有广泛的
化学转化应用潜力。通常,该异构化可以通过光
化学或热方法实现。提出了一种新的异构化方法,即的
铜催化的C = N双键异构化,然后进行有效的分子内C-N偶联反应,为从易于获得的1 H-
吲唑合成提供了前所未有的催化方法邻卤代芳基N磺酰基hydr的Z / E混合物。