through a hydrazine-directed C–H functionalization pathway. This [4+1] annulation, based on the cleavage of a Csp–Csp triple bond in alkynylcyclobutanol, provides a new pathway to prepare diverse 1H-indazoles under mild reaction conditions.
Rh(III)催化的苯
肼与1-炔基
环丁醇的偶联是通过
肼指示的C–H官能化途径实现的。基于炔基
环丁醇中Csp–Csp三键的裂解,这种[4 + 1]环化为在温和的反应条件下制备各种1 H-
吲唑提供了一条新途径。