Synthesis of 2,3-dihydro-1H-indazoles by Rh(iii)-catalyzed C–H cleavage of arylhydrazines
作者:Jinzhong Yao、Ruokun Feng、Cong Lin、Zhanxiang Liu、Yuhong Zhang
DOI:10.1039/c4ob00921e
日期:——
A rhodium-catalyzed efficient method for the synthesis of 2,3-dihydro-1H-indazoles is described. The reaction of arylhydrazines with olefins results in the corresponding 2,3-dihydro 1H-indazoles with exclusive regioselectivity via CâH bond activation. The utility of the methodology is illustrated by a rapid synthesis of 1H-indazoles under mild reaction conditions in half an hour.
描述了一种高效的铑催化法合成2,3-二氢-1H-吲哚唑。芳基肼与烯烃的反应通过C–H键活化,产生相应的2,3-二氢-1H-吲哚唑,具备专一的区域选择性。该方法的实用性通过在温和反应条件下快速合成1H-吲哚唑,时间仅需半小时得以展示。