Rapid access to 3-aminoindazoles from nitriles with hydrazines: a strategy to overcome the basicity barrier imparted by hydrazines
作者:Chunyan Zhang、Haowen Zhao、Zehua Li、Zuyu Liang、Shuo Qi、Mingyu Cai、Sheng Zhang、Xiaofei Jia、Guoying Zhang、Mao-Lin Hu
DOI:10.1039/d0cc03789c
日期:——
A practical and efficient base mediated synthesis of free 3-aminoindazoles has been developed from the reaction of nitriles with hydrazines, which successfully overcomes the difficulty of using aromatic hydrazines as substrates and allows for the synthesis of a wide range of N-aryl substituted free 3-aminoindazoles in moderate to excellent yields under mild conditions in one-pot. This finding provides
从腈与肼的反应中开发出了一种实用,有效的碱介导的游离3-氨基吲唑合成方法,该方法成功克服了使用芳香族肼作为底物的困难,并可以合成多种N-芳基取代的游离3 -氨基吲唑在温和条件下一锅即可获得中等至极佳的收率。这一发现为合成各种功能化的3-氨基吲唑衍生物提供了一种快速而有用的策略。