Synthesis of 3-Substituted Indazoles from Arynes and <i>N</i>-Tosylhydrazones
作者:Pan Li、Jingjing Zhao、Chunrui Wu、Richard C. Larock、Feng Shi
DOI:10.1021/ol201086g
日期:2011.7.1
Readily available, stable, and inexpensive N-tosylhydrazones react with arynes under mild reaction conditions to afford 3-substituted indazoles in moderate to good yields. The reaction appears to involve a dipolar cycloaddition of in situ generated diazo compounds and arynes.