A Versatile New Synthetic Route to 1<i>N</i>-Hydroxyindazoles
作者:Fredrik Lehmann、Tobias Koolmeister、Luke R. Odell、Martin Scobie
DOI:10.1021/ol902085k
日期:2009.11.5
A new and versatile cyclization reaction affording rare 1N-hydroxyindazoles is presented. Treatment of 2-nitrobenzylamines with methanolic sodium hydroxide furnishes 1N-hydroxyindazoles regioselectively and in high yield. The reaction tolerates a range of functional groups and electronic effects.