Controllable chemoselectivity in the reaction of 2<i>H</i>-indazoles with alcohols under visible-light irradiation: synthesis of C3-alkoxylated 2<i>H</i>-indazoles and <i>ortho</i>-alkoxycarbonylated azobenzenes

Abstract

A high chemoselectivity in the visible-light-induced reaction of 2<italic>H</italic>-indazoles with alcohols controlled by the reaction atmosphere was achieved, providing C3-alkoxylated 2<italic>H</italic>-indazoles and <italic>ortho</italic>-alkoxycarbonylated azobenzenes.