Unexpected ester and phosphonate radical generation by hypervalent iodine compounds for synthesizing 6-phenanthridine derivatives

Abstract

An unprecedented elimination of diazomethane process of a diazo group-bearing hypervalent iodine reagent has been described. This process provides ester and phosphonate radicals, which can react with 2-isocyanobiaryls to afford phenanthridine-6-carboxylate/phosphonate derivatives in moderate to good yields.