Synthesis of Cinnolin-3(2<i>H</i>)‑one Derivatives from Rh-Catalyzed Reaction of Azobenzenes with Diazotized Meldrum’s Acid

Abstract

A synthetic method of a wide range of cinnolin-3­(2<i>H</i>)-one derivatives is developed from the reaction of symmetrical as well as unsymmetrical azobenzenes with diazotized Meldrum’s acid <i>via</i> Rh-catalyzed C–H alkylation followed by cyclization