A Convenient Solid-Phase Synthesis of N,2-Diaryl Diazenecarboxamides

Abstract

A convenient solid-phase method using ferric nitrate to oxidize substituted semicarbazide for preparing azo ureas has been reported first time. This method only needs room temperature, cheap reagents, simple instrument and short reaction time. Eight N,2-diaryl diazenecarboxamides have been synthesized in excellent yields.