Efficient Synthesis of 2‐Arylamino‐2‐imidazolines and 2‐Ami‐ nobenzimidazoles with Aminoiminomethanesulfonic Acid Derivatives

Abstract A highly efficient synthesis of 2‐arylamino‐2‐imidazolines and 2‐aminobenzimidazoles from aminoimino‐methanesulfonic acid derivatives is described. The method is simple and practical, generating imidazoline and benzimidazoline derivatives in excellent isolated yields.