Synthesis of 1 H ‐Indazoles and Quinazolines Using Additive Intermediates of Grignard Reagents to 2‐Amino Benzonitriles

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We have developed a convenient and efficient approach to 1 H ‐indazoles in one pot under air atmosphere, using additive intermediates of Grignard reagents to 2‐aminobenzonitriles via a FeCl 3 /Bpy catalyzed N–N coupling. Besides, such intermediates could react with esters in one pot to yield quinazolines promoted by BiCl 3 /Ph 3 P. Both 1 H ‐indazoles and quinazolines were prepared in good to excellent yields. The possible mechanisms for the formation of 1 H ‐indazoles and quinazolines were proposed.