Synthesis of 1,3-diazabicyclo[3.1.0]hex-3-ene system under microwave irradiation

An efficient and straightforward approach for the three-component synthesis of 1,3-diazabicyclo[3.1.0]hex-3-enes from available aldehydes, premade Ketoaziridine and ammonium acetate under microwave irradiation and solvent free conditions is reported. The synthesized compounds showed good photochromic behaviour in crystalline and solution state.