The first example of the cycloaddition of in situ-generated azomethine imine under microwave conditions is described. The reaction
of 6-aryl-1,5-diazabicyclo[3.1.0]hexanes with 1,3-diphenylprop-2-en-1-ones proceeds regio- and stereoselectively giving
mostly good yields of the corresponding perhydropyrazolopyrazoles. The products of the reaction undergo cycloreversion under the
reaction conditions.