Vyacheslav Diev - Reaction of Aliphatic Diazo Compounds: IV. Reaction of Diphenyldiazomethane with Substituted Imides of Maleic and Itaconic Acids

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  Publication Details (including relevant citation   information):

  Russ.   J. Org. Chem. (Eng. Transl.),   2002, 38, 281-285


  Diphenyldiazomethane regioselectively adds to 2-R-substituted   maleimides to yield 1-pyrazoline derivatives,   1-R-7-aryl-6,8-dioxo-4,4-diphenyl-2,3,7-triazabicyclo[3.3.0]oct-2-enes   that on heating liberate nitrogen to afford substituted   3-azabicyclo[3.1.0]hexanes. To the N-arylsubstituted   imides of itaconic acid the diphenyldiazomethane adds to furnish   5-aryl-4,6-dioxo-1,1-diphenyl-5-azaspiro[2.4]heptanes.

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