title: [Synthesis of 3-substituted pyrrolo[3,4-c]pyrazole-4,6(1H,5H)-dione derivatives by addition of aryldiazomethane on N-phenylmaleimide (author's transl)].
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D003978:Diazomethane / Q000031:analogs & derivatives*; D008301:Maleimides; D011720:Pyrazoles / Q000138:chemical synthesis*; D011758:Pyrroles / Q000138:chemical synthesis*
chemical_list: D008301:Maleimides; D011720:Pyrazoles; D011758:Pyrroles; D003978:Diazomethane