7,11-Bis(4-methylphenyl)-2,4,8,10-tetraazaspiro[5.5]undecane-1,3,5,9-tetraone

Abstract

In the molecule of the title compound, C21H20N4O4, the two methylphenyl rings are oriented at a dihedral angle of 59.32 (4)°. The other two rings have flattened-boat conformations. In the crystal structure, intermolecular N—H...O hydrogen bonds link the molecules. There are C—H...π contacts between a methylphenyl ring and methyl and methine groups.