2-Methyl-3′-(4-methyl­phen­yl)-4′-(2-nitro­phen­yl)-4′H-spiro­chroman-3,5′-isoxazol-4-one

摘要

The title compound, C 25 H 20 N 2 O 5 , crystallizes with two mol­ecules ( A and B ) in the asymmetric unit with similar conformations. The five-membered rings are both in envelope conformations with the spiro C atom as the flap. The six-membered heterocycles display half-chair conformations. The mean plane through the isoxazole ring is nearly perpendicular to those through the spiro-chroman system and the 4-nitro­phenyl moieties, as indicated by the dihedral angles of 81.42 (9) and 87.58 (8)°, respectively, between them in mol­ecule A . Equivalent data for mol­ecule B are 75.58 (9) and 84.15 (8)°, respectively. The p -tolyl plane makes a dihedral angles of 24.10 (9) and 28.78 (8)° with the isoxazole ring in mol­ecules A and B , respectively. In the crystal, mol­ecules are linked by C—H⋯O and C—H⋯N hydrogen bonds and C—H⋯ π inter­action, forming a three-dimensional network.