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3',7',7'-Trimethyl-1'-phenyl-5',6',7',8'-tetra-hydro-spiro-[indoline-3,4'-(1H,4H-pyrazolo-[3,4-b]chromene)]-2,5'-dione.

ABSTRACT: The title spiro-oxindole compound, C(26)H(23)N(3)O(3), was prepared by the reaction of isatin, 3-methyl-1-phenyl-2-pyrazolin-5-one and 5,5-dimethyl-cyclo-hexane-1,3-dione in an ethanol solution. The fused cyclo-hexene ring adopts an envelope conformation. The dihedral angle between the aromatic and pyrazoline rings is 23.70?(8)°. An intra-molecular C-H?O inter-action occurs. The crystal structure is stabilized by N-H?N hydrogen-bonding inter-actions, leading to a zigzag chain along the b axis.

SUBMITTER: Zhao LQ

PROVIDER: S-EPMC3011720 | biostudies-literature | 2010 Nov

REPOSITORIES: biostudies-literature

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3',7',7'-Trimethyl-1'-phenyl-5',6',7',8'-tetra-hydro-spiro-[indoline-3,4'-(1H,4H-pyrazolo-[3,4-b]chromene)]-2,5'-dione.

Zhao Li-Qin LQ Li Bin B Li Yi-Qun YQ

Acta crystallographica. Section E, Structure reports online 20101110 Pt 12

The title spiro-oxindole compound, C(26)H(23)N(3)O(3), was prepared by the reaction of isatin, 3-methyl-1-phenyl-2-pyrazolin-5-one and 5,5-dimethyl-cyclo-hexane-1,3-dione in an ethanol solution. The fused cyclo-hexene ring adopts an envelope conformation. The dihedral angle between the aromatic and pyrazoline rings is 23.70 (8)°. An intra-molecular C-H⋯O inter-action occurs. The crystal structure is stabilized by N-H⋯N hydrogen-bonding inter-actions, leading to a zigzag chain along the b axis. ...[more]

PMID: 21589419

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