In the title compound, C(23)H(19)NO, the oxindole residue is essentially planar and is almost perpendicular to the phenyl rings [dihedral angles = 72.1 (6) and 77.6 (6)°]. The mol-ecular packing is stabilized by C-H⋯O hydrogen bonds and C-H⋯N inter-actions. 
DOI: 10.1107/S1600536808009446


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@inproceedings{Nirmala20081Allyl33diphenylindolin2one, title={1-Allyl-3,3-diphenyl­indolin-2-one}, author={S. Nirmala and E. Theboral Sugi Kamala and L. Sudha and A. R. Naresh Raj and C. A. M. A. Huq}, booktitle={Acta crystallographica. Section E, Structure reports online}, year={2008} }