Acta Cryst. (2013). E69, o278
[ doi:10.1107/S1600536813001578 ]

Methyl 4'-(4-fluorophenyl)-1'-methyl-3'-nitromethyl-2-oxospiro[indoline-3,2'-pyrrolidine]-3'-carboxylate

B. K. Revathi, S. Sathya, G. Usha, G. Murugan and M. Bakthadoss

Abstract: In the title compound, C₂₁H₂₀FN₃O₅, the the pyrrolidine ring makes dihedral angles of 84.91 (6) and 62.38 (7)° with the oxindole unit and the fluorophenyl ring, respectively. The pyrrolidine ring assumes an envelope conformation with the spiro C atom as the flap. The crystal packing features weak N-HN and C-HO hydrogen bonds.

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