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Acta Cryst. (2013). E69, o1055  [ doi:10.1107/S1600536813014967 ]

Methyl 4-anilino-2',5-dioxo-1',2'-dihydro-5H-spiro[furan-2,3'-indole]-3-carboxylate

R. Gangadharan, K. Sethusankar, S. E. Kiruthika and P. T. Perumal

Abstract: In the title compound, C19H14N2O5, the spiro junction links an oxindole moeity and a furan ring, which subtend a dihedral angle of 83.49 (6)°. The molecular structure features an N-H...O hydrogen bond, which generates an S(6) ring motif. The crystal packing is governed by two N-H...O interactions, one of which generates a centrosymmetric R22(14) dimer. The other N-H...O interaction along with a C-H...O hydrogen bond contributes to the formation of a C22[R22(9)] dimeric chain running along the b-axis direction.

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