Rac-Methyl (1R,3′S)-1′,1′′-dimethyl-2,2′′-dioxo-2H-dispiro[acenaphthylene-1,2′-pyrrolidine-3′,3′′-indoline]-4′-carboxylate

G Ganesh,Panneer Selvam Yuvaraj,A Subbiahpandi,Boreddy S R Reddy,Chinthalapuri Divakara

doi:10.1107/s1600536813000470

Abstract

In the title compound, C26H22N2O4, the pyrrolidine ring adopts a twisted conformation and the other five-membered rings adopt envelope conformations with the spiro C atoms as the flap atoms. The naphthalene ring system of the dihydroacenaphthylene group forms dihedral angles of 89.2 (9) and 75.5 (6)° with the pyrrolidine and indole rings, respectively. The pyrrolidine ring makes a dihedral angle of 80.1 (9)° with the indole ring. In the crystal, molecules are linked by weak C—H⋯O hydrogen bonds, forming chains along the b-axis direction.

Highlights

In the title compound, C26H22N2O4, the pyrrolidine ring adopts a twisted conformation and the other five-membered rings adopt envelope conformations with the spiro C atoms as the flap atoms
Molecules are linked by weak C—HÁ Á ÁO hydrogen bonds, forming chains along the b-axis direction
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: LX2278)

Summary

Structure Reports Online

C26H22N2O4, the pyrrolidine ring adopts a twisted conformation and the other five-membered rings adopt envelope conformations with the spiro C atoms as the flap atoms. The naphthalene ring system of the dihydroacenaphthylene group forms dihedral angles of 89.2 (9) and 75.5 (6) with the pyrrolidine and indole rings, respectively. The pyrrolidine ring makes a dihedral angle of 80.1 (9) with the indole ring. Molecules are linked by weak C—HÁ Á ÁO hydrogen bonds, forming chains along the b-axis direction. Related literature For the biological activity of naphthalene derivatives, see: Wiltz et al (1998); Wright et al (2000); Varma et al (1994). See: Wei et al (2012). See: Cremer & Pople (1975)

Data collection

HÁ Á ÁA

Special details