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Methyl (3R,3'S)-1',1''-dimethyl-2,2''-dioxodispiro-[indoline-3,2'-pyrrolidine-3',3''-indoline]-4'-carboxyl-ate.

ABSTRACT: In the title compound, C(22)H(21)N(3)O(4), the central pyrrolidine ring adopts an envelope conformation with the N atom in the flap position. The indoline ring systems are almost perpendic-ular to the mean plane of the pyrrolidine ring, making dihedral angles of 86.4?(8) and 83.1?(8)°. The acetate group attached to the pyrrolidine ring assumes an extended conformation. In thecrystal, N-H?O hydrogen bonds result in the formation of a C(7) chain running along [100]. The crystal packing also features ?-? inter-actions [centroid-centroid distance = 3.2032?(11)?Å].

SUBMITTER: Ganesh G

PROVIDER: S-EPMC3470252 | biostudies-other | 2012 Oct

REPOSITORIES: biostudies-other

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Methyl (3R,3'S)-1',1''-dimethyl-2,2''-dioxodispiro-[indoline-3,2'-pyrrolidine-3',3''-indoline]-4'-carboxyl-ate.

Ganesh G G Yuvaraj Panneer Selvam PS Govindan E E Reddy Boreddy S R BS Subbiahpandi A A

Acta crystallographica. Section E, Structure reports online 20120908 Pt 10

In the title compound, C(22)H(21)N(3)O(4), the central pyrrolidine ring adopts an envelope conformation with the N atom in the flap position. The indoline ring systems are almost perpendic-ular to the mean plane of the pyrrolidine ring, making dihedral angles of 86.4 (8) and 83.1 (8)°. The acetate group attached to the pyrrolidine ring assumes an extended conformation. In thecrystal, N-H⋯O hydrogen bonds result in the formation of a C(7) chain running along [100]. The crystal packing also featur ...[more]

PMID: 23125696

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A triclinic polymorph of methyl (3R,3'S)-1',1''-dimethyl-2,2''-dioxodispiro-[indoline-3,2'-pyrrolidine-3',3''-indoline]-4'-carboxyl-ate.

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