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1'-Methyl-4'-phenyldispiro-[indan-2,2'-pyrrolidine-3',2''-indan]-1,3,1''-trione.

ABSTRACT: The conformation of the title compound, C(27)H(21)NO(3), is stabilized by a weak intra-molecular C-H⋯O hydrogen bond, which generates an S(6) ring motif. The pyrrolidine ring adopts a half-chair conformation. Both of the other five-membered rings are in envelope conformations. No significant inter-molecular hydrogen bonds are observed.

SUBMITTER: Wei AC

PROVIDER: S-EPMC3200932 | biostudies-literature |

REPOSITORIES: biostudies-literature

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4'-(4-Bromo-phen-yl)-1'-methyl-dispiro-[indan-2,2'-pyrrolidine-3',2''-indan]-1,3,1''-trione.

Project description:In the title compound, C(27)H(20)BrNO(3), the pyrrolidine ring adopts a half-chair conformation, while the other five-membered rings adopt flattened envelope conformations with the spiro C atoms as the flap atoms. An intra-molecular C-H?O hydrogen bond occurs, generating an S(6) ring. In the crystal, mol-ecules are connected via weak C-H?O hydrogen bonds, forming chains along the c axis.

| S-EPMC3247508 | biostudies-literature

4'-(4-Chlorophenyl)-1'-methyldispiro[indan-2,2'-pyrrolidine-3',2''-indan]-1,3,1''-trione.

Project description:In the title compound, C(27)H(20)ClNO(3), the two cyclo-pentane rings adopt envelope conformations. The pyrrolidine ring also adopts an envelope conformation (with the spiro C atom as the flap) and its least-squares plane (fitted to five atoms) makes dihedral angles of 66.50 (9), 77.36 (8) and 73.76 (8)° with the chloro-benzene ring and the two 2,3-dihydro-1H-indene ring systems, respectively. The mol-ecular conformation is stabilized by an intra-molecular C-H⋯O hydrogen bond, which generates an S(6) ring motif. In the crystal, mol-ecules are linked by C-H⋯O hydrogen bonds into chains running parallel to the [001] direction.

| S-EPMC3200810 | biostudies-literature

1'-Methyl-4'-[4-(trifluoro-meth-yl)phen-yl]dispiro-[indan-2,2'-pyrrolidine-3',2''-indan]-1,3,1''-trione.

Project description:In the title compound, C(28)H(20)F(3)NO(3), the pyrrolidine ring adopts a half-chair conformation. The other five-membered rings adopt envelope conformations with the spiro and methylene C atoms as the flap atoms. In the crystal, mol-ecules are connected via weak C-H?O hydrogen bonds, forming sheets parallel to the bc plane.

| S-EPMC3247509 | biostudies-literature

4'-(3-Bromo-phen-yl)-1'-methyl-dispiro-[indan-2,2'-pyrrolidine-3',2''-indan]-1,3,1''-trione.

Project description:In the title compound, C(27)H(20)BrNO(3), two intra-molecular C-H?O hydrogen bonds both form S(6) rings. The pyrrolidine ring adopts a twisted conformation about the C-C bond bearing the indane ring systems. The other two five-membered rings within the indane systems are in shallow envelope conformations, with the spiro C atoms as the flap atoms. The mean plane of the pyrrolidine ring [maximum deviation = 0.275?(1)?Å] makes dihedral angles of 65.25?(7), 78.33?(6) and 75.25?(6)° with the bromo-substituted benzene ring and the mean planes of the mono- and dioxo-substituted indane rings, respectively. In the crystal, mol-ecules are linked by C-H?O and C-H?N hydrogen bonds into a three-dimensional network. In addition, C-H?? inter-actions are observed.

| S-EPMC3470256 | biostudies-other

4'-[5-(4-Fluoro-phen-yl)pyridin-3-yl]-1'-methyl-dispiro-[indan-2,2'-pyrrolidine-3',2''-indan]-1,3,1''-trione.

Project description:In the title compound, C(32)H(23)FN(2)O(3), the pyrrolidine ring adopts an envelope conformation. The monoketo- and diketo-substituted five-membered rings are in envelope and half-chair conformations, respectively. The mol-ecular structure is stabilized by an intra-molecular C-H?O hydrogen bond, which generates an S(6) ring motif. In the crystal, mol-ecules are linked via inter-molecular C-H?N and C-H?O hydrogen bonds into a three-dimensional network. The crystal structure is further consolidated by C-H?? inter-actions.

| S-EPMC3200886 | biostudies-other

4'-(4-Fluoro-phen-yl)-1'-methyl-dispiro-[indane-2,2'-pyrrolidine-3',2''-indane]-1,3,1''-trione methanol hemisolvate.

Project description:The asymmetric unit of the title compound, C29H24FNO5·0.5CH3OH, contains two independent mol-ecules and a one methanol solvent mol-ecule. The methanol mol-ecule is O-H?O hydrogen bonded to one of the independent mol-ecules. The pyrrolidine rings in both mol-ecules adopt half-chair conformations, while the cyclo-pentane rings within the indane groups are in flattened envelope conformations, with the spiro C atoms forming the flaps. The benzene rings of the indane ring systems form a dihedral angle of 35.06?(7)° in one independent mol-ecule and 31.16?(8)° in the other. The fluoro-substituted benzene ring forms dihedral angles of 65.35?(6) and 85.87?(7)° with the indane group benzene rings in one mol-ecule, and 72.78?(8) and 77.27?(8)° in the other. In each mol-ecule, a weak intra-molecular C-H?O hydrogen bond forms an S(6) ring motif. In the crystal, weak C-H?O, C-H?N and C-H?F hydrogen bonds link the mol-ecules into a three-dimensional network.

| S-EPMC3648276 | biostudies-literature

Crystal structure of 4'-(2-meth-oxy-quinolin-3-yl)-1'-methyl-dispiro-[indan-2,2'-pyrrolidine-3',3''-indoline]-1,3,2''-trione.

Project description:In the title compound, C30H23N3O4, the central 1-methyl-pyrrolidine ring adopts a twist conformation on the N-CH2 bond. The pyrrolidin-2-one ring of the indolin-2-one ring system also has a twist conformation on the C-C bond involving the spiro C atom and the carbonyl C atom. The five-membered ring of the indene-1,3-dione moiety has an envelope conformation with the spiro C atom as the flap. The quinoline ring system adopts an almost planar conformation (r.m.s. deviation = 0.04 Å). The mean planes of the indolin-2-one ring system, the indene-1,3-dione ring system and the the quinoline ring system are inclined to the mean plane of the central 1-methyl-pyrrolidine ring by 77.97 (7), 86.98 (7) and 46.58 (6)°, respectively. In the crystal, mol-ecules are linked via N-H⋯N hydrogen bonds, forming chains along the b axis. The chains are linked via a number of C-H⋯O hydrogen bonds, and C-H⋯π and π-π inter-actions [inter-centroid distance = 3.7404 (9) Å], forming a three-dimensional network.

| S-EPMC4719967 | biostudies-literature

7'-Phenyl-5',6',7',7a'-tetra-hydro-dipiro[indan-2,5'-pyrrolo-[1,2-c][1,3]thia-zole-6',2''-indan]-1,3,1''-trione.

Project description:The asymmetric unit of the title compound, C(28)H(21)NO(3)S, contains two mol-ecules with similar geometries. The thia-zolidine rings adopt half-chair conformations while the pyrrolidine and the diketo-substituted five-membered carbocyclic rings are in envelope conformations with the spiro C atoms at the flaps. In one mol-ecule, the phenyl ring forms dihedral angles of 57.76 (12) and 71.79 (12)° with the fused benzene rings and the fused benzene rings form a dihedral angle of 57.75 (13)°. The corresponding dihedral angles in the other mol-ecule are 60.04 (12), 72.93 (12) and 54.51 (13)°. The mol-ecular structure is stabilized by intra-molecular C-H⋯O hydrogen bonds, which generate S(6) ring motifs. In the crystal, mol-ecules are linked via C-H⋯O and C-H⋯N hydrogen bonds into layers lying parallel to the ab plane.

| S-EPMC3238881 | biostudies-literature

1'-Methyl-4'-(1-naphth-yl)-1'',2'',3'',4''-tetra-hydro-indane-2-spiro-2'-pyrrolidine-3'-spiro-2''-naphthalene-1,3,1''-trione.

Project description:In the title compound, C(32)H(25)NO(3), the pyrrolidine ring adopts an envelope conformation, whereas the cyclo-hexa-none ring in the tetra-hydro-naphthalene fused-ring system adopts a half-chair conformation. The indanedione unit is oriented at an angle of 58.9 (1)° with respect to the naphthyl ring system. Three intra-molecular C-H⋯O close contacts and an intra-molecular C-H⋯π inter-action are observed. In the crystal, mol-ecules associate via C-H⋯O hydrogen bonds, forming a helical chain with a C(10) motif along the b axis.

| S-EPMC3052033 | biostudies-literature

7'-(4-Bromo-phen-yl)-5',6',7',7a'-tetra-hydro-dispiro-[indan-2,5'-pyrrolo-[1,2-c][1,3]thia-zole-6',2''-indan]-1,3,1''-trione.

Project description:In the title compound, C(28)H(20)BrNO(3)S, the thia-zolidine, pyrrolidine and two five-membered carbocyclic rings are in envelope conformations. The bromo-bound phenyl ring forms dihedral angles of 61.97 (18) and 88.30 (17)° with the other two benzene rings. The two benzene rings form a dihedral angle of 30.3 (2)°. The mol-ecular structure features an intra-molecular C-H⋯O hydrogen bond, which generates an S(6) ring motif. In the crystal, mol-ecules are linked into inversion dimers by pairs of C-H⋯O hydrogen bonds.

| S-EPMC3238931 | biostudies-literature

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