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1'-Methyl-4'-phenyl-dispiro-[chromane-3,3'-pyrrolidine-2',3''-indoline]-2,2''-dione.

ABSTRACT: In the title compound, C(26)H(22)N(2)O(3), the pyrrolidine ring adopts an envelope conformation with the N atom as the flap. In the crystal, pairs of centrosymmetrically related mol-ecules are linked into dimers by N-H⋯O hydrogen bonds. In addition, there are C-H⋯O hydrogen bonds.

SUBMITTER: Ganapathy J

PROVIDER: S-EPMC3297956 | biostudies-literature |

REPOSITORIES: biostudies-literature

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1',6-Dimethyl-4'-phenyl-dispiro-[1-benzopyran-3(4H),3'-pyrrolidine-2',3''-indoline]-2,2''-dione.

Project description:In the title compound, C(27)H(24)N(2)O(3), the five-membered pyrroldine ring adopts an envelope conformation (with the N atom in the flap position) and the six-membered pyran-one ring of the coumarine ring system adopts a slightly distorted boat conformation. The oxindole unit makes dihedral angles of 89.7?(1) and 25.6?(1)°, respectively, with the pyrrolidine ring and the coumarin ring system. The mol-ecular structure is stabilized by two intra-molecular C-H?O contacts and two intra-molecular ?-? inter-actions [centroid-centroid seperations of 3.514?(1) and 3.623?(1)?Å]. The crystal packing features N-H?O hydrogen bonds, which link the mol-ecules into cyclic centrosymmetric R(2) (2)(8) dimers, and C-H?? inter-actions.

| S-EPMC3239137 | biostudies-literature

1'-Methyl-4'-(4-methyl-phen-yl)dispiro-[1-benzopyran-3(4H),3'-pyrrolidine-2',3''-indoline]-2,2''-dione.

Project description:In the title compound, C(27)H(24)N(2)O(3), the pyrroldine ring adopts a twist conformation, while the six-membered pyran-one ring of the coumarin ring system is in a sofa conformation. In the crystal, pairs of N-H?O hydrogen bonds link the mol-ecules into inversion R(2) (2)(8) dimers. These dimers are further connected via C-H?O hydrogen bonds.

| S-EPMC3254352 | biostudies-literature

1'-Methyl-4'-phenyl-2''-sulfanylidene-dispiro-[indoline-3,2'-pyrrolidine-3',5''-1,3-thia-zolidine]-2,4''-dione.

Project description:The title compound, C(20)H(17)N(3)O(2)S(2), crystallizes with two mol-ecules in the asymmetric unit. The pyrrolo-dine rings have envelope conformations in both mol-ecules, the N atoms deviating by 0.574?(3) and 0.612?(2)?Å from the mean planes through the other ring atoms. The 1'-methyl and 4'-phenyl groups on the pyrrolidine rings are substituted in equatorial positions. In the crystal, mol-ecules are linked into a three-dimensional network by N-H?O, N-H?N and C-H?O and N-H?? hydrogen bonds.

| S-EPMC3275027 | biostudies-literature

1'-Methyl-4'-(4-methyl-phen-yl)dispiro-[indane-2,3'-pyrrolidine-2',3''-indoline]-1,2''-dione.

Project description:In the title mol-ecule, C(27)H(24)N(2)O(2), the pyrrolidin-2-one ring is almost planar (r.m.s. deviation = 0.003?Å), the pyrrolidine ring has an envelope conformation (the N atom is the flap atom) and the cyclo-penta-none ring is twisted about the C(q)-C(m) bond (q = quaternary and m = methylene). The ketone O atoms are directed to opposite sides of the mol-ecule. Supra-molecular chains along the a axis are formed in the crystal packing mediated by N-H?N and C-H?O inter-actions. These are connected into layers in the ab plane via C-H?? inter-actions.

| S-EPMC3393996 | biostudies-literature

1'-Methyl-2-oxo-5'-phenyl-spiro-[indoline-3,3'-pyrrolidine]-4',4'-dicarbo-nitrile.

Project description:The title spiro-compound, C(20)H(16)N(4)O, crystallizes with four independent mol-ecules in the asymmetric unit. In all of them, the oxindole unit is planar, the r.m.s. deviations ranging from 0.07 to 0.08?Å, while the pyrrolinyl ring adopts an envelope conformation (with the N atom representing the flap). In the crystal, adjacent mol-ecules are linked by N-H?N and N-H?O hydrogen bonds.

| S-EPMC2980256 | biostudies-literature

5''-Benzyl-idene-5-chloro-1',1''-dimethyl-4'-phenyl-dispiro-[indoline-3,2'-pyrrolidine-3',3''-piperidine]-2,4''-dione.

Project description:The title compound, C30H28ClN3O2, features two spiro links, one connecting the piperidine and pyrrolidine rings, and the other connecting the pyrrolidine ring and indole residue. The configuration about the ethene bond is E. The piperidine ring adopts a half-chair conformation where the C atom connected to the spiro-C atom lies 0.713?(3)?Å out of the plane of the remaining five atoms (r.m.s. deviation = 0.086?Å). The pyrrolidine ring has an envelope conformation with the flap atom being the methyl-ene C atom. Centrosymmetric eight-membered {?HNCO}2 amide synthons feature in the crystal packing. These are consolidated into a three-dimensional architecture by phen-yl-pyrrolidine C-H?N and chloro-benzene-pyrrolidine-bound phenyl C-H?? inter-actions.

| S-EPMC4029213 | biostudies-literature

5-(4-Fluoro-benzyl-idene)-4'-(4-fluoro-phen-yl)-1,1'-dimethyl-dispiro-[piperidine-3,3'-pyrrolidine-2',3''-indoline]-4,2''-dione.

Project description:The asymmetric unit of the title compound, C(30)H(27)F(2)N(3)O(2), contains two independent mol-ecules. The pyrrolidine five-membered ring assumes an envelope conformation (with the CH(2) atom at the flap) in one mol-ecule and a twisted conformation in the other one. In both independent mol-ecules, the 4-piperidinone rings adopt a similar twisted chair conformation. In the crystal, the two independent mol-ecules form an R(2) (2)(8) dimer through a pair of N-H?O hydrogen bonds; the R(2) (2)(8) dimers are connected via weak C-H?O hydrogen bonds, leading to a chain extending along the c axis.

| S-EPMC3470200 | biostudies-literature

4'-(4-Methoxy-phen-yl)-1,1',1''-trimethyl-dispiro-[indoline-3,2'-pyrrolidine-3',3''-pyrrolidine]-2,2'',5''-trione.

Project description:In the title compound, C(24)H(25)N(3)O(4), the pyrrolidine ring adopts an envelope conformation while the pyrrolidine-2'',5''-dione ring adopts a twist conformation. The indoline unit is planar [maximum deviation of -0.050?(9)?Å] and forms a dihedral angle of 40.36?(4)° with the methoxy-phenyl ring. Intra-molecular C-H?O hydrogen bonds are observed. In the crystal, mol-ecules are linked into a two-dimensional network parallel to the ab plane by inter-molecular C-H?O hydrogen bonds and C-H?? inter-actions.

| S-EPMC2969413 | 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

rac-Methyl (1R,3'S)-1',1''-dimethyl-2,2''-dioxo-2H-dispiro-[acenaphthyl-ene-1,2'-pyrrolidine-3',3''-indoline]-4'-carboxyl-ate.

Project description:In the title compound, C(26)H(22)N(2)O(4), 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 dihydro-acenaphthyl-ene 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, mol-ecules are linked by weak C-H?O hydrogen bonds, forming chains along the b-axis direction.

| S-EPMC3569768 | biostudies-literature

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