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3''-(2-Fluoro-benzyl-idene)-4'-(2-fluoro-phen-yl)-1'-methyl-dispiro-[acenaphthyl-ene-1,2'-pyrrolidine-3',1''-cyclo-penta-ne]-2,2''-dione.

ABSTRACT: In the title compound, C(33)H(25)F(2)NO(2), the acenaphthene ring system forms dihedral angles of 50.93?(14) and 36.89?(14)° with the benzene rings. The pyrrolidine and cyclo-penta-none rings adopt envelope (with the N atom as the flap) and twisted conformations, respectively. In the crystal, C-H?O and C-H?F inter-actions link the mol-ecules.

SUBMITTER: Chen GZ

PROVIDER: S-EPMC3569782 | biostudies-literature |

REPOSITORIES: biostudies-literature

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4'-(4-Bromo-phen-yl)-1'-methyl-dispiro-[acenaphthyl-ene-1,2'-pyrrolidine-3',2''-indane]-2,1''(1H)-dione.

Project description:In the title compound, C(30)H(22)BrNO(2), the cyclo-pentane ring of the dihydro-acenaphthyl-ene group and the pyrrolidine ring are both in envelope conformations with the spiro C atom and N atom, respectively, as the flap atom. The cyclo-pentane ring of the indane group adopts a half-chair conformation. A weak intra-molecular C-H?O hydrogen bond forms an S(8) ring motif. The naphthalene ring system of the dihydro-acenaphthyl-ene group forms dihedral angles of 41.76?(6) and 42.17?(6)° with the benzene ring of the bromo-phenyl group and the benzene ring of the indane group, respectively. The dihedral angle between the two benzene rings is 83.92?(7)°. In the crystal, mol-ecules are linked by weak C-H?O and C-H?N hydrogen bonds into a two-dimensional network parallel to the ac plane. Weak C-H?? inter-actions are also observed.

| S-EPMC3344476 | biostudies-literature

1'-Methyl-4'-[4-(trifluoro-meth-yl)phen-yl]dispiro-[acenaphthyl-ene-1,2'-pyrrolidine-3',2''-indane]-2,1''(1H)-dione.

Project description:In the title compound, C(31)H(22)F(3)NO(2), the pyrrolidine and cyclo-pentane rings within the dihydro-indene ring system are in envelope conformations, with the N atom and the spiro-C atom at the flap, respectively. An intra-molecular C-H?O hydrogen bond forms an S(8) ring motif. The mean plane through the pyrrolidine ring [r.m.s. deviation = 0.179?(2)?Å] makes dihedral angles of 86.30?(13), 88.99?(10) and 79.69?(11)° with the benzene ring, the dihydro-acenaphthyl-ene ring and the mean plane of the indane system, respectively. In the crystal, mol-ecules are linked by C-H?O and C-H?N hydrogen bonds into a two-dimensional network parallel to the ac plane. C-H?? inter-actions further stabilize the crystal structure.

| S-EPMC3344443 | 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

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

Project description: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.

| S-EPMC3297956 | biostudies-literature

3,8-Dimethyl-acenaphthyl-ene-1,2-dione.

Project description:In the title compound, C(14)H(10)O(2), the acenaphthene-quinone core is essentially planar, with an r.m.s. deviation of 0.0140?Å. In the crystal, mol-ecules are connected by ?-? stacking inter-actions [centroid-centroid distances = 3.766?(3), 3.839?(3) and 3.857?(3)?Å], forming columns parallel to the a axis.

| S-EPMC3213570 | biostudies-literature

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

1,5-Bis(penta-fluoro-phen-yl)-3-phenyl-pent-2-ene-1,5-dione.

Project description:In the title compound, C(23)H(8)F(10)O(2), the three arene rings are twisted one with respect to the other: the two perfluorinated arene rings are tilted to each other by an angle of 60.39?(7)°. They are inclined to the non-fluorinated phenyl unit by 38.85?(7) and 78.74?(7)°. The olefinic double bond adopts an E configuration. The carbonyl groups are not in a coplanar alignment with reference to the neighbouring arene rings. The crystal packing features a number of weak C-H?F inter-actions, which leads to the formation of a three-dimensional network.

| S-EPMC2971416 | biostudies-literature

4'-Methyl-14',19'-dioxa-4'-aza-spiro-[acenaphthyl-ene-1,5'-tetra-cyclo-[18.4.0.0(2,6).0(8,13)]tetra-cosa-ne]-1'(24'),8',10',12',20',22'-hexa-ene-2,7'(1H)-dione.

Project description:In the title compound, C33H29NO4, the acenaphthyl-ene ring system is essentially planar (r.m.s. deviation = 0.0290 Å). The pyrrolidine ring adopts a C-envelope conformation with a C atom displaced by 0.671 (2) Å from the mean-plane formed by the remaining ring atoms. The pyrrolidine ring is fused to acenaphthyl-ene ring system making a dihedral angle of 88.0 (7)°. In the crystal, mol-ecules are linked into R(2)2(9) dimers via C-H⋯N and C-H⋯O hydrogen bonds. Two C atoms act as donors to the same O atom acceptor, resulting in the formation of R(2)1(7) ring motifs. These two motifs combine to form hydrogen-bonded sheets running along the a- and b-axis directions.

| S-EPMC3588946 | 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

1'-Methyl-4'-(1-naphth-yl)-3''-(1-naphthyl-methyl-ene)acenaphthene-1-spiro-2'-pyrrolidine-3'-spiro-1''-cyclo-hexane-2,2''-dione.

Project description:In the title compound, C(42)H(33)NO(2), the six-membered cyclo-hexa-none ring adopts a slightly distorted chair conformation and the five-membered pyrrolidine ring is in an envelope conformation. The mol-ecular structure features four intra-molecular C-H?O inter-actions and an intra-molecular C-H?? inter-action. Furthermore, the crystal packing is stabilized by an inter-molecular C-H?O and three inter-molecular C-H?? inter-actions.

| S-EPMC2915050 | biostudies-literature

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