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5-(Biphenyl-4-yl)-3-(3-meth-oxy-benzyl-idene)furan-2(3H)-one.

ABSTRACT: In the title compound, C(24)H(18)O(3), the dihedral angles between the mean planes of the five-membered furan ring and the meth-oxy-substituted benzene and the adjacent and outer biphenyl benzene rings are 2.43 (7), 4.48 (7) and 30.47 (8)°, respectively. The crystal packing is stabilized by weak C-H⋯O and C-H⋯π inter-molecular hydrogen bonds and π-π stacking inter-actions [centroid-centroid distances = 3.8752 (8) and 3.8331 (8) Å].

SUBMITTER: Jasinski JP

PROVIDER: S-EPMC3200951 | biostudies-literature |

REPOSITORIES: biostudies-literature

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2-{[2-(2-Hy-droxy-3-meth-oxy-benzyl-idene)hydrazin-1-yl-idene]meth-yl}-6-meth-oxy-phenol.

Project description:The title compound, C(16)H(16)N(2)O(4), was obtained from the reaction of hydrazine hydrate and o-vanilin in absolute ethanol. The mol-ecule is almost planar (except for the methyl H atoms), with a mean deviation from the plane of 0.0259?Å. The mol-ecular structure also exhibits an approximate non-crystallographic twofold axis. Intra-molecular O-H?N hydrogen bonds occur. In the crystal, inter-molecular C-H?O hydrogen bonds generate mol-ecular zigzag sheets. The sheets stack through C-H?? inter-actions, leading to a three-dimensional-network.

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2-{[2-(2-Hy-droxy-5-meth-oxy-benzyl-idene)hydrazin-1-yl-idene]meth-yl}-4-meth-oxy-phenol.

Project description:The title phenyl-hydrazine derivative, C16H16N2O4, has a crystallographically imposed centre of symmetry. Except for the methyl group, all non-H atoms are almost coplanar (r.m.s. deviation = 0.0095 Å). Intra-molecular O-H⋯N hydrogen bonds are observed, generating S(6) graph-set ring motifs.

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N-[(Z)-4-Meth-oxy-benzyl-idene](meth-oxy-carbon-yl)methanamine oxide.

Project description:The title compound, C(11)H(13)NO(4), contains a nitrone group, C=N-O-R, the geometry of which shows a Z configuration with near planarity (r.m.s. deviation = 0.0787 Å) around the C=N double bond. An intra-molecular C-H⋯O hydrogen bond generates an S(6) ring motif. In the crystal packing, mol-ecules are linked into R(2) (2)(12) dimers and R(2) (2)(14) rings via C-H⋯O inter-molecular hydrogen bonds.

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3-(3-Meth-oxy-benzyl-idene)chroman-4-one.

Project description:In the title compound, C(17)H(14)O(3), the dihedral angle between the meth-oxy-benzene unit and the benzene ring of the chromanone system is 64.12 (3)°. The crystal structure is stabilized by weak C-H⋯O inter-actions.

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(Z)-2-{2,4-Dimeth-oxy-6-[(E)-4-meth-oxy-styr-yl]benzyl-idene}quinuclidin-3-one.

Project description:The crystal structure of the title compound, C(25)H(27)NO(4), shows the presence of a double bond with Z geometry which connects the quinuclidin-3-one ring and the trimeth-oxy-resveratrol moiety. The dihedral angle between the two benzene rings in the stilbene skeleton is 32.80?(8)°.

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3-({4-[(2-Methyl-benzyl-idene)amino]-5-sulfanyl-idene-1H-1,2,4-triazol-3-yl}meth-yl)-1,3-benzoxazol-2(3H)-one.

Project description:In the title compound, C(18)H(15)N(5)O(2)S, a weak intra-molecular C-H?S hydrogen bond results in a small dihedral angle of 3.71?(9)° between the methyl-phenyl and triazole rings, which, in turn, form dihedral angles of 80.09?(8) and 77.32?(8)°, respectively, with the benzoxazolone mean plane. In the crystal, N-H?O hydrogen bonds link mol-ecules into chains along [001], and weak C-H?N hydrogen bonds and ?-? inter-actions between the five- and six-membered rings [centroid-centroid distances = 3.5074?(11) and 3.616?(1)?Å] consolidate the crystal packing.

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(2-Meth-oxy-benz-yl)(2-meth-oxy-benzyl-idene)aza-nium (2-meth-oxy-phen-yl)methanaminium tetra-chloridozincate(II) monohydrate.

Project description:The title compound, (C(8)H(12)NO)(C(16)H(18)NO(2))[ZnCl(4)]·H(2)O, was obtained as a by-product of the Zn(2+) and HCl catalyzed condensation of (2-meth-oxy-phen-yl)methanamine in water. Both cations feature an intra-molecular N-H?O hydrogen bond. In the crystal, the components are linked by an extensive three-dimensional network of N-H?O, O-H?Cl and N-H?Cl hydrogen bonds (three of them bifurcated). Weak C-H?O intera-ctions also occur.

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8-Meth-oxy-3-(4-methyl-benzyl-idene)-6-(prop-1-en-yl)chroman-4-one.

Project description:In the title compound, C(21)H(20)O(3), the tolyl ring makes a dihedral angle of 31.11 (6)° with the benzene ring of the chromanone unit. The pyrone ring adopts a half-chair conformation. The mol-ecular structure is stabilized by a weak intra-molecular C-H⋯O inter-action and the crystal packing is stabilized by weak inter-molecular C-H⋯O inter-actions and a C-H⋯π inter-action.

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2-[({2-[(2-Hy-droxy-5-meth-oxy-benzyl-idene)amino]-eth-yl}imino)-meth-yl]-4-meth-oxy-phenol.

Project description:The asymmetric unit of the title compound, C(18)H(20)N(2)O(4), contains one-half mol-ecule with an inversion center located at the centroid of the mol-ecule. In the crystal, mol-ecules are linked by C-H?? inter-actions, forming layers parallel to (101). An intra-molecular O-H?N hydrogen bond also occurs.

| S-EPMC3379345 | biostudies-literature

(E)-2-[4-(Trifluoro-meth-oxy)benzyl-idene]indan-1-one.

Project description:In the title compound, C(17)H(11)F(3)O(2), the dihydro-indene ring is approximately planar with a maximum deviation of 0.024?(2)?Å and makes a dihedral angle of 3.17?(8)?Å with the adjacent benzene ring. In the crystal, mol-ecules are inter-connected by C-H?O inter-actions, forming an infinite chain along the c axis.

| S-EPMC3213585 | biostudies-literature

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