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author:("sabara, V.")
1.  (2E,4E)-Ethyl 5-(2,4-di­chloro­phenyl­sulfon­yl)penta-2,4-dienoate 
In the title compound, C13H12Cl2O4S, both C=C double bonds adopt an E conformation. The S atom has a distorted tetra­hedral geometry with bond angles ranging from 103.03 (12) to 118.12 (13)°. The eth­oxy­carbonyl group is disordered over two sets of sites, with site-occupancy factors of 0.739 (11) and 0.261 (11). In the crystal, C—H⋯O inter­actions link the mol­ecules into chains mol­ecules running parallel to the a axis.
doi:10.1107/S1600536813021429
PMCID: PMC3884450  PMID: 24427029
2.  Ethyl (2E,4E)-5-(3-bromo­phenyl­sulfon­yl)penta-2,4-dienoate 
In the title compound, C13H13BrO4S, both C=C double bonds adopt an E conformation. The S atom has a distorted tetra­hedral geometry with bond angles ranging from 102.17 (13) to 119.77 (14)°. The ethyl acrylate substituent adopts an extented conformation with all torsion angles close to 180°. In the crystal, mol­ecules are linked into centrosymmetric R 2 2(14) dimers via pairs of C—H⋯O hydrogen bonds.
doi:10.1107/S1600536813005771
PMCID: PMC3629522  PMID: 23634040
3.  (1′S,12′R,13′S,17′S)-15′,15′-Dimethyl-1,2-dihydro-11′,14′,16′,18′-tetra­oxa-7′-aza­spiro­[indole-3,8′-penta­cyclo­[10.6.0.02,9.03,7.013,17]octa­deca­ne]-2,10′-dione 
In the title compound, C22H24N2O6, the indole ring has a twist conformation and the tetra­hydro-2H-pyran-2-one ring a half-chair conformation. One of the pyrrolidine rings adopts an envelope conformation on the N atom, while the other has a twist conformation; the ‘butterfly’ angle between their mean planes is 62.98 (11)°. The dioxolane ring adopts a twist conformation and the tetra­hydro­furan ring has an envelope conformation on the C atom in the fused tetra­hydro-2H-pyran-2-one ring adjacent to the O atom of the tetra­hydro­furan ring. The ‘butterfly’ angle between the mean planes of these two five-membered rings is 69.14 (10)°. In the crystal, mol­ecules are linked by N—H⋯O hydrogen bonds, forming chains along the a axis.
doi:10.1107/S1600536813005436
PMCID: PMC3629507  PMID: 23634025
4.  (6bS*,14R*,14aR*)-Methyl 14-(4-methyl­phen­yl)-7-oxo-6b,6c,7,12b,14,14a-hexa­hydro-1H-pyrano[3,2-c:5,4-c′]dichromene-14a-carboxyl­ate 
In the title compound, C28H22O6, the chromeno ring system is almost planar, with a dihedral angle between the mean planes of the pyran and benzene rings of 1.87 (8)°. The pyran ring bearing the methyl­phenyl substituent has a half-chair conformation while the other pyran ring has an envelope conformation with the tetra­substituted C atom as the flap. The benzene ring of the chromeno ring system is inclined to the benzene ring fused to the latter pyran ring by 74.66 (9)°. These aromatic rings are inclined to the 4-methyl­phenyl ring by 52.67 (9) and 66.63 (10)°, respectively. In the crystal, mol­ecules are linked via C—H⋯O hydrogen bonds, forming a two-dimensional network parallel to the bc plane.
doi:10.1107/S1600536813001244
PMCID: PMC3569797  PMID: 23424543
5.  Diethyl [(2-chloro­anilino)(1,3-diphenyl-1H-pyrazol-4-yl)meth­yl]phospho­nate 
In the title compound, C26H27ClN3O3P, the mean plane of the central pyrazole ring forms a dihedral angle of 71.37 (14)° with the chloro­phenyl ring. In the crystal, mol­ecules are linked by pairs of N—H⋯O hydrogen bonds, forming inversion dimers with R 2 2(10) ring motifs. The 3-phenyl ring is disordered with four C atoms occupying two sets of sites with an occupancy ratio of 0.748 (4):0.252 (4).
doi:10.1107/S1600536812051719
PMCID: PMC3569244  PMID: 23424467
6.  1-(2-Carb­oxy­eth­yl)-5-ethyl-2-methyl­pyridinium chloride 
In the crystal structure of the title salt, C11H16NO2 +·Cl−, the cations and anions are linked by O—H⋯Cl hydrogen bonds. The structure is further stabilized by weak C—H⋯Cl hydrogen bonds.
doi:10.1107/S1600536812038809
PMCID: PMC3470310  PMID: 23125723
7.  (Z)-3-Benzyl-1,5-benzothia­zepin-4(5H)-one 
In the crystal structure of the title compound, C16H13NOS, mol­ecules are linked into cyclic centrosymmetric R 2 2(8) dimers via pairs of N—H⋯O hydrogen bonds. The seven-membered ring adopts a boat conformation.
doi:10.1107/S1600536812029054
PMCID: PMC3414268  PMID: 22904801
8.  (2E,2′E)-Dimethyl 2,2′-[(phenyl­aza­nedi­yl)bis­(methyl­ene)]bis­(3-phenyl­acrylate) 
The C=C double bonds in the title compound, C28H27NO4, adopt an E conformation. In the crystal, pairs of C—H⋯O hydrogen bonds link the mol­ecules into inversion dimers.
doi:10.1107/S1600536812029042
PMCID: PMC3394048  PMID: 22798913
9.  (Z)-3-(2-Chloro­benz­yl)-1,5-benzothia­zepin-4(5H)-one 
In the crystal structure of the title compound, C16H12ClNOS, the mol­ecules are linked into centrosymmetric R 2 2(8) dimers via pairs of N—H⋯O hydrogen bonds. The seven-membered ring adopts a boat conformation.
doi:10.1107/S1600536812029030
PMCID: PMC3394062  PMID: 22798927
10.  2,2′-Diisopropoxy-5,5′-methyl­enedi­benz­alde­hyde 
Mol­ecules of the title compound, C21H24O4, are located on a twofold rotation axis running through the central methyl­ene C atom. The aldehyde group is coplanar with the benzene ring [C—C—C—O = 175.7 (4) °].
doi:10.1107/S1600536812028048
PMCID: PMC3393997  PMID: 22798862
11.  Diethyl [(2-bromo­anilino)(1,3-diphenyl-1H-pyrazol-4-yl)meth­yl]phospho­nate 
In the title compound, C26H27BrN3O3P, the central pyrazole ring forms a dihedral angle of 71.7 (2)° with the bromo­phenyl ring. In the crystal, mol­ecules are linked by pairs of N—H⋯O hydrogen bonds, forming inversion dimers with R 2 2(10) ring motifs. Four C atoms of the 3-phenyl ring are disordered over two sets of sites [site occupancies = 0.745 (6) and 0.225 (6)].
doi:10.1107/S1600536812017849
PMCID: PMC3344653  PMID: 22590415
12.  (2E,4E)-Ethyl 5-(phenyl­sulfon­yl)penta-2,4-dienoate 
In the title compound, C13H14O4S, both C=C double bonds adopt an E conformation. In the crystal, mol­ecules are linked into centrosymmetric R 2 2(14) dimers via pairs of C—H⋯O hydrogen bonds.
doi:10.1107/S1600536812009907
PMCID: PMC3344046  PMID: 22589955
13.  Methyl (E)-2-({2-[(E)-(hy­droxy­imino)­meth­yl]phen­oxy}meth­yl)-3-phenyl­acrylate 
In the title compound, C18H17NO4, the hy­droxy­ethanimine group is essentially coplanar with the ring to which it is attached [C—C—N—O torsion angle = 179.94 (14)°]. The mol­ecules are linked into cyclic centrosymmetric R 2 2(6) dimers via O—H⋯N hydrogen bonds and the crystal packing is further stabilized by C—H⋯O inter­actions.
doi:10.1107/S1600536812002711
PMCID: PMC3295410  PMID: 22412521
14.  (E)-2-({2-[(E)-(Hy­droxy­imino)­meth­yl]phen­oxy}meth­yl)-3-p-tolyl­acrylonitrile 
In the title compound, C18H16N2O2, the hy­droxy­ethanimine group is essentially coplanar with the ring to which it is attached (C—C—N—O torsion angle = −176.9°). Mol­ecules are linked into cyclic centrosymmetric R 2 2(6) dimers via O—H⋯N hydrogen bonds.
doi:10.1107/S160053681200270X
PMCID: PMC3297297  PMID: 22412487
15.  3-[(Z)-Benzyl­idene]-2,3-dihydro-1,5-benzothia­zepin-4(5H)-one 
In the title compound, C16H13NOS, the seven-membered ring adopts a distorted half-chair conformation. In the crystal, mol­ecules are linked by N—H⋯O hydrogen bonds, forming chains running along the b axis. The crystal packing is further stabilized by C—H⋯O inter­actions.
doi:10.1107/S1600536811042991
PMCID: PMC3247452  PMID: 22220070

Results 1-15 (15)