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The title compound, C15H12N4O, was synthesized by a standard Suzuki cross-coupling reaction. The terminal pyrimidine rings are rotated at dihedral angles of 12.06 (4) and −13.13 (4)° with respect to the central benzene ring. In the crystal, the molecules are connected by two kinds of C—H
N hydrogen bonds, forming zigzag chains along the c axis. Weak π–π interactions between the benzene and one of the pyrimidine rings are also found and stack the molecules along the b axis [centroid–centroid distance = 4.112 (3) Å].
N hydrogen bonds, forming zigzag chains along the c axis. Weak π–π interactions between the benzene and one of the pyrimidine rings are also found and stack the molecules along the b axis [centroid–centroid distance = 4.112 (3) Å].organic compoundsOpen access
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In an effort to discover new potential boron-dipyrromethene (BODIPY) dyes, the title compound, C19H17BF2N4O4, was prepared from 2,4-dimethylpyrrole, 3,5-dinitrobenzaldehyde and boron trifluoride in a one-pot reaction. The BODIPY fragment is nearly planar, with a maximum deviation from the least-squares plane of 0.251 (2) Å, and the benzene ring is inclined at a dihedral angle of 86.8 (6)° to the BODIPY mean plane. In the crystal, pairs of C—HF hydrogen bonds connect neighbouring molecules into inversion dimers, which are linked by further strong C—HF interactions, forming a supramolecular layered array parallel to the bc plane.
F hydrogen bonds connect neighbouring molecules into inversion dimers, which are linked by further strong C—HF interactions, forming a supramolecular layered array parallel to the bc plane.organic compoundsOpen access
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The title compound, C12H12BrNO4S2, was obtained by the Sandmeyer reaction from ethyl 3-amino-4-cyano-5-[(2-ethoxy-2-oxoethyl)sulfanyl]thiophene-2-carboxylate. The dihedral angle between the thiophene ring and linked CO2 ester group is 2.0 (5)°.
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In the title compound, C27H27NO5 (systematic name: 17-cyclopropylmethyl-14-hydroxy-6-oxo-4,5-epoxymorphinan-6-yl benzoate), which is the benzoate ester of the opioid receptor antagonist naltrexone, the dihedral angle between the two phenyl rings is 77.1 (1)°. In the crystal, a weak aromatic C—HOcarboxyl hydrogen bond involving the benzoate groups of adjacent molecules gives rise to a chain extending along the a-axis direction. The known absolute configuration for the molecule was inferred from a previous naltrexone structure.
Ocarboxyl hydrogen bond involving the benzoate groups of adjacent molecules gives rise to a chain extending along the a-axis direction. The known absolute configuration for the molecule was inferred from a previous naltrexone structure.organic compoundsOpen access
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In the title molecule, C15H21NO5, the dihedral angle between the mean plane of the –N—C(=O)—O– group [maximum deviation = 0.002 (1) Å for the C atom] and the benzene ring is 82.2 (2)°. In the crystal, O—HO and N—HO hydrogen bonds connect the molecules, forming a two-dimensional network parallel to (001).
O and N—HO hydrogen bonds connect the molecules, forming a two-dimensional network parallel to (001).
