organic compounds
The title compound, C28H22O2, is a intermediate in the synthesis of 10,10′-dibromo-9,9′-bianthracenyl. The molecule forms both intra- and intermolecular O—HO hydrogen bonds.
organic compounds
The asymmetric unit of the title compound, C23H23ClN4OS, contains two crystallographically independent molecules in which the orientations of the propylamine group and chlorophenyl rings with respect to the fused ring system are different. The terminal cyclohexene ring adopts a half-chair conformation. The crystal packing is stabilized by N—HO, N—HN and C—HO hydrogen bonds and π–π interactions.
organic compounds
In the molecule of the title compound, C24H17Cl2N3O2S, the mean plane of the tricyclic thienopyridopyrimidine system is roughly orthogonal to both benzene planes, the dihedral angles being 107.8 (1) and 99.6 (1)° for the benzene planes in the p-chlorophenoxy and p-chlorophenyl groups, respectively. The dihedral angle formed by the two benzene rings is 101.4 (1)°.
organic compounds
In the title compound, C23H26N4OS, the fused tricyclic system is essentially planar. The crystal stacking is mainly due to π–π interactions and intermolecular N—HO hydrogen-bond interactions.
organic compounds
In the structure of the title compound, C27H21Cl2N3O2S·CH2Cl2, the C-S bond lengths in the thiophene ring [1.744 (5) and 1.745 (5) Å] are equivalent and long compared with the values observed in both free thiophene, measured using electron diffraction, and thieno[2,3-c]pyridine. The central thienopyridine ring system is nearly planar and the dihedral angle between the thiophene and pyridine planes is 0.9 (1)°.
organic compounds
The title compound, C26H36O5, is a derivative of abietic acid formed by an endo-Diels-Alder reaction between maleic anhydride and the diene levopimaric acid ethyl ester. The two fused and unbridged cyclohexane rings have chair conformations and the anhydride ring is planar.