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organic compounds
(6R,7aS)-1,3,5,6,7,7a-Hexahydro-3-(2-hydroxyphenyl)-1,1-diphenylpyrrolo[1,2-c][1,3]oxazol-6-ol
The molecule of the title compound, C24H23NO3, consists of five rings, of which the pyrrole ring and oxazole ring are not planar. The compound was designed as a catalyst of the asymmetric Baylis–Hillman reaction, but it only has poor catalysis activity. According to the crystal structure analysis, this might be caused by steric hindrance due to the intramolecular O—H
N hydrogen bond. In the crystal structure, the molecules are connected by O—HO and C—HO hydrogen bonds, forming chains along [010]. The chains further interact through C—HO hydrogen bonds, stacking along [100]. In the third direction [001], there is only weak interaction, which explains the crystal habit of a thin plate.
N hydrogen bond. In the crystal structure, the molecules are connected by O—HO and C—HO hydrogen bonds, forming chains along [010]. The chains further interact through C—HO hydrogen bonds, stacking along [100]. In the third direction [001], there is only weak interaction, which explains the crystal habit of a thin plate. organic compounds
The title compound, C33H32ClNO4, prepared by methylation of 12-chloro-2,10-dibenzyloxy-9-hydroxy-3-methoxytetrahydroprotoberberine with diazomethane, contains a fused four-ring system in which the trans-fused rings both have half-chair conformations. No significant intermolecular interactions are observed in the structure.
metal-organic compounds
In the title compound, [Ni(C14H10N2O3)(C5H5N)3]·1.5C5H5N, the NiII ion is coordinated by one N and two O atoms from a Schiff base ligand and by the N atoms of three pyridine molecules to form a distorted octahedral geometry.
