(E)-2-(3,4-Dimeth­oxy­benzyl­idene)-5,6-dimeth­oxy-2,3-dihydro-1H-inden-1-one

(E)-5,6-Dimeth­oxy-2-(pyridin-4-yl­methyl­idene)-2,3-dihydro-1H-inden-1-one

The mol-ecule of the title compound, C(17)H(15)NO(3), is slightly twisted, with a dihedral angle of 12.12 (3)° between the dihydro-indenone group and the pyridine ring. In the crystal, mol-ecules are connected into layers parallel to the ab plane via inter-molecular C-H⋯O hydrogen bonds. Weak π-π [centroid-centroid distance = 3.5680 (6) Å] inter-actions are also observed.

(E)-2-(3-Chloro­benzyl­idene)-5,6-dimeth­oxy-2,3-dihydro-1H-inden-1-one

In the title compound, C(18)H(15)ClO(3), the dihydro-indenone group makes a dihedral angle of 8.56 (6)° with the bezene ring. In the crystal, the mol-ecules are inter-connected into a three-dimensional network via inter-molecular C-H⋯O hydrogen bonds. Weak C-H⋯π and π⋯π [centroid-centroid distances 3.6598 (9)-3.6913 (9) Å] inter-actions are also observed.

Molecular structure studies of (1S,2S)-2-benzyl-2,3-dihydro-2-(1H-inden-2-yl)-1H-inden-1-ol

The single enantiomer (1S,2S)-2-benzyl-2,3-dihydro-2-(1H-inden-2-yl)-1H-inden-1-ol (2), has recently been synthesized and isolated from its corresponding diastereoisomer (1). The molecular and crystal structures of this novel compound have been fully analyzed. The relative and absolute configurations have been determined by using a combination of analytical tools including X-ray crystallography...

Synthesis and Biological Evaluation of (5,6-dialkoxy-3-oxo-2,3- Dihydro-1h-inden-1-yl)acetic Acid Esters as Anti-inflammatory Agents with Much Reduced Gastrointestinal Ulcerogenic Potential

(2E)-2-(Furan-2-yl­methyl­idene)-2,3-dihydro-1H-inden-1-one

In the title compound, C(14)H(10)O(2), the five-membered ring of the inden-1-one residue is almost planar (r.m.s. deviation = 0.035 Å). A twist about the single bond linking the two residues is evident [C-C-C-C torsion angle = -13.2 (5)°]. The three-dimensional architecture is stabilized by C-H⋯O (involving the trifurcated carbonyl O atom), C-H⋯π and π-π inter-actions [between the five- and six...