2-[(E)-2,5-Dimethoxybenzylidene]indan-1-one
نویسندگان
چکیده
In the title compound, C(18)H(16)O(3), the mean plane of the nine-membered indane system makes a dihedral angle of 3.71 (17)° with the benzene ring of the dimethoxy-phenyl group. The mol-ecular conformation is stabilized by intra-molecular C-H⋯O hydrogen contacts. The crystal structure is stabilized by inter-molecular C-H⋯O inter-actions, which link neighbouring mol-ecules into one-dimensional extended chains along the [100] direction. In the structure, C-H⋯π inter-actions are also observed.
منابع مشابه
7′-(2,5-Dimethoxyphenyl)-1′,3′,5′,6′,7′,7a’-hexahydrodispiro[indan-2,5′-pyrrolo[1,2-c][1,3]thiazole-6′,2′′-indan]-1,3,1′′-trione
In the title compound, C(30)H(25)NO(5)S, all the five-membered rings are in envelope conformations with the spiro and methylene C atoms as the flap atoms. Intra-molecular C-H⋯O inter-actions stabilize the mol-ecular structure and form S(6) and S(7) ring motifs. The mean plane through the hexa-hydro-pyrrolo-[1,2-c]thia-zole ring [r.m.s deviation of 0.0393 (1) Å] makes dihedral angles of 60.92 (5...
متن کامل(E)-4-(2,5-Dimethoxybenzylidene)-2-phenyl-1,3-oxazol-5(4H)-one
The central aza-lactone ring in the title compound, C(18)H(15)NO(4), is planar (r.m.s. deviation 0.05, 0.12 Å) in both independent mol-ecules comprising the asymmetric unit. The benzyl-idene substituent is coplanar with this ring [dihedral angle between the planes = 1.8 (1)° in the first mol-ecule and 2.8 (1)° in the second], as is the phenyl substitutent [dihedral angle between rings = 4.6 (1)...
متن کامل(E)-N′-(2,5-Dimethoxybenzylidene)-3,4-dihydroxybenzohydrazide monohydrate
In the title compound, C(16)H(16)N(2)O(5)·H(2)O, the dihedral angle between the two benzene rings is 25.9 (1)°. Intra-molecular O-H⋯O and N-H⋯O hydrogen bonds are observed. In the crystal, the components are linked into a three-dimensional network by O-H⋯O and O-H⋯(O,O) hydrogen bonds.
متن کاملKinetic resolution of racemic pyrrolidine-2,5-diones using chiral oxazaborolidine catalysts.
Kinetic resolution of racemic C-3 substituted pyrrolidine-2,5-diones has been achieved for the first time using highly efficient oxazaborolidine catalysts derived from cis-1-amino-indan-2-ol.
متن کامل(E)-N′-(2,5-Dimethoxybenzylidene)-2,4-dihydroxybenzohydrazide
In the title compound, C(16)H(16)N(2)O(5), the dihedral angle between the two benzene rings is 4.2 (2)° and an intra-molecular O-H⋯O hydrogen bond generates an S(6) ring. In the crystal, mol-ecules are linked into layers lying parallel to the bc plane by O-H⋯O and N-H⋯O hydrogen bonds.
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