3-Benzylidene-6-methoxychroman-4-one
نویسندگان
چکیده
In the title compound, C(17)H(14)O(3), the dihedral angle between the phenyl ring and the benzene ring of the chromanone moiety is 67.78 (3)°. The six-membered heterocyclic ring of the chromanone moiety adopts a half-chair conformation. The structure is stabilized by weak inter-molecular C-H⋯O inter-actions that link the mol-ecules into inversion dimers.
منابع مشابه
(Z)-2-{2,4-Dimethoxy-6-[(E)-4-methoxystyryl]benzylidene}quinuclidin-3-one
The crystal structure of the title compound, C(25)H(27)NO(4), shows the presence of a double bond with Z geometry which connects the quinuclidin-3-one ring and the trimeth-oxy-resveratrol moiety. The dihedral angle between the two benzene rings in the stilbene skeleton is 32.80 (8)°.
متن کامل(E)-2-[4-(Trifluoromethyl)benzylidene]-2,3-dihydro-1H-inden-1-one
In the title mol-ecule, C(17)H(11)F(3)O, the indan ring system and the trifluoro-methyl-substituted benzene ring are approximately individually planar and form a dihedral angle of 1.81 (5)° with each other. In the crystal, mol-ecules are linked by pairs of weak bifurcated (C-H)(2)⋯O hydrogen bonds to form centrosymmetric dimers, generating R(2) (1)(6) and R(2) (2)(10) ring motifs. These dimers ...
متن کامل(Z)-2-Amino-5-[2,4-dimethoxy-6-(4-methoxystyryl)benzylidene]-1,3-thiazol-4(5H)-one methanol solvate
In the crystal structure of the title compound, C(21)H(20)N(2)O(4)S·CH(3)OH, mol-ecules are linked into chains by a series of inter-molecular N-H⋯O, N-H⋯N and O-H⋯O hydrogen bonds. The mol-ecular structure shows a double bond with Z geometry, connecting the thia-zolone and resveratrol units. The dihedral angle between the thiazolone ring and the nearest dimethoxy-benzene ring is 53.02 (7)°.
متن کامل4-{(E)-[2-(4-Iodobutoxy)benzylidene]amino}-1,5-dimethyl-2-phenyl-1H-pyrazol-3(2H)-one
The title Schiff base compound, C(22)H(24)IN(3)O(2), adopts an E configuration about the central C=N bond. The pyrazolone ring makes a dihedral angle of 49.68 (10)° with its attached phenyl ring. The phenolate plane makes dihedral angles of 16.78 (9) and 50.54 (9)°, respectively, with the pyrazolone ring and the terminal phenyl ring. An intra-molecular C-H⋯O hydrogen bond generates an S(6) ring...
متن کاملOrthorhombic modification of (E)-4-benzylidene-2-phenyl-1,3-oxazol-5(4H)-one: whole molecule disorder
The title mol-ecule, C(16)H(11)NO(2), is disordered about a pseudo-twofold rotation axis that approximately bis-ects the mol-ecule along the C=O double bond. The two overlapping components are planar [r.m.s. deviation = 0.10 Å in the major 0.537 (4) component and 0.07 Å in the minor component]. The two components are aligned at 1.8 (3)°.
متن کامل