(E)-2-(4-Fluorobenzylidene)cyclooctanone
نویسندگان
چکیده
The title compound, C(15)H(17)FO, was prepared directly from the aldol condensation of cyclo-octa-none with 4-fluoro-benz-aldehyde, catalysed by Pd(Ni,Ce) in the presence of trimethyl-silyl chloride. The eight-membered ring adopts a boat-chair conformation.
منابع مشابه
(E)-3-(4-Cyclohexyl-3-fluorobenzylidene)chroman-4-one
The title compound, C(22)H(21)FO(2), exhibits substitutional disorder of the F atom and a H atom in the asymmetric unit with different occupancies, the refined F:H ratio being 0.80 (2):0.20 (2). The dihedral angle between the fluorinated benzene ring and the benzene ring of the chromanone system is 37.30°. There are two relatively high residual electron-density peaks associated with the disorder.
متن کامل3-Ethyl-4-[(E)-(4-fluorobenzylidene)amino]-1H-1,2,4-triazole-5(4H)-thione
In the title compound, C(11)H(11)FN(4)S, the dihedral angle between the 1,2,4-triazole ring and the benzene ring is 25.04 (12)° and an intra-moleuclar C-H⋯S inter-action leads to an S(6) ring. In the crystal, inversion dimers linked by pairs of N-H⋯S hydrogen bonds generate R(2) (2)(8) loops.
متن کامل(E)-N′-(3-Fluorobenzylidene)-4-methylbenzohydrazide
In the title compound, C(15)H(13)FN(2)O, the dihedral angle between the benzene rings is 16.9 (2)°. The F atom and the O atom are in a syn conformation. In the crystal, mol-ecules are linked by N-H⋯O hydrogen bonds to generate C(4) chains propagating along the b-axis direction.
متن کامل5-(2-Fluorobenzylidene)-2,2-dimethyl-1,3-dioxane-4,6-dione
The title compound, C(13)H(11)FO(4), was prepared by the reaction of 2,2-dimethyl-1,3-dioxane-4,6-dione and 2-fluoro-benzaldehyde in ethanol. In the crystal structure, mol-ecules are linked into chains by weak inter-molecular C-H⋯O hydrogen bonds.
متن کاملN-[(E)-4-Fluorobenzylidene]-3,4-dimethylaniline
In the title Schiff base, C(15)H(14)FN, the N=C bond length of 1.263 (2) Å is shorter than the N-C bond [1.426 (2) Å], indicating a typical imine double bond. Moreover, the C-N-C angle is 118.5 (2)°. The benzene rings form a dihedral angle of 51.22 (5)°.
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