(E)-2-Methoxy-4-(3-oxobut-1-enyl)phenyl acetate
نویسندگان
چکیده
The title compound, C(13)H(14)O(4), belongs to the class of α,β-unsaturated ketones, which have potential bactericidal, fungicidal, anti-tumor and anti-inflammatory properties. The C atoms and attached H atoms of the ethenyl part of the title mol-ecule are disordered over two orientations with refined occupancies of 0.583 (7) and 0.417 (3). Mol-ecules are connected by two inter-molecular C-H⋯O inter-actions, forming a dimer with symmetry.
منابع مشابه
Crystal structure of ethyl (E)-4-(4-chlorophenyl)-4-methoxy-2-oxobut-3-enoate
In the title compound, C13H13ClO4, the dihedral angle between the chloro-benezene ring and the least-squares plane through the 4-meth-oxy-2-oxobut-3-enoate ethyl ester residue (r.m.s. deviation = 0.0975 Å) is 54.10 (5)°. In the crystal, mol-ecules are connected by meth-oxy-ketone and benzene-carboxyl-ate carbonyl C-H⋯O inter-actions, generating a supra-molecular layer in the ac plane.
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The title compound, C(21)H(18)O(7), is an important inter-mediate in the synthesis of 3-(4-hydroxy-phen-yl)-4-methyl-6-meth-oxy-7-hydroxy-coumarin, which is a nonsteroidal analogue of 2-methoxy-estradiol (2-ME). The substituent benzene ring is not in the same plane as the coumarin ring system, with a dihedral angle of 66.88 (10)°. There are some weak inter-molecular C-H⋯O inter-actions. One car...
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The title compound, C21H22O4, also known as cajanine, features an intra-molecular O-H⋯O hydrogen bond between the adjacent carb-oxy and hy-droxy groups. The benzene rings make an inter-planar angle of 175.4 (2)°. In the crystal, mol-ecules are linked by pairs of O-H⋯O hydrogen bonds, forming inversion dimers.
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In the title compound, C(23)H(26)Cl(2)N(4)O(4),the dihedral angle between the mean planes of the pyridine and 3-chloro-phenyl rings is 22.63 (2)°. The nitro group is in a Z conformation.
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