3-[(E)-1-(Benzyloxyimino)ethyl]-2-oxo-2H-chromen-7-yl acetate
نویسندگان
چکیده
منابع مشابه
3-[(E)-1-(Benzyloxyimino)ethyl]-2-oxo-2H-chromen-7-yl acetate
The title compound, C(20)H(17)NO(5), was prepared by the reaction of 3-acetyl-2-oxo-2H-chromen-7-yl acetate with benzyl-oxy-amine. The mol-ecule adopts an E configuration with respect to the C=N double bond. The dihedral angles between the coumarin ring system, the phenyl ring and the C=N-O-C plane of the oxime unit are 35.83 (6), 35.8 (2) and 69.99 (15)°, respectively. In the crystal, a two-di...
متن کاملDimethylammonium 2-[(2-oxo-2H-chromen-7-yl)oxy]acetate
In the title salt, C(2)H(8)N(+)·C(11)H(7)O(5) (-), the acetate group is twisted out of the plane of the coumarin ring system with a C-O-C-C torsion angle of 76.3 (2)°. In the crystal, N-H⋯O hydrogen bonds link the cations and anions into chains propagating in [100].
متن کاملEthyl 2-[(2-oxo-2H-chromen-7-yl)oxy]acetate
In the title compound, C13H12O5, the mean plane of the 2H-chromene ring system (r.m.s deviation = 0.026 Å) forms a dihedral angle of 81.71 (6)° with the mean plane of ethyl 2-hy-droxy-acetate moiety (r.m.s deviation = 0.034 Å). In the crystal, C-H⋯O hydrogen bonds result in the formation of zigzag layers parallel to the bc plane.
متن کامل4-(7-Acetoxy-6-methoxy-4-methyl-2-oxo-2H-chromen-3-yl)phenyl acetate
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...
متن کامل2-Cyano-N′-[(E)-1-(2-oxo-2H-chromen-3-yl)ethylidene]acetohydrazide
In the title compound, C(14)H(11)N(3)O(3), the chromene ring is almost planar, with a maximum deviation of 0.065 (2) Å from the mean plane for one of the C atoms. In the crystal, inversion dimers linked by pairs of N-H⋯O hydrogen bonds generate R(2) (2)(8) loops. The dimers are linked by C-H⋯N and C-H⋯O inter-actions into a three-dimensional network. An aromatic π-π stacking inter-action, with ...
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ژورنال
عنوان ژورنال: Acta Crystallographica Section E Structure Reports Online
سال: 2010
ISSN: 1600-5368
DOI: 10.1107/s1600536810003454