منابع مشابه
Cinnamyl 2-oxo-2H-chromene-3-carboxylate
The title compound, C(19)H(14)O(4), was prepared by the reaction of 2-oxo-2H-chromene-3-acyl chloride with cinnamic alcohol. The whole mol-ecule is not planar, the dihedral angle between the planes of coumarin and benzene rings being 13.94 (4)°, but the plane of the coumarin ring and that of the ester group are almost coplanar, making a dihedral angle of 2.9 (1)°. In the crystal structure, weak...
متن کاملCinnamyl 8-methoxy-2-oxo-2H-chromene-3-carboxylate
In the crystal structure of the title compound, C(20)H(16)O(5), the mol-ecule assumes an E configuration with the benzene ring and chromenecarboxyl group located on opposite ends of the C=C double bond. The chromene ring system and benzene ring are oriented at a dihedral angle of 74.66 (12)°. Weak inter-molecular C-H⋯O hydrogen bonding is present in the crystal structure.
متن کاملMenthyl 2-oxo-2H-chromene-3-carboxylate
The title compound, C(20)H(24)O(4), was synthesized from the reaction of 2-oxo-2H-chromene-3-acyl chloride and menthol. The mean plane of the ester group and that of the four essentially planar (maximum deviation 0.0112 Å) C atoms of the chair-form cyclo-hexyl ring form dihedral angles of 43.8 (3) ° and 81.8 (1)°, respectively, with the mean plane of the coumarin ring system. In the crystal str...
متن کاملMethyl 2-oxo-2H-chromene-3-carboxylate
The title compound, C(11)H(8)O(4), features an almost planar mol-ecule (r.m.s. deviation = 0.033 Å for all non-H atoms). In the crystal, the mol-ecules are linked via C-H⋯O hydrogen bonds, forming two-dimensional networks lying parallel to (1-21).
متن کاملThe reaction of ethyl 2-oxo-2H-chromene-3-carboxylate with hydrazine hydrate.
Although salicylaldehyde azine (3) was reported in 1985 as the single product of the reaction of ethyl 2-oxo-2H-chromene-3-carboxylate (1) with hydrazine hydrate, we identified another main reaction product, besides 3, which was identified as malono-hydrazide (4). In the last two decades, however, some articles have claimed that this reaction afforded exclusively hydrazide 2 and they have repo...
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ژورنال
عنوان ژورنال: Acta Crystallographica Section E Structure Reports Online
سال: 2009
ISSN: 1600-5368
DOI: 10.1107/s1600536809045644