9,10-Dioxo-9,10-dihydroanthracene-1,4-diyl diacetate
نویسندگان
چکیده
In the title compound, C18H12O6, the anthra-quinone ring system is nearly planar [maximum deviation = 0.161 (3) Å] and both acetate groups are located on the same side of the ring plane. A supra-molecular architecture arises in the crystal owing to π-π stacking between parallel benzene rings of adjacent mol-ecules [centroid-centroid distance = 3.883 (4) Å] and weak inter-molecular C-H⋯O hydrogen bonding.
منابع مشابه
OXIDATIVE DEHYDROGENATION OF 1-TETRALONES: SYNTHESIS OF JUGLONE, NAPHTHAZARIN, AND ?-HYDROXYANTHRAQUINONES
Treatment of 5,8-dihydroxy-1-tetralone (9) with either 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) in refluxing benzene or silver (I) oxide in refluxing 1,4-dioxane afforded juglone (5-hydroxy-1,4-naphthoquinone) (1) in good yield. With manganese dioxide in dioxane the tetralone gave a mixture of juglone and naphthazarin (5,8-dihydroxy-1,4-naphthoquinone) (3), the proportion of naphthazarin...
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Aminoanthraquinones were successfully synthesized via two reaction steps. 1,4-Dihydroxyanthraquinone (1) was first subjected to methylation, reduction and acylation to give an excellent yield of anthracene-1,4-dione (3), 1,4-dimethoxyanthracene-9,10-dione (5) and 9,10-dioxo-9,10-dihydroanthracene-1,4-diyl diacetate (7). Treatment of 1, 3, 5 and 7 with BuNH2 in the presence of PhI(OAc)2 as catal...
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The title compound, C(15)H(8)O(5), also known as nordamnacanthal, was isolated from the Malaysian Morinda citrifolia L. The 20 non-H atoms are coplanar. The structure is stabilized by intra-molecular O-H⋯O hydrogen bonds and inter-molecular O-H⋯O and C-H⋯O hydrogen bonds, forming bilayers of mol-ecular tapes with alternating stacking directions along the a axis.
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In the crystal of the title polymeric complex, [Ni(2)(C(18)H(4)O(10))(C(10)H(8)N(2))(H(2)O)(8)](n), each Ni(II) cation is coord-in-ated by four water mol-ecules in the equatorial plane, and is further bridged by an 9,10-dioxo-9,10-dihydro-anthracene-1,4,5,8-tetra-carb-oxy-l-ate anion and a 4,4'-bipyridine ligand in the axial directions, forming a distorted octa-hedral geometry. The 9,10-dioxo-9...
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