The Structure of Some Salts of 2:6-Dimethyl-gamma-pyrone (2:6-Dimethyl-4H-pyran-4-one).
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چکیده
منابع مشابه
5,6-Dimethyl-4-phenyl-2H-pyran-2-one
In the title compound, C(13)H(12)O(2), the dihedral angle between the pyran-one and phenyl rings is 57.55 (9)°. In the crystal, the mol-ecules are linked by π-π stacking inter-actions between the parallel pyran-one rings of neighboring mol-ecules with distances of 3.5778 (11) Å and 3.3871 (11) Å between the planes. C-H⋯O interactions also occur.
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The mol-ecular structure of the title compound, C(19)H(20)O(2), reveals a slightly distorted chair conformation for the tetra-hydro-pyran ring with the two methyl and two phenyl substituents in equatorial positions.
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In the title compound, C(4)H(8)N(4), inter-molecular N-H⋯N hydrogen bonds involving the amino groups and triazole N atoms form a two-dimensional sheet.
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In the title compound, C19H22N2O5, the six-membered carbocyclic ring of the chromene moiety adopts an envelope conformation with the dimethyl-substituted C atom as the flap. The pyran ring has a flat-boat conformation. The meth-oxy-phenyl ring is orthogonal to the mean plane of the chromene moiety, with a dihedral angle of 89.97 (8)°. The amine N atom deviates from the chromene mean plane by 0....
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In this study, preparation of nano-sized gamma alumina with high specific surface area and high yield by thereaction between aluminum nitrate and sodium carbonate, without using any surfactant is reported. Bohemite (Aluminum oxyhydroxide) was prepared as a precursor by strict control of pH and reaction temperature. The gel produced was purified by washing fol...
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ژورنال
عنوان ژورنال: Acta Chemica Scandinavica
سال: 1960
ISSN: 0904-213X
DOI: 10.3891/acta.chem.scand.14-0765