An improved synthesis and some reactions of diethyl 4-oxo-4H-pyran-2,5-dicarboxylate
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چکیده
منابع مشابه
Diethyl 4-oxo-4H-[1,4′-biquinoline]-3,3′-dicarboxylate
In the title mol-ecule, C24H20N2O5, the quinoline and quinolinone moieties are practically perpendicular to each other, forming a dihedral angle of 89.06 (3)°. In the crystal, each moiety forms coplanar π-stacked couples with the respective inversion equivalents. The quinolinone moieties overlap with their benzene rings with a centroid-centroid separation of 3.641 (2) Å, whereas the quinoline m...
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In the title compound, C24H18Cl2N2O5, the quinoline and quinolinone moieties are nearly perpendicular to each other, forming a dihedral angle of 82.36 (3)°. In the crystal, mol-ecules form a halogen bond between a Cl atom of a quinolinone moiety and the N atom of the quinoline moiety of the inversion equivalent [Cl⋯N = 3.106 (3) Å]. The mol-ecules also form two kinds of C-H⋯O hydrogen-bonded ce...
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A simple, efficient and eco-friendly procedure for the selective monohydrolysis of diethyl 2,6-dimethyl-4-aryl-4H-pyran-3,5-dicarboxylates under quaternary ammonium salt catalysis conditions is presented. The catalytic activities of various quaternary ammonium salts were investigated using different molar ratios of NaOH and water-organic solvent mixtures. The results indicate that the combinati...
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ژورنال
عنوان ژورنال: Tetrahedron Letters
سال: 2013
ISSN: 0040-4039
DOI: 10.1016/j.tetlet.2013.09.100