Ethyl 1,5-diphenyl-1H-pyrazole-4-carboxylate
نویسندگان
چکیده
The asymmetric unit of the title compound, C(18)H(16)N(2)O(2), contains two independent mol-ecules (A and B). In mol-ecule A, the pyrazole ring is inclined at angles of 48.86 (6) and 60.80 (6)° with respect to the two phenyl rings; the corresponding angles for mol-ecule B are 46.86 (6) and 58.63 (6)°. In the crystal, mol-ecules of type A are linked into sheets parallel to (001) via weak C-H⋯O hydrogen bonds, whereas the mol-ecules of type B are linked into chains along [010] via weak C-H⋯O hydrogen bonds.
منابع مشابه
Antioxidant and Antimicrobial Activity of 5-methyl-2-(5-methyl-1,3-diphenyl-1H-pyrazole-4-carbonyl)-2,4-dihydro-pyrazol-3-one
Cycloaddition of nitrile imines 4 generated in situ by the catalytic dehydrogenation of diphenyl hydrazones 3 using Chloramine-T (CAT) as oxidant in glacial acetic acid with enolic form of ethyl acetoacetate 5 afforded Ethyl 3-aryl-5-methyl-1-phenyl-1H-pyrazol-4-carboxylate 6 in 80% yield. The said pyrazoles 6 refluxed with 80% hydrazine hydrate using absolute alcohol as solvent for about 2-3 h...
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