5-Methoxymethyl-4-phenoxy-1H-pyrazol-3-ol
نویسندگان
چکیده
In the title compound, C(11)H(12)N(2)O(3), the pyrazole ring system is essentially planar [maximum deviation = 0.002 (2) Å] and forms a dihedral angle of 66.93 (9)° with the benzene ring. In the crystal packing, pairs of inter-molecular N-H⋯O and O-H⋯N hydrogen bonds connect neighbouring mol-ecules into dimers, generating R(2) (2)(10) and R(2) (2)(8) ring motifs, respectively. The crystal structure is further stabilized by C-H⋯π inter-actions.
منابع مشابه
3-Ethyl-4-phenoxy-1-(2,2,2-trifluoroethyl)-1H-pyrazol-5-ol
The title compound, C(13)H(13)F(3)N(2)O(2), crystallizes with two independent mol-ecules in the asymmetric unit, with different conformations of their ethyl side chains. The dihedral angles formed between the 1H-pyrazole and benzene rings in the two mol-ecules are 79.44 (6) and 77.81 (6)°. In the crystal, mol-ecules are linked by O⋯H-N hydrogen bonds into chains propagating along [001] and the ...
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In the title compound C27H22Cl2N4O2, the pyrazol-5-ol ring makes a dihedral angle of 34.80 (11)° with the phenyl ring to which it is bound, while the pyrazolone ring is inclined at 34.34 (12)° to its attached phenyl ring. In the crystal, N-H⋯O and C-H⋯Cl hydrogen bonds link the mol-ecules into chains along [010]. Inter-molecular π-π inter-actions are observed between the pyrazolone ring and the...
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Nanomagnetite-Fe3O4 is used as a highly efficient, mild, green and recyclable nanomagnetite catalyst for the synthesis of 4,4´-(arylmethylene)-bis(3-methyl-1-phenyl-1H-pyrazol-5-ol) derivatives in solvent-free conditions. The condensation reaction of 3-methyl-1-phenyl-1H-pyrazol-5(4H)-one with aromatic aldehydes affords the title compounds in high yields and short reaction times. The nanocataly...
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Nanomagnetite-Fe3O4 is used as a highly efficient, mild, green and recyclable nanomagnetite catalyst for the synthesis of 4,4´-(arylmethylene)-bis(3-methyl-1-phenyl-1H-pyrazol-5-ol) derivatives in solvent-free conditions. The condensation reaction of 3-methyl-1-phenyl-1H-pyrazol-5(4H)-one with aromatic aldehydes affords the title compounds in high yields and short reaction times. The nanocataly...
متن کاملOn the Tautomerism of N-Substituted Pyrazolones: 1,2-Dihydro-3H-pyrazol-3-ones versus 1H-Pyrazol-3-ols.
The tautomerism of 1-phenyl-1,2-dihydro-3H-pyrazol-3-One was investigated. An X-ray crystal structure analysis exhibits dimers of 1-phenyl-1H-pyrazol-3-ol units. Comparison of NMR (nuclear magnetic resonance) spectra in liquid state (¹H, 13C, 15N) with those of "fixed" derivatives, as well as with the corresponding solid state NMR spectra reveal this compound to exist predominantly as 1H-pyrazo...
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عنوان ژورنال:
دوره 65 شماره
صفحات -
تاریخ انتشار 2009