Reactive intermediates in the photochemistry of 4-diazo-2-pyrazolin-5-ones
نویسندگان
چکیده
منابع مشابه
4-(4-Bromophenylhydrazono)-1-(5-bromopyrimidin-2-yl)-3-methyl-2-pyrazolin-5-one
The asymmetric unit of the title compound, C(14)H(10)Br(2)N(6)O, contains two crystallographically independent mol-ecules. The pyrazole ring of one mol-ecule makes dihedral angles of 22.0 (3) and 3.5 (3)° with the pyrimidine and benzene rings, respectively; the corresponding values in the other mol-ecule are 9.2 (3) and 2.1 (3)°, respectively. The mol-ecules are linked by N-H⋯O, C-H⋯N and C-H⋯B...
متن کامل1-[5-(2H-1,3-Benzodioxol-5-yl)-3-(4-methylphenyl)-2-pyrazolin-1-yl]ethanone
In the title compound, C19H18N2O3, the pyrazoline ring is close to being planar (r.m.s. deviation = 0.035 Å) and subtends dihedral angles of 2.11 (8) and 82.63 (8)° with the p-tolyl and benzene rings, respectively. In the crystal, C-H⋯O and C-H⋯N hydrogen bonds link the mol-ecules, forming a three-dimensional network. A weak C-H⋯π inter-action involving the benzene ring is also observed.
متن کامل4-[1-Acetyl-3-(4-methoxyphenyl)-2-pyrazolin-5-yl]phenol
In the title compound, C(18)H(18)N(2)O(3), the dihedral angle formed by the benzene rings is 71.75 (4)°. In the crystal structure, centrosymmetrically related mol-ecules are linked into dimers by inter-molecular O-H⋯O hydrogen bonds and π-π stacking inter-actions with centroid-centroid distances of 3.5511 (6) Å.
متن کاملDesign, synthesis and the biological evaluation of new 1,3-thiazolidine-4-ones based on the 4-amino-2,3-dimethyl-1-phenyl-3-pyrazolin-5-one scaffold.
New thiazolidine-4-one derivatives based on the 4-aminophenazone (4-amino-2,3-dimethyl-1-phenyl-3-pyrazolin-5-one) scaffold have been synthesized as potential anti-inflammatory drugs. The pyrazoline derivatives are known especially for their antipyretic, analgesic and anti-inflammatory effects, but recently there were synthesized new compounds with important antioxidant, antiproliferative, anti...
متن کاملSynthesis and antimicrobial activity of some 1-(2,4-dinitrophenyl)-3-(3-nitrophenyl)-5-(4-substituted phenyl)-4-bromo-2-pyrazolines and 1-(2,4-dinitrophenyl)-3-(3-nitrophenyl)-5-(4-substituted phenyl)-2-pyrazolin-4-ones.
A series of 1-(2,4-dinitrophenyl)-3-(3-nitrophenyl)-5-(4-substituted phenyl)-2-pyrazolin-4-ones (4a-e) have been synthesized by the oxidation of 1-(2,4-dinitrophenyl)-3-(3-nitrophenyl)-5-(4-substituted phenyl)-4-bromo-2-pyrazolines (3a-e) with dimethylsulfoxide. The structure has been established on the basis of spectral data (IR,1H NMR). The synthesized compounds have been screened in vitro fo...
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ژورنال
عنوان ژورنال: Canadian Journal of Chemistry
سال: 1984
ISSN: 0008-4042,1480-3291
DOI: 10.1139/v84-423