منابع مشابه
Synthesis of quinoxaline 1,4-di-N-oxide analogues and crystal structure of 2-carbomethoxy-3-hydroxyquinoxaline-di-N-oxide.
A series of quinoxaline 1,4-di-N-oxide analogues were prepared from benzofurazan N-oxide derivatives and β-diketone ester compounds by the improved Beirut reaction. The structures of the target products were characterized by NMR, MS, IR and elemental analysis measurements, and that of 2-carbomethoxy-3-hydroxyquinoxaline- di-N-oxide was further confirmed by single-crystal X-ray diffraction. Its ...
متن کاملSynthesis, Characterization and Antibacterial Activity Studies of Some N-Acyl-N'-aryl Thiourea Derivatives
Some N¬-acyl-N'-aryl thiourea derivatives 4(a-f) have been prepared by the reaction of acyl halides ammonium thiocyanate and aryl amines. The structures of synthesized compounds have been characterized by IR, 1HNMR spectral studies. The synthesized compounds 5(a-f) have been screened for antibacterial activity. The effect of the structure of the investigated compounds on the antibacterial activ...
متن کاملSynthesis and antiviral activities of N-mono- and/or N,N'-di-carbamoyl and acyl derivatives of symmetrical diamines.
N-carbamoyl and N-acyl diamine derivatives were synthesized from symmetrical diamines by their addition to iso(thio)cyanates, cleavage reaction of acid anhydride, or N-acylation by acyl chloride. (1R,2R)-1,2-Diaminocyclohexane [(1R,2R)-1], meso-1,2-diaminocyclohexane (meso-1), (1R,2R)-1,2-diphenylethylenediamine [(1R,2R)-3], or meso-1,2-diphenylethylenediamine (meso-3) were used as the starting...
متن کامل5,5′-Diethyl-2,2′-(triazene-1,3-diyl)di-1,3,4-thiadiazole
In the mol-ecule of the title compound, C(8)H(11)N(7)S(2), the conformation about the N=N bond is trans and the thia-diazole rings are oriented at a dihedral angle of 2.92 (3)°. In the crystal structure, inter-molecular N-H⋯S hydrogen bonds link the mol-ecules into chains. There are π-π contacts between the thia-diazole rings [centroid-to-centroid distances = 3.699 (3) and 3.720 (2) Å].
متن کاملA QSAR Study of 2-carboxamide-1,4-di-N-oxide quinoxaline Derivatives
A set of density functional theory (DFT) calculations were performed on 2-carboxamide-1,4- di-N-oxide quinoxaline (2CdNOQ) derivatives. The optimized structure of these compounds in three forms was obtained. Some electronic parameters including dipole moment (μ),ionization potential (I), electron af finity (A), LUMO energy (εLUMO), HOMO energy (εHOMO),electronegativity (χ), hardness (η), ele...
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ژورنال
عنوان ژورنال: Nigerian Journal of Chemical Research
سال: 2007
ISSN: 1119-0221
DOI: 10.4314/njcr.v11i1.35627