NMR Spectral Parameters of Seven Di-substituted Anilines.
نویسندگان
چکیده
منابع مشابه
Comparison of quantum chemical parameters and Hammett constants in correlating pK(a) values of substituted anilines.
Historically, Hammett constants have been extremely effective in describing the influence of substituents on chemical reactivity and other physical and chemical properties, whereas variables derived from quantum chemical calculations have generally been less effective. Taking the experimental pK(a)s of substituted anilines as a representative physicochemical property, five ab initio quantum che...
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Several diand tri-substituted amides of the general formula, 2,6-X2C6H3NHCOCH3−iXi and 2,4,6-X3C6H2NHCOCH3−iXi (X = Cl or CH3 and i = 0, 1, 2, or 3) are prepared, characterised, and their infrared spectra in the solid state and 1H and 13C NMR spectra in solution are studied. The C=O stretching vibrations of N-(2,6-dichlorophenyl)and N-(2,6-dimethylphenyl)-amides appear as strong absorptions in ...
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Aprotic diazotization of anthranilic acid with isoamylnitrite or amylnitrite gave benzenediazonium-2- carboxylate. Subsequent thermal decomposition of this diazonium salt (in situ) in 1,2-dichloroethane as a solvent at 85OC and in the presence of 2,5-diethyl-3,4-diphenylcyclopentadienonaes a trapping agent gave 1,4-diethyl-2, 3-diphenylnaphthalene in high yield, after loss of carbon monoxid...
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A procedure for chromatographic separation of 3and 4-substituted anilines on thin layers of silica gel in various systems has been developed with purpose of their identification and control of their purity. The chro matographic values Ям both from adsorption and partition chromatogra phies were correlated with physicochemical parameters pÄľa, er, and к. The relationship between RM from partit...
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ژورنال
عنوان ژورنال: Acta Chemica Scandinavica
سال: 1971
ISSN: 0904-213X
DOI: 10.3891/acta.chem.scand.25-1871