Effect of substituents on the 13C chemical shifts of the azomethine carbon atom of N-(substituted phenylmethylene)-3- and -4-aminobenzoic acids

Jovanović, Bratislav Ž.; Marinković, Aleksandar D.; Assaleh, Fathi H.; Csanádi, János

doi:10.1016/j.molstruc.2004.12.028

Cited by 7 publications

(8 citation statements)

References 15 publications

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“…10 As an example: 1.37 g (0.01 mol) p-aminobenzoic acid and 1.06 g (0.01 mol) benzaldehyde were refluxed in 10 ml absolute ethanol for two hours. 10 As an example: 1.37 g (0.01 mol) p-aminobenzoic acid and 1.06 g (0.01 mol) benzaldehyde were refluxed in 10 ml absolute ethanol for two hours.…”

Section: Methodsmentioning

confidence: 99%

Substituent and structural effects on the kinetics of the reaction of N-(substituted phenylmethylene)-m- and -p-aminobenzoic acids with diazodiphenylmethane

Jovanović¹,

Marinković²,

Vitnik³

et al. 2007

JSCS

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The rate constants for the reaction of twenty-two N-(substituted phenylmethylene)-m-and -p-aminobenzoic acids with diazodiphenylmethane were determined in absolute ethanol at 30 °C. The effects of substituents on the reactivity of the investigated compounds were interpreted by correlation of the rate constants with LFER equations. The results of quantum mechanical calculations of the molecular structure together with experimental results gave a better insight into the effects of structure on the transmission of electronic effects of the substituents. New σ constants for substituted benzylideneamino group were calculated.

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Section: Methodsmentioning

confidence: 99%

Substituent and structural effects on the kinetics of the reaction of N-(substituted phenylmethylene)-m- and -p-aminobenzoic acids with diazodiphenylmethane

Jovanović¹,

Marinković²,

Vitnik³

et al. 2007

JSCS

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“…These values have been correlated with Hammett substituent constants and F and R parameters using single and multi-linear regression analyses [54][55][56] . Hammett equation employed, for the correlation analysis, involving the absorption maxima is as shown below in equation (1).…”

Section: Uv-vis Spectral Studymentioning

confidence: 99%

“…) are correlated with various Hammett substituent constants [54][55][56] and F and R parameters through single and multi-regression analyses including Swain-Lupoton's parameters [57]. The results of statistical analysis of single parameter correlation are shown in Table-2.…”

Section: Uv-vis Spectral Studymentioning

confidence: 99%

“…The assigned proton chemical shifts (ppm) of imines have been correlatedwith various Hammett sigma constants [54][55][56] , F and R parameters. The results of statistical analysis are presented in Table-2. From Table- , σ R and F & R parameters.…”

Section: H Nmr Spectral Studymentioning

confidence: 99%

“…The observed chemical shifts δC=N (ppm) values have been correlated [54][55][56] with Hammett constants and F and R parameter the results of statistical analysis are presented in Table-2. From Table-2, it is evident that the δC=N chemical shifts (ppm) have shown satisfactory correlation with Hammett constants σ + and σ I .…”

Section: Nmr Spectramentioning

confidence: 99%

See 2 more Smart Citations

Microwave Assisted Synthesis, Spectral Correlation and Antimicrobial Evaluation of Some Aryl Imines

Sakthinathan¹,

Suresh²,

Kamalakkannan³

et al. 2018

J. Chil. Chem. Soc.

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A series of aryl imines have been synthesized by SiO 2 -H 3 PO 4 catalyzed microwave assisted condensation of amine and aldehyde under solvent-free conditions. The yield of the imines has been found to be more than 80%. The purity of all imines has been checked using their physical constants and spectral data as published earlier in literature. The UV λ max (nm), infrared νC=N(cm -1 ), NMR δ(ppm) of C-H and C=N spectral data have been correlated with Hammett substituent constants and F and R parameters using single and multi-linear regression analysis. From the results of statistical analysis, the effect of substituents on the above spectral data has been studied. The antimicrobial activities of all imines have been studied using Bauer-Kirby method.

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Linear free energy relationships applied to the reactivity and the 13C NMR chemical shifts in 4-[[(substituted phenyl)imino]methyl]benzoic acids

Marinković

Jovanović

Assaleh

et al. 2012

Journal of Molecular Structure

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Effect of substituents on the 13C chemical shifts of the azomethine carbon atom of N-(substituted phenylmethylene)-3- and -4-aminobenzoic acids

Cited by 7 publications

References 15 publications

Substituent and structural effects on the kinetics of the reaction of N-(substituted phenylmethylene)-m- and -p-aminobenzoic acids with diazodiphenylmethane

Substituent and structural effects on the kinetics of the reaction of N-(substituted phenylmethylene)-m- and -p-aminobenzoic acids with diazodiphenylmethane

Microwave Assisted Synthesis, Spectral Correlation and Antimicrobial Evaluation of Some Aryl Imines

Linear free energy relationships applied to the reactivity and the 13C NMR chemical shifts in 4-[[(substituted phenyl)imino]methyl]benzoic acids

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