Complexation properties and synthesis of a novel Schiff base with triphenylene nucleus

Koçyiğit, Özcan; Kurşunlu, Ahmed Nuri; Güler, Ersın

doi:10.1016/j.jhazmat.2010.07.029

Cited by 27 publications

(17 citation statements)

References 34 publications

(29 reference statements)

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“…Schiff bases [1][2][3][4][5][6][7] and their metal complexes represent one of the most areas of material science, catalysis and chemical research [8][9][10][11][12][13][14][15][16][17][18][19][20][21] . The efficiency of these compounds often enhanced upon coordination to a metal has been proven for the drug action acceleration of therapeutic agents [22][23][24][25][26] and for multi-compounds reaction where these complexes are used as intermediates.…”

Section: Introductionmentioning

confidence: 99%

New Cerium (III) Complex of Schiff Base (E)-N-Benzylidene-4-Methoxyaniline: Synthesis and Density Functional Theoretical Study of Vibrational Spectra

Imanelakehal¹,

Farhihalamia²,

Saoussenlakehal³

et al. 2016

Orient. J. Chem

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Complex of cerium (III) with (E)-N-benzylidene-4-methoxyaniline is synthesized through a one-pot three-component reaction from aromatic aldehyde, aromatic amine and the CeCl 3 · 7 H 2 O, as an efficient catalyst. This cerium (III) complex is characterized by IR, 1H, and 13C NMRspectroscopy and mass-spectral data. Molecular structure, Mullikan charges, thermodynamic parameters; vibrational frequencies and intensities were calculated by Density Functional theory methods (B3LYP, B3PW91, mPW1PW91 and PBEPBE) using the SDD basis set. The comparison between the calculated and experimental data in order to attain the best quality and to predict the structure, the best performance in the vibration spectra perfected of the title compound, we have found that the harmonic vibration computed are in a good agreement with the observed in IR spectrum, for closest match we calculated optimal scaling factors can recommend for the IR spectral future predictions for unknown compounds of this class. In order to better comparison, we also root mean square values of the experimental and calculated IR bands are 16.64, 16.64, 17.45, 17.66 and the mean absolute percentage error values are 1.33, 1.39, 1.40, and 1.5 for B3LYP, B3PW91, mPW1PW91, and PBEPBE methods respectively.

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Section: Introductionmentioning

confidence: 99%

New Cerium (III) Complex of Schiff Base (E)-N-Benzylidene-4-Methoxyaniline: Synthesis and Density Functional Theoretical Study of Vibrational Spectra

Imanelakehal¹,

Farhihalamia²,

Saoussenlakehal³

et al. 2016

Orient. J. Chem

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show abstract

“…In other words, this substance is used in the synthesis tazobactam suggesting that it is an unreacted product that failed to perform a perfect tazobactam synthetic reaction. On the other hand, the synthetic method for the brand tazobactam is different and impurity A (mutagenic substance) including the organic azide group is not used in the synthetic process [10,11]. Since the international patent for the synthetic method used to produce the brand drug has not expired, companies producing generic Piperacillin/Tazobactam products are considered to have no alternative but to use the synthetic method using this mutagenic substance A.…”

Section: Discussionmentioning

confidence: 99%

In silico Evaluation of Impurities Found in Some Generic Drugs of Piperacillin/ Tazobactam

Fujimura¹,

Sato²,

Watanabe³

2017

J Antimicrob Agents

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Characterization of impurities present in generic antimicrobial agents is not required according to the approval criteria for their sale worldwide. To assess the safety of generics, we conducted a structural estimation of impurities in six piperacillin/tazobactam generics and carried out an in silico analysis. Namely, these generics were compared with the brand name drug by HPLC and LC-MS. The mutagen that in silico analysis showed alert was detected in five of six generic products. It was estimated that this mutagen was an azido group of the precursor used in the synthesis process of tazobactam whose patent has expired. With regards to this mutagenic substance, pharmaceutical companies marketing a generic Piperacillin/Tazobactam product will have to check presence or absence of this mutagen before introducing the product to the market.

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“…They show interesting properties, e.g., their ability to reversibly bind oxygen, catalytic activity in hydrogenation of olefins, transfer of an amino group, photochromic properties and complexing ability towards toxic metals [1]. In this paper, the title new Schiff base compound derived from the condensation of 2-chlorobenzaldehyde with 5-bromopyridine-3,4-diamine is reported.…”

Section: Discussionmentioning

confidence: 99%

Crystal structure of trans-N3-(2-chlorobenzylidene)-5-bromopyridine-3,4- diamine, C12H9BrClN3

Cai

al.²

2012

Zeitschrift für Kristallographie - New Crystal Structures

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Complexation properties and synthesis of a novel Schiff base with triphenylene nucleus

Cited by 27 publications

References 34 publications

New Cerium (III) Complex of Schiff Base (E)-N-Benzylidene-4-Methoxyaniline: Synthesis and Density Functional Theoretical Study of Vibrational Spectra

New Cerium (III) Complex of Schiff Base (E)-N-Benzylidene-4-Methoxyaniline: Synthesis and Density Functional Theoretical Study of Vibrational Spectra

In silico Evaluation of Impurities Found in Some Generic Drugs of Piperacillin/ Tazobactam

Crystal structure of trans-N3-(2-chlorobenzylidene)-5-bromopyridine-3,4- diamine, C12H9BrClN3

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