Synthesis of long-chain Schiff bases containing ether and ester moieties by condensation of octadecylamine with vanillin, vanillal, and esters derived therefrom

Дикусар, Е. А.; Поткин, В. И.; Козлов, Н. Г.; Yuvchenko, A. P.

doi:10.1134/s1070363206090143

Cited by 8 publications

(6 citation statements)

References 4 publications

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“…As demonstrated in Eq. ( 4) [33], charge transfer resistance derived from EIS data was utilized to compute percent IE" and (θ). 4) "Where R o ct and Rct are the resistance of the charge transfer in the absence and presence of the tested derivatives, respectively".…”

Section: Electrochemical Testsmentioning

confidence: 99%

Two novel acrylamide derivatives as corrosion inhibitors for API 5l x52 carbon steel in hydrochloric acid solution: synthesis and characterization

Fouda

Khalil

El-Mahdy

et al. 2023

Preprint

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Two new acrylamide derivatives were prepared namely: “N-(bis(2-hydroxyethyl) carbamothioyl) acrylamide (BHCA) and N-((2-hydroxyethyl) carbamothioyl) acrylamide( HCA) and their chemical structures were analyzed and confirmed using IR and 1H NMR”. These chemicals were investigated as corrosion inhibitors for carbon steel (CS) in 1 M HCl medium using chemical method (weight loss, WL), and electrochemical techniques including potentiodynamic polarization (PDP), and electrochemical impedance spectroscopy (EIS). The results showed that the acrylamide derivatives work well as corrosion inhibitors, with inhibition efficacy (%IE) reaching 94.91–95.28% at 60 ppm for BHCA and HCA, respectively. Their inhibition depend mainly on their concentration and temperature of the solution. According to the PDP files, these derivatives function as mixed-type inhibitors that physically adsorb on the CS surface in accordance with the Langmuir adsorption isotherm, creating a thin coating that shields the CS surface from corrosive fluids. The charge transfer resistance increased and the double layer capacitance (Cdl) decreased as a result of the adsorption of the used derivatives (Rct). Calculated and described were the thermodynamic parameters for activation and adsorption. Quantum chemistry computations and Monte Carlo simulations were examined and discussed for these derivatives under investigation. Validity of the obtained data was demonstrated by the confirmation of these several independent procedures.

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Section: Electrochemical Testsmentioning

confidence: 99%

Two novel acrylamide derivatives as corrosion inhibitors for API 5l x52 carbon steel in hydrochloric acid solution: synthesis and characterization

Fouda

Khalil

El-Mahdy

et al. 2023

Preprint

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“…IR: 1,628 cm -1 (-C=N-, azomethine), 870 cm -1 (aromatic protons of phenyl group), 2,920 cm -1 (CH 2 ), 2,850 cm -1 (CH 3 …”

Section: Synthesis Of 3-aminopyridine-vanillin Schiff Base (Vsb)mentioning

confidence: 99%

“…The urge of modification of natural compounds in different applications is due to the continuous accumulation of the chemical compounds in the environment and the difficulty of their degradation. Then, eco-friendly compounds were the solution of the environmental pollution [1][2][3][4][5][6]. In this study, naturally occurring vanillin was chemically modified into cationic surface active agents containing hydrocarbon chains with different lengths.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization and Surface Activity of New Eco‐friendly Schiff Bases Vanillin Derived Cationic Surfactants

Negm

Kandile

Mohamad³

2011

J Surfact & Detergents

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Three eco-friendly cationic surface active agents were synthesized from the chemical modification of vanillin. The chemical structures of these surfactants were confirmed using elemental analysis, IR and NMR spectra. The surface activity measurements showed their high tendency towards adsorption and micellization and their good surface tension reduction, low interfacial tension. The emulsion stability measurements showed acceptable efficiency as emulsifying agents for short term emulsions. The biodegradability tests revealed that these compounds are eco-friendly and had completely degraded in 30 days.

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“…The starting N-alkylimines (1-12) were prepared by conventional methods reported in the literature 26 with yields in the range of 82-97%. All N-alkylimines were obtained as single geometrical E-isomer.…”

Section: General Procedures For the Oxidation Of N-alkyliminesmentioning

confidence: 99%

Chemo-enzymatic synthesis of N-alkyloxaziridines mediated by lipases and urea-hydrogen peroxide

Bitencourt

Nascimento

2009

Green Chem.

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Chemo-enzymatic oxidation of various N-alkylimines mediated by lipases produced the corresponding E-or a mixture of E-and Z-N-oxaziridines with moderate to very high yields (>99%) and good to excellent selectivities (70-100%) within 30 min to 6 h in various organic solvents at room temperature (25 • C) with urea-hydrogen peroxide (UHP) or aqueous hydrogen peroxide (AHP). The E/Z isomer ratio was critically dependent on the stereo-electronic nature of the substituents in the N-alkylimines. The influence of organic solvents, acyl donor and lipase mass was evaluated in these reactions.

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Synthesis of long-chain Schiff bases containing ether and ester moieties by condensation of octadecylamine with vanillin, vanillal, and esters derived therefrom

Cited by 8 publications

References 4 publications

Two novel acrylamide derivatives as corrosion inhibitors for API 5l x52 carbon steel in hydrochloric acid solution: synthesis and characterization

Two novel acrylamide derivatives as corrosion inhibitors for API 5l x52 carbon steel in hydrochloric acid solution: synthesis and characterization

Synthesis, Characterization and Surface Activity of New Eco‐friendly Schiff Bases Vanillin Derived Cationic Surfactants

Chemo-enzymatic synthesis of N-alkyloxaziridines mediated by lipases and urea-hydrogen peroxide

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