15486-62-1Relevant academic research and scientific papers
Synthesis, growth, spectral, thermal, mechanical and optical properties of 4-chloro-4′dimethylamino-benzylidene aniline crystal: A third order nonlinear optical material
Leela,Ramamurthi,Bhagavannarayana
, p. 78 - 83 (2009)
An organic nonlinear optical material, 4-chloro-4′dimethylamino-benzylidene aniline (CDMABA), was synthesized by the condensation of the p-chloroaniline and p-dimethylaminobenzaldehyde. Solubility of CDMABA was determined in acetone at different temperatu
Synthesis and photophysical properties of fluorescent arylstyrylimidazo[1,2-a]pyridine-based donor-acceptor chromophores
Sefero?lu, Zeynel,Ihmels, Heiko,?ahin, Ertan
, p. 465 - 473 (2015/03/18)
A series of novel fluorescent arylstyrylimidazo[1,2-a]pyridines was synthesized and fully characterized. All styryl derivatives have an E-configuration of the vinyl double bond as unequivocally shown by 1H NMR spectroscopy. It was observed that
An expeditious one-pot synthesis of substituted phenylazetidin-2-ones in the presence of zeolite
Pagadala, Ramakanth,Meshram, Jyotsna S.,Chopde, Himani N.,Jetti, Venkateshwarlu,Udayini
experimental part, p. 1067 - 1072 (2011/10/31)
In this study, one-pot rapid and efficient series of phenylazetidin-2-ones were synthesized from N,N-dimethylaminobenzaldehyde, different substituted aromatic amines and phenylacetyl chloride in the presence of zeolite catalyst under microwave irradiation. We also reported schiff bases (1a-j) by classical and conventional microwave technique. The titled compounds are evaluated for their antimicrobial properties. The activities are due to Ci=O, Ci-N, linkages in 2-azetidinones. All the compounds have shown comparable antibacterial activities.
Substituent cross-interaction effects on the electronic character of the C=N bridging group in substituted benzylidene anilines - Models for molecular cores of mesogenic compounds. A 13C NMR study and comparison with theoretical results
Neuvonen, Helmi,Neuvonen, Kari,Fueloep, Ferenc
, p. 3141 - 3148 (2007/10/03)
13C NMR chemical shifts δc(C=N) were measured in CDCl 3 for a wide set of mesogenic molecule model compounds, viz. the substituted benzylidene anilines P-X-C6H4CH=NC 6H4-p-Y (X = NO2, CN, CF3, F, Cl, H, Me, MeO, or NMe2; Y = NO2, CN, F, Cl, H, Me, MeO, or NMe2). The substituent dependence of δc(C=N) was used as a tool to study electronic substituent effects on the azomethine unit. The benzylidene substituents X have a reverse effect on δc(C=N): electron-withdrawing substituents cause shielding, while electron-donating ones behave oppositely, the inductive effects clearly predominating over the resonance effects. In contrast, the aniline substituents Y exert normal effects: electron-withdrawing substituents cause deshielding, while electron-donating ones cause shielding of the C=N carbon, the strengths of the inductive and resonance effects being closely similar. Additionally, the presence of a specific cross-interaction between X and Y could be verified. The electronic effects of the neighboring aromatic ring substituents systematically modify the sensitivity of the C=N group to the electronic effects of the benzylidene or aniline ring substituents. Electron-withdrawing substituents on the aniline ring decrease the sensitivity of δc(C=N) to the substitution on the benzylidine ring, while electron-donating substituents have the opposite effect. In contrast, electron-withdrawing substituents on the benzylidene ring increase the sensitivity of δc(C=N) to the substituent on the aniline ring, while electron-donating substituents act in the opposite way. These results can be rationalized in terms of the substituent-sensitive balance of the electron delocalization (mesomeric effects). The present NMR characteristics are discussed as regards the computational literature data. Valuable information has been obtained on the effects of the substituents on the molecular core of the mesogenic model compounds.
Electrochemical Synthesis of Heterocyclic Compounds. 17. Anodic Oxidation of Hydrazones in the Presence of Heteroaromatic and Schiff Bases
Gunic, Esmir,Tabakovic, Ibro
, p. 5081 - 5087 (2007/10/02)
Anodic oxidation of a series of hydrazones in the presence of heteroaromatic and Schiff bases were performed in acetonitrile-tetraethylammonium perchlorate electrolyte solution at platinum using controlled potentials.As a result of four-electron oxidation several s-triazolopyridinium perchlorates (1-9), s-triazoloquinolinium perchlorate (10), s-triazoloisoquinolinium perchlorate (11), and s-triazolobenzoquinolinium perchlorate (12) were obtained in yields ranging from 30percent to 90percent.As a result of two-electron oxidation of -p-nitrophenylhydrazine (A) in the presence of imidazole and 1,2,4-triazole the azo derivatives 13 and 14 were obtained with high yields.As a result of two-electron oxidation of hydrazone A in the presence of Schiff bases the new Schiff bases 15-20 were obtained in high yields.On the bases of the electroanalytical and preparative results it is concluded that the electrochemical oxidation of hydrazone A in the presence of heteroaromatic and Schiff bases occurs through the formation of cation B, which is attacked by base as a nucleophile.This excludes the possibility of annelation of the heteroaromatics through nitrilimine as an intermediate.
MOLECULAR-IONIC TAUTOMERISM OF 4-DIMETHYLAMINO-BENZYLIDENE-4-CHLOROANILINE: HCl COMPLEX
Hadjoudis, E.
, p. 17 - 28 (2007/10/02)
When gaseous HCl interacts with yellow crystalline N-(4-dimethylamino-benzylidene)-4-chloroaniline a red-orange charge transfer crystalline complex is formed.When this crystalline complex is dissolved in polar sovents an intracomplex proton-transfer takes
Polarographic investigations on azomethines: Benzal-p-chloranilines in alkaline medium and effect of substituents on half-wave potentials
Katiyar, Sarvagya S.,Lalithambika, M.
, p. 961 - 973 (2007/10/02)
Polarographic behavior of twenty-four substituted benzal-p-chloranilines has been investigated in 50percent methanol-water medium in alkaline pH range.The experimental conditions for the study were so designed that no appreciable hydrolysis of the Schiff
