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Aniline
Kinds of Aniline Terms modified by Aniline Selected AbstractsSynthesis and characterizations of nanosized iron(II) hydroxide and iron(II) hydroxide/poly(vinyl alcohol) nanocompositeJOURNAL OF APPLIED POLYMER SCIENCE, Issue 3 2010M. Fathima Parveen Abstract Nanosized Fe(OH)2 was synthesized by a coprecipitation method. Peaks between 500 and 1250 cm,1 in Fourier transform infrared (FTIR) spectroscopy confirmed the presence of metal hydroxide stretching. X-ray diffraction showed the suppressed crystalline system of Fe(OH)2/aniline (ANI) due to the presence of a higher weight percentage of the dispersing agent, ANI. Thermogravimetric analysis implied that 75.5 wt % of residue remained up to 800°C. High resolution transmission electron microscope (HRTEM) analysis of Fe(OH)2/ANI revealed that its size ranged from 10 to 50 nm with a rodlike morphology. Scanning electron microscopy implied that pristine Fe(OH)2 had a nanotriangular platelet morphology, and a higher weight percentage of dispersing agent intercalated with Fe(OH)2 had a spheroid with an agglomerated structure. The (UV,visible) spectrum implied the presence of Fe2+ ions at 326 nm and the existence of an amino group intercalated with Fe(OH)2 showed a sharp peak at 195 nm, the intensity of which increased with increasing intercalated dispersing agent weight percentage. Photoluminescence showed that ANI-intercalated Fe(OH)2 showed a lesser intensity than the pristine Fe(OH)2. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010 [source] Non-Covalent Aggregation of Discrete Metallo-Supramolecular Helicates into Higher Assemblies by Aromatic Pathways: Structural and Chemical Studies of New Aniline-Based Neutral Metal(II) DihelicatesEUROPEAN JOURNAL OF INORGANIC CHEMISTRY, Issue 17 2005Miguel Vázquez Abstract Neutral manganese(II), iron(II), cobalt(II), nickel(II), zinc(II) and cadmium(II) complexes with an N -tosyl-substituted N4 -donor Schiff base containing a 4,4'-methylenedianiline residue as spacer [H2La: N,N' -bis(2-tosylaminobenzylidene)-4,4'-methylenedianiline], and the zinc(II) complex with an analogous ligand [H2Lb: N,N' -bis(2-tosylaminobenzylidene)-4,4'-oxodianiline] have been prepared by an electrochemical procedure. FAB and ESI mass spectra of the complexes show peaks due to species corresponding to a general formula [M2(La,b)2 + H]+, thereby suggesting their dinuclear nature. A detailed study of the crystal packing in the unit cell of the zinc(II) complex with H2La shows that the helicates aggregate to form discrete prismatic moieties containing three molecules held together by ,,, and ,,, interactions. Moreover, the ZnII neutral dihelicate with H2Lb forms a 3D network in the solid state due to intermolecular ,-stacking interactions. 1H NMR studies of the diamagnetic compounds reported herein have been performed. Finally, the ligand H2La and its ZnII and CdII complexes have been studied by spectrophotometric and spectrofluorimetric techniques in order to get a better understanding of the formation mechanisms of the complexes and of the nature of their fluorescence emission. Emission studies show that the ZnII and CdII dihelicates with H2La display a green fluorescence in acetonitrile solution (, = 473 nm, , = 0.03 and , = 476 nm, , = 0.01, respectively). (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005) [source] Organocatalytic Three-Component Reactions of Pyruvate, Aldehyde and Aniline by Hydrogen-Bonding CatalystsEUROPEAN JOURNAL OF ORGANIC CHEMISTRY, Issue 25 2008Xin Li Abstract Hydrogen-bonding catalysts have been found to catalyze one-pot three-component reactions of pyruvate, anilines and aldehydes to afford versatile 3-amino-1,5-dihydro-2H -pyrrol-2-ones in high yields. Both, thioureas and phosphoric acids are viable catalysts for these reactions and have comparable activity. The corresponding chiral thioureas and phosphoric acids have also been used in these three-component reactions to give pyrrol-2-ones in high yields and with moderate enantioselectivities.(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008) [source] Comparison between the Photophysical Properties of Pyrazolo- and Isoxazolo[60]fullerenes with Dual Donors (Ferrocene, Aniline and Alkoxyphenyl)EUROPEAN JOURNAL OF ORGANIC CHEMISTRY, Issue 13 2007Laura Perez Abstract Two series of new pyrazolo- and isoxazolo[60]fullerenes covalently linked to vinylenephenylene bearing ferrocene, dibutylaniline or dodecyloxyphenyl electron-donor groups attached in the periphery have been synthesized. The photophysical properties of these newly synthesized dual-donor,C60 derivatives have been investigated and compared by applying time-resolved fluorescence and nanosecond transient techniques in both polar and nonpolar solvents. Charge separation via the excited singlet state of C60 is more efficient in the pyrazolo-C60 triads than in the isoxazolo-C60 triads. It was found that the pyrazoline ring mediates charge separation as a result of the stronger electron-donating character of the nitrogen atom of the pyrazoline ring compared with the oxygen atom of the isoxazoline ring. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007) [source] Interaction of FeO+ cation with benzene, aniline, and 3-methylaniline: DFT study of oxygen insertion mechanismINTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY, Issue 11 2008Karolina Kwapien Abstract The reaction pathways and energetics for oxygen insertion into CH bond in benzene, aniline, and 3-methylaniline by FeO+ in the gas phase were investigated by means of the DFT methodology with the B3LYP exchange-correlation functional and 6-311G** basis set. The main aim of this work was to elucidate the influence of substituents in phenyl ring on stationary points along the energy profile on sextet and quartet surfaces for the reaction of FeO+ with substituted benzenes. The studies show that the amino and methyl groups change the energetics of oxygen insertion by lowering the energy profile along the reaction pathway. The substituents studied in this work facilitate the insertion of oxygen into the aromatic CH bond by stabilizing the intermediate sigma complex (,-complex), the amino group being by far more effective. On the other hand, both functional groups increase the activation energy of the rate-determining step in the gas phase, so that they have unfavorable influence on the kinetics. The comparison of the energy diagrams for the sextet and quartet spin states indicates the dominance of the low-spin reactivity in oxygen insertion into aromatic CH bond. Aniline and 3-methylaniline oxidation occurs via electrophilic addition while the conversion of benzene to phenol by FeO+ is mediated by a ,-complex with mixed radical and cationic character. Present results are also discussed in the context of oxyferryl group reactivity. © 2008 Wiley Periodicals, Inc. Int J Quantum Chem, 2008 [source] An efficient synthesis of [13C6]-3,5-dichloroanilineJOURNAL OF LABELLED COMPOUNDS AND RADIOPHARMACEUTICALS, Issue 7 2008Bachir Latli Abstract 3,5-Dichloroaniline is commonly found in many compounds with pharmacological and other biological activities. [13C6]-Aniline or its hydrochloride salt was converted in three steps to [13C6]-3,5-dichloroaniline, which can be incorporated in compounds of interest and used as internal standards in drug metabolism and pharmacokinetics (DMPK) studies. Copyright © 2008 John Wiley & Sons, Ltd. [source] Partition Coefficient Kow of Benzene, Ethanol and Aniline in Benzene-ethanol and Aniline-benzene Mixtures and Coefficient of Distribution Kmix of these MixturesMOLECULAR INFORMATICS, Issue 4 2006M. Rucki Abstract The study related to partition coefficients between n-octanol and water Kow of compounds in binary mixtures benzene-ethanol and benzene-aniline was carried out. Partition coefficients of benzene, aniline and ethanol for different values of molar ratio of benzene and different total concentration of compounds in the mixtures benzene-ethanol and benzene-aniline were determined. Coefficient of distribution Kmix was determined for both mixtures. In benzene-ethanol mixture collected results show statistically significant deviations the Kow of benzene from values for pure compound. For ethanol, there are no statistically significant deviations from values for pure compound. But also there are some trends of changes of Kow. In benzene-aniline mixture collected results show statistically significant deviations of the Kow of benzene and aniline from values for pure compounds. Changes of Kow were used for explanation of acute toxicity of binary mixtures benzene-ethanol and aniline-benzene. [source] Validation of a real-time monitoring method for aniline in freshwater by high-performance liquid chromatography on porous graphitic carbon/electrospray ionization tandem mass spectrometryRAPID COMMUNICATIONS IN MASS SPECTROMETRY, Issue 14 2004Raphaël Delépée Aniline is an anthropogenic organic compound widely used in polymer, rubber, pharmaceutical and dye industries but also used in biodegradability assays of chemical compounds as a positive biodegradation standard. By the two approaches, the rapid determination of aniline is necessary because of the high toxicity of aniline on hemoglobin. A high-performance liquid chromatography/tandem mass spectrometry (HPLC/MS/MS) method for the determination of aniline in water is described here. This method, using benzylamine as internal standard, was validated. No time-consuming sample preparation was needed. A rapid separation (7,min between two chromatographic runs) of aniline and benzylamine was performed on a Hypercarb porous graphitic carbon column using a gradient of methanol and 100,mM formic acid. The obtained limits of detection and quantification were 10 and 1,ng/mL, respectively. The response for aniline was quadratic. We show that this problem could be circumvented by showing that the [calculated concentration,=,f(introduced concentration)] function was linear. The linearity range was 10,1000,ng/mL. An example of an application consisting of an aniline 42-day degradation kinetic in water was demonstrated. Copyright © 2004 John Wiley & Sons, Ltd. [source] ChemInform Abstract: Catalytic Activity of Iron(III), Aluminum(III), Cobalt(II), and Magnesium(II) Chloride Crystal Hydrates in the Condensation of Aniline with Butyraldehyde.CHEMINFORM, Issue 9 2010R. G. Bulgakov Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source] ChemInform Abstract: Organocatalytic Asymmetric Aza-Michael Addition of Aniline to Chalcones under Solvent-Free Conditions.CHEMINFORM, Issue 11 2009Arrigo Scettri Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source] ChemInform Abstract: One-Pot Direct Synthesis of Thiocarbamates from Aniline, Carbon Monoxide, and Thiols Catalyzed by Selenium.CHEMINFORM, Issue 9 2008Xiaopeng Zhang Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source] Regioselectivity in Lewis Acid Catalyzed X,H (O, S, N) Insertions of Methyl Styryldiazoacetate with Benzyl Alcohol, Benzyl Thiol, and Aniline.CHEMINFORM, Issue 36 2007Yongli Yue Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF. [source] N-Methyl,N-(propyl-3-trimethoxysilyl) Aniline (III), an Intermediate for Anchoring Dyes on Siliceous Supports.CHEMINFORM, Issue 43 2005Maria Comes No abstract is available for this article. [source] A New and Facile Route for the Synthesis of Thiocarbamates from Aniline, Carbon Monoxide, and Thiols Mediated by Selenium.CHEMINFORM, Issue 36 2005Xiaopeng Zhang No abstract is available for this article. [source] Synthesis of Diiodo- and Triiodoanilines by Iodination of Aniline with Potassium Dichloroiodate and Preparation of 1,3,5-Triiodobenzene.CHEMINFORM, Issue 49 2004S. Z. Vatsadze Abstract For Abstract see ChemInform Abstract in Full Text. [source] Alkylation of Aniline over Base Zeolites.CHEMINFORM, Issue 41 2002R. B. C. Pillai Abstract For Abstract see ChemInform Abstract in Full Text. [source] Catalytic One-Pot Synthesis of N-Phenyl Alkyl Amides from Alkene and Aniline in the Presence of Cobalt on Charcoal under Carbon Monoxide.CHEMINFORM, Issue 40 2002Sang Ick Lee Abstract For Abstract see ChemInform Abstract in Full Text. [source] Steady-State and Time-Resolved Studies on Photoinduced Disulfide Bond Cleavage Using Aniline as an Electron DonorCHEMPHYSCHEM, Issue 3 2004Changyuan Lu Dr. Crucial radicals: The aniline-mediated photochemical disulfide bond cleavage of linear or cyclic disulfide compounds (RSSR; see scheme) is shown to initiate by a photoinduced electron transfer from the excited state of aniline as well as by reduction with solvated electrons produced by the direct photoionization of aniline. The crucial intermediates in the disulfide cleavage are the disulfide radical anions. [source] Synthesis of New Sterically Hindered AnilinesEUROPEAN JOURNAL OF ORGANIC CHEMISTRY, Issue 19 2007Barry R. Steele Abstract Ring-alkylated primary, secondary and tertiary anilines have been ethylated with ethylene at benzylic positions in a simple and inexpensive one-pot procedure which is mediated bythe use of the superbase system nBuLi/LiK(OCH2CH2NMe2)2in the presence of Mg(OCH2CH2OEt)2. Primary and secondary anilines are ethylated readily at ortho -benzylic positions but with difficulty or not at all at other positions. Tertiaryanilines are ethylated at all positions. Mono- or diethylation occurs depending on the steric constraints present.(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007) [source] Synthesis of Dihalo-Substituted Analogues of Tröger's Base from ortho - and meta -Substituted AnilinesEUROPEAN JOURNAL OF ORGANIC CHEMISTRY, Issue 16 2003Anna Hansson Abstract For the first time, ortho - and meta -halo-substituted anilines were successfully condensed with formaldehyde to dihalo-substituted analogues of Tröger's base. By using paraformaldehyde and TFA, yields of 2,85% of these potential supramolecular building blocks were obtained. Even the inconceivable achievement of condensing anilines unsubstituted in para -position to analogues of Tröger's base was successful. Adding our present results to our previous, makes it now possible to synthesize analogues of Tröger's base halo-substituted in almost any desired position in each of its two aromatic rings. In addition the first X-ray structure of a dihalo-substituted analogue of Tröger's base, 3,9-dibromo-4,10-dimethyl-6H,12H -5,11-methanodibenzo[b,f][1,5]diazocine (17), is presented. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003) [source] An Expeditious Copper-Catalyzed Access to 3-Aminoquinolinones, 3-Aminocoumarins and Anilines using Sodium AzideADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 10 2010Samir Messaoudi Abstract An efficient copper-catalyzed in situ C(sp2)NH2 bond formation to provide a range of 3-aminoquinolin-2(1H)-ones and 3-aminocoumarins from 3-bromoquinolinones and 3-bromocoumarins, respectively, has been achieved. The reaction conditions involve the use of copper powder as the catalyst, eco-friendly ethanol as the solvent in the presence of pipecolinic acid as the ligand and ascorbic acid as the additive. The efficiency of this practical method was demonstrated in the synthesis of various anilines. [source] Anodic Oxidation and Organocatalysis: Direct Regio- and Stereoselective Access to meta -Substituted Anilines by ,-Arylation of Aldehydes,ANGEWANDTE CHEMIE, Issue 1 2010Synthese mit Potenzial: Durch anodische Oxidation und organokatalytische ,-Arylierung von Aldehyden mit elektronenreichen Aren sind meta -substituierte Aniline und Dihydrobenzofurane in guten Ausbeuten und mit hervorragenden Enantioselektivitäten zugänglich (siehe Schema; Pg=Schutzgruppe). Dieses neue Konzept verbindet Organokatalyse und Elektrochemie. [source] ChemInform Abstract: Copper-Mediated Cyclization,Halogenation and Cyclization,Cyanation Reactions of ,-Hydroxyalkynes and o-Alkynylphenols and Anilines.CHEMINFORM, Issue 40 2010Nalivela Kumara Swamy Abstract The reactions allow a new and direct access to functionalized furopyrroles, benzofurans, and indoles. [source] ChemInform Abstract: Base-Mediated Rearrangement of Free Aromatic Hydroxamic Acids (ArCO,NHOH) to Anilines.CHEMINFORM, Issue 36 2009Yujiro Hoshino Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source] ChemInform Abstract: Rhodium(I)-Catalyzed Cyclization Reaction of o-Alkynyl Phenols and Anilines.CHEMINFORM, Issue 30 20093-Disubstituted Benzofurans, Domino Approach to , Indoles. Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source] ChemInform Abstract: An Efficient, Rapid, and Regioselective Bromination of Anilines and Phenols with 1-Butyl-3-methylpyridinium Tribromide as a New Reagent/Solvent under Mild Conditions.CHEMINFORM, Issue 23 2009Sanjay P. Borikar Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source] ChemInform Abstract: A Very Simple Copper-Catalyzed Synthesis of Anilines by Employing Aqueous Ammonia.CHEMINFORM, Issue 20 2009Ning Xia Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source] ChemInform Abstract: A Simple, Cost-Effective Method for the Regioselective Deuteration of Anilines.CHEMINFORM, Issue 6 2009Andrew Martins Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source] ChemInform Abstract: Aryl Triolborates: Novel Reagent for Copper-Catalyzed N Arylation of Amines, Anilines, and Imidazoles.CHEMINFORM, Issue 51 2008Xiao-Qiang Yu Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source] ChemInform Abstract: Oxidation of Anilines with Hydrogen Peroxide and Selenium Dioxide as Catalyst.CHEMINFORM, Issue 42 2008Christin Gebhardt Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source] | ||||||||||||||||||||||||||||||||||