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Showing 1-30 of 33 results for "488100" within Papers
Aleem Gangjee et al.
Bioorganic & medicinal chemistry, 21(4), 891-902 (2013-01-22)
A series of fourteen N(4)-(substituted phenyl)-N(4)-alkyl/desalkyl-9H-pyrimido[4,5-b]indole-2,4-diamines was synthesized as potential microtubule targeting agents. The synthesis involved a Fisher indole cyclization of 2-amino-6-hydrazinylpyrimidin-4(3H)-one with cyclohexanone, followed by oxidation, chlorination and displacement with appropriate anilines. Compounds 6, 14 and 15 had low
Regina Mažeikienė et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 106, 34-40 (2013-01-30)
For the first time, chemical oxidation of aniline and N-methylaniline with dichromate as oxidant has been studied by Raman spectroscopy with 785 nm laser beam excitation, and the suitability of this technique for kinetic study of this process was demonstrated.
Timo Stahl et al.
Journal of the American Chemical Society, 135(4), 1248-1251 (2013-01-15)
Heterolytic splitting of the Si-H bond mediated by a Ru-S bond forms a sulfur-stabilized silicon cation that is sufficiently electrophilic to abstract fluoride from CF(3) groups attached to selected anilines. The ability of the Ru-H complex, generated in the cooperative
Ghazwan Ali Salman et al.
Organic & biomolecular chemistry, 10(47), 9464-9473 (2012-11-07)
Benzofuroquinolines were prepared by a new type of Pd catalyzed annulation reaction. In the first step, 2-alkynyl-3-bromobenzofurans were prepared by Sonogashira reactions of 2,3-dibromobenzofuran. Their Pd catalyzed reaction with electron-rich anilines afforded benzofuroquinolines by a domino C-N coupling/annulation process. This
Habib Bagheri et al.
Analytica chimica acta, 794, 38-46 (2013-08-27)
A novel Fe3O4-poly(aniline-naphthylamine)-based nanocomposite was synthesized by chemical oxidative polymerization process as a magnetic sorbent for micro solid phase extraction. The scanning electron microscopy images of the synthesized nanocomposite revealed that the copolymer posses a porous structure with diameters less
Xuejian Li et al.
Chemical communications (Cambridge, England), 49(14), 1401-1403 (2013-01-12)
The first catalytic asymmetric pseudo five-component (AB(2)C(2) type) reaction is reported. A spirocyclic chiral phosphoric acid catalyzed one-pot multicomponent reaction of aromatic aldehydes, anilines and β-ketoesters and afforded highly functionalized enantioenriched tetrahydropyridines with high levels of stereocontrol.
Chen Zhang et al.
Organic & biomolecular chemistry, 11(34), 5621-5633 (2013-07-19)
Diverse reactivity by coupling of substituted anilines with ethyl trifluoropyruvate was developed under microwave irradiation without catalysts to generate 3-trifluoromethyl-3-hydroxy oxindoles, aromatic hydroxy trifluoromethyl esters, and 1,2-dicarbonyl compounds in a fast and efficient manner. The plausible mechanism for obtaining different
Felix A Westerhaus et al.
Nature chemistry, 5(6), 537-543 (2013-05-23)
Molecularly well-defined homogeneous catalysts are known for a wide variety of chemical transformations. The effect of small changes in molecular structure can be studied in detail and used to optimize many processes. However, many industrial processes require heterogeneous catalysts because
One-pot ring-closing metathesis/1,3-dipolar cycloaddition through assisted tandem ruthenium catalysis: synthesis of a dye with isoindolo[2,1-a]quinoline structure.
Mitsuhiro Arisawa et al.
Angewandte Chemie (International ed. in English), 52(3), 1003-1007 (2012-12-01)
Wen Chen et al.
Journal of the American Chemical Society, 135(11), 4438-4449 (2013-03-02)
A series of linear and cyclic, sequence controlled, DNA-conjoined copolymers of aniline (ANi) and 2,5-bis(2-thienyl)pyrrole (SNS) were synthesized. In one approach, linear copolymers were prepared from complementary DNA oligomers containing covalently attached SNS and ANi monomers. Hybridization of the oligomers
Huaxian Ma et al.
Toxicology and applied pharmacology, 267(3), 276-283 (2013-01-29)
Mechanisms by which aniline exposure elicits splenotoxicity, especially a tumorigenic response, are not well-understood. Earlier, we have shown that aniline exposure leads to oxidative DNA damage and up-regulation of OGG1 and NEIL1/2 DNA glycosylases in rat spleen. However, the contribution
David Bonnel et al.
Analytical biochemistry, 434(1), 187-198 (2012-11-13)
In the current study, we compared plastic matrix-assisted laser desorption/ionization (MALDI) plates pre-spotted with different solid ionic matrices. Data reflect that after 3 months of storage, the standards were oxidized in α-cyano-4-hydroxycinnamic acid (HCCA) whether or not in HCCA/3-acetylpyridine (3APY)
Masahiro Takeo et al.
Journal of bacteriology, 195(19), 4406-4414 (2013-07-31)
Acinetobacter sp. strain YAA has five genes (atdA1 to atdA5) involved in aniline oxidation as a part of the aniline degradation gene cluster. From sequence analysis, the five genes were expected to encode a glutamine synthetase (GS)-like protein (AtdA1), a
A Subashini et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 104, 403-408 (2013-01-01)
One of the Schiff base 4-bromo-4'dimethylamino benzylideneaniline (BDMABA) compounds was synthesized and single crystal of the material was grown by solvent evaporation method at room temperature. Molecular structure of BDMABA was confirmed by (1)H nuclear magnetic resonance and the presence
Mei-Qiang Cai et al.
Journal of chromatography. A, 1349, 24-29 (2014-05-27)
A novel amphiphilic polymeric ionic liquid membrane containing a hydrophilic bromide anion and a hydrophobic carbonyl group was synthesized in dimethylformamide (DMF) systems using the ionic liquid 1-butyl-3-vinylimidazolium bromide (BVImBr) and the methylmethacrylate (MMA) as monomers. The prepared amphiphilic ploy-methylmethacrylate-1-butyl-3-vinylimidazolium
Dongdong Liang et al.
Chemical communications (Cambridge, England), 49(2), 173-175 (2012-11-22)
An efficient synthesis of free (NH)-phenanthridinones through Pd-catalyzed C(sp(2))-H aminocarbonylation of unprotected o-arylanilines under an atmospheric pressure of CO has been developed. Some ortho heteroarene substituted anilines as well as N-alkyl protected o-arylanilines are also suitable substrates for this C-H
Roman Spesyvtsev et al.
Faraday discussions, 157, 165-179 (2012-12-13)
Femtosecond time-resolved photoelectron imaging is employed to investigate ultrafast electronic relaxation in aniline, a prototypical aromatic amine. The molecule is excited at wavelengths between 269 and 238 nm. We observe that the S2(pi3s/pi sigma*) state is populated directly during the
Sung Jin Bae et al.
European journal of medicinal chemistry, 57, 383-390 (2012-11-15)
We attempted to design and synthesize (E)-N-substituted benzylidene-hydroxy or methoxy-aniline derivatives and to evaluate their inhibitory effect on tyrosinase activity and anti-melanogenesis activity in murine B16F10 melanoma cells. Derivatives with a 4-methoxy- or 4-hydroxy-anilino group exerted more potent inhibition against
Huihui Yang et al.
Electrophoresis, 34(4), 510-517 (2012-11-23)
A novel (3-sulfopropyl methacrylate potassium)-silica hybrid monolithic column for CEC has been prepared by a simple one-pot approach based on efficient thiol-ene click chemistry. In this process, the polycondensation of hydrolyzed alkoxysilanes and in situ click reaction of vinyl groups
Conghui Tang et al.
Journal of the American Chemical Society, 134(46), 18924-18927 (2012-11-08)
A novel and efficient copper-catalyzed azidation reaction of anilines via C-H activation has been developed. This method, in which the primary amine acts as a directing group by coordinating to the metal center, provides ortho azidation products regioselectively under mild
Laya Siroos Rezaei et al.
Environmental technology, 33(19-21), 2273-2280 (2013-02-12)
Aerobic granules can be formed in sequencing batch airlift reactors (SBAR) and sequencing batch reactors (SBR). Comparing these two systems, the SBAR has excellent mixing condition, but due to a high height-to-diameter ratio (H/D), there is no performance capability at
Palladium-catalyzed insertion of α-diazocarbonyl compounds for the synthesis of cyclic amino esters.
Ping-Xin Zhou et al.
Chemical communications (Cambridge, England), 49(6), 561-563 (2012-12-05)
Two different cyclic amino esters are synthesized by palladium-catalyzed cross-coupling reaction of diazoesters with N-substituted-2-iodoanilines. Aryldiazoacetates lead to cyclic α-amino esters with an α-quaternary carbon centre in the presence of CO. Additionally, arylvinyldiazoacetates afford cyclic α,β-unsaturated γ-amino esters.
Rui Wang et al.
The Journal of organic chemistry, 78(17), 8696-8704 (2013-08-27)
The hydroxyl-substituted benzoic acid (as phenyl group A in the product), aniline (as phenyl group B in the product), benzaldehyde (as phenyl group C in the product), and four isocyanides are employed to synthesize bis-amide via an Ugi four-component reaction.
Yu Qian et al.
Chemical communications (Cambridge, England), 49(26), 2700-2702 (2013-02-26)
An enantioselective four-component reaction of a diazoketone, water, an aniline and ethyl glyoxylate in the presence of catalytic Rh2(OAc)4 and a chiral Brønsted acid was developed to efficiently produce β-hydroxy-α-amino acid derivatives in good yields with high diastereoselectivity and enantioselectivity.
Milena Trmčić et al.
Organic & biomolecular chemistry, 11(16), 2660-2675 (2013-03-08)
We recently reported the use of PSCl3 for the thiophosphorylation of alkylamines where the resulting N-thiophosphoramidate ions could be readily S-alkylated (Chem. Commun., 2011, 47, 6156-6158.). Herein we report the development of this methodology using amino acid, amino sugar, aminonucleoside
A M Hidalgo et al.
Environmental technology, 35(9-12), 1175-1181 (2014-04-08)
Aniline is commonly used in a number of industrial processes. It is known to be a harmful and persistent pollutant and its presence in wastewater requires treatment before disposal. In this paper, the effectiveness of nanofiltration (NF) to remove aniline
Brandon Djukic et al.
The Journal of organic chemistry, 78(18), 9340-9344 (2013-08-27)
The synthesis and electrochemical oxidative coupling of a highly electron-deficient analogue of aniline results in the formation of soluble electron-deficient oligomers. Oligomers undergo related oxidation and reduction processes that are separated by a wide potential range. The mechanism behind this
B V Subba Reddy et al.
The Journal of organic chemistry, 77(24), 11355-11361 (2012-12-05)
A domino cycloisomerization/Pictet-Spengler reaction of 2-(4-aminobut-1-yn-1-yl)aniline with aldehydes has been achieved using a AuIPrCl (5 mol %)/AgSbF(6) (10 mol %) catalytic system to produce the corresponding 1-aryl-N-tosyl-2,3,4,5-tetrahydropyrido[4,3-b] indole derivatives in good yields. This is the first report on the synthesis
C D Wu et al.
Water science and technology : a journal of the International Association on Water Pollution Research, 67(7), 1620-1626 (2013-04-05)
The feasibility of using raw diatomite and aluminum hydroxide-modified diatomite (Al-diatomite) for removal of aniline and phenol from water was investigated. Their physicochemical characteristics such as pHsolution, point of zero charge (pHPZC), surface area, Fourier transform infrared (FT-IR) and scanning
Hannelore Jasch et al.
The Journal of organic chemistry, 77(23), 10699-10706 (2012-11-08)
Substituted 2-aminobiphenyls have been prepared from arylhydrazines and anilines via radical arylation reactions under simple oxidative conditions. The strong directing effect of the free and unprotonated amino functionality leads to high regioselectivities, and anilines have been shown to be significantly
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