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Moiety
Kinds of Moiety Selected AbstractsA New Trinuclear Linear Copper(II) Complex: Unusual Crystal Structure with Semi-Coordinated Thiophene Moieties and Weak Antiferromagnetic Coupling Through the Bridging Imidazolate RingsEUROPEAN JOURNAL OF INORGANIC CHEMISTRY, Issue 23 2004Yufei F. Song Abstract A trinuclear copper(II) complex, [Cu3(imthio)2(NO3)4(MeOH)2] [where Himthio is 1,1-bis(imidazol-2-yl)-3-(thiophen-2-yl)-2-azapropane], has been synthesized by the reaction of Himthio with Cu(NO3)2·3H2O in MeOH. The structure of the copper complex is centrosymmetric and contains a linear trinuclear array of copper atoms. The central copper(II) ion, Cu1, which lies on an inversion centre, is equatorially coordinated by four nitrogen atoms from two anionic imthio ligands and axially by two semicoordinated thiophene sulfur atoms to give an octahedral environment (Cu1,S1 3.136 Å). The Himthio ligand bridges Cu1 and the terminal copper(II) ions through imidazole nitrogen atoms. The coordination around the external ions is completed by the oxygen atoms from two nitrate groups and by a methanol molecule in a distorted square-pyramidal geometry. The two terminal copper(II) complexes can be considered to be chelating ligands for the central CuII ion. The EPR spectrum of the complex in MeOH at 77 K shows two mononuclear species, as is fully confirmed by EPR simulation. Magnetic susceptibility of the complex shows weak antiferromagnetic behaviour (J = ,71.37 cm,1) caused by the overlapping of the magnetic orbitals of the copper atoms and the bridging imidazolate rings. (© Wiley-VCH Verlag GmbH & Co.. KGaA, 69451 Weinheim, Germany, 2004) [source] Copper-Catalyzed Activation of Disulfides as a Key Step in the Synthesis of Benzothiazole MoietiesEUROPEAN JOURNAL OF ORGANIC CHEMISTRY, Issue 15 2010Jakub Hyvl Abstract A convenient synthesis of substituted benzothiazoles has been accomplished by way of a copper catalyzed reaction of aromatic disulfide amines and aldehydes. The process, which involves copper catalyzed activation of disulfide functionality, proceeds in a tandem fashion via C,H bond activation, followed by aerobic oxidation of a resulting dihydrobenzothiazole intermediate. The scope and limitations of the reaction are demonstrated on a variety of substrates. [source] Synthesis and Properties of New Nucleotide Analogues Possessing Squaramide Moieties as New Phosphate Isosters,EUROPEAN JOURNAL OF ORGANIC CHEMISTRY, Issue 24 2005Kohji Seio Abstract New analogues of 2,-deoxynucleotides and ribonucleotides incorporating a unique squaramide structure were synthesized. Because of the strong acidity of this moiety (pKa = 2.3), these nucleotide analogues exist in a monoanionic form, which can be regarded as an electronic isoster of 5,-nucleotides under physiological conditions. The synthesis of the nucleotide analogues was achieved through the condensation of 5,- or 3,-aminonucleosides with dimethyl squarate, whilst the selective removal of the methyl group was effectively accomplished by treatment with sodium bromide. In addition, we also synthesized 3,,5,-cyclic nucleotide analogues from the 3,,5,-diazidonucleoside derivatives. NMR analysis revealed that their ribose puckering was of an N-type form, identical to that in cAMP and cGMP. Because of the unique structural, electronic, and conformational properties of squaramide-type nucleotide analogues, these analogues should be quite interesting as potential biologically active compounds such as antiviral and anticancer agents. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005) [source] Enantioselective Recognition of Aliphatic Amino Acids by ,-Cyclodextrin Derivatives Bearing Aromatic Organoselenium Moieties on the Primary or Secondary SideEUROPEAN JOURNAL OF ORGANIC CHEMISTRY, Issue 8 2003Yu Liu Abstract Spectrophotometric titrations have been performed in order to determine the stability constants of inclusion complexation of some aliphatic amino acids with four structurally related organoselenium-modified ,-cyclodextrins: mono(6-phenylseleno-6-deoxy)-,-cyclodextrin (1a), mono[6-(p -methoxyphenylseleno)-6-deoxy]-,-cyclodextrin (1b), mono(2-phenylseleno-2-deoxy)-,-cyclodextrin (2a), and mono[2-(p -methoxyphenylseleno)-2-deoxy]-,-cyclodextrin (2b). Conformation analysis by circular dichroism and 2D NMR spectroscopic studies revealed that the aryl-substituted ,-cyclodextrins gave self-inclusion intramolecular complexes in aqueous solution, while the extent of penetration depended both on the positions and on the structures of substituents. Quantitative investigation on the binding ability of the hosts with amino acids showed that they were able to recognize the size and the shape of guests, affording supramolecular complexes with quite small stability constants ranging from 24 to 355 M,1. The molecular recognition abilities are discussed from the viewpoints of induced-fitting mechanisms, geometric complementary, and cooperative binding processes. Furthermore, these ,-cyclodextrin derivatives displayed considerable enantioselectivity towards L/D -amino acid isomers, giving the highest L -enantioselectivity (up to 8.4) for inclusion complexation between leucine and 2a. The binding modes of L/D -leucine with 1b were elucidated from NOESY studies and the chiral recognition phenomena were interpreted accordingly. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003) [source] Helically ,-Stacked Conjugated Polymers Bearing Photoresponsive and Chiral Moieties in Side Chains: Reversible Photoisomerization-Enforced Switching Between Emission and Quenching of Circularly Polarized FluorescenceADVANCED FUNCTIONAL MATERIALS, Issue 8 2010Hiroyuki Hayasaka Abstract Novel multifunctional conjugated polymers, [poly(p -phenylene)s and poly(bithienylene-phenylene)s with (R)- and (S)-configurations], which have fluorescence, chirality, and photoresponsive properties, have been designed and synthesized. The polymers are composed of ,-conjugated main chains, where poly(p -phenylene) and poly(bithienylene-phenylene) are fluorescence moieties, and the side chains of the photochromic dithienylethene moiety are linked with chiral alkyl groups. The polymer films exhibit right- or left-handed circularly polarized fluorescence (CPF) and also show reversible quenching and emitting behaviors as a result of photochemical isomerization of the dithienylethene moiety upon irradiation with ultraviolet and visible light. This is the first report realizing the reversible switching of CPF using chirality and photoresponsive properties. [source] Charge-Transporting Polymers based on Phenylbenzoimidazole MoietiesADVANCED FUNCTIONAL MATERIALS, Issue 3 2010Marc Debeaux Abstract A series of novel styrene functionalized monomers with phenylbenzo[d]imidazole units and the corresponding homopolymers are prepared. These side-chain polymers show high glass-transition temperatures that even exceed the corresponding value for the common electron-transporting material 1,3,5-tris(1-phenyl-1H -benzo[d]imidazol-2-yl)benzene (TPBI). Similar electronic behavior between the polymers and TPBI is shown. The polymers are used as matrices for phosphorescent dopants. The fabricated devices exhibit current efficiencies up to 38.5,cd A,1 at 100,cd,m,2 and maximum luminances of 7400,cd m,2 at 10,V with a minimum turn-on voltage as low as 2.70,V in single-layer devices with an ITO/PEDOT:PSS anode (ITO,=,indium tin oxide, PEDOT:PSS,=,poly(3,4-ethylenedioxythiophene) doped with poly(styrenesulfonate)) and a CsF/Ca/Ag cathode. [source] Synthesis and Triple-Helix-Stabilization Properties of Branched Oligonucleotides Carrying 8-Aminoadenine MoietiesHELVETICA CHIMICA ACTA, Issue 2 2004Anna Aviño The synthesis of several branched oligonucleotides, i.e., of the parallel hairpins 5,8 and the Y-shaped 9 is described, together with their use in the formation of pyrimidine,pyrimidine,purine triple helices. Special attention was paid to the optimization of the assembly of the second strand from asymmetric branching molecules. The presence of 8-aminoadenine moieties in the WatsonCrick purine strand and 2,- O -methyl-RNA in the Hoogsteen pyrimidine strand produced strong stabilization of the triplex. [source] Allylic Sulfones Containing Triene Moieties as Key Synthons for Carotenoid SynthesisHELVETICA CHIMICA ACTA, Issue 7 2003Minkoo Ji An efficient synthetic method for the allylic sulfone 2 containing a conjugated triene moiety has been proposed involving i) coupling of allylic sulfones 4 with the C5 bromoallylic sulfide 5, ii) base-promoted dehydrosulfonation in the presence of allylic sulfide, and iii) selective oxidation of the resulting trienyl sulfide to the corresponding sulfone. Total synthesis of lycopene starting from the C15 allylic sulfone 2b has been described, where the new C10 bis(chloroallylic) sulfone 11 proved to be a useful substitute for the C10 bis(chloroallylic) sulfide 3, which did not require the problematic chemoselective sulfur oxidation in a conjugated polyene. [source] Polymer-Mediated Dispersion of Gold Nanoparticles: Using Supramolecular Moieties on the PeripheryADVANCED MATERIALS, Issue 38-39 2009Adam D. Celiz A novel method of dispersing gold nanoparticles (Au NPs) is described. Thiol-terminated ureido-pyrimidinone (UPy)-functionalized polymers are attached to Au NPs to create a polymeric shell with quadruple hydrogen-bonding units on the periphery. By increasing the amount of UPy loading on the Au NPs, self-assembly into aggregates is observed with both 1H NMR spectroscopy and transmission electron microscopy. [source] Synthesis and Catalytic Applications of ansa Compounds with Cycloalkyl Moieties as Bridging Units: A Comparative StudyADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 2-3 2010Alejandro Capapé Abstract The molybdenum and tungsten compounds (Mo{,5 -C5H4[CH(CH2)n]-,1 -CH}(CO)3) and (W{,5 -C5H4[CH(CH2)3]-,1 -CH}(CO)3) (2a, 3an=3; 2b, 3bn=4; 2c, 3cn=5; 2d, 3dn=6) were synthesized by reacting the spiro-bicyclic compounds 1a,d with the complex [M(CO)3(tach)] (M=molybdenum, tungsten; tach=1,3,5-trimethylhexahydro-1,3,5-triazine). NMR spectroscopy, as well as X-ray diffraction studies, confirm the formation of an intramolecular ansa bridge. The complexes display a good stability in the solid state (stable up to 180,°C under air, as determined by thermogravimetric studies) and are highly active catalysts at room temperature (molybdenum compounds) or above (tungsten compounds) in olefin epoxidation. In the case of cyclooctene as substrate, TOFs up to ca. 11800,h,1 are obtained. Moreover, most of the catalysts described here display a high selectivity in the epoxidation of cis - and trans -stilbene. In addition, the novel complexes were compared with previously synthesized related compounds, at least matching their catalytic performances. [source] Combining Fluorous and Triazole Moieties for the Tagging of Chiral Azabis(oxazoline) LigandsADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 11-12 2009Ramesh Rasappan Abstract New fluorous-tagged azabis(oxazoline) ligands were prepared using the copper-catalyzed azide-alkyne cycloaddition as ligation method. The resulting ligands were tested in copper-catalyzed asymmetric benzoylations (up to 99% ee), nitroaldol (up to 90% ee), and Michael reactions (up to 82% ee). The combination of unpolar fluorinated alkyl chains and polar triazole moieties imposes properties that are beneficial for the catalysts with respect to recyclability and selectivity. The scope and limitation of this strategy in comparison to analogous catalysts immobilized on methoxypolyethylene glycol (MeOPEG) or polystyrene is discussed. Moreover, this study shows that the choice of solvent for a given reaction is crucial to arrive at highly recyclable bis(oxazoline) catalysts. [source] Stable and Catalytically Highly Active ansa Compounds with Cycloalkyl Moieties as Bridging UnitsADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 1-2 2009Alejandro Capapé Abstract The complexes Mo{,5 -C5H4[CH(CH2)3]-,1 -CH}(CO)3 (2a) and W{,5 -C5H4[CH(CH2)3]-,1 -CH}CO)3 (2b) were synthesized by reacting spiro[4.2]bicyclo[4.1]deca-6,8-diene (1) with the tri(acetonitrile)tri(carbonyl)metal complexes M(CO)3(CH3CN)3 (M=Mo, W). Thermogravimetric (TGA) measurements confirm that the complexes are stable up to 140,°C in air in the solid state. The complexes 2a and 2b are very active catalysts at room temperature for the epoxidation of cyclooctene with tert -butyl hydroperoxide (TBHP) as oxidant, reaching TOFs of up to 3650,h,1. Complex 2a achieves a quantitative product yield without formation of any by-products within 1.5,h, outperforming previously published ansa compounds and performing on par with the cyclopentadienyltri(carbonyl)(halo)- or (alkyl)molybdenum compelxes CpMo(CO)3R (R=Hal, Me, Et). [source] Synthesis and Electro-Optical Properties of a Novel DNA,Lipid Complex Carrying Carbazole MoietiesMACROMOLECULAR CHEMISTRY AND PHYSICS, Issue 3 2010Jinqing Qu Abstract A novel DNA,lipid complex carrying carbazole (Cz) moieties was prepared by substituting the sodium counter cation with cationic lipid, namely lipid(2Cz), in which the actual mole ratio of phosphate to lipid was 1:1.05. The DNA,lipid(2Cz) complex was soluble in common organic solvents including CHCl3, CH2Cl2, methanol, and ethanol, while insoluble in THF, toluene, and water. CD spectroscopy revealed that the DNA,lipid complex took a predominantly double helical structure in methanol and that the helical structure was fairly stable against heating. A solution of the DNA,lipid(2Cz) complex emitted fluorescence in 40.0% quantum yield, which was lower than that of the corresponding lipid(2Cz) (76%). The cyclic voltammograms of the complex indicated that the oxidation potential of DNA,lipid(2Cz) was 0.65,V. The onset temperature of weight loss of the DNA,lipid complex is 230,°C according to TGA in air. [source] Multi-Responsive Supramolecular Double Hydrophilic Diblock Copolymer Driven by Host-Guest Inclusion Complexation between , -Cyclodextrin and Adamantyl MoietiesMACROMOLECULAR CHEMISTRY AND PHYSICS, Issue 24 2009Hao Liu Abstract Well-defined , -CD-terminated poly(N -isopropylacrylamide) (, - CD -PNIPAM) was synthesized via a combination of atom transfer radical polymerization (ATRP) and click chemistry. Moreover, adamantyl-terminated poly(2-(diethylamino)ethyl methacrylate) (Ad -PDEA) was synthesized by ATRP using an adamantane-containing initiator. Host-guest inclusion complexation between ,-CD and adamantyl moieties drives the formation of supramolecular double hydrophilic block copolymers (DHBC) from , -CD-PNIPAM and Ad -PDEA. The obtained supramolecular PNIPAM- b -PDEA diblock copolymer exhibits intriguing multi-responsive and reversible micelle-to-vesicle transition behavior in aqueous solution by dually playing with solution pH and temperatures. [source] Synthesis and Photoresponsive Properties of Optically Active Methacrylic Polymers Bearing Side-Chain Azocarbazole MoietiesMACROMOLECULAR CHEMISTRY AND PHYSICS, Issue 1 2009Luigi Angiolini Abstract The synthesis of a novel optically active methacrylic monomer containing in the side chain the (S)-3-hydroxy- N -phenyl pyrrolidine ring linked to a 4-cyanophenylazocarbazole moiety [(S)- MCAPP - C] and of the analogous achiral monomer (MCAPE-C) is described. Both the monomers have been radically polymerized to produce the corresponding homopolymers as well as the copolymer at 50% molar composition. The photoinduction of birefringence has been assessed on thin films of the polymeric materials in order to evaluate their behavior as materials for optical data storage. Surface relief gratings (SRG) can also be inscribed over the material. The results are interpreted in terms of different cooperative performance and conformational stiffness of the chromophoric co-units in the polymeric derivatives. [source] Structures and Chiroptical Properties of Thermoresponsive Block Copolymers Containing L -Proline MoietiesMACROMOLECULAR CHEMISTRY AND PHYSICS, Issue 17 2007Hideharu Mori Abstract Amino acid-based block copolymers containing poly(A-Pro-OMe) have been synthesized by RAFT polymerization using the dithioester-terminated poly(DMA) as a macro-CTA. An amphiphilic block copolymer composed of polystyrene as a hydrophobic segment and poly(A-Pro-OMe) as a hydrophilic segment was also prepared using polystyrene as the macro-CTA. The chiroptical properties of the block copolymer, poly(DMA)- block -poly(A-Pro-OMe), was evaluated by specific rotation, CD, and UV-vis spectroscopy. The assembled structure of the block copolymer on a mica surface was characterized by SFM. Thermally induced phase separations of the random and block copolymers were also studied in aqueous solution. [source] Optically Active Methacrylic Copolymers Bearing Side-Chain Bisazoaromatic and Bulky Achiral MoietiesMACROMOLECULAR CHEMISTRY AND PHYSICS, Issue 14 2007Luigi Angiolini Abstract The synthesis of two novel series of optically active methacrylic copolymers that contain a side-chain chiral moiety linked to a photochromic bisazoaromatic chromophore has been carried out by radical copolymerization of the monomer (S)-3-methacryloyloxy-1-[4,-phenylazo-(4-azobenzene)]pyrrolidine with highly sterically hindered monomers such as tert- butyl methacrylate or triphenylmethyl methacrylate with the aim to investigate the effect on the optical activity of the resulting derivatives. The copolymeric products have been fully characterized and their spectroscopic and thermal properties compared to those of the related optically active homopolymer and the copolymers with methyl methacrylate, previously reported. The optical activity displayed by the polymers is discussed in terms of extent of chiral conformations assumed by the macromolecules as a consequence of the insertion of co-monomers capable of affecting the dipole-dipole interactions that occur in these derivatives between the side-chain bisazoaromatic chromophores disposed according to a mutual chiral arrangement. [source] Electrospun Nanofibers Modified with Phospholipid Moieties for Enzyme ImmobilizationMACROMOLECULAR RAPID COMMUNICATIONS, Issue 16 2006Xiao-Jun Huang Abstract Summary: PANCMPCs containing phospholipid side moieties were electrospun into nanofibers with a mean diameter of 90 nm. Field emission SEM was used to characterize the morphologies of the nanofibers. These phospholipid-modified nanofibers were explored as supports for enzyme immobilization due to the characteristics of excellent biocompatibility, high surface/volume ratio, and porosity, which were beneficial to the catalytic efficiency and activity of immobilized enzymes. Lipase from Candida rugosa was immobilized on these nanofibers by adsorption. Preliminary results indicated that the properties of the immobilized lipase on these phospholipid-modified nanofibers were greatly promising. Schematic representation of the structure and electrostatic properties of phospholipid-modified nanofibers. [source] Light-Induced Demixing of Hole or Electron Transporting MoietiesMACROMOLECULAR RAPID COMMUNICATIONS, Issue 20 2004Marc Behl Abstract Summary: This paper describes the synthesis of two triphenylamine monomers (hole conducting) and one triazine monomer (electron conducting) which differ in their copolymerization parameters because of their styrene and vinyl ester nature. A blend of triphenylamine monomer and poly(ethylene glycol) and mixtures of both types of monomers (triphenylamine and triazine) were illuminated through a line mask, creating laterally modulated radicals, thus leading to lateral demixing. The experiments with mixtures of triphenylamine and triazine monomers show that the concentration of p- or n-type polymers can be modulated laterally in a controlled way. AFM measurement of line pattern formed by illuminating a mixture of monomer 2 and 3 showing the height difference between illuminated and non-illuminated areas. [source] Synthesis and Antioxidant Activity of New Pyridines Containing Gallate MoietiesARCHIV DER PHARMAZIE, Issue 9 2010Nora M. A. El-Ebiary Abstract Pyridines containing the galloyl moiety have been prepared utilizing 4-acetyl pyrogallol. In addition, fused pyridines were synthesized from the obtained pyridines via further chemical transformations. The results indicated that compound 4a showed stronger DPPH scavenging activity than the other compounds, and the scavenging effect decreased in the following order 4a,>,t-BHQ,>,2a,>,2b,>,3a,>,3b,>,4b. Accordingly, other antioxidant assays were conducted for 4a. The results suggested that compound 4a could be a good antioxidant candidate. The absence of mortality of rats receiving 5000,mg/kg body weight of 4a as single oral dose may indicate that it could be a safe antioxidant and may be used for further studies. [source] Novel l,-Methylcarbapenems Having Cyclic Sulfonamide Moieties: Synthesis and Evaluation of in-vitro Biological Activity , Part IIARCHIV DER PHARMAZIE, Issue 9 2009Seong Jong Kim Abstract The synthesis of a new series of 1,-methylcarbapenems having cyclic sulfonamide moieties is described. Their in-vitro antibacterial activities against both Gram-positive and Gram-negative bacteria were tested and the effect of a substituent on the pyrrolidine ring was investigated. One particular compound IIIe having a [1,2,5]thiadiazolidin 1,1-dioxide moiety showed the most potent antibacterial activity. [source] Synthesis and Proinflammatory Properties of Muramyl Tripeptides Containing Lysine and Diaminopimelic Acid MoietiesCHEMBIOCHEM, Issue 11 2005Abhijit Roychowdhury Dr. Abstract The unusual amino acid diaminopimelic acid (DAP) was prepared by cross metathesis of appropriately protected vinyl glycine and allyl glycine derivatives. Catalytic hydrogenation of the cross-coupling product resulted in reduction of the double bond and the removal of protecting groups. The resulting compounds were appropriately protected for the polymer-supported and solution-phase synthesis of muramyl tripeptides 2 and 3, which differ in the amidation of the ,-carboxylic acids of the isoglutamine and DAP moieties. Muramyl dipeptide (1, MDP), the DAP-containing muramyl tripeptide 3, and the lysine-containing muramyl tripeptides 4 and 5 induced TNF-, gene expression without TNF-, protein production in a human monocytic cell line. The observed block in translation could be removed by co-incubation with LPS, resulting in an apparent synergistic effect. Compound 2 did not induce TNF-, gene expression, neither did it exhibit a synergistic effect with LPS; this indicates that amidation of the ,-carboxylic acids of the isoglutamine and DAP moieties results in a loss of biological activity. It is proposed that amidation of ,-carboxylic acids is a strategy that may be used by pathogens to avoid detection by the innate immune system. Furthermore, the pattern recognition receptors Nod1 and Nod2 have been implicated in the possible induction of a synergistic effect of muropeptides with LPS. [source] Large-Scale In Vivo Synthesis of the Carbohydrate Moieties of Gangliosides GM1 and GM2 by Metabolically Engineered Escherichia coliCHEMBIOCHEM, Issue 5 2003Tatiana Antoine Abstract Two metabolically engineered Escherichia coli strains have been constructed to produce the carbohydrate moieties of gangliosides GM2 (GalNAc, -4(NeuAc, -3)Gal, -4Glc; Gal=galactose, Glc=glucose, Ac=acetyl) and GM1 (Gal, -3GalNAc, -4(NeuAc, -3)Gal, -4Glc. The GM2 oligosaccharide-producing strain TA02 was devoid of both , -galactosidase and sialic acid aldolase activities and overexpressed the genes for CMP-NeuAc synthase (CMP=cytidine monophosphate), , -2,3-sialyltransferase, UDP-GlcNAc (UDP=uridine diphosphate) C4 epimerase, and , -1,4-GalNAc transferase. When this strain was cultivated on glycerol, exogenously added lactose and sialic acid were shown to be actively internalized into the cytoplasm and converted into GM2 oligosaccharide. The in vivo synthesis of GM1 oligosaccharide was achieved by taking a similar approach but using strain TA05, which additionally overexpressed the gene for , -1,3-galactosyltransferase. In high-cell-density cultures, the production yields for the GM2 and GM1 oligosaccharides were 1.25 g,L,1and 0.89 g,L,1, respectively. [source] ChemInform Abstract: Copper-Catalyzed Activation of Disulfides as a Key Step in the Synthesis of Benzothiazole Moieties.CHEMINFORM, Issue 40 2010Jakub Hyvl Abstract The synthesis of benzothiazoles under mild conditions is described. [source] ChemInform Abstract: Synthesis and Microwave-Assisted Catalytic Activity of Novel Bis-Benzimidazole Salts Bearing Furfuryl and Thenyl Moieties in Heck and Suzuki Cross-Coupling Reactions.CHEMINFORM, Issue 38 2010Uelkue Yilmaz Abstract Bis(benzimidazolium) dichlorides (I) and (II) are synthesized and examined as ligands for each aryl halogenide (III) in both the Suzuki and the Heck reaction under optimized conditions. [source] ChemInform Abstract: Synthesis and Biological Activities of Some Novel Triazoloquinazolines and Triazinoquinazolines Containing Benzenesulfonamide Moieties.CHEMINFORM, Issue 33 2010Mostafa M. Ghorab Abstract New compounds (IVb), (VIIIc) and (X) exhibit good antipyretic activities compared to the reference drug acetaminophen, whereas compounds (VIb), (VIIIb) and (XIV) show promising antiinflammatory activities compared to indomethacin. [source] ChemInform Abstract: Synthesis and Properties of Novel Biologically Interesting Polycyclic 1,3,4-Oxadiazoles Containing Acridine/Acridone Moieties.CHEMINFORM, Issue 28 2009Zdenka Froehlichova 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 Synthesis of Internal Conjugated (Z)-Enynyltrimethylsilanes Possessing Aryl, Cycloalkenyl, (E)- or (Z)-Alk-1-enyl Moieties on the sp Carbon Atom via Two Types of Cross-Coupling Reaction.CHEMINFORM, Issue 13 2009Masayuki Hoshi 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: Synthesis and Antibacterial Activities of Novel Oxazolidinones Having Cyclic Sulfonamide Moieties.CHEMINFORM, Issue 10 2009Seoung Jong Kim 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: Synthesis of Novel Spiro Compounds Using Anthrone and Pyrazole-5-thione Moieties: A Michael Addition Approach.CHEMINFORM, Issue 8 2008Madhukar S. Chande 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] | ||||||||||||||||||||||||||||||||||||||||||||||