bluuebunny/crossref_metadata_2025_split huggingface dataset:
Morphology Effect of CeO2 Support in the Preparation, Metal–Support Interaction, and Catalytic Performance of Pt/CeO2 Catalysts
Authors: Gao Yuxian , Wang Wendong , Chang Sujie , Huang Weixin 
Published: October 2013

AbstractPt/CeO2 catalysts with various Pt loadings were prepared by a conventional incipient wetness impregnation method that employed CeO2 cubes (c‐CeO2), rods (r‐CeO2), and octahedra (o‐CeO2) as the support and Pt(NH3)4(NO3)2 as the metal precursor. Their structures and catalytic activities in CO oxidation in excess O2 and the preferential oxidation of CO in a H2‐rich gas (CO‐PROX) were studied, and strong morphology effects were observed. The impregnated Pt precursor interacts more strongly with CeO2 rods and cubes than with CeO2 octahedra, and the reduction/decomposition of the Pt precursor impregnated on CeO2 octahedra is easier than that on CeO2 rods and cubes. With the same Pt loading, the Pt/o‐CeO2 catalyst contains the largest fraction of metallic Pt, whereas the Pt/c‐CeO2 catalyst contains the largest fraction of Pt2+ species. The reducibility of pure CeO2 and CeO2 in the Pt/CeO2 catalysts follows the order r‐CeO2>c‐CeO2>o‐CeO2, and the reducibility of CeO2 depends on the Pt loading for the Pt/c‐CeO2 catalysts but not much for the Pt/r‐CeO2 and Pt/o‐CeO2 catalysts. The catalytic performance of Pt/CeO2 catalysts in both CO oxidation and the CO‐PROX reaction follows the order Pt/r‐CeO2>Pt/c‐CeO2> Pt/o‐CeO2. The Pt0‐CeO2 ensemble is more active than the Pt2+‐CeO2 ensemble in the catalysis of CO oxidation in excess O2. H2‐assisted CO oxidation catalyzed by the Pt/CeO2 catalysts was observed in the CO‐PROX reaction, and the Pt2+ species and CeO2 with a large concentration of oxygen vacancies constitute the active structure of the Pt/CeO2 catalyst for the CO‐PROX reaction. The effect of the morphology of the CeO2 support in the preparation, metal–support interaction, and catalytic performance of Pt/CeO2 catalysts can be correlated the exposed crystal planes and surface composition/structure of the CeO2 support with different morphologies. These results not only demonstrate that the structure and catalytic performance of oxide‐supported catalysts can be tuned by controlling the morphology of the oxide support but also deepens the fundamental understanding of CO oxidation reactions catalyzed by Pt/CeO2 catalysts.
Fullerene “Superhalogen” Radicals: the Substituent Effect on Electronic Properties of 1,7,11,24,27‐C60X5
Authors: Clikeman Tyler T. , Deng S. H. M. , Avdoshenko Stanislav , Wang Xue‐Bin , Popov Alexey A. , Strauss Steven H. , Boltalina Olga V. 
Published: October 2013

AbstractHexasubstituted fullerenes with the skew pentagonal pyramid (SPP) addition pattern are predominantly formed in many types of reactions and represent important and versatile building blocks for supramolecular chemistry, biomedical and optoelectronic applications. Regioselective synthesis and characterization of the new SPP derivative, C60(CF3)4(CN)H, in this work led to the experimental identification of the new family of “superhalogen fullerene radicals”, species with the gas‐phase electron affinity higher than that of the most electronegative halogens, F and Cl. Low‐temperature photoelectron spectroscopy and DFT studies of different C60X5 radicals reveal a profound effect of X groups on their electron affinities (EA), which vary from 2.76 eV (X=CH3) to 4.47 eV (X=CN). The measured gas‐phase EA of the newly synthesized C60(CF3)4CN equals 4.28 (1) eV, which is about 1 eV higher than the EA of Cl atom. An observed remarkable stability of C60(CF3)4CN− in solution under ambient conditions opens new venues for design of air‐stable molecular complexes and salts for supramolecular structures of electroactive functional materials.
Ranking Relative Hydrogen‐Bond Strengths in Hydroxybenzoic Acids for Crystal‐Engineering Purposes
Authors: Aakeröy Christer B. , Epa Kanishka , Forbes Safiyyah , Schultheiss Nathan , Desper John 
Published: October 2013

AbstractSystematic co‐crystallizations resulting in a total of six new crystal structures involving either 3‐hydroxy‐ or 4‐hydroxybenzoic acid, complemented by calculated molecular electrostatic potential surfaces and existing structural data, have shown that in a competitive molecular recognition situation, the OH moiety is a more effective hydrogen‐bond donor than the COOH moiety which, in turn, highlights that electrostatic charge can offer more useful guidance than acidity for predicting competitive hydrogen‐bond preferences.
Cyclometalated Ruthenium(II) Complexes Featuring Tridentate Click‐Derived Ligands for Dye‐Sensitized Solar Cell Applications
Authors: Schulze Benjamin , Brown Douglas G. , Robson Kiyoshi C. D. , Friebe Christian , Jäger Michael , Birckner Eckhard , Berlinguette Curtis P. , Schubert Ulrich S. 
Published: October 2013

AbstractA series of heteroleptic bis(tridentate) RuII complexes featuring N^C^N‐cyclometalating ligands is presented. The 1,2,3‐triazole‐containing tridentate ligands are readily functionalized with hydrophobic side chains by means of click chemistry and the corresponding cyclometalated RuII complexes are easily synthesized. The performance of these thiocyanate‐free complexes in a dye‐sensitized solar cell was tested and a power conversion efficiency (PCE) of up to 4.0 % (Jsc=8.1 mA cm−2, Voc=0.66 V, FF=0.70) was achieved, while the black dye ((NBu4)3[Ru(Htctpy)(NCS)3]; Htctpy=2,2′:6′,2′′‐terpyridine‐4′‐carboxylic acid‐4,4′′‐dicarboxylate) showed 5.2 % (Jsc=10.7 mA cm−2, Voc=0.69 V, FF=0.69) under comparable conditions. When co‐adsorbed with chenodeoxycholic acid, the PCE of the best cyclometalated dye could be improved to 4.5 % (Jsc=9.4 mA cm−2, Voc=0.65 V, FF=0.70). The PCEs correlate well with the light‐harvesting capabilities of the dyes, while a comparable incident photon‐to‐current efficiency was achieved with the cyclometalated dye and the black dye. Regeneration appeared to be efficient in the parent dye, despite the high energy of the highest occupied molecular orbital. The device performance was investigated in more detail by electrochemical impedance spectroscopy. Ultimately, a promising RuII sensitizer platform is presented that features a highly functionalizable “click”‐derived cyclometalating ligand.
Part I: The Development of the Catalytic Wittig Reaction
Authors: O'Brien Christopher J. , Nixon Zachary S. , Holohan Andrew J. , Kunkel Stephen R. , Tellez Jennifer L. , Doonan Bryan J. , Coyle Emma E. , Lavigne Florie , Kang Lauren J. , Przeworski Katherine C. 
Published: October 2013

AbstractWe have developed the first catalytic (in phosphane) Wittig reaction (CWR). The utilization of an organosilane was pivotal for success as it allowed for the chemoselective reduction of a phosphane oxide. Protocol optimization evaluated the phosphane oxide precatalyst structure, loading, organosilane, temperature, solvent, and base. These studies demonstrated that to maintain viable catalytic performance it was necessary to employ cyclic phosphane oxide precatalysts of type1. Initial substrate studies utilized sodium carbonate as a base, and further experimentation identifiedN,N‐diisopropylethylamine (DIPEA) as a soluble alternative. The use of DIPEA improved the ease of use, broadened the substrate scope, and decreased the precatalyst loading. The optimized protocols were compatible with alkyl, aryl, and heterocyclic (furyl, indolyl, pyridyl, pyrrolyl, and thienyl) aldehydes to produce both di‐ and trisubstituted olefins in moderate‐to‐high yields (60–96 %) by using a precatalyst loading of 4–10 mol %. KineticE/Zselectivity was generally 66:34; completeEselectivity for disubstituted α,β‐unsaturated products was achieved through a phosphane‐mediated isomerization event. The CWR was applied to the synthesis of54, a known precursor to the anti‐Alzheimer drug donepezil hydrochloride, on a multigram scale (12.2 g, 74 % yield). In addition, to our knowledge, the described CWR is the only transition‐/heavy‐metal‐free catalytic olefination process, excluding proton‐catalyzed elimination reactions.
Hydrogen Generation by Water Reduction with [Cp*2Ti(OTf)]: Identifying Elemental Mechanistic Steps by Combined In Situ FTIR and In Situ EPR Spectroscopy Supported by DFT Calculations
Authors: Hollmann Dirk , Grabow Kathleen , Jiao Haijun , Kessler Monty , Spannenberg Anke , Beweries Torsten , Bentrup Ursula , Brückner Angelika 
Published: October 2013

AbstractA detailed mechanism of hydrogen production by reduction of water with decamethyltitanocene triflate [Cp*2TiIII(OTf)] has been derived for the first time, based on a comprehensive in situ spectroscopic study including EPR and ATR‐FTIR spectroscopy supported by DFT calculations. It is demonstrated that two H2O molecules coordinate to [Cp*2TiIII(OTf)] subsequently forming [Cp2*TiIII(H2O)(OTf)] and [Cp*TiIII(H2O)2(OTf)]. Triflate stabilizes the water ligands by hydrogen bonding. Liberation of hydrogen proceeds only from the diaqua complex [Cp*TiIII(H2O)2(OTf)] and involves, most probably, abstraction and recombination of two H atoms from two molecules of [Cp*TiIII(H2O)2(OTf)] in close vicinity, which is driven by the formation of a strong covalent TiOH bond in the resulting final product [Cp*2TiIV(OTf)(OH)].
Tailor‐Made Hole‐Conducting Coadsorbents for Highly Efficient Organic Dye‐Sensitized Solar Cells
Authors: Choi In Taek , Ju Myung Jong , Song Sang Hyun , Kim Sang Gyun , Cho Dae Won , Im Chan , Kim Hwan Kyu 
Published: October 2013

AbstractThe Y‐shaped, low molecular mass, hole‐conductor (HC), acidic coadsorbents 4‐{3,7‐bis[4‐(2‐ethylhexyloxy)phenyl]‐10H‐phenothiazin‐10‐yl}benzoic acid (PTZ1) and 4‐{3,7‐bis[4‐(2‐ethylhexyloxy)phenyl]‐10H‐phenothiazin‐10‐yl}biphenyl‐4‐carboxylic acid (PTZ2) were developed. Owing to their tuned and negative‐shifted HOMO levels (vs. NHE), they were used as HC coadsorbents in dye‐sensitized solar cells (DSSCs) to improve cell performance through desired cascade‐type hole‐transfer processes. Their detailed functions as HC coadsorbents in DSSCs were investigated to obtain evidence for the desired cascade‐type hole‐transfer processes. They have multiple functions, such as preventing π–π stacking of dye molecules, harvesting light of shorter wavelengths, and faster dye regeneration. By using PTZ2 as the tailor‐made HC coadsorbent on the TiO2 surface with the organic dye NKX2677, an extremely high conversion efficiency of 8.95 % was achieved under 100 mW cm−2 AM 1.5G simulated light (short‐circuit current JSC=16.56 mA cm−2, open‐circuit voltage VOC=740 mV, and fill factor of 73 %). Moreover, JSC was increased by 13 %, VOC by 27 % and power‐conversion efficiency by 49 % in comparison to an NKX2677‐based DSSC without an HC coadsorbent. This is due to the HC coadsorbent having a HOMO energy level well matched to that of the NKX‐2677 dye to induce the desired cascade‐type hole‐transfer processes, which are associated with a slower charge recombination, fast dye regeneration, effective screening of liquid electrolytes, and an induced negative shift of the quasi‐Fermi level of the electrode. Thus, this new class of Y‐shaped, low molecular weight, organic, HC coadsorbents based on phenothiazine carboxylic acid derivatives hold promise for highly efficient organic DSSCs.
Mesoporous Silica and Organosilica Films Templated by Nanocrystalline Chitin
Authors: Nguyen Thanh‐Dinh , Shopsowitz Kevin E. , MacLachlan Mark J. 
Published: October 2013

AbstractLiquid crystalline phases can be used to impart order into inorganic solids, creating materials that mimic natural architectures. Herein, mesoporous silica and organosilica films with layered structures and high surface areas have been templated by nanocrystalline chitin. Aqueous suspensions of spindle‐shaped chitin nanocrystals were prepared by sequential deacetylation and hydrolysis of chitin fibrils isolated from king crab shells. The nanocrystalline chitin self‐assembles into a nematic liquid‐crystalline phase that has been used to template silica and organosilica composites. Removal of the chitin template by either calcination or sulfuric‐acid‐catalyzed hydrolysis gave mesoporous silica and ethylene‐bridged organosilica films. The large, crack‐free mesoporous films have layered structures with features that originate from the nematic organization of the nanocrystalline chitin.
Multivalency in the Gas Phase: H/D Exchange Reactions Unravel the Dynamic “Rock ’n’ Roll” Motion in Dendrimer–Dendrimer Complexes
Authors: Qi Zhenhui , Schlaich Christoph , Schalley Christoph A. 
Published: October 2013

AbstractNoncovalent dendrimer–dendrimer complexes were successfully ionized by electrospray ionization of partly protonated amino‐terminated polypropylene amine (POPAM) and POPAM dendrimers fully functionalized with benzo[21]crown‐7 on all branches. Hydrogen/deuterium exchange (HDX) experiments conducted on dendrimer–dendrimer complexes in the high vacuum of a mass spectrometer give rise to a complete exchange of all labile NH hydrogen atoms. As crown ethers represent noncovalent protective groups against HDX reactions on the ammonium group to which they are coordinated, this result provides evidence for a very dynamic binding situation: each crown is mobile enough to move from one ammonium binding site to another. Schematically, one might compare this motion with two rock ’n’ roll dancers that swirl around each other without completely losing all contact at any time. Although the multivalent attachment certainly increases the overall affinity, the “microdynamics” of individual site binding and dissociation remains fast.
Opening or Closing the Lock? When Reactivity Is the Key to Biological Activity
Authors: Al‐Rifai Nafisah , Rücker Hannelore , Amslinger Sabine 
Published: October 2013

AbstractThiol‐mediated processes play a key role to induce or inhibit inflammation proteins. Tailoring the reactivity of electrophiles can enhance the selectivity to address only certain surface cysteines. Fourteen 2′,3,4,4′‐tetramethoxychalcones with different α‐X substituents (X=H, F, Cl, Br, I, CN, Me, p‐NO2‐C6H4, Ph, p‐OMe‐C6H4, NO2, CF3, COOEt, COOH) were synthesized, containing the potentially electrophilic α,β‐unsaturated carbonyl unit. The assessment of their reactivity as electrophiles in thia‐Michael additions with cysteamine shows a change in the reactivity of more than six orders of magnitude. Moreover, a clear correlation between their reactivity and an influence on the inflammation proteins heme oxygenase‐1 (HO‐1) and the inducible NO synthase (iNOS) is demonstrated. As the biologically most active compound, the α‐CF3‐chalcone is shown to inhibit the NO production in RAW264.7 mouse macrophages in the nanomolar range.
A Highly K+‐Selective Phenylaza‐[18]crown‐6‐Lariat‐Ether‐Based Fluoroionophore and Its Application in the Sensing of K+ Ions with an Optical Sensor Film and in Cells
Authors: Ast Sandra , Schwarze Thomas , Müller Holger , Sukhanov Aleksey , Michaelis Stefanie , Wegener Joachim , Wolfbeis Otto S. , Körzdörfer Thomas , Dürkop Axel , Holdt Hans‐Jürgen 
Published: October 2013

AbstractHerein, we report the synthesis of two phenylaza‐[18]crown‐6 lariat ethers with a coumarin fluorophore (1 and 2) and we reveal that compound 1 is an excellent probe for K+ ions under simulated physiological conditions. The presence of a 2‐methoxyethoxy lariat group at the ortho position of the anilino moiety is crucial to the substantially increased stability of compounds 1 and 2 over their lariat‐free phenylaza‐[18]crown‐6 ether analogues. Probe 1 shows a high K+/Na+ selectivity and a 2.5‐fold fluorescence enhancement was observed in the presence of 100 mM K+ ions. A fluorescent membrane sensor, which was prepared by incorporating probe 1 into a hydrogel, showed a fully reversible response, a response time of 150 s, and a signal change of 7.8 % per 1 mM K+ within the range 1–10 mM K+. The membrane was easily fabricated (only a single sensing layer on a solid polyester support), yet no leaching was observed. Moreover, compound 1 rapidly permeated into cells, was cytocompatible, and was suitable for the fluorescent imaging of K+ ions on both the extracellular and intracellular levels.
ChemInform Abstract: Ammonium Diphosphitoindate(III).
Authors: Hamchaoui Farida , Rebbah Houria , Le Fur Eric 
Published: October 2013

AbstractNH4[In(HPO3)2] is obtained by mild hydrothermal reaction of InCl3, H3PO3, and (NH4)2CO3 in aqueous solution (autoclave, 453 K, 3 d).
ChemInform Abstract: A Layered Polymorph of Rare Earth Hydroxides.
Authors: Lee Byung‐II , Jeong Heejin , Bae Jung‐Soo , Byeon Song‐Ho 
Published: October 2013

AbstractPure lanthanoid hydroxides Ln(OH)3·nH2O (Ln: Sm, Eu, Gd, Tb, Dy, Er, Y) with a layered structure are synthesized by reacting Ln2(OH)5Cl in aq.
ChemInform Abstract: Cobalt‐Doped Bi26Mo10O69: Crystal Structure and Conductivity.
Authors: Mikhailovskaya Z. A. , Buyanova E. S. , Petrova S. A. , Morozova M. V. , Zhukovskiy V. M. , Zakharov R. G. , Tarakina N. V. , Berger I. F. 
Published: October 2013

AbstractThe complex oxides Bi1‐xCox [Bi12O14] Mo5O20.+‐.δ (x = 0.1—1) and Bi[Bi12O14] Mo5‐yCoyO20.+‐.δ (y = 0.2, 0.4) are synthesized by solid state reactions of stoichiometric mixtures of Bi2O3, MoO3, and Co3O4 (alumina crucible, 673—1123 K).
ChemInform Abstract: Efficient Oxidative Chlorination of Aromatics on Saturated Sodium Chloride Solution.
Authors: Gu Liuqun , Lu Ting , Zhang Mingyun , Tou Lijuan , Zhang Yugen 
Published: October 2013

AbstractAn efficient metal‐free system using saturated aqueous NaCl/NH4Cl solution as chlorine source and potassium persulfate as oxidant for the chlorination of various aromatic compounds including deactivated ones is developed.
ChemInform Abstract: anti‐Bredt N‐Heterocyclic Carbene: An Efficient Ligand for the Gold(I)‐Catalyzed Hydroamination of Terminal Alkynes with Parent Hydrazine.
Authors: Lopez‐Gomez Maria J. , Martin David , Bertrand Guy 
Published: October 2013

AbstractThe superior catalytic activity of the newly synthesized NHC‐catalyst is attributed to steric factors.
ChemInform Abstract: Rauhut—Currier Reaction of Nitroalkenes with Vinyl Sulfones.
Authors: Kumar Rahul , Kumar Tarun , Mobin Shaikh M. , Nambothiri Irishi N. N. 
Published: October 2013

AbstractThe title reaction with the vinyl bis‐sulfone (I) allows a new and efficient access to sulfonylated nitroalkenes of type (III).
ChemInform Abstract: Pd‐Catalyzed One‐Pot Synthesis of Polysubstituted Acrylamidines from Isocyanides, Diazo Compounds, and Imines.
Authors: Yan Xu , Liao Jinxi , Lu Yongzhi , Liu Jinsong , Zeng Youlin , Cai Qian 
Published: October 2013

AbstractThe title multicomponent reaction proceeds through an unpredicted ring‐opening process of the ketenimine‐imine [2 + 2] intermediate.
ChemInform Abstract: Rhodium‐Catalyzed Cyanide‐Free Cyanation of Aryl Halide by Using Formamide as a Cyanide Source.
Authors: Khemnar Ashok B. , Sawant Dinesh N. , Bhanage Bhalchandra M. 
Published: October 2013

AbstractThe method is particularly suitable for aryl iodides bearing electron‐donating groups.
ChemInform Abstract: Cu‐Catalyzed Synthesis of Diaryl Thioethers and S‐Cycles by Reaction of Aryl Iodides with Carbon Disulfide in the Presence of DBU.
Authors: Zhao Peng , Yin Hang , Gao Hongxin , Xi Chanjuan 
Published: October 2013

AbstractThe one‐pot method for the title syntheses uses the cheap and easy to‐handle carbon disulfide under ligand‐free conditions.
ChemInform Abstract: Catalytic Asymmetric Diaziridination.
Authors: Lykke Lennart , Halskov Kim Soeholm , Carlsen Bjoern Dreioe , Chen Victor X. , Joergensen Karl Anker 
Published: October 2013

AbstractThis is the first catalytic enantio‐ and diastereoselective synthesis of diaziridines.
ChemInform Abstract: A Facile Access to 1,3,4‐Trisubstituted Pyrazoles via 1,3‐Dipolar Cycloaddition of 3‐Arylsydnones with α,β‐Unsaturated Ketones
Authors: Chen Fei , Liu Fang‐Ming , Shi Hai , Chen Sen‐Lin 
Published: October 2013

Abstract18 examples
ChemInform Abstract: Synthesis of 4‐Alkynyl‐1,2‐dimethyl‐5‐nitro‐1H‐imidazoles via Microwave‐Assisted Sonogashira Cross‐Coupling Reactions.
Authors: Neilde Kevin , Crozet Maxime D. , Terme Thierry , Vanelle Patrice 
Published: October 2013

AbstractThe process allows an access to various highly functionalized alkynyl derivatives, suitable for further diversification.
ChemInform Abstract: Rhodium(III)‐Catalyzed Direct Selective C(5)—H Oxidative Annulations of 2‐Substituted Imidazoles and Alkynes by Double C—H Activation.
Authors: Huang Ji‐Rong , Zhang Qian‐Ru , Qu Chuan‐Hua , Sun Xun‐Hao , Dong Lin , Chen Ying‐Chun 
Published: October 2013

AbstractAn annulation reaction of diverse imidazoles and pyrroles via Rh(III)‐catalyzed double C—H activations is reported.
ChemInform Abstract: Transformations of gem‐Dichloroarylcyclopropanes in the Reaction with NOCl·2SO3. Synthesis of 3‐Aryl‐5‐chloroisoxazoles.
Authors: Bondarenko O. B. , Gavrilova A. Yu. , Murodov D. S. , Zefirov N. S. , Zyk N. V. 
Published: October 2013

AbstractThe presence of the electron donating groups complicates the reaction.
ChemInform Abstract: Investigation of the Reaction of 3‐Aroylmethylene‐indol‐2‐ones with 2‐Hydrazinobenzothiazole.
Authors: Jain Renuka , Sharma Kanti , Kumar Deepak 
Published: October 2013

AbstractStudies on the title reaction in different media indicate that ionic liquid [bmim]PF6 is a good solvent to achieve spiro[indole‐pyrazole] (III) in excellent yield.
ChemInform Abstract: NHC‐Mediated Enantioselective Formal [4 + 2] Cycloadditions of Alkylarylketenes and β,γ‐Unsaturated α‐Ketocarboxylic Esters and Amides.
Authors: Leckie Stuart M. , Brown T. Bruce , Pryde David , Lebl Tomas , Slawin Alexandra M. Z. , Smith Andrew D. 
Published: October 2013

AbstractChiral N‐heterocyclic carbenes promote the asymmetric formal [4 + 2] cycloaddition of alkylarylketenes with β,γ‐unsaturated α‐ketocarboxylic esters and amides.
ChemInform Abstract: Poly(4‐vinylpyridine): As a Green, Efficient and Commercial Available Basic Catalyst for the Synthesis of Chromene Derivatives.
Authors: Albadi Jalal , Mansournezhad Azam , Darvishi‐Paduk Mohammad 
Published: October 2013

AbstractThis catalyst can be recovered by a simple filtration and reused up to 5 times without any loss of activity.
ChemInform Abstract: Catalytic Synthesis of 2,2′‐Arylmethylenebis(3‐hydroxy‐5,5‐dimethylcyclohex‐2‐en‐1‐ones) and 3,3,6,6‐Tetramethyl‐9‐aryl‐3,4,5,6,7,9‐hexahydro‐1H‐xanthene‐1,8 (2H)‐diones.
Authors: Dikusar E. A. , et al. et al. 
Published: October 2013

AbstractThe conversion of (III) to (IV) is conducted in the presence of sulfa cation exchanger FIBAN K‐1.
ChemInform Abstract: Mild Palladium‐Catalyzed C—H Alkylation Using Potassium Alkyltrifluoroborates in Combination with MnF3.
Authors: Neufeldt Sharon R. , Seigerman Cydney K. , Sanford Melanie S. 
Published: October 2013

AbstractThe reaction proceeds under mild conditions and allows the installation of methyl and primary alkyl substituents into substrates bearing pyridine or amide directing groups.
ChemInform Abstract: Synthesis of Unsymmetrical 2‐Pyridyl Ureas via Selenium‐Catalyzed Oxidative Carbonylation of 2‐Aminopyridine with Aromatic Amines.
Authors: Zhang Xiaopeng , Li Desheng , Ma Xueji , Wang Yan , Zhang Guisheng 
Published: October 2013

AbstractA phosgene‐free synthesis of unsymmetrical 2‐pyridyl ureas (IV) is investigated.
ChemInform Abstract: Reaction of 5‐Aryloxazolidines with Arylmagnesium Bromides as a New Route to N‐Benzyl‐β‐hydroxyphenethylamines as Starting Materials for the Preparation of 4‐Aryl‐1,2,3,4‐tetrahydroisoquinolines.
Authors: Moshkin Vladimir S. , Sosnovskikh Vyacheslav Ya. 
Published: October 2013

AbstractThe two‐step sequence involves ring‐opening of 5‐aryloxazolidines in the presence of arylmagnesium bromides followed by acid‐catalyzed cyclization of the resulting amino alcohols.
ChemInform Abstract: Silver‐Catalyzed Tandem Synthesis of Naphthyridines and Thienopyridines via Three‐Component Reaction.
Authors: Verma Akhilesh K. , Kotla Siva K. Reddy , Choudhary Deepak , Patel Monika , Tiwari Rakesh K. 
Published: October 2013

AbstractThe efficient approach produces a number of heterocyclic systems of biological interest.