bluuebunny/crossref_metadata_2025_split huggingface dataset:
Comparative study of composite membranes from nano‐metal‐oxide‐incorporated polymer electrolytes for direct methanol alkaline membrane fuel cells
Authors: Vinodh Rajangam , Sangeetha Dharmalingam 
Published: August 2012

AbstractA series of six composite membranes was prepared with two polymer electrolytes and three inorganic fillers, namely, silica, titania, and zirconia by a solution casting method. Two polymer electrolytes, that is, anion‐exchange membranes, were prepared from polystyrene‐block‐poly(ethylene‐ran‐butylene)‐block‐polystyrene (PSEBS) and polysulfone by chloromethylation and quaternization. A preliminary characterization of the ionic conductivity, methanol permeability, and selectivity ratio was done for all of the prepared composite membranes to check their suitability to work in direct methanol alkaline membrane fuel cells (DMAMFCs). The DMAMFC performance was analyzed with an in‐house fabricated single cell unit with a 25‐cm2 area. Maximum performance was achieved for the composite membrane quaternized PSEBS/7.5% TiO2 and was 74.5 mW/cm2 at 60°C. For the comparison purposes, a commercially available anion‐exchange membrane (Anion Membrane International‐7001) was also investigated throughout the study. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013
The performance of 7‐hydroxycoumarin‐3‐carbonitrile and 7‐hydroxycoumarin‐3‐carboxylic acid as fluorescent probes for monitoring of cationic photopolymerization processes by FPT
Authors: Ortyl Joanna , Popielarz Roman 
Published: August 2012

AbstractThe applicability of 7‐hydroxycoumarin‐3‐carbonitrile (1) and 7‐hydroxycoumarin‐3‐carboxylic acid (2) as fluorescent probes for monitoring of cationic photopolymerization processes by fluorescence probe technique (FPT) was evaluated in comparison to the response of 7‐diethylamino‐4‐methylcoumarin (C1). Triethylene glycol divinyl ether and diphenyliodonium hexafluorophosphate were used as an example monomer and a cationic photoinitiator, respectively. It has been found that the probe 1 withstands the cationic polymerization conditions and provides correct probe response. The probes 2 and C1 undergo side reactions under the cationic polymerization conditions that make them unusable for monitoring of the polymerization progress at high monomer conversions. The application of 1 as an amine‐free probe for monitoring of curing progress of photocurable coatings cured by cationic photopolymerization is proposed. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013
Numerical simulation on residual wall thickness of tubes with dimensional transitions and curved sections in water‐assisted injection molding
Authors: Yang Jian‐Gen , Zhou Xiong‐Hui 
Published: August 2012

AbstractResidual wall thickness is an important indicator which aims at measuring the quality of water‐assisted injection molding (WAIM) parts. The changes of residual wall thickness around dimensional transitions and curved sections are particularly significant. Free interface of the water/melt two‐phase was tracked by volume of fluid (VOF) method. Computational fluid dynamics (CFD) method was used to simulate the residual wall thickness, and the results corresponded with that of experiments. The results showed that the penetration of water at the long straight sections was steady, and the distribution of the residual wall thickness was uniform. However, there was melt accumulation phenomenon at the dimensional transitions, and the distribution of the residual wall thickness wasn't uniform. Adding fillet at the dimensional transitions could improve the uniformity of the residual wall thickness distribution, and effectively reduce water fingering. Additionally, at the curved sections, the residual wall thickness of the outer wall was always greater than that of the inner wall, and the fluctuations of the residual wall thickness difference were small. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013
Synthesis of hydroxyethylcellulose‐g‐methoxypoly (ethylene glycol) copolymer and its application for protein separation in CE
Authors: Shi Xiaohua , Tan Lin , Xing Jinxing , Cao Fuhu , Chen Lijuan , Luo Zhaofeng , Wang Yanmei 
Published: August 2012

AbstractHydroxyethylcellulose‐g‐methoxypoly (ethylene glycol) (HEC‐g‐PEG) graft copolymers were synthesized through the etherification reaction between the hydroxyl group of hydroxyethylcellulose (HEC) and iodinated methoxypoly (ethylene glycol) (PEG‐I), which was prepared on the basis of two‐step reaction. Fourier transforms infrared spectrum (FTIR), nuclear magnetic resonance (NMR), thermal gravimetric analysis (TGA), differential scanning calorimetry (DSC), and iodide oxidation method were used to prove the success of synthesis of graft copolymer. Furthermore, the comparative studies of electro‐osmotic flow (EOF) and protein separation in bare‐fused silica, HEC and HEC‐g‐PEG‐coated capillary were performed in capillary electrophoresis (CE). The results showed that HEC‐g‐PEG‐coated capillary presented efficient EOF suppression ability and excellent resisting protein adsorption ability. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013
Novel Methods and the Maximum Likelihood Estimation Technique for Estimating Traffic Critical Gap
Authors: Bunker Jonathan M. 
Published: August 2012

SUMMARYMost unsignalised intersection capacity calculation procedures are based on gap acceptance models. Accuracy of critical gap estimation affects accuracy of capacity and delay estimation. Several methods have been published to estimate drivers' sample mean critical gap, the Maximum Likelihood Estimation (MLE) technique regarded as the most accurate. This study assesses three novel methods; Average Central Gap (ACG) method, Strength Weighted Central Gap method (SWCG), and Mode Central Gap method (MCG), against MLE for their fidelity in rendering true sample mean critical gaps. A Monte Carlo event based simulation model was used to draw the maximum rejected gap and accepted gap for each of a sample of 300 drivers across 32 simulation runs. Simulation mean critical gap is varied between 3s and 8s, while offered gap rate is varied between 0.05veh/s and 0.55veh/s. This study affirms that MLE provides a close to perfect fit to simulation mean critical gaps across a broad range of conditions. The MCG method also provides an almost perfect fit and has superior computational simplicity and efficiency to the MLE. The SWCG method performs robustly under high flows; however, poorly under low to moderate flows. Further research is recommended using field traffic data, under a variety of minor stream and major stream flow conditions for a variety of minor stream movement types, to compare critical gap estimates using MLE against MCG. Should the MCG method prove as robust as MLE, serious consideration should be given to its adoption to estimate critical gap parameters in guidelines. Copyright © 2012 John Wiley & Sons, Ltd.
The Neat Ternary Solid K5−xCo1−xSn9 with Endohedral [Co@Sn9]5− Cluster Units: A Precursor for Soluble Intermetalloid [Co2@Sn17]5− Clusters
Authors: Hlukhyy Viktor , He Haiyan , Jantke Laura‐Alice , Fässler Thomas F. 
Published: August 2012

AbstractA new type of Zintl phase is presented that contains endohedrally filled clusters and that allows for the formation of intermetalloid clusters in solution by a one‐step synthesis. The intermetallic compound K5−xCo1−xSn9 was obtained by the reaction of a preformed CoSn alloy with potassium and tin at high temperatures. The diamagnetic saltlike ternary phase contains discrete [Co@Sn9]5− clusters that are separated by K+ ions. The intermetallic compound K5−xCo1−xSn9 readily and incongruently dissolves in ethylenediamine and in the presence of 4,7,13,16,21,24‐hexaoxa‐1,10‐diazabicyclo[8.8.8]hexacosane (2.2.2‐crypt), thereby leading to the formation of crystalline [K([2.2.2]crypt)]5[Co2Sn17]. The novel polyanion [Co2Sn17]5− contains two Co‐filled Sn9 clusters that share one vertex. Both compounds were characterized by single‐crystal X‐ray structure analysis. The diamagnetism of K5−xCo1−xSn9 and the paramagnetism of [K([2.2.2]crypt)]5[Co2Sn17] have been confirmed by superconducting quantum interference device (SQUID) and EPR measurements, respectively. Quantum chemical calculations reveal an endohedral Co1− atom in an [Sn9]4− nido cluster for [Co@Sn9]5− and confirm the stability of the paramagnetic [Co2Sn17]5− unit.
ChemInform Abstract: Bright White Light Emission from Ultrasmall Cadmium Selenide Nanocrystals.
Authors: Rosson Teresa E. , Claiborne Sarah M. , McBride James R. , Stratton Benjamin S. , Rosenthal Sandra J. 
Published: August 2012

AbstractThe fluorescence quantum yield of ultrasmall white‐light emitting CdSe nanocrystals is increased from 8% to 45% by formic acid treatment.
ChemInform Abstract: VO2 (A) Nanostructures with Controllable Feature Sizes and Giant Aspect Ratios: One‐Step Hydrothermal Synthesis and Lithium‐Ion Battery Performance.
Authors: Dai Lei , Gao Yanfeng , Cao Chuanxiang , Chen Zhang , Luo Hongjie , Kanehira Minoru , Jin Jun , Liu Yu 
Published: August 2012

AbstractUniform one‐dimensional nanostructures of the (A) polymorph of VO2 (space group P42/ncm) with controllable morphologies are hydrothermally synthesized from aqueous solutions of VOSO4, N2H4, and NH3 (autoclave, 260 °C, 2—16 h).
ChemInform Abstract: La[AsO3]: Lanthanum Oxoarsenate(III) with K[ClO3]‐Type Crystal Structure.
Authors: Metzger Sebastian J. , Heymann Gunter , Huppertz Hubert , Schleid Thomas 
Published: August 2012

AbstractColorless, transparent single crystals of the title compound are prepared in high yield (yield not given) by high temperature/high pressure reaction of an equimolar mixture of La2O3 and As2O3 (BN crucible, 11.5 GPa, 1000 °C, 15 min).
ChemInform Abstract: A New Continuous Two‐Step Molecular Precursor Route to Rare‐Earth Oxysulfides Ln2O2S.
Authors: De Crom N. , Devilliers M. 
Published: August 2012

AbstractThe new route to crystalline lanthanoid oxysulfides Ln2O2S occurs at a temperature significantly lower than usual solid state synthesis and avoids the use of dangerous sulfur‐based gases.
ChemInform Abstract: New Directing Groups for Metal‐Catalyzed Asymmetric Carbon—Carbon Bond‐Forming Processes: Stereoconvergent Alkyl—Alkyl Suzuki Cross‐Couplings of Unactivated Electrophiles.
Authors: Wilsily Ashraf , Tramutola Francesco , Owston Nathan A. , Fu Gregory C. 
Published: August 2012

AbstractSecondary alkyl bromides or chlorides bearing a carbamate, sulfonamide or sulfone group undergo nickel/chiral diamine‐catalyzed alkyl—alkyl cross‐coupling reactions with alkyl‐ or arylboranes to give the coupling products with up to 95% enantioselectivity.
ChemInform Abstract: Efficient One‐Pot Synthesis of β‐Unsaturated Isoxazol‐5‐ones and Pyrazol‐5‐ones under Ultrasonic Irradiation.
Authors: Ablajan Keyume , Xiamuxi Hainimu 
Published: August 2012

AbstractUltrasound‐promoted cyclocondensation of β‐ketoesters (I) with hydroxylamine or phenylhydrazine and aromatic aldehydes provides an efficient access towards a variety of isoxazolones (III) or pyrazolones (V), respectively.
ChemInform Abstract: Buchwald—Hartwig Amination of Aryl Chlorides Catalyzed by Easily Accessible Benzimidazolyl Phosphine‐Pd Complexes.
Authors: Chung Kin Ho , So Chau Ming , Wong Shun Man , Luk Chi Him , Zhou Zhongyuan , Lau Chak Po , Kwong Fuk Yee 
Published: August 2012

AbstractPhosphine BPP is found to be highly efficient for the process.
ChemInform Abstract: Sulfoximines: A Reusable Directing Group for Chemo‐ and Regioselective ortho C—H Oxidation of Arenes.
Authors: Yadav M. Ramu , Rit Raja K. , Sahoo Akhila K. 
Published: August 2012

AbstractAcidic hydrolysis of the acetoxylated products furnishes S‐methyl‐S‐phenylsulfoximine in moderate to good yields (61—85%), which can be reused as a directing group by reaction with aroyl chlorides.
ChemInform Abstract: Added‐Metal‐Free Catalytic Nucleophilic Addition of Grignard Reagents to Ketones.
Authors: Zong Hua , Huang Huayin , Liu Junfeng , Bian Guangling , Song Ling 
Published: August 2012

AbstractThe method provides an efficient and general approach to tertiary alcohols and can be applied to prepare the antidepressant Citalopram (IX).
ChemInform Abstract: Biomimetic Catalyzed Enantioselective Decarboxylative Aldol Reaction of β‐Ketoacids with Trifluoromethyl Ketones.
Authors: Zheng Yan , Xiong Heng‐Ying , Nie Jing , Hua Ming‐Qing , Ma Jun‐An 
Published: August 2012

AbstractThe (DHQD)2AQN‐catalyzed title reaction affords a series of trifluoromethyl‐substituted tertiary alcohols (III) and (IV) in good to high yields and enantioselectivities (up to 90% e.e.).
ChemInform Abstract: Iridium Catalyzed Chemoselective Alkylation of 2′‐Aminoacetophenone with Primary Benzyl Type Alcohols under Microwave Conditions.
Authors: Bhat Shailen , Sridharan Visuvanathar 
Published: August 2012

AbstractThe direction of the iridium‐catalyzed alkylation of 2′‐aminoacetophenone (I) with benzyl alcohols (II) depends on the reaction conditions leading either to C‐alkylated products (III) or to N‐alkylated derivatives (IV).
ChemInform Abstract: Preparation of N,N‐Dimethyl Aromatic Amides from Aromatic Aldehydes with Dimethylamine and Iodine Reagents.
Authors: Baba Haruka , Moriyama Katsuhiko , Togo Hideo 
Published: August 2012

AbstractA variety of amines is tested but only dimethylamine and morpholine give amides in moderate to good yields.
ChemInform Abstract: Reaction of Aryl Fluorides with Sodium Sulfide: Investigation into the Selectivity of Substitution of Fluorobenzonitriles to Yield Mercaptobenzonitriles via SNAr Displacement of Fluorine.
Authors: Taldone Tony , Patel Pallav D. , Patel Hardik J. , Chiosis Gabriela 
Published: August 2012

AbstractA variety of substrates undergoes SNAr reaction of fluorine with Na2S to produce the corresponding mercaptobenzonitriles.
ChemInform Abstract: Regioselective C—S Bond Formation Accomplished by Regioselective C—F Substitution of Polyfluoroarenes with Substituted Thiophenols.
Authors: Zhou Qizhong , Zhang Bin , Gu Haining , Zhong Aiguo , Du Tieqi , Zhou Qiong , Ye Yuyuan , Jin Zhengneng , Jiang Huajiang , Chen Rener 
Published: August 2012

AbstractThe nucleophilic aromatic substitution in polyfluorobenzenes by thiophenols is studied.
ChemInform Abstract: Conjugate Addition of Unactivated Thiols to α,β‐Unsaturated Ketones Catalyzed by a Bifunctional Rhenium(V)‐oxo Complex.
Authors: Peng Allan , Rosenblatt Ross , Nolin Kristine 
Published: August 2012

AbstractA moisture‐tolerant complex is described as convenient catalyst for the title reaction which affords biologically interesting β‐sulfanyl ketone structures.
ChemInform Abstract: Cu(acac)2‐Catalyzed N‐Arylations of Phenylurea with Aryl Boronic Acid.
Authors: Gavade Sandip , Balaskar Ravi , Mane Madhav , Pabrekar Pramod N. , Mane Dhananjay 
Published: August 2012

AbstractThe Cu‐catalyzed N‐arylation of phenylurea (I) or urea (IV) with arylboronic acids proceeds under mild reaction conditions and avoids the use of an expensive palladium catalyst or toxic phosphine ligands.
ChemInform Abstract: Efficient Pyrimidone‐Promoted Palladium‐Catalyzed Suzuki—Miyaura Cross‐Coupling Reaction.
Authors: Zhang Hong‐Ping , Dai You‐Zhi , Zhou Xi , Yu Huang 
Published: August 2012

AbstractOrotic acid is applied as the ligand in the reactions of halides with aryl‐ and vinylboronic acids to give biaryls and stilbenes, respectively.
ChemInform Abstract: Palladium‐Catalyzed Desulfitative Conjugate Addition of Aryl Sulfinic Acids and Direct ESI‐MS for Mechanistic Studies.
Authors: Wang Huifeng , Li Yaming , Zhang Rong , Jin Kun , Zhao Defeng , Duan Chunying 
Published: August 2012

AbstractThe title reaction provides a new and efficient approach to β‐arylated ketones.
ChemInform Abstract: Solvent‐Free Oxidative Coupling of 2‐Naphthols Catalyzed by Hydrotalcite‐Like Compounds in Aerobic Conditions.
Authors: Sugamoto Kazuhiro , Matsushita Yoh‐ichi , Matsui Takanao 
Published: August 2012

AbstractA hydrotalcite‐like compound with ruthenium, cobalt, and iron cations in the brucite layer and CO3 anions in the interlayer is an efficient heterogeneous, reusable catalyst for the oxidative coupling of 2‐naphthols as well as substituted phenols.
ChemInform Abstract: Catalytic Enantiospecific [3 + 2] Annulation of Aminocyclopropanes with Ketones.
Authors: Benfatti Fides , de Nanteuil Florian , Waser Jerome 
Published: August 2012

AbstractThe reaction of donor—acceptor cyclopropanes is optimized with respect to the type of Lewis acid catalyst and its loading, and the reaction temperature.
ChemInform Abstract: Palladium‐Catalyzed Cross‐Couplings of Functionalized 2‐Bromobenzofurans for Atom‐Economic Synthesis of 2‐Arylbenzofurans Using Triarylbismuth Reagents.
Authors: Rao Maddali L. N. , Awasthi Dheeraj K. , Talode Jalindar B. 
Published: August 2012

AbstractThe bismuth agents undergo three aryl couplings as multi‐coupling organometallic nucleophiles and the reaction is complete in a short time.
ChemInform Abstract: One‐Pot Synthesis of Tetrahydroindeno[1,2‐b]pyrrolo‐3‐carboxylates Derivatives.
Authors: Azizian Javad , Sheikholeslami Fatemeh , Hosseini Javad , Mohammadi Mohammadkazem , Mirza Behrooz 
Published: August 2012

AbstractThe reaction of 1,3‐dicarbonyl compounds (I) and ninhydrin (II) is carried out in the presence of ammonium acetate under neutral conditions to afford the functionalized tetrahydroindenopyrrole carboxylates (III) in sufficient to high yields.
ChemInform Abstract: Unusual C‐Alkylation of Pyrazolines with 2‐(Het)arylcyclopropane‐1,1‐dicarboxylates in the Presence of GaCl3.
Authors: Novikov Roman A. , Shulishov Evgeny V. , Tomilov Yury V. 
Published: August 2012

AbstractThe reaction of 2‐(het)arylcyclopropane‐1,1‐dicarboxylates (I) with 1‐ and 2‐pyrazolinecarboxylates in the presence of GaCl3 affords predominantly 1:1 or 2:1 adducts depending mainly on the reaction temperature.
ChemInform Abstract: New, Simple, and Effective Thiosemicarbazide Ligand for Copper(II)‐Catalyzed N‐Arylation of Imidazoles.
Authors: Shan Yuefeng , Wang Ying , Jia Xiaolei , Cai Wenwen , Xiang Jiannan 
Published: August 2012

AbstractOptimum reaction conditions are examined for the N‐arylation of imidazoles and benzimidazoles.
ChemInform Abstract: Synthesis of Cyclic N‐Nitrourethanes by the Simultaneous Oxidative Desulfurization and Nitration of Cyclic Thiourethanes.
Authors: Willer Rodney L. , Campbell Christopher G. , Storey Robson F. 
Published: August 2012

AbstractTreatment of cyclic thiourethanes (I) and (III) with acetyl nitrate results in a vigorous reaction, producing the cyclic N‐nitrourethanes (II) and (IV), resp., in high yields.
ChemInform Abstract: Synthesis of Functionalized 4‐Methylenetetrahydropyrans by Oxidative Activation of Cinnamyl or Benzyl Ethers.
Authors: Ghosh Arun K. , Cheng Xu 
Published: August 2012

AbstractA convenient protocol for the Sakurai‐type cyclization of benzyl or cinnamyl ethers bearing allylsilane moieties is developed using DDQ and CAN as oxidant and PPTS as a promotor.
ChemInform Abstract: Synthesis of 3‐Aroylcoumarin—Flavone Hybrids.
Authors: Rao Hulluru S. P. , Tangeti Venkata S. 
Published: August 2012

AbstractFlavone‐based o‐hydroxybenzaldehydes (I), obtained by regioselective Duff reaction, are condensed with α‐oxoketene dithioacetals (II) to furnish title compounds (III) as potentially bioactive and fluorescent materials.
ChemInform Abstract: Zinc Chloride‐Catalyzed One‐Pot, Three‐Component Synthesis of 5,8‐Dihydro‐5,8‐dioxo‐4H‐chromene Derivatives.
Authors: Srinivas Vakiti , Rao Vedula Rajeswar 
Published: August 2012

AbstractThe multicomponent condensation between embelin (I), aromatic aldehydes (II), and cyanothioacetamide (III) in the presence of zinc chloride affords the title derivatives (IV) in very good yields.
ChemInform Abstract: N‐Heterocyclic Carbene Catalyzed Intramolecular Hydroacylation of Alkynylphosphonates.
Authors: Wang Zhenqiang , Yu Zhihua , Wang Ying , Shi Deqing 
Published: August 2012

AbstractDepending on the reaction temperature, exocyclic or endocyclic isomers of the required chromone phosphonates are obtained.
ChemInform Abstract: Scandium(III)‐Zeolites as New Heterogeneous Catalysts for Imino‐Diels—Alder Reactions.
Authors: Olmos Andrea , Louis Benoit , Pale Patrick 
Published: August 2012

AbstractThe reaction of aldehydes, amines and dienes catalyzed by the title zeolite affords either imino‐Diels—Alder products (III) and (VI), or imino‐Mukaiyama‐aldol products (XI), (XII), (XIV), and (XVI).
ChemInform Abstract: Four‐Component One‐Pot Synthesis of Novel 7,8‐Dihydroquinolin‐5(1H,4H,6H)‐one Derivatives Containing an Ionone Unit and in vitro Antioxidant Activity.
Authors: Findik Esra , Ceylan Mustafa , Elmastas Mahfuz 
Published: August 2012

AbstractTitle compounds (IV) are prepared by a four‐component reaction of α‐ionone (I), dimedone (II) and aromatic aldehydes with ammonium acetate.
ChemInform Abstract: Dual Catalysis: Combination of Photocatalytic Aerobic Oxidation and Metal Catalyzed Alkynylation Reactions — C—C Bond Formation Using Visible Light.
Authors: Rueping Magnus , Koenigs Rene M. , Poscharny Konstantin , Fabry David C. , Leonori Daniele , Vila Carlos 
Published: August 2012

AbstractThe photoinduced Ru‐catalyzed aerobic oxidation of tetrahydroisoquinolines (I), (VI) and (VIII) is successfully combined with a Cu‐catalyzed alkynylation reaction to afford 1‐alkynyltetrahydroisoquinolines in good yields.
ChemInform Abstract: Toward Versatile Methods Leading to Highly Functionalized Imidazo[1,2‐a]pyridines.
Authors: Basilio‐Lopes Alexandra , Medonca de Aquino Thiago , Mongeot Alexandre , Bourguignon Jean‐Jacques , Schmitt Martine 
Published: August 2012

AbstractA convenient synthesis of target compounds involves chlorination of the starting amides to iminocarboxylic acid chlorides and formation of amidines with piperidine.
ChemInform Abstract: Synthesis, Characterization and in vitro Biological Studies of Some Novel Pyran Fused Pyrimidone Derivatives.
Authors: Mistry Prashant T. , Kamdar Nimesh R. , Haveliwala Dhaval D. , Patel Saurabh K. 
Published: August 2012

AbstractA new series of tricyclic pyranopyrimidone derivatives is achieved by cyclization of dihydropyranopyrazoles (I) with formic or acetic acid.
ChemInform Abstract: Novel Synthesis of Some New Pyrimido[1,6‐a]pyrimidine and Pyrazolo[1,5‐a]pyrimidine Derivatives.
Authors: Hussein Ahmed M. 
Published: August 2012

AbstractAminopyrazoles (I) react with sodium formyl salts of aliphatic and aromatic acyclic ketones (II) to provide the pyrazolopyrimidine derivatives (III).
ChemInform Abstract: Synthesis of N‐Substituted 7‐Aryl‐5‐methyl‐4,7‐dihydrotetrazolo[1,5‐a]pyrimidine‐6‐carboxamides
Authors: Gein V. L. , Zamaraeva T. M. , Nosova N. V. , Vakhrin M. I. , Slepukhin P. A. 
Published: August 2012

Abstractvia a one‐pot, three‐component reaction (15 examples)
ChemInform Abstract: Broensted Acid Hydrotrope Combined Catalyst for Environmentally Benign Synthesis of Quinoxalines and Pyrido[2,3‐b]pyrazines in Aqueous Medium.
Authors: Kumbhar Arjun , Kamble Santosh , Barge Madhuri , Rashinkar Gajanan , Salunkhe Rajashri 
Published: August 2012

AbstractA novel protocol is developed for the condensation of 1,2‐diamines with 1,2‐diketones to give pyridopyarzine derivatives.
ChemInform Abstract: Copper(I) Mediated Facile Synthesis of Potent Tubulin Polymerization Inhibitor, 9‐Amino‐α‐noscapine from Natural α‐Noscapine.
Authors: Manchukonda Naresh K. , Sridhar Balasubramanian , Naik Pradeep K. , Joshi Harish C. , Kantevari Srinivas 
Published: August 2012

AbstractFacile synthesis of 9‐amino‐α‐noscapine (II) is achieved via copper(I) iodide mediated in situ aromatic azidation and reduction of 9‐bromo‐α‐noscapine (obtained by bromination of natural α‐noscapine) with sodium azide in DMSO in the presence of L‐proline as an amino acid promoter.
ChemInform Abstract: Synthesis and Antiviral Activity of a Series of 1′‐Substituted 4‐Aza‐7,9‐dideazaadenosine C‐Nucleosides.
Authors: Cho Aesop , Saunders Oliver L. , Butler Thomas , Zhang Lijun , Xu Jie , Vela Jennifer E. , Feng Joy Y. , Ray Adrian S. , Kim Choung U. 
Published: August 2012

AbstractA series of novel 1′‐substituted analogues of 4‐aza‐7,9‐dideazaadenosine C‐nucleoside are prepared and tested in antiviral assays.