bluuebunny/crossref_metadata_2025 huggingface dataset:
Emission sources contributing to tropospheric ozone over Equatorial Africa during the summer monsoon
Authors: Bouarar I. , Law K. S. , Pham M. , Liousse C. , Schlager H. , Hamburger T. , Reeves C. E. , Cammas J.-P. , Nédéléc P. , Szopa S. , Ravegnani F. , Viciani S. , D'Amato F. , Ulanovsky A. , Richter A.
Published: December 2011

Abstract. A global chemistry-climate model LMDz_INCA is used to investigate the contribution of African and Asian emissions to tropospheric ozone over Central and West Africa during the summer monsoon. The model results show that ozone in this region is most sensitive to lightning NOx and to Central African biomass burning emissions. However, other emission categories also contribute significantly to regional ozone. The maximum ozone changes due to lightning NOx occur in the upper troposphere between 400 hPa and 200 hPa over West Africa and downwind over the Atlantic Ocean. Biomass burning emissions mainly influence ozone in the lower and middle troposphere over Central Africa, and downwind due to westward transport. Biogenic emissions of volatile organic compounds, which can be uplifted from the lower troposphere to higher altitudes by the deep convection that occurs over West Africa during the monsoon season, lead to maximum ozone changes in the lower stratosphere region. Soil NOx emissions over the Sahel region make a significant contribution to ozone in the lower troposphere. In addition, convective uplift of these emissions and subsequent ozone production are also an important source of ozone in the upper troposphere over West Africa. Concerning African anthropogenic emissions, they only make a small contribution to ozone compared to the other emission categories. The model results indicate that most ozone changes due to African emissions occur downwind, especially over the Atlantic Ocean, far from the emission regions. The import of Asian emissions also makes a considerable contribution to ozone concentrations above 150 hPa and has to be taken into account in studies of the ozone budget over Africa. Using IPCC AR5 (Intergovernmental Panel on Climate Change; Fifth Assessment Report) estimates of anthropogenic emissions for 2030 over Africa and Asia, model calculations show larger changes in ozone over Africa due to growth in Asian emissions compared to African emissions over the next 20 yr.
In the Backdrop of Modernism:
Authors: Jonsson AnnKatrin
Published: December 2011

This article aims to raise questions concerning inclusion or exclusion in the story of modernism, in this case the specific account of Anglo-American little magazines published in Europe between the wars. Allanah Harper, the editor of such a magazine, the little known Echanges: Revue trimestrielle de littérature Anglaise et Française, attempted to position her review among a configuration of literary and cultural magazines at the time. A study of this attempt reveals the position taking, categorization, and domination at work in the field of literary reviews and thus begins to suggest why Echanges has receded into the backdrop of modernism.
James Joyce Exhibits at Cambridge's Literary Laboratories
Authors: Loukopoulou Eleni
Published: December 2011

The article discusses James Joyce's interaction with the group that produced the magazine Experiment at Cambridge University. The focus is on the publication background of an extract from Finnegans Wake titled “From Work in Progress,” which was accompanied by Stuart Gilbert's article “A Footnote to Work in Progress” (March 1931).
Canine Immune-Mediated Polyarthritis
Authors: Johnson Kirstin C. , Mackin Andrew
Published: December 2011

Immune-mediated polyarthritis (IMPA) is a common disease process in the dog.1 The immune-mediated polyarthropathies are divided into two major categories: erosive (or deforming) and nonerosive (or nondeforming). Understanding the pathophysiology of the immune attack on affected joints is paramount in choosing the most effective therapy for managing canine IMPA. This review article is the first of a two-part series and focuses on the pathophysiology of IMPA. The second article in this series, to be published in the March/April 2012 issue, concentrates on the diagnosis and treatment of immune-mediated polyarthritis.
Detection of Paratuberculosis in Breeding Bulls at Pakistani Semen Production Units: A Continuous Source of Threat
Authors: Abbas Muhammad , Munir Muhammad , Khaliq Syed Abdul , Haq Muhammad Ikram Ul , Tanveer Khan Muhammad , Qureshi Zafar ul Ahsan
Published: December 2011

Paratuberculosis is a chronic bowel disease of ruminants caused by Mycobacterium avium subsp. paratuberculosis (MAP). Its secretion through semen highlights the importance of paratuberculosis-free breeding bulls. The breeding and teaser bulls at three semen production units (SPUs) located in Punjab, Pakistan, were screened for the presence of antibodies against MAP. A total of 253 samples were collected from SPUs and a commercially available indirect screen ELISA (Is-ELISA) was applied. Is-ELISA detected antibodies in 20 (24.6%), 16 (22.8%), and 17 (16.6%) samples from SPU-I, SPU-II, and SPU-III, respectively. Collectively, seroprevalence of 20.0% (47/235) in breeding bulls and 33.3% (6/18) in teaser bulls was observed, and thus it poses a potential threat of disease spread to a high number of heifers and cows through artificial insemination. Therefore, this paper highlights the presence of the disease for the first time at SPUs and triggers attempts to ascertain the prevalence of paratuberculosis throughout the country.
Effect of Tillage, Irrigation, and Nutrient Levels on Growth and Yield of Sweet Potato in Rice Fallow
Authors: Nedunchezhiyan M. , Byju G. , Ray R. C.
Published: December 2011

A field experiment was conducted during the year 2007-2008 and 2008-2009 in Bhubaneswar, India to study the effect of tillage, irrigation and nutrient levels on growth and yield of sweet potato (Ipomoea batatas L.) in rice fallow. The results revealed that the conventional tillage system of sweet potato planting recorded maximum fresh root yield. During the year 2007-2008 and 2008-2009, the fresh root yield in this system was 4.6% and 30.3% higher than the minimum tillage treatment, respectively. Similarly 5.6% and 21.7% higher green fodder yields were obtained in conventional tillage compared to minimum tillage treatment during the year 2007-2008 and 2008-2009, respectively. But lower consumptive use and water use efficiency (WUE) were observed in conventional tillage than minimum tillage. Increasing irrigation and nutrient levels increased root and fodder yield significantly in both the years as well as reduced the soil compactness. The consumptive use and WUE were decreased with increasing irrigation levels, and increased with increasing levels of nutrients. Minimum tillage has advanced planting of sweet potato 15 to 17 days and produced 80–90% root and fodder yield of conventional tillage.
Generation of discrete first‐ and second‐order sensitivities for single shooting
Authors: Barz Tilman , Kraus Robert , Zhu Liming , Wozny Günter , Arellano‐Garcia Harvey
Published: December 2011

In this work, an approach to the forward generation of discrete first‐ and second‐order sensitivities is proposed. For this purpose, an algorithm has been developed, which can basically be applied to general implicit differential‐algebraic equation (DAE) systems. Moreover, the approach has been tailored to both the generation of directional derivatives and sensitivities with respect to discontinuous control trajectories. The implementation of the method is discussed here for the orthogonal collocation method based on Legendre–Gauss–Radau points and considering the linear implicit DAE type, which arises in problems related to chemical engineering. Lastly, the approach has been applied to three case studies of different complexities. The corresponding performance for the generation of Jacobian and Hessian information is discussed in detail. © 2012 American Institute of Chemical Engineers AIChE J, 58: 3110–3122, 2012
Isothermal crystallization behavior of nano‐alumina particles‐filled poly(ether ether ketone) composites
Authors: Wu J. H. , Yen M. S. , Chen C. W. , Kuo M. C. , Tsai F. K. , Kuo J. S. , Yang L. H. , Huang J. C.
Published: December 2011

The isothermal crystallization behavior of nano‐alumina particle‐filled poly(ether ether ketone) (PEEK) composites has been investigated using differential scanning calorimeter. The results show that all the neat PEEK and nano‐alumina‐filled PEEK composites exhibit the double‐melting behavior under isothermal crystallization. The peak crystallization times (τp) for all the neat PEEK and PEEK/aluminum oxide (Al2O3) composites increase with increasing crystallization temperature. Moreover, the crystallinity of the PEEK/Al2O3 composite with 7.5 wt % nano‐filler content reached the maximum value of 44.8% at 290°C, higher than that of the neat PEEK polymer. From the lower value in τp and higher value in Xc for the PEEK/Al2O3 composites, the inclusion of the nano‐alumina into the PEEK matrix favored the occurrence of heterogeneous nucleation. The Avrami exponents n of all the neat PEEK and PEEK/Al2O3 composites ranged from 2 to 3, and the n values for PEEK/Al2O3 composites were slightly higher than that of the neat PEEK polymer, indicating that the inclusion of the nano‐filler made the crystallization mechanism more complex. However, the growth rate of crystallization was lowered as the nano‐ filler was introduced, and the decrease in growth rate reduced the grain size of the PEEK spherulites because of the lowering of molecule mobility during isothermal crystallization. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012
Biodegradation of a polylactic acid/polyvinyl chloride blend in soil
Authors: Santana V. T. , Gonçalves S. P. C. , Agnelli J. A. M. , Martins‐Franchetti S. M.
Published: December 2011

This study investigated the microbial action in soil on poly(L‐lactic acid) (PLLA) and polyvinyl chloride (PVC) films and a PLLA/PVC 7 : 3 blend, using Fourier transform infrared spectroscopy (FTIR), contact angle and scanning electron microscopy (SEM). The films (50 μm) were obtained from the evaporation of dichloromethane solutions and buried in soil columns, in controlled conditions, for 120 days. The results showed that the surface of the PLLA films and blend became 18 and 31% more hydrophilic, respectively. The morphology of the films also changed after 120 days of microbial treatment, particularly that of the PLLA phase in the blend, confirmed by structural and conformational changes in the FTIR CO region at 1200–1000 cm–1 and an increase in the relative intensity of the band at 1773 cm–1, which was attributed to CO group vibration due to a rotational isomer in the interlamellar region (semi‐ordered region). Besides the biotreated PVC presented changes in the CCl band at 738 cm–1, due to the presence of some PVC conformational isomer. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012
Fabrication of graded macroporous poly(lactic acid) scaffold by a progressive solvent casting/porogen leaching approach
Authors: Gong Xinghou , Tang Chak Yin , Zhang Yugang , Wong Chi Tak , Wu Shuping , Liu Jianing
Published: December 2011

Biodegradable porous scaffolds play an important role as transplant vehicles for cultured cells or templates to guide tissue regeneration. Graded porous scaffolds can be utilized to study the interactions between cells or tissues and scaffolds with different pore sizes. In this study, a progressive solvent casting/porogen leaching (PSC/PL) approach was developed to fabricate a porous PLA scaffold with an axial pore size grade. The graded macroporous PLA scaffold was built up by solvent casting layer‐by‐layer progressively in a Buchner funnel with the assistance of a vacuum pump to facilitate the removal of solvent. The grade was achieved by gradually decreasing the size and content of salt at different layers. The resulting scaffold layers had an average thickness of 1 mm, a progressive pore size from 166 ± 41 μm to 453 ± 18 μm, and compressive moduli between 2.12 ± 0.08 MPa and 2.56 ± 0.18 MPa, which correspond to models of each layer (The compressive modulus of the whole graded macroporous PLA scaffold was 2.18 ± 0.24 MPa.). This method allows the fabrication of grade macroporous PLA scaffold in a simple, homogenous, and fast way. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012
Stability Analysis of Constrained Nonlinear Model Predictive Control with Terminal Weighting
Authors: Chen Wen‐Hua , Cao Yi
Published: December 2011

This paper investigates stability of model predictive control (MPC) for nonlinear constrained systems. New stability results for the MPC algorithms with terminal weighting are proposed using the dynamic programming method, which gives new criteria for choosing state, control and terminal weighting in the performance index to achieve stability of MPC algorithms. Illustrative examples are given to show that by combining this condition with existing ones, much less conservative results can be generated.
Plasma‐activated carbon nanotube‐based high sensitivity immunosensors for monitoring Legionella pneumophila by direct detection of maltose binding protein peptidoglycan‐associated lipoprotein (MBP‐PAL)
Authors: Lee Jun‐Yong , Jin Joon‐Hyung , Kim Joon Hyub , Kim Min Ja , Lee Cheol Jin , Min Nam Ki
Published: December 2011

Transferred multi‐walled carbon nanotube (MWCNT)‐modified platinum thin‐film immunosensing electrode material was engineered on a glass substrate and fabricated a fully‐integrated electrochemical three‐electrode system for monitoring Legionella pneumophila. The transferred MWCNT film was treated with oxygen plasma to improve its electrochemical response and electrical conductivity. We voltammetrically characterized and optimized the electrochemical performance of the fabricated electrode for direct detection of Legionella pneumophila‐specific peptidoglycan‐associated lipoprotein (PAL) and maltose binding protein (MBP) peptidoglycan‐associated lipoprotein (MBP‐PAL) fusion. The latter, as an intermediate product to yield the former, has important roles in the growth and purification of PAL, which commercial enzyme‐linked immunosorbent assay (ELISA) kits require as a target substrate. Consequently, direct electrochemical detection of MBP‐PAL compared to PAL by square‐wave voltammetry showed a greater than 50% increase in sensitivity with a lower detection limit of 5 pg mL−1. We also investigated the affinity properties by determining kinetic parameters of the PAL and the MBP‐PAL in relation to polyclonal antibodies immobilized on transferred MWCNT substrates using Michaelis–Menten assumptions and a Hanes–Woolf plot. This new method presented herein could save the time and effort for the separation and purification of PAL form MBP‐PAL fusions that are required for performing ELISA‐based immunoassay. Biotechnol. Bioeng. 2012; 109:1471–1478. © 2011 Wiley Periodicals, Inc.
ChemInform Abstract: New Investigation of Phase Equilibria in the System Al—Cu—Si
Authors: Ponweiser Norbert , Richter Klaus W.
Published: December 2011

500 °C and 700 °C isothermal sections
ChemInform Abstract: Decomposition of Molybdate‐Hexamethylenetetramine Complex: One Single Source Route for Different Catalytic Materials.
Authors: Chouzier Sandra , Czeri Tivadar , Roy‐Auberger Magalie , Pichon Christophe , Geantet Christophe , Vrinat Michel , Afanasiev Pavel
Published: December 2011

Decomposition of (hmta)2 (NH4) 4Mo7O24·2H2O (hmta: hexamethylenetetramine) under non‐reactive N2 or Ar flow leads to dispersed Mo2N.
ChemInform Abstract: Synthesis, Structure, Ion‐Exchange and Fluorescence of a Novel Two‐Dimensional Niobium Fluorophosphate with 4.8‐Net Layer.
Authors: Feng Yu‐Quan , Qiu Dong‐Fang , Zhong Zhi‐Guo , Liu Ke‐Cheng , Wang Hong‐Wei
Published: December 2011

(NH4)2(H2en)2 (Nb3P4O19F3) ·H2O is hydrothermally synthesized from a mixture of Nb2O5 dissolved in aqueous HF (170 °C, 4 h), H3PO4, en, guanidine nitrate, NH4F, H2O, and ethylene glycol (autoclave, 180 °C, 8 d).
ChemInform Abstract: A New Hydrazine‐Bridged Thioantimonate Mn2Sb4S8 (N2H4)2: Synthesis, Structure, Optical and Magnetic Properties.
Authors: Liu Yi , Tian Yufeng , Wei FengXia , Ping Michael Ser Chong , Huang Chuanwei , Boey Freddy , Kloc Christian , Chen Lang , Wu Tom , Zhang Qichun
Published: December 2011

The title compound is solvothermally synthesized from a mixture of Sb2S3, Mn, S, and hydrazine monohydrate (autoclave, 160 °C, 7 d, 70% yield).
ChemInform Abstract: Synthesis, Structure and Magnetism of a S‐Shaped Multi‐Iron Substituted Arsenotungstate Containing a Trivacant Keggin [B‐α‐AsVW9O34]9‐ and a Hexavacant Keggin [α‐AsVW6O26]11‐ Fragments.
Authors: Zhao Junwei , Han Qiuxia , Shi Dongying , Chen Lijuan , Ma Pengtao , Wang Jingping , Niu Jingyang
Published: December 2011

[enH2]2 [(H2AsW6O26)Fe3(H2O) (H4AsW9O34)]2[Fe] 2·8H2O is hydrothermally synthesized from an aqueous mixture of K14[As2W19O67(H2O)], Fe2(SO4)3, en, and H3PO4 (autoclave, pH 6.0, 130 °C, 5 d; 51% yield).
ChemInform Abstract: Stabilization and Study of SrFe1‐xMnxO2 Oxides with Infinite‐Layer Structure.
Authors: Retuerto Maria , Jimenez‐Villacorta Felix , Martinez‐Lope Maria J. , Fernandez‐Diaz Maria T. , Alonso Jose A.
Published: December 2011

Layered oxides SrFe1‐xMnxO2 (x = 0, 0.1, 0.2, 0.3) are prepared by reduction of three‐dimensional perovskites SrFe1‐xMnxO3‐δ with CaH2 at 583 K for 2 d.
ChemInform Abstract: Phosphine‐Catalyzed Annulations of Azomethine Imines: Allene‐Dependent [3 + 2], [3 + 3], [4 + 3], and [3 + 2 + 3] Pathways.
Authors: Guo Hongchao , et al. et al.
Published: December 2011

Under very mild reaction conditions, the title annulation reactions of oxopyrazolidine‐derived azomethine imines (I) or (VII) with allenoates afford a broad range of pyrazolo‐fused pyrazolones, pyridazinones, diazepinones, and diazocinones.
ChemInform Abstract: Neocuproine—KOtBu Promoted Intramolecular Cross Coupling to Approach Fused Rings.
Authors: Sun Chang‐Liang , Gu Yi‐Fan , Huang Wei‐Ping , Shi Zhang‐Jie
Published: December 2011

A simple, efficient, and transition‐metal‐free protocol for the synthesis of fused heterocyclic systems is reported.
ChemInform Abstract: (Pentamethylcyclopentadienyl)Iridium Dichloride Dimer {[IrCp*Cl2]2}: A Novel Efficient Catalyst for the Cycloisomerizations of Homopropargylic Diols and N‐Tethered Enynes.
Authors: Benedetti Erica , Simonneau Antoine , Hours Alexandra , Amouri Hani , Penoni Andrea , Palmisano Giovanni , Malacria Max , Goddard Jean‐Philippe , Fensterbank Louis
Published: December 2011

A novel Ir‐catalyst for the straightforward cycloisomerization of different functionalized 1,6‐enynes is found.
ChemInform Abstract: Novel Organic—Inorganic Hybrid Mesoporous Silica‐Supported Oxo‐Vanadium Schiff Base for Selective Oxidation of Alcohols.
Authors: Verma Sanny , Nandi Mahasweta , Modak Arindam , Jain Suman L. , Bhaumik Asim
Published: December 2011

The catalyst shows very good activity and affords high to excellent yields under mild conditions.
ChemInform Abstract: Efficient Synthesis of gem‐Dihydroperoxides with Molecular Oxygen and Anthraquinone under Visible Light Irradiation with Fluorescent Lamp.
Authors: Cui Lei , Tada Norihiro , Okubo Hiroaki , Miura Tsuyoshi , Itoh Akichika
Published: December 2011

A facile and practical method for the title synthesis is presented.
ChemInform Abstract: Sulfonic Acid Supported on Hydroxyapatite‐Encapsulated‐γ‐Fe2O3 Nanocrystallites as a Magnetically Separable Catalyst for One‐Pot Reductive Amination of Carbonyl Compounds.
Authors: Deng Jia , Mo Li‐Ping , Zhao Fei‐Yang , Hou Lan‐Lan , Yang Li , Zhang Zhan‐Hui
Published: December 2011

A novel and environmentally friendly procedure for the title reaction (85 examples), which uses an easily prepared and reusable catalyst, is developed.
ChemInform Abstract: Shvo′s Catalyst and [IrCp*Cl2(amidine)] Effectively Catalyze the Formation of Tertiary Amines from the Reaction of Primary Alcohols and Ammonium Salts.
Authors: Segarra Candela , Mas‐Marza Elena , Mata Jose A. , Peris Eduardo
Published: December 2011

The iridium catalysts (I) and (II) are prepared and tested in the β‐alkylation of phenylethanol with primary alcohols, and in the formation of tertiary amines from the reaction of ammonium salts with alcohols.
ChemInform Abstract: Rhodium‐Grafted Hydrotalcite Catalyst for Heterogeneous 1,4‐Addition Reaction of Organoboron Reagents to Electron Deficient Olefins.
Authors: Motokura Ken , Hashimoto Norifumi , Hara Takayoshi , Mitsudome Takato , Mizugaki Tomoo , Jitsukawa Koichiro , Kaneda Kiyotomi
Published: December 2011

The title catalyst is also applicable to the one‐pot three‐component synthesis of cyanopropionates, e.g. (XII).
ChemInform Abstract: Cross‐Coupling of Mesylated Phenol Derivatives with Potassium Cyclopropyltrifluoroborate.
Authors: Molander Gary A. , Beaumard Floriane , Niethamer Terren K.
Published: December 2011

The arylated cyclopropanes are of biological interest.
ChemInform Abstract: D‐Glucosamine as an Efficient Ligand for the Copper‐Catalyzed Selective Synthesis of Anilines from Aryl Halides and NaN3.
Authors: Thakur Krishna Gopal , Srinivas Kotha Surya , Chiranjeevi Korupalli , Sekar Govindasamy
Published: December 2011

The scalable synthesis of the title compounds (II), using an efficient, economic, environmentally friendly, and removable catalyst, is presented.
ChemInform Abstract: Palladium‐Catalyzed Stereoconvergent Formylation of (E/Z)‐β‐Bromo‐β‐fluorostyrene: Straightforward Access to (Z)‐α‐Fluorocinnamic Aldehydes and (Z)‐β‐Fluorocinnamic Alcohols.
Authors: Zemmouri Rajae , Kajjout Mohammed , Castanet Yves , Eddarir Said , Rolando Christian
Published: December 2011

The method can be applied successfully to prepare (Z)‐β‐fluoroconiferin (IX), a strong inhibitor of lignin polymerization.
ChemInform Abstract: A Clean, Palladium‐Catalyzed Oxidative Esterification of Aldehydes Using Benzyl Chloride.
Authors: Heropoulos Georgios A. , Villalonga‐Barber Carolina
Published: December 2011

The use of benzyl chloride as the oxidant allows the conversion of aldehydes into the corresponding ethyl esters under mild conditions with toluene as the sole by‐product.
ChemInform Abstract: Synthesis, Biochemical and Molecular Modeling Studies of Antiproliferative Azetidinones Causing Microtubule Disruption and Mitotic Catastrophe.
Authors: O'Boyle Niamh M. , Carr Miriam , Greene Lisa M. , Keely Niall O. , Knox Andrew J. S. , McCabe Thomas , Lloyd David G. , Zisterer Daniela M. , Meegan Mary J.
Published: December 2011

A series of azetidinones of type (III), (II), and (XI) is prepared using the Staudinger and (VI) using Reformatsky reaction.
ChemInform Abstract: Nickel‐Catalyzed [3 + 2] Cycloaddition of α,β‐Unsaturated Ketones with Vinyl Oxiranes.
Authors: Sako Saori , Kurahashi Takuya , Matsubara Seijiro
Published: December 2011

Reaction conditions are optimized for the nickel‐catalyzed [3+2] cycloaddition of α,β‐unsaturated ketones (II) with vinyl oxiranes (I).
ChemInform Abstract: [3 + 2] Coupling of Quinone Monoacetals by Combined Acid—Hydrogen Bond Donor.
Authors: Dohi Toshifumi , Hu Yinjun , Kamitanaka Tohru , Washimi Naohiko , Kita Yasuyuki
Published: December 2011

The method allows a new and efficient access to various dihydrobenzofuran derivatives.
ChemInform Abstract: Microwave‐Assisted Synthesis of 5‐Substituted 2‐Aminothiophenes Starting from Arylacetaldehydes.
Authors: Revelant Germain , Dunand Sandrine , Hesse Stephanie , Kirsch Gilbert
Published: December 2011

Starting from carboxylic acids, a convenient three‐step synthesis of aldehydes is developed as is exemplified for (Va).
ChemInform Abstract: Nanoporous Aluminosilicate Catalyzed Friedel—Crafts Alkylation Reactions of Indoles with Aldehydes and Acetals.
Authors: Kubczyk Tomasz M. , Williams Sarah M. , Kean Jacqueline R. , Davies Thomas E. , Taylor Stuart H. , Graham Andrew E.
Published: December 2011

An efficient catalyst is used in the presented synthesis.
ChemInform Abstract: A Straightforward Synthesis of Pyrazolines and Pyrazoles: Palladium‐Catalyzed Carbonylative Vinylation—Cyclocondensation Reactions of Aryl Halides.
Authors: Wu Xiao‐Feng , Neumann Helfried , Beller Matthias
Published: December 2011

A number of pyrazolines is synthesized by the multicomponent reaction of aryl halides, styrenes, carbon monoxide, and hydrazines.
ChemInform Abstract: Synthesis of 1‐Vinylpyrrole‐imidazole Alkaloids.
Authors: Belyaeva Kseniya V. , Andriyankova Ludmila V. , Nikitina Lina P. , Ivanov Andrei V. , Afonin Andrei V. , Ushakov Igor' A. , Mal'kina Anastasiya G. , Mikhaleva Al'bina I. , Trofimov Boris A.
Published: December 2011

Unlike similar reactions with aliphatic or aromatic aldehydes which form 1:1:1 adducts, the three‐component process including 1‐vinylpyrrole‐2‐carbaldehydes proceeds with 2 equiv.
ChemInform Abstract: Design and Synthesis of Spiro[indole‐thiazolidine]spiro[indole‐pyrans] as Antimicrobial Agents.
Authors: Sakhuja Rajeev , Panda Siva S. , Khanna Leena , Khurana Shilpi , Jain Subhash C.
Published: December 2011

The new title compounds (V) and (IX) are evaluated for their antimicrobial activities against Gram‐positive and Gram‐negative bacteria as well as for their antifungal activities.
ChemInform Abstract: Synthesis and Biological Evaluation of Novel Mannich Bases of 2‐Arylimidazo[2,1‐b]benzothiazoles as Potential Anticancer Agents.
Authors: Kumbhare Ravindra M. , Kumar K. Vijay , Ramaiah M. Janaki , Dadmal Tulshiram , Pushpavalli S. N. C. V. L. , Mukhopadhyay Debasmita , Divya B. , Devi T. Anjana , Kosurkar Umesh , Pal‐Bhadra Manika
Published: December 2011

The novel compounds (VI) are evaluated for their antiproliferative activity in three cancer cell lines.
ChemInform Abstract: Nitration of Primary Aminofurazans with Aqueous Nitric Acid.
Authors: Zelenov V. P. , Lobanova A. A.
Published: December 2011

Monosubstituted nitramines of the furazan series (II) are obtained in a convenient one‐step procedure.
ChemInform Abstract: N‐Heterocyclic Carbene‐Catalyzed Cyclization of Unsaturated Acyl Chlorides and Ketones.
Authors: Shen Li‐Tao , Shao Pan‐Lin , Ye Song
Published: December 2011

The title reaction gives dihydropyranones and spirocyclic oxindole‐dihydropyranones.
ChemInform Abstract: Synthesis and Free Radical Scavenging Activity of Coumarin Derivatives Containing a 2‐Methylbenzothiazoline Motif.
Authors: Khoobi Mehdi , Emami Saeed , Dehghan Gholamreza , Foroumadi Alireza , Ramazani Ali , Shafiee Abbas
Published: December 2011

Reaction of coumarin derivatives with aminothiophenols affords the benzothiazoline derivatives (III) and benzothiazole analogue (V) which can be further derivatized by alkylation reactions.
ChemInform Abstract: Toward Potent α‐Glucosidase Inhibitors Based on Xanthones: A Closer Look into the Structure—Activity Correlations.
Authors: Li Gai‐Li , He Jia‐Yun , Zhang Aiqin , Wan Yiqian , Wang Bo , Chen Wen‐Hua
Published: December 2011

A series of non‐coplanar and flexible xanthone derivatives (III), (IV) and (VI) is synthesized as potential α‐glucosidase inhibitors.
ChemInform Abstract: Synthesis and Biological Evaluation of Some Novel N‐Aryl‐1,4‐dihydropyridines as Potential Antitubercular Agents.
Authors: Trivedi Amit R. , Dodiya Dipti K. , Dholariya Bipin H. , Kataria Vipul B. , Bhuva Vimal R. , Shah Viresh H.
Published: December 2011

N‐Aryldihydropyrimidines (IV), bearing an acetyl or a carbethoxy group at the 3‐ and 5‐position of the dihydropyridine ring and a pyrazole ring at position 4, are synthesized to overcome the resistant isolates.
ChemInform Abstract: KF/Al2O3 Promoted Aza‐Michael Addition of 4‐Aryl‐7,7‐dimethyloctahydroquinazolinones to α,β‐Ethylenic Compounds.
Authors: Wang Xi‐Cun , Wang Zhong‐Jie , Zhang Zhang , Quan Zheng‐Jun
Published: December 2011

The title reactions afford regioselectivity N3‐ or N1‐alkylated quinazolinone derivatives (III) or (V), resp., depending on the steric bulk of the aryl groups.
ChemInform Abstract: Synthesis and Anticancer Activity of (RS)‐9‐(2,3‐Dihydro‐1,4‐benzoxaheteroin‐2‐ylmethyl)‐9H‐purines.
Authors: Conejo‐Garcia Ana , Garcia‐Rubino M. Eugenia , Marchal Juan A. , Nunez M. Carmen , Ramirez Alberto , Cimino Sandro , Garcia M. Angel , Aranega Antonia , Gallo Miguel A. , Campos Joaquin M.
Published: December 2011

Some of the title compounds especially compound (IIId), show significant anticancer activities against MCF‐7 cancer cell lines.
ChemInform Abstract: A General Synthesis of N‐Substituted 1,4‐Benzoxazine‐ and 1,4‐Benzothiazine‐2‐carboxylates via Copper‐Catalyzed Intramolecular Amination of Arylbromides.
Authors: Melkonyan Ferdinand , Topolyan Artiom , Karchava Alexander , Yurovskaya Marina
Published: December 2011

The process tolerates various functional groups and can be carried out in the presence of inexpensive CuI without the need of any ligand.
ChemInform Abstract: An Efficient Three‐Component Tandem Reaction Leading to Pentacyclic Isoindole‐Fused Benzo[b,e][1,4]diazepines in Water.
Authors: Wang Shu‐Liang , Cheng Chuang , Wu Fei‐Yue , Jiang Bo , Tu Shu‐Jiang
Published: December 2011

16 Title compounds of type (IV) and (VI) are prepared in an one‐pot three‐component tandem reaction in the presence of acetic acid under microwave irradiation.
ChemInform Abstract: Lewis Acid or Alkyl Halide Promoted Rearrangements of Phosphor‐ and Phosphinimidates to N,N‐Disubstituted Phosphor‐ and Phosphinamidates.
Authors: Wilkening Ina , del Signore Giuseppe , Ahlbrecht Wiebke , Hackenberger Christian P. R.
Published: December 2011

The reaction of phosphites (I) or phosphonites (IV) with organic azides generates phosphorimidates or phosphinimidates in solution.
ChemInform Abstract: Acid/Base‐Catalyzed Cyclization of O‐Alkynylphenylphosphonic Acid Monoesters and (O‐Hydroxyphenyl)ethynylphosphinates.
Authors: Peng Ai‐Yun , Du Yidan , Wei Yingling , Xie Liang , Ding Yi‐Xiang
Published: December 2011

The first examples of the synthesis of phosphorus heterocycles via acid‐ or base‐catalyzed intramolecular cyclization reactions of title alkynes are given.
ChemInform Abstract: Copper‐Catalyzed Domino One‐Pot Synthesis of 2‐(Arylselanyl)arylcyanamides.
Authors: Ramana Tamminana , Punniyamurthy Tharmalingam
Published: December 2011

The procedure consists of intra‐ and intermolecular C—Se cross‐coupling reactions and is applicable to several selenoureas.
ChemInform Abstract: Synthesis of Rhodamine B‐Benzenesulfonamide Conjugates and Their Inhibitory Activity Against Human α‐ and Bacterial/Fungal β‐Carbonic Anhydrases.
Authors: Rami Marouan , Innocenti Alessio , Montero Jean‐Louis , Scozzafava Andrea , Winum Jean‐Yves , Supuran Claudiu T.
Published: December 2011

Attaching the rhodamine B moiety (I) to the scaffold of benzenesulfonamides (II) leads to the fluorescent sulfonamide carbonic anhydrase inhibitors (III).
ChemInform Abstract: New Pregnane Steroids from Formosan Red Alga Ceratodictyon spongiosum and Symbiotic Sponge Sigmadocia symbiotica.
Authors: Lu Chung‐Kuang , Wang Shang‐Kwei , Duh Chang‐Vih
Published: December 2011

Isolation and structure elucidation of four new pregnane steroids, ceratosteroids A—D, are described.
ChemInform Abstract: Chemoenzymatic Synthesis of C8‐Modified Sialic Acids and Related α2—3‐ and α2—6‐Linked Sialosides.
Authors: Yu Hai , Cao Hongzhi , Tiwari Vinod Kumar , Li Yanhong , Chen Xi
Published: December 2011

The sialic acid aldolase‐catalyzed enzymatic approach furnishes four C‐8 modified sialic acids.
ChemInform Abstract: Studies on the Selectivity Between Glycosylation and Intermolecular Aglycone Transfer of Thioglucoside in Synthesis of Lactose Derivatives.
Authors: Kato Marie , Hirai Go , Sodeoka Mikiko
Published: December 2011

In the reaction with the thioglycoside acceptor (II), electron‐donating groups on the galactose donor (I) can prevent the aglycone‐transfer (AGT) reaction.
ChemInform Abstract: Stereoselective Approaches to 2,3,6‐Trisubstituted Piperidines. An Enantiospecific Synthesis of Quinolizidine (‐)‐217A (XI)
Authors: Mancey Nicole C. , Sandon Nicolas , Auvinet Anne‐Laure , Butlin Roger J. , Czechtizky Werngard , Harrity Joseph P. A.
Published: December 2011

[employing a stepwise [3 + 3] anellation strategy and a piperidine 2,3‐cyclopropanation—ring opening reaction as the key steps].
ChemInform Abstract: The Discovery and Synthesis of JNJ 31020028, a Small Molecule Antagonist of the Neuropeptide Y Y2 Receptor.
Authors: Swanson Devin M. , et al. et al.
Published: December 2011

Small molecules as antagonists of the title receptor are designed and synthesized by focusing the chemistry efforts on three regions of the initial screening lead.
ChemInform Abstract: Discovery of GSK1997132B a Novel Centrally Penetrant Benzimidazole PPARγ Partial Agonist.
Authors: Sime Mairi , et al. et al.
Published: December 2011

Optimization of the PPARγ activity and in vivo pharmacokinetics of a non‐acidic benzimidazole derivative, identified as starting point for a centrally penetrant PPARγ partial agonist, leads to the identification of title compound (I), a potent and metabolically stable PPARγ partial agonist.
ChemInform Abstract: Properties of Ferromagnetic Superconductors
Authors: Aoki Dai , Hardy Frederic , Miyake Atsushi , Taufour Valentin , Matsuda Tatsuma D. , Flouquet Jacques
Published: December 2011

Review: 66 refs.
ChemInform Abstract: Research on Mechanism of Sulfur Poisoning in the Precious Metal Catalyst
Authors: Liu Guangjun , Zhu Hongmei
Published: December 2011

Review: 14 refs.
ChemInform Abstract: Control of Static and Dynamic Hydrophobicity of Solid Surface and Its Application
Authors: Nakajima Akira
Published: December 2011

Review: 107 refs.
ChemInform Abstract: “Guilty” Verdict — Evidence for the Noninnocence of Cyanide
Authors: Kaim Wolfgang
Published: December 2011

Review: [charge distribution in [Co(CN)3]6‐; ≈50 refs.].
ChemInform Abstract: Graphene‐Based Photocatalytic Composites
Authors: An Xiaoqiang , Yu Jimmy C.
Published: December 2011

Review: 135 refs.
ChemInform Abstract: The N‐Heterocyclic Carbene Chemistry of Transition‐Metal Carbonyl Clusters
Authors: Cabeza Javier A. , Garcia‐Alvarez Pablo
Published: December 2011

Review: ca. 100 refs.
ChemInform Abstract: Applications of Gold(I) Alkynyl Systems: A Growing Field to Explore
Authors: Lima Joao Carlos , Rodriguez Laura
Published: December 2011

Review: 119 refs.
ChemInform Abstract: Natural Products: An Evolving Role Role in Future Drug Discovery
Authors: Mishra Bhuwan B. , Tiwari Vinod K.
Published: December 2011

Review: 288 refs.
ChemInform Abstract: Synthesis of Some N‐[(p‐Methoxybenzene)sulfonyl]glutamamides
Authors: Banerjee Bhaskar , Banerjee Tanushree , Kumar Rajesh , Garg Atul Kumar , Kumar Avanish
Published: December 2011

Review: 17 refs.
ChemInform Abstract: Synthesis of 2,3‐Disubstituted Quinazolin‐4(3H)‐ones
Authors: Patil D. A. , Patil P. O. , Deshmukh P. K. , Patil G. B. , Shewale B. D. , Patil D. D. , Gattani S. G.
Published: December 2011

Review: 82 refs.
ChemInform Abstract: Rhodium‐Catalyzed Enantioselective Intermolecular Hydroacylation Reactions
Authors: Gonzalez‐Rodriguez Carlos , Willis Michael C.
Published: December 2011

Review: 55 refs.
ChemInform Abstract: Group‐13 Metal Mediated Organic Reactions
Authors: Dagorne Samuel , Bellemin‐Laponnaz Stephane
Published: December 2011

Review: 374 refs.
ChemInform Abstract: From Pesticides to Paint via Pharmaceuticals: The Evolution of New Zealand′s Applied Carbohydrate Chemistry R&D
Authors: Furneaux Richard H. , Evans Gary B.
Published: December 2011

Review: 34 refs.
ChemInform Abstract: Phosphazenes
Authors: Stewart Frederick F.
Published: December 2011

Review: 124 refs.
ChemInform Abstract: Phosphines and Related P—C‐Bonded Compounds
Authors: Allen D. W.
Published: December 2011

Review: 533 refs.
ChemInform Abstract: Palladium‐Based Innovative Catalytic Procedures: Designing New Homogeneous and Heterogeneous Catalysts for the Synthesis and Functionalization of N‐Containing Heteroaromatic Compounds
Authors: Batail Nelly , Genelot Marie , Dufaud Veronique , Joucla Lionel , Djakovitch Laurent
Published: December 2011

Review: 112 refs.
ChemInform Abstract: Synthetic Approaches for Quinoline and Isoquinoline
Authors: Pandeya S. N. , Tyagi Alka
Published: December 2011

Review: 43 refs.
ChemInform Abstract: Alkoxy—Arene Cleavage Using Ni Catalysts
Authors: McGlacken Gerard P. , Clarke Sarah L.
Published: December 2011

Review: 21 refs.
ChemInform Abstract: Myth or Reality? Fixation of Carbon Dioxide into Complex Organic Matter under Mild Conditions
Authors: Martin Ruben , Kleij Arjan W.
Published: December 2011

Review: 43 refs.
ChemInform Abstract: Cross‐Coupling Reactions of Organoboranes: An Easy Method for C—C Bonding
Authors: Suzuki Akira , Yamamoto Yasunori
Published: December 2011

Review: 48 refs.
ChemInform Abstract: Hypervalent Iodine Reagents in the Total Synthesis of Natural Products
Authors: Silva Luiz F. Jr. , Olofsson Berit
Published: December 2011

Review: 445 refs.
ChemInform Abstract: Synthesis of Terpolymers by Click Reactions
Authors: Altintas Ozcan , Tunca Umit
Published: December 2011

Review: 52 refs.
ChemInform Abstract: Sulfonyl and Phosphoryl Azides: Going Further Beyond the Click Realm of Alkyl and Aryl Azides
Authors: Kim Seok Hwan , Park Sae Hume , Choi Ji Ho , Chang Sukbok
Published: December 2011

Review: ca. 100 refs.
ChemInform Abstract: Steroid/Triterpenoid Functional Molecules Based on “Click Chemistry”
Authors: Hu J. , Lu J. R. , Ju Y.
Published: December 2011

Review: ca. 100 refs.
ChemInform Abstract: Reactions under the Click Chemistry Philosophy Employed in Supramolecular and Mechanostereochemical Systems
Authors: Fahrenbach Albert C. , Stoddart J. Fraser
Published: December 2011

Review: about 50 refs.
ChemInform Abstract: Ethyl Lactate as a Solvent: Properties, Applications and Production Processes — A Review
Authors: Pereira Carla S. M. , Silva Viviana M. T. M. , Rodrigues Alirio E.
Published: December 2011

Review: 100 refs.
ChemInform Abstract: Thieno[3,4‐b]pyrazines and Their Applications to Low Band Gap Organic Materials
Authors: Rasmussen Seth C. , Schwiderski Ryan L. , Mulholland Michael E.
Published: December 2011

Review: 100 refs.
ChemInform Abstract: Enantioselective Total Synthesis of (‐)‐FR182877
Authors: Suzuki Natsumi Tanaka , Suzuki Takahiro , Matsumura Takehiko , Hosoya Yousuke , Nakazato Tomoyuki , Nakada Masahisa
Published: December 2011

Review: about 50 refs.
ChemInform Abstract: Aggregation‐Induced Emisson
Authors: Hong Yuning , Lam Jacky W. Y. , Tang Ben Zhong
Published: December 2011

Review: 183 refs.
ChemInform Abstract: The Chemistry and Biology of Syringolins, Glidobactins and Cepafungins (Syrbactins)
Authors: Krahn Daniel , Ottmann Christian , Kaiser Markus
Published: December 2011

Review: 53 refs.
ChemInform Abstract: Drug Discovery for Improvement of Chronic Kidney Disease and Cardiovascular Disease
Authors: Ishizawa Keisuke
Published: December 2011

Review: 40 refs.
ChemInform Abstract: The MXCXXC Class of Metallochaperone Proteins: Model Studies
Authors: Shoshan Michal S. , Tshuva Edit Y.
Published: December 2011

Review: 76 refs.
1,8‐Diazabicyclo[5.4.0]undec‐7‐ene (DBU) Catalyzed Regiospecific and Diastereoselective Reaction of Chiral N‐(tert‐Butanesulfinyl)ketimines and α,β‐Unsaturated Trifluoromethyl Ketones
Authors: Zhang Fan , Liu Zhenjiang , Liu Jintao
Published: December 2011

The reaction of chiral N‐(tert‐butanesulfinyl)ketimines and α,β‐unsaturated trifluoromethyl ketones catalyzed by DBU was achieved under mild conditions. 1,2‐Addition products, precursors of chiral trifluoromethylated 1,3‐amino alcohols, were obtained diastereoselectively (dr value up to 95:5) in moderate yields (up to 76%). A possible catalytic cycle was proposed.
Synthesis of (−)‐Harzialactone A from a Readily Accessible Epoxy Chiral Building Block
Authors: He Lei , Zhang Shaomin , Wu Yikang , Li Yan
Published: December 2011

The antipode of (+)‐harzialactone A, an antitumor marine metabolite, was synthesized with the two stereogenic centers in the target structure taken from an optically active epoxy chiral building block.
Oxazine‐thione‐based Colorimetric Fluorescent OFF‐ON Probes for Hg2+ Recognition
Authors: Zhang Qianqian , Sun Ru , Ge Jianfeng , Xu Qingfeng , Li Najun , Lu Jianmei
Published: December 2011

Two colorimetric probes based on oxazine‐thione 1a and 1b for the detection of Hg2+ were designed and synthesized. The probe 1a exhibits about a 70‐fold enhancement in fluorescence and a color change after the addition of Hg2+ in acetonitrile/wate solvent. 1a was also highly selective to Hg2+ over other metal ions. Furthermore, DFT/TDDFT calculations were taken to explain the OFF‐ON emission response.
On the Absolute Configuration of Schweinfurthinol
Authors: Cui Shan , Wu Yikang , Gao Po
Published: December 2011

Through the chiral‐pool based synthesis of both enantiomers of schweinfurthinol, it has been proven that this natural product isolated from the seeds of Canarium schweinfurthii possesses an (S) configuration. The optical rotation data for pure schweinfurthinol is also updated.
Pd(OAc)2‐Catalyzed Tandem Reactions for the Synthesis of Indol‐3‐yl Substituted 1H‐Isochromenes and 1,2‐Dihydroisoquinolines
Authors: Wang Huan , Han Xiuling , Lu Xiyan
Published: December 2011

A Pd(II) catalyzed tandem reaction of o‐alkynylbenzaldehydes or o‐alkynylbenzaldimines with substituted indoles initiated by the intermolecular addition of indoles to the carbonyl or imine group followed by the nucleopalladation of an intramolecular alkyne and quenching the carbon‐palladium bond by protonolysis to regenerate the Pd(II) species was developed. The reaction can be carried out under mild conditions without the necessity of a redox system.
Well‐Defined Triblock Copolymer Containing Perfluorocyclobutyl Aryl Ether and Poly(acrylic acid) Segments
Authors: Lu Guolin , Zhang Sen , Li Yongjun , Huang Xiaoyu
Published: December 2011

A novel well‐defined triblock copolymer containing perfluorocyclobutyl group was prepared by the combination of mechanism transformation strategy, thermal cycloaddition [2Π+2π] polymerization and atom transfer radical polymerization (ATRP). Firstly, a macroinitiator with two ATRP initiating end groups was synthesized by thermal polymerization of 4,4′‐bis‐(trifluorovinyloxy)biphenyl (BTFVBP) and sequential end‐capping with a difunctional compound containing trifluorovinyl and ATRP initiation group. Secondly, this macroinitiator initiated ATRP of t‐butyl acrylate to synthesize PtBA‐b‐PBTFVBP‐b‐PtBA triblock copolymer. This copolymer was hydrolyzed to afford PAA‐b‐PBTFVBP‐b‐PAA amphiphilic triblock copolymer. This kind of fluorine‐containing well‐defined structure should benefit the study of self‐assembly behaviors.
Release of the Oxygen‐Evolving Complex Subunits from Photosystem II Membranes in Phosphorylation Condition under Light Stress
Authors: Chen Liangbing , Jia Hongying , Du Libo , Tian Qiu , Gao Yanli , Liu Yang
Published: December 2011

So far it is unclear whether the release of oxygen‐evolving complex (OEC) subunits including PsbO, PsbP, and PsbQ proteins is affected by the phosphorylation of photosystem II (PSII) membranes under light stress. In this work, different phosphorylated PSII membranes were obtained from spinach. Phosphorylation partially suppressed the release of PsbO, PsbP, and PsbQ proteins from PSII membranes under light stress. Reactive oxygen species including superoxide anion, hydrogen peroxide and hydroxyl radical, were involved in the release of a small part of PsbO protein, but not in the release of PsbP and PsbQ proteins in the non‐phosphorylated and phosphorylated PSII membranes. All of the results suggested that the release of PsbO, PsbP, and PsbQ proteins was partially regulated by phosphorylation in PSII membranes, and the role of reactive oxygen species in the release of OEC subunits in non‐phosphorylated PSII membranes was the same as in phosphorylated PSII membranes.
Facile Synthesis of Phosphorus N‐Fluoroalkanesulfonyl Amidines by Cu‐catalyzed One‐pot Three‐component Reaction
Authors: Zhang Zhenhua , Xiong Wanting , Gu Jiwei , Zhu Shizheng
Published: December 2011

In the presence of Cu(I) and triethyl amine, one‐pot three‐component reaction of fluoroalkanesulfonyl azides, alkynes and iminophosphoranes in CH2Cl2 at room temperature gave a novel class of fluorinated phosphorus amidines in good yields.
Polyfluoroalkylation of 2‐Aminothiazoles: Unexpected sp3 CCl Substitution under Mild Conditions
Authors: Qi Qingqing , Shen Qilong , Lü Long
Published: December 2011

An efficient, highly selective method for polyfluoroalkylation of 2‐aminothiazole derivatives was described. Specifically, a di‐polyfluoroalkylated derivative was produced when 2‐amino‐4‐chloromethylthiazole was reacted with perfluoroalkyl iodides under very mild conditions.
Reactivity of Cyclopentadienes Modified by Bis(3,5‐dimethylpyrazol‐1‐yl)methyl Group to W(CO)5THF
Authors: Zhang Xiaoyan , Liu Xiali , Song Haibin , Tang Liangfu
Published: December 2011

The reactions of the mixture of 1‐ and 2‐[2,2‐bis(3,5‐dimethylpyrazol‐1‐yl)‐1‐phenylethyl]‐1,3‐cyclopentadiene (bpzpcpH) and mixture of 1‐ and 2‐[2,2‐bis(3,5‐dimethylpyrazol‐1‐yl)‐1,1‐diphenylethyl]‐1,3‐cyclopentadiene (bpzdpcpH) with W(CO)5THF have been carried out. The former yields complex (bpzpcpH)W(CO)4, in which the bpzpcpH acts as a κ2‐(N,N) bidentate ligand, and the cyclopentadiene moiety does not participate in the coordination to the tungsten atom. While the latter gives complex (bpzdpcpH)W(CO)3, in which the cyclopentadiene moiety coordinates to the tungsten atom in η2‐fashion instead of general η5‐coordinated mode, causing bpzdpcpH to act as a tridentate κ3‐(π,N,N) ligand.
A Convenient Synthesis of Fluorine‐Containing trans‐1,2‐Cyclopropane Derivatives from Semistabilized Arsonium Ylides
Authors: Wu Kaicheng , Chen Yali , Ma Xuyan , Cao Weiguo , Zhang Hui , Chen Jie
Published: December 2011

The fluorine‐containing trans‐1,2‐cyclopropane derivatives 4ba–4dd were synthesized from the fluorine‐containing electron‐deficient alkenes 3a–3d with semistabilized arsonium ylides 2b–2d, in biphasic system of dichloromethane‐50% aqueous sodium hydroxide, generated in situ from the corresponding arsonium salts 1b–1d at room temperature in good yields with high stereoselectivity. The structure of fluorine‐containing trans‐1,2‐cyclopropane derivatives were also studied.
Determination of Hyoscine Butylbromide with Ag+ and Dihalogenated Fluorescein Dyes in Capsules by Resonance Rayleigh Scattering Method Coupled with Flow Injection Analysis Technique
Authors: Song Yanqi , Liu Shaopu , Liu Zhongfang , Hu Xiaoli
Published: December 2011

In pH 4.2–5.2 HOAc‐NaOAc buffer solution, Ag+ reacted with dihalogenated fluorescein (DHF) dyes to form a 1:2 anionic complex. This anionic complex could further react with hyoscine butylbromide (HBB) to form 1:1 ion‐association complex, which resulted in the significant enhancement of resonance Rayleigh scattering (RRS) intensity. Therefore, a novel method for the determination of HBB by resonance Rayleigh scattering (RRS) coupled with flow injection analysis (FIA) technique has been established. The present method had been applied to determine HBB in capsules and the results were in good agreement with those obtained by the literature method.
Microfabrication of polytetrafluoroethylene using SR direct etching
Authors: Yamamoto Shigeaki , Ukita Yoshiaki , Mochiji Kozo , Utsumi Yuichi
Published: December 2011

Polytetrafluoroethylene (PTFE) is a very attractive material for various fields because of its chemical resistance, insulation properties, and hydrophobic properties. However, it is difficult to fabricate PTFE microstructures with conventional techniques such as semiconductor processes or micromachining. We have succeeded in the fabrication of high‐aspect‐ratio microfluidics parts from PTFE by direct in‐vacuum photo‐etching utilizing synchrotron radiation (SR) at energy levels from 2 to 12 keV. This paper presents an analysis of the mechanisms of the PTFE microfabrication process and describes newly discovered processing characteristics of PTFE. © 2011 Wiley Periodicals, Inc. Electr Eng Jpn, 178(4): 49–54, 2012; Published online in Wiley Online Library (wileyonlinelibrary.com). DOI 10.1002/eej.21152