bluuebunny/crossref_metadata_2025_split huggingface dataset:
Advection errors in an orthogonal terrain‐following coordinate: idealized 2‐D experiments using steep terrains
Authors: Zou Xun , Li Yiyuan , Li Jinxi , Wang Bin 
Published: February 2016

AbstractThis study illustrated the importance of smoothed vertical layers and orthogonal grids in an orthogonal terrain‐following coordinate (an OTF‐coordinate) in reducing advection errors over steep terrain. Three coordinates, namely, classic terrain‐following coordinate, hybrid terrain‐following coordinate (HTF‐coordinate) and OTF‐coordinate, were employed in Schär‐type advection experiments for various terrains. The results demonstrated that the OTF‐coordinate could diminish the grids with high skewness in the HTF‐coordinate over steep terrain; the orthogonal grids share the same importance in reducing advection errors with smoothed vertical layers. Therefore, the advection errors in the OTF‐coordinate are considerably reduced than those in the corresponding HTF‐coordinate over steep terrain.
Triboluminescence and crystal structure of the centrosymmetric complex [Tb(NO3)2(Acac)(Phen)2]·H2O
Authors: Bukvetskii B. V. , Shishov A. S. , Mirochnik A. G. 
Published: February 2016

AbstractThe atomic structure of crystals of the complex [Tb(NO3)2(Acac)(Phen)2]·H2O, (AA – acetylacetonate anion, Phen – 1,10‐phenanthroline) characterized by an intensive luminescence and triboluminescence has been determined by means of an X‐ray structural analysis method. Centrosymmetric crystals have a monoclinic syngony: a = 11.2298(1), b = 9.6492(1), c = 13.2745(1) Å, β = 101.290(1), space group P2/n, Z = 2, ρcalc = 1.790 g/cm3. The crystal structure is represented by individual С29Н25N6O9Tb complexes linked through van der Waals interactions with clearly expressed cleavage planes. The Tb(III) atom coordination polyhedron reflects the state of a distorted square antiprism. The structural aspects of the suggested model of formation of the triboluminescent properties were considered and the role of the cleavage planes discussed. Copyright © 2016 John Wiley & Sons, Ltd.
Photoluminescence and thermoluminescence properties of Eu2+ doped and Eu2+,Dy3+ co‐doped Ba2MgSi2O7 phosphors
Authors: Sao Sanjay Kumar , Brahme Nameeta , Bisen D.P. , Tiwari Geetanjali 
Published: February 2016

AbstractIn this work, we report the preparation, characterization, comparison and luminescence mechanisms of Eu2+‐doped and Eu2+,Dy3+‐co‐doped Ba2MgSi2O7 (BMSO) phosphors. Prepared phosphors were synthesized via a high temperature solid‐state reaction method. All prepared phosphors appeared white. The phase structure, particle size, and elemental analysis were analyzed using X‐ray diffraction (XRD), transmission electron microscopy (TEM) and energy‐dispersive X‐ray (EDX) analysis. The luminescence properties of the phosphors were investigated by thermoluminescence (TL) and photoluminescence (PL). The PL excitation and emission spectra of Ba2MgSi2O7:Eu2+ showed the peak to be around 381 nm and 490 nm respectively. The PL excitation spectrum of Ba2MgSi2O7:Eu2+Dy3+ showed the peak to be around 341 nm and 388 nm, and the emission spectrum had a broad band around 488 nm. These emissions originated from the 4f6 5d1 to 4f7 transition of Eu2+. TL analysis revealed that the maximum TL intensity was found at 5 mol% of Eu2+ doping in Ba2MgSi2O7 phosphors after 15 min of ultraviolet (UV) light exposure. TL intensity was increased when Dy3+ ions were co‐doped in Ba2MgSi2O7:Eu2+ and maximum TL intensity was observed for 2 mol% of Dy3+. TL emission spectra of Ba1.95MgSi2O7:0.05Eu2+ and Ba1.93MgSi2O7:0.05Eu2+,0.02Dy3+ phosphors were found at 500 nm. TL intensity increased with UV exposure time up to 15 min, then decreased for the higher UV radiation dose for both Eu doping and Eu,Dy co‐doping. The trap depths were calculated to be 0.54 eV for Ba1.95MgSi2O7:0.05Eu2+ and 0.54 eV and 0.75 eV for Ba1.93MgSi2O7:0.05Eu2+,0.02Dy3+ phosphors. It was observed that co‐doping with small amounts of Dy3+ enhanced the thermoluminescence properties of Ba2MgSi2O7 phosphor. Copyright © 2016 John Wiley & Sons, Ltd. [Correction added on 5 April 2016, after first online publication: The following parts of the abstract have been edited for consistency. '4f65d1' has been corrected to '4f6 5d1', '4f7' has been corrected to '4f7', 'Ba1.95' has been corrected to 'Ba1.95' and 'Ba1.93' has been corrected to 'Ba1.93' respectively.]
Proteomic differences in recombinant CHO cells producing two similar antibody fragments
Authors: Sommeregger Wolfgang , Mayrhofer Patrick , Steinfellner Willibald , Reinhart David , Henry Michael , Clynes Martin , Meleady Paula , Kunert Renate 
Published: February 2016

ABSTRACTChinese hamster ovary (CHO) cells are the most commonly used mammalian hosts for the production of biopharmaceuticals. To overcome unfavorable features of CHO cells, a lot of effort is put into cell engineering to improve phenotype. “Omics” studies investigating elevated growth rate and specific productivities as well as extracellular stimulus have already revealed many interesting engineering targets. However, it remains largely unknown how physicochemical properties of the recombinant product itself influence the host cell. In this study, we used quantitative label‐free LC‐MS proteomic analyses to investigate product‐specific proteome differences in CHO cells producing two similar antibody fragments. We established recombinant CHO cells producing the two antibodies, 3D6 and 2F5, both as single‐chain Fv‐Fc homodimeric antibody fragments (scFv‐Fc). We applied three different vector strategies for transgene delivery (i.e., plasmid, bacterial artificial chromosome, recombinase‐mediated cassette exchange), selected two best performing clones from transgene variants and transgene delivery methods and investigated three consecutively passaged cell samples by label‐free proteomic analysis. LC‐MS‐MS profiles were compared in several sample combinations to gain insights into different aspects of proteomic changes caused by overexpression of two different heterologous proteins. This study suggests that not only the levels of specific product secretion but the product itself has a large impact on the proteome of the cell. Biotechnol. Bioeng. 2016;113: 1902–1912. © 2016 The Authors. Biotechnology and Bioengineering Published by Wiley Periodicals, Inc.
Validation of preoperative cardiopulmonary exercise testing-derived variables to predict in-hospital morbidity after major colorectal surgery
Authors: West M A , Asher R , Browning M , Minto G , Swart M , Richardson K , McGarrity L , Jack S , Grocott M P W , Challand C , Wan Lai C , Struthers R , Sneyd R , Psarelli E 
Published: February 2016

Abstract

Background
In single-centre studies, postoperative complications are associated with reduced fitness. This study explored the relationship between cardiorespiratory fitness variables derived by cardiopulmonary exercise testing (CPET) and in-hospital morbidity after major elective colorectal surgery.

Methods
Patients underwent preoperative CPET with recording of in-hospital morbidity. Receiver operating characteristic (ROC) curves and logistic regression were used to assess the relationship between CPET variables and postoperative morbidity.

Results
Seven hundred and three patients from six centres in the UK were available for analysis (428 men, 275 women). ROC curve analysis of oxygen uptake at estimated lactate threshold (V˙o2 at θ^L) and at peak exercise (V˙o2peak) gave an area under the ROC curve (AUROC) of 0·79 (95 per cent c.i. 0·76 to 0·83; P &lt; 0·001; cut-off 11·1 ml per kg per min) and 0·77 (0·72 to 0·82; P &lt; 0·001; cut-off 18·2 ml per kg per min) respectively, indicating that they can identify patients at risk of postoperative morbidity. In a multivariable logistic regression model, selected CPET variables and body mass index (BMI) were associated significantly with increased odds of in-hospital morbidity (V˙o2 at θ^L 11·1 ml per kg per min or less: odds ratio (OR) 7·56, 95 per cent c.i. 4·44 to 12·86, P &lt; 0·001; V˙o2peak 18·2 ml per kg per min or less: OR 2·15, 1·01 to 4·57, P = 0·047; ventilatory equivalents for carbon dioxide at estimated lactate threshold (V˙E/V˙co2 at θ^L) more than 30·9: OR 1·38, 1·00 to 1·89, P = 0·047); BMI exceeding 27 kg/m2: OR 1·05, 1·03 to 1·08, P &lt; 0·001). A laparoscopic procedure was associated with a decreased odds of complications (OR 0·30, 0·02 to 0·44; P = 0·033). This model was able to discriminate between patients with, and without in-hospital morbidity (AUROC 0·83, 95 per cent c.i. 0·79 to 0·87). No adverse clinical events occurred during CPET across the six centres.

Conclusion
These data provide further evidence that variables derived from preoperative CPET can be used to assess risk before elective colorectal surgery.
Diterpenoids of Gorgonian Corals: Chemistry and Bioactivity
Authors: Lei Hui 
Published: February 2016

During the past seven years, many complex and structurally unique secondary metabolites have been isolated from gorgonian corals. In this review, 244 diterpenoids isolated from gorgonian corals complete with their structures, names, references, and biological activities are reported. The article covers the literature published during the period from 2008 to 2014 with 95 citations.
Encapsulation of Living Cells within Giant Phospholipid Liposomes Formed by the Inverse‐Emulsion Technique
Authors: Chowdhuri Sampreeti , Cole Christian M. , Devaraj Neal K. 
Published: February 2016

AbstractLiposomes form spontaneously by the assimilation of phospholipids, the primary component of cell membranes. Due to their unique ability to form selectively permeable bilayers in situ, they are widely used as nanocarriers for drug and small‐molecule delivery. However, there is a lack of straightforward methodologies to encapsulate living microorganisms. Here we demonstrate the successful encapsulation of whole cells in phospholipid vesicles by using the inverse‐emulsion technique of generating unilamellar vesicles. This method of liposome preparation allows for a facile encapsulation of large biomaterials that previously was not easily attainable. Using Escherichia coli as a model organism, we found that liposomes can protect the bacterium against external protease degradation and from harsh biological environments. Liposomes prepared by the inverse‐emulsion method were also capable of encapsulating yeast and were found to be naturally susceptible to hydrolysis by enzymes such as phospholipases, thus highlighting their potential role as cell delivery carriers.
Dramatic improvement of severe acne pustolosa after adalimumab in a patient with ulcerative colitis
Authors: Rispo Antonio , Musto Dario , Imperatore Nicola , Testa Anna , Rea Matilde , Castiglione Fabiana 
Published: February 2016

Key clinical messageA 22‐year‐old male with extensive steroid‐dependent/azathioprine‐refractory ulcerative colitis and preexistent severe refractory acne pustolosa (AP) was successfully treated with adalimumab for both conditions. Severe AP could be considered a further indication, instead of a relative restriction, to anti‐TNFα in steroid‐dependent IBD patients needing therapy with this class of drugs.
Methyltransferases: Green Catalysts for Friedel–Crafts Alkylations
Authors: Tengg Martin , Stecher Harald , Offner Lisa , Plasch Katharina , Anderl Felix , Weber Hansjörg , Schwab Helmut , Gruber‐Khadjawi Mandana 
Published: February 2016

AbstractA set of S‐adenosyl‐l‐methionine (SAM) dependent methyltransferases has been characterized as versatile catalysts for the enzymatic Friedel–Crafts (alkylation) reaction. Although the substrate specificity of the enzymes range from high (in the case of SfmM2, SacF, and ORF19) to moderate (in the case of NovO and CouO), the cofactor spectrum is broad. Modified cofactors decorated with alkyl groups other than methyl were used for biocatalytic Friedel–Crafts alkylation, and conversions up to 99 % were achieved. In contrast to the classical chemical reaction the biotransformation is very selective and environmentally compatible.
DFT Study of Synergistic Catalysis of the Water‐Gas‐Shift Reaction on Cu–Au Bimetallic Surfaces
Authors: Saqlain Muhammad Adnan , Hussain Akhtar , Siddiq Dr Muhammad , Leenaerts Ortwin , Leitão Alexandre A. 
Published: February 2016

AbstractThe water‐gas‐shift reaction (WGSR) is an important industrial process that can be significantly enhanced at suitable catalyst surfaces. In this work, we investigate the catalytic behavior of metallic Cu(1 0 0) and bimetallic Cu–Au(1 0 0) surfaces. With density functional theory calculations, the variation in the Gibbs free energy (ΔG°), the activation barriers, and the rate constants for the WGSR are calculated. The variation in ΔG° for water dissociation shows that the process is spontaneous up to 520 K on the bimetallic surface and up to 229 K on the Cu(1 0 0) surface. The calculated rate constants for the process also show that the bimetallic surface is much more reactive than the Cu(1 0 0) surface. The calculated pressure–temperature phase diagram for water dissociation shows that the partial pressure of H2O required for water dissociation on the bimetallic surface is substantially lower than that on the Cu(1 0 0) surface at all the studied temperatures. Additionally, the calculations demonstrate that the kinetics of the water‐gas‐shift reaction is dominated by redox processes on both the surfaces.
Palladium Nanoparticles Encapsulated in a Silicalite‐1 Zeolite Shell for Size‐Selective Catalysis in Liquid‐Phase Solution
Authors: Liu Chang , Liu Jian , Yang Shuliang , Cao Changyan , Song Weiguo 
Published: February 2016

AbstractSize‐selective catalysis is of great significance in both fundamental research and industrial applications. One well‐known example is zeolite‐based catalysts, which show remarkable size selectivity in gas‐phase reactions. However, very few of these catalysts are realized in liquid‐phase solution. Herein, we report an efficient route to produce a composite composed of Pd nanoparticles encapsulated in a silicalite‐1 zeolite shell. This composite shows sharp size‐selective catalysis in the hydrogenation of olefin aldehydes in aqueous solution. Owing to the pore‐size limitation of the silicalite‐1 zeolite shell (0.53×0.56 nm), the catalyst shows high activity in the hydrogenation of 3‐methyl‐2‐butenal (0.38×0.62 nm) and cinnamaldehyde (0.54×0.92 nm) but no activity for the hydrogenation of 3,3‐diphenylacrylaldehyde (0.81×1.0 nm). A catalyst with this type of structure can be applied to load other metal nanoparticles and can serve as a useful platform to study heterogeneous size‐selective catalysis in liquid solution.
Nickel‐Based Dye‐Sensitized Photocathode: Towards Proton Reduction Using a Molecular Nickel Catalyst and an Organic Dye
Authors: van den Bosch Bart , Rombouts Jeroen A. , Orru Romano V. A. , Reek Joost N. H. , Detz Remko J. 
Published: February 2016

AbstractTo construct an efficient dye‐sensitized photo‐electrochemical tandem cell for hydrogen production, it is crucial to understand the working principles of both the photoanode and the photocathode. Herein, the anchoring of a proton‐reduction catalyst and an organic dye molecule on metal oxides is studied for the preparation of a photocathode. On TiO2, the Ni catalyst behaves as a good electrocatalyst (−250 μA cm−2) in acidic water (pH 2). The Ni catalyst and the organic dye were co‐immobilized on NiO to form a solely Ni‐based photocathode. The electron‐transfer steps were investigated by using various techniques (IR, UV/Vis, and fluorescence spectroscopy, and (photo)electrochemistry). Despite the observed successful single‐electron‐transfer steps between all of the components, photocatalysis did not yield any hydrogen gas. Possible bottlenecks that prevent photocatalytic proton reduction are poor electron transfer because of aggregation, charge recombination from the catalyst to the NiO, or instability of the catalyst after the first reduction.
Dioxygen Activation by a Macrocyclic Copper Complex Leads to a Cu2O2 Core with Unexpected Structure and Reactivity
Authors: Garcia‐Bosch Isaac , Cowley Ryan E. , Díaz Daniel E. , Siegler Maxime A. , Nam Wonwoo , Solomon Edward I. , Karlin Kenneth D. 
Published: February 2016

AbstractWe report the CuI/O2 chemistry of complexes derived from the macrocylic ligands 14‐TMC (1,4,8,11‐tetramethyl‐1,4,8,11‐tetraazacyclotetradecane) and 12‐TMC (1,4,7,10‐tetramethyl‐1,4,7,10‐tetraazacyclododecane). While [(14‐TMC)CuI]+ is unreactive towards dioxygen, the smaller analog [(12‐TMC)CuI(CH3CN)]+ reacts with O2 to give a side‐on bound peroxo‐dicopper(II) species (SP), confirmed by spectroscopic and computational methods. Intriguingly, 12‐TMC as a N4 donor ligand generates SP species, thus in contrast with the previous observation that such species are generated by N2 and N3 ligands. In addition, the reactivity of this macrocyclic side‐on peroxo‐dicopper(II) differs from typical SP species, because it reacts only with acid to release H2O2, in contrast with the classic reactivity of Cu2O2 cores. Kinetics and computations are consistent with a protonation mechanism whereby the TMC acts as a hemilabile ligand and shuttles H+ to an isomerized peroxo core.
ChemInform Abstract: DARST. VON PHOSPHINSAEURECHLORIDEN AUS PHOSPHINSAEUREAMIDEN
Authors: ELLIS K. , SMITH D. J. H. , TRIPPETT S. 
Published: February 2016

AbstractBeim Sättigen einer Lösung des Amids (I) in Benzol mit HCl entsteht das Säurechlorid (II) in guter Ausbeute.
ChemInform Abstract: MASSENSPEKTROMETRISCHE UNTERSUCHUNG VON OXID‐ UND SULFIDHALOGENIDEN DER UEBERGANGSMETALLE
Authors: SINGLETON DONALD L. , STAFFORD FRED E. 
Published: February 2016

AbstractDie massenspektrometrische Untersuchung von Mo0Cl4, W0Cl4, WSCl4, ReOCl4 und OsOCl4 zeigt, daß in Dampfform vorwiegend die entsprechenden Monomeren vorliegen.
ChemInform Abstract: STRUKTURMECHANISCHE PARAMETER UND CHEMISCHE STABILITAET KRISTALLISIERENDER GLAESER, DIE EINE UNTERSCHIEDLICHE THERMISCHE BEARBEITUNG DURCHLAUFEN
Authors: EREMEEVA A. S. , ROGOZHIN YU. V. , ZAIONTS L. A. 
Published: February 2016

AbstractKristallisierende Gläser mit Spodumen‐Zusammensetzung weisen nach bestimmter thermischer Behandlung eingefrorene elastische Spannungen auf, die eine Verformung der Selbsttorsion hervorrufen.
ChemInform Abstract: ELEKTRISCHE LEITFAEHIGKEIT ALKALIMETALLFREIER OXID‐FLUOROPHOSPHAT‐GLAESER
Authors: ARTYUSHKINA N. G. , BYRDINA V. A. , EVSTROP'EV K. K. , KHALILEV V. D. 
Published: February 2016

AbstractDie Leitfähigkeit von Gläsern der Systeme (I‐II) bei 200‐300°C wurde gemessen.
ChemInform Abstract: OPTISCHE SPEKTREN UND GLEICHGEWICHTSVERTEILUNG VON POLYSULFIDIONEN IN WAESSRIGER LOESUNG BEI 20 GRAD
Authors: GIGGENBACH W. 
Published: February 2016

AbstractDie optischen Absorptionsspektren von wäßrigen Polysulfidlösungen werden im pH‐Bereich von 6,8‐17,5 bei 20°C und bestimmten Ionenstärken 2 2,0 aufgenommen.
ChemInform Abstract: SELEKTIVE IONENAUSTAUSCHER MIT ISONITROSOACETAMID‐FUNKTIONSGRUPPEN 2. MITT. EIGENSCHAFTEN UND ANWENDUNG
Authors: SYKORA V. , DUBSKY F. 
Published: February 2016

AbstractIonenaustauscher mit der funktionalen Gruppe ‐NHCOCH=NOH besitzen stark selektive Eigenschaften für Pdztlonen.
ChemInform Abstract: ACIDITAET UND SAEURESTAERKE VON ZEOLITHKATALYSATOREN
Authors: IKEMOTO MISAKO , TSUTSUMI KAZUO , TAKAHASHI HIROSHI 
Published: February 2016

AbstractDer Einfluß der Vorbehandlungstemperatur, des Molverhältnisses SiO2/ Al2O3, der Kationenart, des Kationenaustauschverhältnisses zur Anzahl der Säureplätze und der Säurestärke auf die Zeolithkatalysatoren wird durch Titration mit Aminen untersucht.
ChemInform Abstract: UNTERSUCHUNG DER KONZENTRATIONSABHAENGIGKEIT DER EIGENSCHAFTEN VON SCHLACKENGLAESERN UND IHREN KRISTALLISATIONSPRODUKTEN DURCH SIMPLEXGITTERPLANUNG
Authors: PAVLUSHKIN N. M. , LISOVSKAYA G. P. , MANEVICH V. E. , CHEMLEVA T. A. 
Published: February 2016

AbstractDurch Bestimmung der Erweichungstemperaturen und Biegefestigkeiten von Gläsern und deren Kristallisationsprodukten des Systems CaO‐Al2O3‐SiO2 mit Zusatz von F2, Na2O und FeS an 28 Versuchspunkten werden Gleichungen 5 höherer Ordnung abgeleitet, die die Eigenschafts/Zusammensetzungs‐Abhängigkeit der Gläser des Sechsstoffsystems wiedergegeben.
ChemInform Abstract: SYSTEMATIK VON FLUOROSILICATEN UND FLUOROGERMANATEN 2. MITT. DIE VERBINDUNG CA12AL2(SIF6)4(SO4)3F16.45H2O (I)
Authors: HAJEK B. , BENDA F. 
Published: February 2016

AbstractFür die Titelverbindung (I) wird eine reproduzierbare Darstellungsmethode ange‐ 1 geben.
ChemInform Abstract: POTENTIOMETRISCHE MIKROBESTIMMUNG VON FLUOR IN ORGANISCHEN SUBSTANZEN
Authors: HELESIC L. 
Published: February 2016

AbstractEs wird die Titration von Fluoriden mit La‐, Gd‐, Pr‐ und Yb‐nitratlösungen im wäßrigen Medium und im 80%igen wäßrigem Äthanol mit und ohne HNO3‐ Zugabe unter Verwendung der selektiven Fluoridelektrode "Crytur" durchgefuhrt.
ChemInform Abstract: EMISSIONSEIGENSCHAFTEN AROMATISCHER AMINE IN LOESUNG, DAS PHENOXAZIN‐SYST.
Authors: HUBER J. ROBERT , MANTULIN W. W. 
Published: February 2016

AbstractDie Absorptions‐ und Lumineszenzeigenschaften von Phenoxazin und IO‐Phenylphenoxazin in Lösung werden untersucht.
ChemInform Abstract: DIE CHEMILUMINESZENZ VON TETRACHLORAETHYLEN‐CARBONAT UND AEHNLICHEN VERBINDUNGEN
Authors: MAULDING D. R. , ROBERTS B. G. 
Published: February 2016

AbstractDie cyclischen Carbonate (Ia) und insbesondere (Ib) sowie die analogen Verbindungen (II)‐(Va) und (Vb) ergeben mit Wasserstoffperoxid in Gegenwart von 9,10‐Bis‐phenyläthinylanthracen (VI) als Sensibilisator Chemilumineszenz‐Erscheinungen.
ChemInform Abstract: NICKEL‐KATALYSIERTE RK. UNTER BETEILIGUNG GESPANNTER SIGMA‐BINDUNGEN 4. MITT. NICKEL(0)‐KATALYSIERTE RK. VON METHYLENCYCLOPROPAN MIT OLEFINEN, ORIENTIERUNG UND STEREOCHEMIE
Authors: NOYORI R. , KUMAGAI Y. , UMEDA I. , TAKAYA H. 
Published: February 2016

AbstractMethylencyclopropan (I) reagiert mit dem [D2]Methylacrylat (II) unter Stickstoff in Gegenwart von Bis‐[acrylonitril]‐nickel(0) zum Addukt (III).
ChemInform Abstract: RK. MIT NITROSONIUMIONEN 2. MITT. RK. VON TRIPHENYLMETHYL‐, BENZHYDRYL‐ UND BENZYLAZID MIT NITROSONIUM‐VERBINDUNGEN
Authors: DOYLE MICHAEL P. , WIERENGA WENDELL 
Published: February 2016

AbstractDas Azid (I) ergibt in Acetonitril mit dem Tetrafluoroborat (II) über die Interme‐ g diärprodukte (III) und (IV) nach Zugabe von Wasser den Alkohol (V), das Amid (VI) sowie die Carbonylverbindungen (VII).
ChemInform Abstract: RK. MIT NITROSONIUMIONEN 3. MITT. RK. VON ALKYLAZIDEN MIT NITROSONIUM‐VERBINDUNGEN, EINFLUSS DES LOESUNGSMITTELS, ABFANGREAGENZIEN UND NITROSONIUM‐VERBINDUNGEN
Authors: DOYLE MICHAEL P. , WIERENGA WENDELL 
Published: February 2016

AbstractDas Azid (I) reagiert mit Nitrosoniumtetrafluoroborat in Acetonitril nach Zugabe von Wasser zum Amid (IIa) und dem Alkohol (IIIa) sowie den Carbonylverbindungen (IV).
ChemInform Abstract: STEREOCHEMIE UND REAKTIVITAET UNGESAETTIGTER VERBINDUNGEN 20. MITT. PRODUKTE DER DIEN‐KONDENSATION VON ISOPREN MIT ZIMTALDEHYD UND ZIMTSAEURE
Authors: KUGATOVA‐SHEMYAKINA G. P. , GRAMENITSKAYA V. N. , ISAEVA L. G. 
Published: February 2016

AbstractIsopren (I) reagiert mit Zimtaldehyd (IIa) in Gegenwart von Hydrochinon in Toluol bei 220°C zu einem Gemisch (Ausbeute 60%) der Addukte cis‐(IIIa), trans‐(IIIa), cis‐(IVa) und trans‐(IVa); in Gegenwart von BF3‐Ätherat in Benzol entsteht schon bei 20°C selektiv trans‐(IIIa) (56%).
ChemInform Abstract: MERCAPTOACETAT‐DERIVATE 1. MITT. RK. VON THIOCYANATOESSIGSAEUREESTERN MIT ALDEHYDEN
Authors: HAYASHI TOSHIO 
Published: February 2016

AbstractÄquimolare Reaktion der Ester (II) mit aromatischen Aldehyden, wie z.B. (I), in Gegenwart von NaH bei ‐5°C und anschließende Behandlung des Reaktions‐ gemisches mit trockenen Halogenwasserstoffsäuren, z.B. HCl, führt zu den Oxathiolanen (III) (Spuren ‐3 8% Ausbeute) und den Dihydrozirntsäureestern (IV) (45 ‐95%).
ChemInform Abstract: NEUARTIGE SPALTUNG DER C‐C‐DREIFACHBINDUNG
Authors: FUJITA HIROSHI , ENDO ROKURO , MURAYAMA KEISUKE , ICHII TAKESHI 
Published: February 2016

AbstractBei der Reaktion des Amidins (I) mit dem Diamin (II) in saurem Medium erfolgt nucleophile Addition am β‐C‐Atom der Acetylenbindung unter Bildung des Benzimidazols (III).