bluuebunny/crossref_metadata_2025_split huggingface dataset:
Long‐term variation of winter precipitation linked to sea‐surface heat fluxes around the Japan/East Sea
Authors: Fujita Mikiko , Takahashi Hiroshi G. , Ishizaki Noriko N. , Kimura Fujio 
Published: April 2014

AbstractWe revealed long‐term variation of winter precipitation at the northwest coast of Japan and its link to decadal variation of autumn‐to‐winter sea‐surface fluxes from the Japan/East Sea with observational data of sea‐surface fluxes, sea‐surface temperature (SST), and ocean heat content (OHC) data. Much precipitation was observed after 1995 because both SST and OHC were significantly higher in the Japan/East Sea. In a numerical experiment forced by the climatological SST that excluded the decadal change, the decadal variation of the land precipitation did not appear, suggesting that the decadal variation of the coastal precipitation is sensitive to SST.
Chemospecific Intramolecular Buchner Reaction Catalyzed by Copper(II) Acetylacetonate
Authors: Mo Shanyan , Xu Jiaxi 
Published: April 2014

AbstractA chemospecific intramolecular Buchner reaction of N‐benzyl‐2‐cyano‐2‐diazoacetamides catalyzed by inexpensive copper(II) acetylacetonate (acac) has been achieved to synthesize a variety of 9‐aza‐1‐cyanobicyclo[5.3.0]deca‐2,4,6‐trien‐10‐ones, 5,7‐bicyclic products. The methodology involves sole chemoselectivity, an inexpensive metal catalyst, broad substrate scope, and moderate to excellent yields.
Effect of Polydispersity Index on the Grinding Limits of Highly Concentrated Limestone Suspensions
Authors: Ohenoja Katja , Saari Juha , Illikainen Mirja , Breitung‐Faes Sandra , Kwade Arno , Niinimäki Jouko 
Published: April 2014

AbstractThe impact of polydispersity index (PDI) values and doses of two sodium polyacrylates on grinding limits and particle size distributions of highly concentrated limestone suspensions was studied. The results indicated that viscosity and agglomerate particle size, and thus the apparent grinding limit, depended on the sodium polyacrylate dose as well as PDI value of sodium polyacrylate. The higher the sodium polyacrylate dose, the lower the viscosity and the smaller the apparent grinding limit were. The smallest primary particle size, the smallest apparent grinding limit, the narrowest agglomerate particle size distribution, and the lowest viscosity curve were obtained with sodium polyacrylate having a low PDI.
Reduction of Surface Roughness and Rounding of Limestone Particles in a Stirred Media Mill
Authors: Rácz Ádám 
Published: April 2014

AbstractThe process and end‐use behavior of ground material not only depends on the particle size or specific surface but is also influenced by the particle shape. Particle shaping can be done in a stirred media mill if the stress intensity is not enough to break the particle, so mainly abrasion and chipping are carried out. Low‐stress intensity milling is presented in a dry stirred media mill to reveal the particle base rounding and surface roughness reduction. The main parameters of the product‐related stress model are connected to the descriptive parameters of particle shaping. Batch grinding of limestone particles with narrow size distribution was carried out with different milling parameters. The product‐related stress model can be used for the description of particle shaping.
Use of an Enhanced Stress Model for the Optimization of Wet Stirred Media Milling Processes
Authors: Breitung‐Faes Sandra , Kwade Arno 
Published: April 2014

AbstractWet grinding processes, especially in terms of nanoparticle production, are extremely energy intensive, and for hard and abrasive product materials, high grinding media wear is produced. In order to minimize energy consumption, the choice of the process parameters is crucial. The decision on the process parameters often depends on experience or a certain number of laboratory‐ or pilot‐scale experiments. Here, an enhanced stress energy model is used, which enables the prediction of optimum process parameters for inorganic materials in wet stirred media milling based on results for a different grinding material. The use of this model to select the process parameters is also valid with regard to grinding media wear: The grinding media wear reaches minimum values if the optimum parameters pertaining to the minimum specific energy are chosen based on this enhanced stress energy model, especially if soft products are ground.
Dry Fine Grinding with Jet Mills: Potentials of Energy Optimization
Authors: Schwarzwälder Sophie , Nied Roland , Sickel Hermann 
Published: April 2014

AbstractThe interest in finer, dry products has led to the development of more efficient jet milling processes. The first part of the paper describes the thermodynamic basic principles for generation and application of steam, and compressed gases. Practical experience has shown that in the aspired fineness range stabilization during grinding provides an enormous potential for improvement. Some selected examples demonstrate that the energy requirement can be reduced by a factor of more than two by suitable choice of stabilizers.
Site‐Specific Protection and Dual Labeling of Human Epidermal Growth Factor (hEGF) for Targeting, Imaging, and Cargo Delivery
Authors: Sonntag Michael H. , Ibach Jenny , Nieto Lidia , Verveer Peter J. , Brunsveld Luc 
Published: April 2014

AbstractWell‐defined human epidermal growth factor (hEGF) constructs featuring selectively addressable labels are urgently needed to address outstanding questions regarding hEGF biology. A protein‐engineering approach was developed to provide access to hEGF constructs that carry two cysteine‐based site‐specific orthogonal labeling sites in multi‐milligram quantities. Also, a site‐selective (de)protection and labeling approach was devised, which allows selective modification of these hEGF constructs. The hEGF, featuring three native disulfide bonds, was expressed featuring additional sulfhydryl groups, in the form of cysteine residues, as orthogonal ligation sites at both the N and C termini. Temporary protection of the N‐terminal cysteine unit, in the form of a thiazolidine ring, avoids interference with protein folding and enables sequential labeling in conjunction with the cysteine residue at the C terminus. Based on thus‐generated hEGF constructs, sequential and site‐specific labeling with a variety of molecular probes could be demonstrated, thus leading to a biological fully functional hEGF with specifically incorporated fluorophores or protein cargo and native cellular targeting and uptake profiles. Thus, this novel strategy provides a robust entry to high‐yielding access of hEGF and rapid and easy site‐specific and multifunctional dual labeling of this growth factor.
Highly Selective Detection of Nerve‐Agent Simulants with BODIPY Dyes
Authors: Barba‐Bon Andrea , Costero Ana M. , Gil Salvador , Harriman Anthony , Sancenón Félix 
Published: April 2014

AbstractTwo chromo‐fluorogenic probes, each based on the boron dipyrromethene core, have been developed for the detection of nerve‐agent mimics. These chemosensors display both a color change and a significant enhancement of fluorescence in the presence of diethylcyanophosphonate (DCNP) and diisopropylfluorophosphate (DFP). No interference from other organophosphorus compounds or acids has been observed. Two portable chemosensor kits have been developed and tested to demonstrate its practical application in real‐time monitoring.
Catalytic Asymmetric Assembly of Octahydroindolones: Divergent Synthesis of Lycorine‐type Amaryllidaceae Alkaloids (+)‐α‐Lycorane and (+)‐Lycorine
Authors: Sun Zhongwen , Zhou Mingtao , Li Xiang , Meng Xueling , Peng Fangzhi , Zhang Hongbin , Shao Zhihui 
Published: April 2014

AbstractWe report the first catalytic asymmetric approach to octahydroindolones and a divergent enantioselective synthesis of perhydroindole alkaloids, as exemplified by lycorine‐type Amaryllidaceae alkaloids (+)‐α‐lycorane and (+)‐lycorine, from a common intermediate by using a highly concise route. The assembly of octahydroindolones employs a catalytic enantioselective 1,4‐conjugate addition of nitro dienynes, followed by a TsOH‐catalyzed cascade synthesis of highly functionalized enones, and a diastereoselective intramolecular Michael addition.
Systematic Dissection of an Aminopyrrolic Cage Receptor for β‐Glucopyranosides Reveals the Essentials for Effective Recognition
Authors: Francesconi Oscar , Gentili Matteo , Nativi Cristina , Ardá Ana , Cañada F. Javier , Jiménez‐Barbero Jesús , Roelens Stefano 
Published: April 2014

AbstractA set of structures designed for the recognition of glucosides has been obtained by systematically destructuring a tripodal aminopyrrolic cage receptor that selectively recognizes octyl‐β‐D‐glucopyranoside (OctβGlc). NMR spectroscopy and isothermal titration calorimetry binding measurements showed that cleavage of one pillar of the cage was beneficial to the binding properties of the receptor, as long as two residual amino groups of the cleaved pillar were present. Removal of these two residual amino groups produced a dramatic loss of affinity for OctβGlc of the resulting monocyclic analogue of the parent cage receptor. A significant improvement in the binding ability was achieved by replacing one pillar with two aminopyrrolic hydrogen‐bonding arms, despite the loss of a preorganized structure. In contrast to the cage receptor, recognition of OctβGlc was observed, even in a competitive medium (30 % DMF in chloroform). Structural studies in solution, carried out through NMR spectroscopy and molecular modeling calculations, led to the elucidation of the 3D binding modes of the side‐armed monocyclic receptors; this highlighted the key role of the amino groups and demonstrated the occurrence of a rotaxane‐like complex, which featured the octyl chain of the glucoside threaded through the macrocyclic ring.
ChemInform Abstract: Structural and Spectroscopic Studies of Fluoroprotactinates.
Authors: De Sio Stephanie M. , Wilson Richard E. 
Published: April 2014

AbstractThe compounds (NH4)2PaF7 (I), K2PaF7 (II), Rb2PaF7 (III), Cs2PaF7 (IV), Na3PaF8 (V), (Me4N)2(H3O)PaF8 (VI), and (Me4N)PaF6 (VII) are synthesized from a 5 M aq.
ChemInform Abstract: Synthesis, Structure, and Luminescent Property of the Templated Borate [C9H14N]· [B5O6(OH)4].
Authors: Pan Chun‐Yang , Zhong Li‐Juan , Lu Jing , Li Da‐Guang , Zhao Feng‐Hua , Yang Hong‐Mei 
Published: April 2014

Abstract[BupyH]·[B5O6(OH)4] is prepared under solvothermal conditions from H3BO3, N‐butyl‐pyridinium (Bupy) bromide, Al(O‐iPr)3, H2O, and pyridine, (autoclave, 180 °C, 7 d).
ChemInform Abstract: Filling in the Holes: Structural and Magnetic Properties of the Chemical Pressure Stabilized LnMnxGa3 (Ln: Ho—Tm; x < 0.15).
Authors: Fulfer Bradford W. , McAlpin Jacob D. , Engelkemier Joshua , McCandless Gregory T. , Prestigiacomo Joseph , Stadler Shane , Fredrickson Daniel C. , Chan Julia Y. 
Published: April 2014

AbstractHigh‐quality single crystals of the title compounds are prepared from the constituent elements using Ga as a self‐flux (alumina crucible, 1150 °C, 5 h).
ChemInform Abstract: REBe2B5O11 (RE: Y, Gd): Rare‐Earth Beryllium Borates as Deep‐Ultraviolet Nonlinear‐Optical Materials.
Authors: Yan Xue , Luo Siyang , Lin Zheshuai , Yao Jiyong , He Ran , Yue Yinchao , Chen Chuangtian 
Published: April 2014

AbstractColorless block single crystals of the title compounds are obtained from a melt of Y2O3 or Gd2O3, BeO, B2O3, and Li2O (Pt crucible, 1100 °C).
ChemInform Abstract: Ba8Sn4S15: A Strong Second Harmonic Generation Sulfide with Zero‐Dimensional Crystal Structure.
Authors: Luo Zhong‐Zhen , Lin Chen‐Sheng , Zhang Wei‐Long , Zhang Hao , He Zhang‐Zhen , Cheng Wen‐Dan 
Published: April 2014

AbstractThe new title compound is synthesized by solid state reaction of Sn, BaS, and sulfur (graphite crucible, 1073 K, 48 h, <75% yield).
ChemInform Abstract: [Bi4]6‐ — The Zintl Anion with the Highest Charge per Atom Obtained from Solution.
Authors: Benda Christina B. , Faessler Thomas F. 
Published: April 2014

AbstractDark blue crystals of K6[Bi4](NH3)8 are obtained from a solution of the Zintl phase KBi in liquid NH3 in the presence of 18‐crown‐6 (‐70 °C, 3 months; 20‐30% yield).
ChemInform Abstract: Dicobalt‐μ‐oxo Polyoxometalate Compound, [(α2‐P2W17O61Co) 2O]14‐: A Potent Species for Water Oxidation, C—H Bond Activation, and Oxygen Transfer.
Authors: Barats‐Damatov Delina , Shimon Linda J. W. , Weiner Lev , Schreiber Roy E. , Jimenez‐Lozano Pablo , Poblet Josep M. , de Graaf Coen , Neumann Ronny 
Published: April 2014

AbstractThe highly reactive species [(α2‐P2W17O61Co) 2O]14‐ containing a nearly linear Co—O—Co moiety is prepared by oxidation of [α2‐P2W17O61Co II(H2O)]8‐ and characterized by single crystal XRD, 31 NMR, Raman, and UV/VIS spectroscopy, and DFT calculations.
ChemInform Abstract: Very Small (3—6 Atoms) Gold Cluster Catalyzed Carbon—Carbon and Carbon—Heteroatom Bond‐Forming Reactions in Solution.
Authors: Oliver‐Meseguer Judit , Leyva‐Perez Antonio , Corma Avelino 
Published: April 2014

AbstractSeveral gold‐catalyzed reactions are investigated regarding the role of catalytically active Au—clusters generated in situ.
ChemInform Abstract: Efficient Transesterification Resolution of 2‐(4‐Chlorophenyl)‐4‐hydroxytetrahydropyran with Magnetically Separable Immobilized Lipase.
Authors: Xue Ping , Kang Zhen‐Zhen , Lai Xiao‐Yong , Qu Guan‐Qun , Li Yuan‐Yuan 
Published: April 2014

AbstractLipase immobilized on a core—shell MnFe2O4@SiO2— (CH2)3—NH2 carrier exhibits excellent catalytic activity for resolving racemic pyranol (I) via transesterification using vinyl acetate.
ChemInform Abstract: Asymmetric Hydrogenation of β‐Keto Sulfonamides and β‐Keto Sulfones with a Chiral Cationic Ruthenium Diamine Catalyst.
Authors: Huang Xiao‐Fei , Zhang Shao‐Yun , Geng Zhi‐Cong , Kwok Chun‐Yuen , Liu Peng , Li Hai‐Yan , Wang Xing‐Wang 
Published: April 2014

AbstractThe highly efficient asymmetric reduction of title compounds (I), (III), and (V) using a phosphine‐free chiral Ru‐complex furnishing corresponding β‐hydroxy sulfonamides and ‐sulfones (II), (IV), and (VI), resp., is described.
ChemInform Abstract: Decatungstate Photocatalyzed Benzylation of Alkenes with Alkylaromatics.
Authors: Qrareya Hisham , Ravelli Davide , Fagnoni Maurizio , Albini Angelo 
Published: April 2014

AbstractThe direct benzylation of electrophilic alkenes with alkylbenzenes is achieved by decatungstate photocatalysis in a high ionic strength medium.
ChemInform Abstract: Rapid and Ecofriendly Esterification of Alcohols with 2‐Acylpyridazinones.
Authors: Kim Bo Ram , Sung Gi Hyeon , Ryu Ki Eun , Kim Jeum‐Jong , Yoon Yong‐Jin 
Published: April 2014

AbstractThe new method for the esterification of various aromatic and aliphatic alcohols occurs under solvent‐free conditions within short reaction times and is also applicable to mercaptoethanol (VII) as well as benzeneselenol (X).
ChemInform Abstract: The Development of N‐Aryl Trifluoroacetimidate‐Based Benzyl and Allyl Protecting Group Reagents.
Authors: Tsabedze Sinele B. , Kabotso Daniel E. K. , Pohl Nicola L. B. 
Published: April 2014

Abstractp‐Nitrophenyl substituted imidates (II) are efficient benzylating and allylating reagents in the presence of catalytic amounts of TmsOTf.
ChemInform Abstract: A Two‐Step Sequence to Ethyl α‐Fluorocyclopropanecarboxylates Through MIRC Reaction of Ethyl Dichloroacetate and Highly Regioselective Fluorination.
Authors: Zhang Min , Gong Yuefa , Wang Weizhou 
Published: April 2014

AbstractThe two‐step sequence yields monofluorinated cyclopropane derivatives which are of pharmaceutical interest due to their biological activities.
ChemInform Abstract: Dihaloiodoarenes: α,α‐Dihalogenation of Phenylacetate Derivatives.
Authors: Tao Jason , Tran Richard , Murphy Graham K. 
Published: April 2014

AbstractDiazoacetate derivatives react with Ph‐ICl2 or Tol‐IF2 to afford gem‐dichlorinated or gem‐difluorinated products in the presence of a Lewis base or Lewis acid, respectively.
ChemInform Abstract: Asymmetric Reduction of 2,2‐Dimethyl‐6‐(2‐oxoalkyl/oxoaryl)‐1,3‐dioxin‐4‐ones and Application to the Synthesis of (+)‐Yashabushitriol.
Authors: Fang Zhijia Amphi , Clarkson Guy J. , Wills Martin 
Published: April 2014

AbstractThe asymmetric transfer hydrogenation of various ketones (I) is achieved in high enantiomeric excess using a chiral ruthenium complex catalyst.
ChemInform Abstract: Amino Acid Intercalated Layered Double Hydroxide Catalyzed Chemoselective Methylation of Phenols and Thiophenols with Dimethyl Carbonate.
Authors: Subramanian Thirumeni , Dhakshinamoorthy Amarajothi , Pitchumani Kasi 
Published: April 2014

AbstractSixteen amino acids are intercalated into Mg‐Al layered double hydroxides by the reconstruction method and utilized as catalysts in the title reaction.
ChemInform Abstract: Tailoring the S‐Selectivity of 2‐Succinyl‐5‐enolpyruvyl‐6‐hydroxy‐3‐cyclohexene‐1‐carboxylate Synthase (MenD) from Escherichia coli.
Authors: Pohl Martina , et al. et al. 
Published: April 2014

AbstractS‐selective EcMenD variants of the thiamine diphosphate (TDP)‐dependent enzyme 2‐succinyl‐5‐enolpyruvyl‐6‐hydroxy‐3‐cyclohexene‐1‐carboxylate synthase from Escherichia coli (E.C.
ChemInform Abstract: A One‐Pot Asymmetric Synthesis of Homoallylic Amines via Indium‐Mediated Allylation of Hydrazones.
Authors: Lee Jun Hyuk , Nam Tae Kyu , Satyender Apuri , Jang Doo Ok 
Published: April 2014

AbstractOptimum reaction conditions are examined for the asymmetric addition of allyl iodide (III) to hydrazones which are prepared in situ from (I) and aldehydes (II).
ChemInform Abstract: Highly Diastereoselective Synthesis of Dispiro[1,4‐dithiane/dithiepane]bisoxindoles via Stevens Rearrangement.
Authors: Muthusamy Sengodagounder , Selvaraj Karuppu 
Published: April 2014

AbstractThe rhodium‐catalyzed reaction of oxindoles (I) and (IV) with diazooxindoles involves the formation of a sulfonium ylide intermediate.
ChemInform Abstract: Broensted Acid Catalyzed Enantioselective Indole Aza‐Claisen Rearrangement Mediated by an Arene CH—O Interaction.
Authors: Maity Pradip , Pemberton Ryan P. , Tantillo Dean J. , Tambar Uttam K. 
Published: April 2014

AbstractThe reaction tolerates a wide range of aromatic and heteroaromatic substituents at the allylic double bond and affords the products with high yields and enantioselectivities [cf.
ChemInform Abstract: Batch and Flow Photochemical Benzannulations Based on the Reaction of Ynamides and Diazo Ketones. Application to the Synthesis of Polycyclic Aromatic and Heteroaromatic Compounds.
Authors: Willumstad Thomas P. , Haze Olesya , Mak Xiao Yin , Lam Tin Yiu , Wang Yu‐Pu , Danheiser Rick L. 
Published: April 2014

AbstractA two‐stage tandem benzannulation/cyclization strategy for the synthesis of the title compounds is presented.
ChemInform Abstract: Molecular Iodine‐Mediated Cascade Reaction of 2‐Alkynylbenzaldehyde and Indole: An Easy Access to Tetracyclic Indoloazulene Derivatives.
Authors: Gawande Sachin D. , Kavala Veerababurao , Zanwar Manoj R. , Kuo Chun‐Wei , Huang Hsiu‐Ni , He Chiu‐Hui , Kuo Ting‐Shen , Yao Ching‐Fa 
Published: April 2014

AbstractThe synthesis of iodo‐substituted tetracyclic indole fused azulene derivatives is achieved by reaction of various phenylethynyl benzaldehydes and different indoles in the presence of molecular iodine.
ChemInform Abstract: A Three‐Way Switchable Process for Suzuki Cross‐Coupling, Hydrodehalogenation, or an Assisted Tandem Hydrodehalogenation and Suzuki Cross‐Coupling Sequence.
Authors: Sandtorv Alexander H. , Bjoersvik Hans‐Rene 
Published: April 2014

AbstractThe Suzuki reaction of 4,5‐iodoimidazole is thoroughly investigated.
ChemInform Abstract: Asymmetric Synthesis and Effect of Absolute Stereochemistry of YCZ‐2013, a Brassinosteroid Biosynthesis Inhibitor.
Authors: Oh Keimei , Yamada Kazuhiro , Yoshizawa Yuko 
Published: April 2014

AbstractThe four stereoisomers of YCZ‐2013 are synthesized and their effects on Arabidopses stem elongation is studied.
ChemInform Abstract: Enantioselective Synthesis of Coumarin Derivatives Catalyzed by Primary Amines.
Authors: Lee Yen‐Te , Das Utpal , Chen Yi‐Ru , Lee Chia‐Jui , Chen Chi‐Han , Yang Mei‐Chun , Lin Wenwei 
Published: April 2014

AbstractMichael addition reaction of ketones with coumarin derivatives in the presence of cinchona type catalyst provides optically active coumarins with excellent enantioselectivity.
ChemInform Abstract: Novel One‐Pot Synthesis of Xanthones via Sequential Fluoride Ion‐Promoted Fries‐Type Rearrangement and Nucleophilic Aromatic Substitution.
Authors: Fujimoto Yuuki , Itakura Ryohei , Hoshi Hiroki , Yanai Hikaru , Ando Yoshio , Suzuki Keisuke , Matsumoto Takashi 
Published: April 2014

AbstractThe title method allows the efficient conversion of 2‐fluorobenzoate derivatives into xanthones that have significant steric congestion around the C9 carbonyl and which are not readily available by conventional methods.
ChemInform Abstract: Copper(I) Iodide/Boron Trifluoride Etherate‐Cocatalyzed Aerobic Dehydrogenative Reactions Applied in the Synthesis of Substituted Heteroaromatic Imidazo[1,2‐a]pyridines.
Authors: Cai Zhong‐Jian , Wang Shun‐Yi , Ji Shun‐Jun 
Published: April 2014

AbstractThe oxidative cyclocondensation of 2‐aminopyridines with aryl alkyl ketones is investigated to provide a synthesis of imidazo[1,2‐a]pyridines.
ChemInform Abstract: Synthesis and Structure of Condensed Triazolo‐ and Tetrazolopyrimidines.
Authors: Sirakanyan Samvel N. , Geronikaki Athina , Spinelli Domenico , Hovakimyan Anush A. , Noravyan Azat S. 
Published: April 2014

AbstractHydrazino derivatives (I) and (VI) undergo ring closure reactions by treatment with triethyl orthoformate (II), formic acid (IV) and nitrous acid to give the title compounds in good yields.
ChemInform Abstract: Synthesis of Conformationally Restricted C2 Symmetric Macrodiolides via Head to Tail Dimerization of Carbonyl Ylides.
Authors: Muthusamy Sengodagounder , Sivaguru Manickasamy 
Published: April 2014

AbstractA simple procedure is developed for the synthesis of the title species via rhodium(II) carbenoid induced head to tail dimerization of carbonyl ylides having unactivated alkyne or alkene functionalities.
ChemInform Abstract: Synthesis and Suzuki—Miyaura Cross‐Coupling of Enantioenriched Secondary Potassium β‐Trifluoroboratoamides: Catalytic, Asymmetric Conjugate Addition of Bisboronic Acid and Tetrakis(dimethylamino)diboron to α,β‐Unsaturated Carbonyl Compounds.
Authors: Molander Gary A. , Wisniewski Steven R. , Hosseini‐Sarvari Mona 
Published: April 2014

AbstractEnantioenriched title compounds are synthesized via a new asymmetric, copper‐catalyzed addition of tetrahydroxydiboron to various α,β‐unsaturated amides, ketones, and esters in high yields and enantioselectivities.
ChemInform Abstract: Gold‐Catalyzed Hydroarylation of Aryl Alkynylphosphonates for the Synthesis of Phosphacoumarins.
Authors: Kim Cheol‐Eui , Ryu Taekyu , Kim Sanghyuck , Lee Kooyeon , Lee Chang‐Hee , Lee Phil Ho 
Published: April 2014

AbstractAn intramolecular hydroarylation of aryl alkynylphosphonates (I) and (III) promoted by a gold/silver catalyst affords phosphacoumarins (II) and (IV), resp., in moderate to good yields via a 6‐endo‐dig cyclization.
Thymochinon – das Gelbe vom Öl
Authors: Spiller Sandro , Mettke Peter , Siehl Hans‐Ullrich , Zeller Klaus‐Peter , Sicker Dieter , Berger Stefan 
Published: April 2014

AbstractThymochinon wurde durch Wasserdampfdestillation aus gelbem Schwarzkümmelöl gewonnen und durch Säulenchromatographie gereinigt. Alle analytischen Spektren sind vollständig entweder im Hauptteil oder in der supporting information wiedergegeben. Die NMR‐ sowie die Massenspektren werden eingehend interpretiert und mit theoretischen Berechnungen der 13C‐chemischen Verschiebungen verglichen. Das Projekt stellt eine Fortsetzung des Buches “Classics in Spectroscopy” von S. Berger und D. Sicker (Wiley‐VCH 2009) dar.