bluuebunny/crossref_metadata_2025_split huggingface dataset:
Stereoselective Synthesis of (Z)‐β‐Fluoro‐α,β‐unsaturated Esters from (Z)‐2‐Fluoro‐1‐alkenyliodonium Salts.
Authors: Yoshida Masanori , Komata Ayumu , Hara Shoji 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
A Simple Radical Addition—Elimination Route to Geometrically Pure (E)‐Alkene and Chromanone Derivatives via β‐Nitrostyrene.
Authors: Jang Yeong‐Jiunn , Yan Ming‐Chung , Lin Yung‐Feng , Yao Ching‐Fa 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
A New Synthesis of Indole 5‐Carboxylic Acids and 6‐Hydroxy‐indole‐5‐carboxylic Acids in the Preparation of an o‐Hydroxylated Metabolite of Vilazodone.
Authors: Heinrich Timo , Boettcher Henning 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
Propargylic Sulfones Possessing a 2‐Nitroimidazole Function: Novel Hypoxic‐Cell Radiosensitizers with Intracellular Non‐Protein Thiol Depletion Ability.
Authors: Tanabe Kazuhito , Kojima Ryusuke , Hatta Hiroshi , Nishimoto Sei‐ichi 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
Reactions of Some ortho and para Halogenated Aromatic Nitriles with Ethylenediamine: Selective Synthesis of Imidazolines.
Authors: Crane Louis J. , Anastassiadou Maria , Stigliani Jean‐Luc , Baziard‐Mouysset Genevieve , Payard Marc 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
N‐Chlorosulfonyloxazolidin‐2‐ones: Synthesis, Structure, and Reactivity Toward Aminoesters.
Authors: Berredjem Malika , Winum Jean‐Yves , Toupet Loic , Masmoudi Ouafae , Aouf Nour‐Eddine , Montero Jean‐Louis 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
Synthesis of Chloro and Bromo Substituted 5‐(Indan‐1′‐yl)tetrazoles and 5‐(Indan‐1′‐yl)methyltetrazoles as Possible Analgesic Agents.
Authors: Bachar S. C. , Lahiri S. C. 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
Practical Synthesis of 3‐Bromo‐5,6‐dihydropyridin‐2‐ones via β,γ‐Unsaturated α‐Bromo‐ketene/imine Cycloaddition.
Authors: Cardillo Giuliana , Fabbroni Serena , Gentilucci Luca , Perciaccante Rossana , Piccinelli Fabio , Tolomelli Alessandra 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
Reverse Hydroxamate‐Based Selective TACE Inhibitors.
Authors: Kamei Noriyuki , Tanaka Tomohiro , Kawai Kentaro , Miyawaki Kyosei , Okuyama Akihiko , Murakami Yoshiko , Arakawa Yoshio , Haino Makoto , Harada Tatsuhiro , Shimano Masanao 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
An Efficient and Environmentally Friendly Method for Synthesis of 3,4‐Dihydropyrimidin‐2(1H)‐ones Catalyzed by Bi(NO3)3×5H2O.
Authors: Khodaei Mohammad Mehdi , Khosropour Ahmad Reza , Beygzadeh Mojtaba 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
Phosphotungstic Acid Catalyzed One‐Pot Synthesis of 5‐Alkoxycarbonyl‐4‐aryl‐3,4‐dihydropyrimidin‐2‐ones.
Authors: Jin Tong‐Shou , Xiao Jin‐Chong , Chen Yan‐Xue , Li Tong‐Shuang 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
Discovery of a Potent and Selective αvβ3 Integrin Antagonist with Strong Inhibitory Activity Against Neointima Formation in Rat Balloon Injury Model.
Authors: Iwama Seiji , Kitano Tomoko , Fukuya Fumiyo , Honda Yayoi , Sato Yuji , Notake Mitsue , Morie Toshiya 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
Palladium‐Catalyzed Tandem Allylation of 1,2‐Phenylenediamines with cis‐1,4‐Diacetoxy‐2‐butene.
Authors: Yang Shyh‐Chyun , Liu Pei‐Chin , Feng Wei‐Hao 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
A Hetero Diels—Alder Approach to the Synthesis of the First Angucyclinone and Angucycline 5‐Aza‐analogues.
Authors: Collet Sylvain C. , Remi Jean‐Francois , Cariou Claire , Laib Samia , Guingant Andre Y. , Nguyen Quang Vu Nguyen Quang Vu , Dujardin Gilles 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
[NH4]2Mn3(H2O)4 [Mo(CN)7]2×4H2O: Tuning Dimensionality and Ferrimagnetic Ordering Temperature by Cation Substitution.
Authors: Le Goff Xavier F. , Willemin Stephanie , Coulon Claude , Larionova Joulia , Donnadieu Bruno , Clerac Rodolphe 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
Preparation and Characterization of 6‐Molybdocobaltate and 6‐Molybdoaluminate Cobalt Salts. Evidence of a New Heteropolymolybdate Structure.
Authors: Martin Catherine , Lamonier Carole , Fournier Michel , Mentre Olivier , Harle Virginie , Guillaume Denis , Payen Edmond 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
Synthesis of Chiral 2,2′‐Dipyridylamines and Their Use in the Copper‐Catalyzed Asymmetric Allylic Oxidation of Cyclohexene.
Authors: Bolm Carsten , Frison Jean‐Cedric , Le Paih Jacques , Moessner Christian 
Published: September 2004

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A Concise Synthesis of a Rigid Isomannide‐Based Diphosphine Ligand and Structural Characterization of an Alkoxyphosphonium Intermediate.
Authors: Carcedo Cristina , Dervisi Athanasia , Fallis Ian A. , Ooi Liling , Malik K. M. Abdul 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
New P^O Ligand Grafted on Periodically Organized Mesoporous Silicas for One‐Pot Bifunctional Catalysis: Coupling of Base Catalyzed Knoevenagel Condensation with in situ Rh Catalyzed Hydrogenation.
Authors: Goettmann Frederic , Grosso David , Mercier Francois , Mathey Francois , Sanchez Clement 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
Amine‐Salt‐Controlled, Catalytic Asymmetric Conjugate Addition of Various Amines and Asymmetric Protonation.
Authors: Hamashima Yoshitaka , Somei Hidenori , Shimura Yuta , Tamura Toshihiro , Sodeoka Mikiko 
Published: September 2004

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An Efficient and Practical Procedure for Synthesis of 1,1‐Diacetates from Aldehydes Catalyzed by Zirconium Sulfate Tetrahydrate—Silica Gel.
Authors: Jin Tongshou , Feng Guoliang , Yang Mina , Li Tongshuang 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
Transformation of Zirconocene—Olefin Complexes into Zirconocene Allyl Hydride and Their Use as Dual Nucleophilic Reagents: Reactions with Acid Chloride and 1,4‐Diketone.
Authors: Fujita Kazuya , Yorimitsu Hideki , Shinokubo Hiroshi , Oshima Koichiro 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
Copper(I)‐Catalyzed Intramolecular Asymmetric [2 + 2] Photocycloaddition. Synthesis of Both Enantiomers of Cyclobutane Derivatives.
Authors: Sarkar Niladri , Nayek Abhijit , Ghosh Subrata 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
Simple and Efficient Method for the Synthesis of 1‐[2‐Dimethylamino‐1‐(4‐methoxy‐phenyl)‐ethyl]‐cyclohexanol Hydrochloride: (.+‐.) Venlafaxine Racemic Mixtures.
Authors: Kavitha Basappa C. V. , Rangappa K. S. 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
Design, Synthesis and Biological Evaluation of New Potent 5‐Nitrofuryl Derivatives as anti‐Trypanosoma cruzi Agents. Studies of Trypanothione Binding Site of Trypanothione Reductase as Target for Rational Design.
Authors: Aguirre Gabriela , Cabrera Eliana , Cerecetto Hugo , Di Maio Rossanna , Gonzalez Mercedes , Seoane Gustavo , Duffaut Adelina , Denicola Ana , Gil Maria J. , Martinez‐Merino Victor 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
Highly Effective Synthetic Methods for Substituted 2‐Arylbenzofurans Using [3,3]‐Sigmatropic Rearrangement: Short Syntheses of Stemofuran A and Eupomatenoid 6.
Authors: Miyata Okiko , Takeda Norihiko , Naito Takeaki 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
Benzimidazoles as New Potent and Selective DP Antagonists for the Treatment of Allergic Rhinitis.
Authors: Beaulieu Christian , Wang Zhaoyin , Denis Danielle , Greig Gillian , Lamontagne Sonia , O'Neill Gary , Slipetz Deborah , Wang Jennifer 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
Preparation of 4‐Anilino‐6‐aryl‐2H‐pyran‐2‐ones from Trilithiated Acetoacetanilides and Aromatic Esters.
Authors: Downs Jennifer R. , Grant Sally P. , Townsend Jessica D. , Schady Deborah A. , Pastine Stefan J. , Embree Mildred C. , Metz Clyde R. , Pennington William T. , Bailey Walsch Rosa D. , Beam Charles F. 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
Synthesis and Structure—Activity Relationships of 3‐Substituted 1,4‐Dihydro‐4‐oxo‐1‐(2‐thiazolyl)‐1,8‐naphthyridines as Novel Antitumor Agents.
Authors: Tsuzuki Yasunori , Tomita Kyoji , Sato Yuji , Kashimoto Shigeki , Chiba Katsumi 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
Synthesis and Evaluation of Spirobenzazepines as Potent Vasopressin Receptor Antagonists.
Authors: Xiang Min Amy , Chen Robert H. , Demarest Keith T. , Gunnet Joseph , Look Richard , Hageman William , Murray William V. , Combs Donald W. , Patel Mona 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
New Substituted Triaza‐Benzo[cd]azulen‐9‐ones as Promising Phosphodiesterase‐4 Inhibitors.
Authors: Devillers Ingrid , Pevet Isabelle , Jacobelli Henry , Durand Corinne , Fasquelle Veronique , Puaud Jocelyne , Gaudilliere Bernard , Idrissi Moulay , Moreau Francois , Wrigglesworth Roger 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
Stereocontrolled Glycosidations Using a Heterogeneous Solid Acid, Sulfated Zirconia, for the Direct Syntheses of α‐ and β‐Manno‐ and 2‐Deoxyglucopyranosides.
Authors: Toshima Kazunobu , Nagai Hideyuki , Kasumi Ken‐ichi , Kawahara Kanako , Matsumura Shuichi 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
Regioselective Isomerization of Highly Substituted 1‐Methylenecyclohexenepoxides to the Corresponding Allylic Alcohols. Influence of the Base and of the Protecting Groups.
Authors: Kirsch Stefan , Ackermann Olaf , Harms Klaus , Bach Thorsten 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
Synthesis and in vitro Inhibitory Activity on Human Platelet Aggregation of Novel Properly Substituted 4‐(1‐Piperazinyl)coumarins.
Authors: Di Braccio Mario , Grossi Giancarlo , Roma Giorgio , Garzia Signorello Maria , Leoncini Giuliana 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
Redox Properties of Linear and Cyclic Scaffolds Based on Di‐ and Tetraethynylethene
Authors: Gisselbrecht Jean‐Paul , Moonen Nicolle N. P. , Boudon Corinne , Nielsen Mogens Broendsted , Diederich Francois , Gross Maurice 
Published: September 2004

AbstractFor Abstract see ChemInform Abstract in Full Text.
Weakly aligned biological macromolecules in dilute aqueous liquid crystals
Authors: Annila Arto , Permi Perttu 
Published: September 2004

AbstractA biological macromolecule experiences a small degree of alignment in a dilute aqueous liquid crystal. The alignment is large enough to render reduced dipolar couplings readily observable and yet small enough to preserve qualities of high‐resolution solution‐state NMR spectra. Residual dipolar couplings are abundant and informative probes about the macromolecular structure, conformational changes and dynamics to explore the molecular mechanism of life. The description of the weak alignment and the interpretation of residual dipolar couplings within the theoretical framework are the prime objectives of this review. © 2004 Wiley Periodicals, Inc. Concepts Magn Reson Part A 23A: 22–37, 2004
A free surface updating methodology for marker function‐based Eulerian free surface capturing techniques on unstructured meshes
Authors: Dufour Steven , Malidi Ahamadi 
Published: September 2004

AbstractThe numerical modelling of non‐miscible free surface flows using an interface capturing strategy, where a marker function is used to identify each fluid, is popular in the computational science literature. As the marker function is advected by the fluid flow, the region of transition of the marker gets deformed, this being caused by the finite element discretization of the transport equation, the time‐integration scheme and the type of mesh used. The challenge is to update this region of transition at regular time intervals, without artificially creating or losing mass. A methodology is proposed to update the region of transition of the marker variable on unstructured meshes, using a local least‐squares‐based strategy which reduces numerical mass loss. It is shown that this technique proves to be an effective strategy for the updating of an advected marker variable. Copyright © 2004 John Wiley & Sons, Ltd.
Growth and evaluation of lanthanoids orthoniobates single crystals processed by a miniature pedestal growth technique
Authors: Octaviano E. S. , Reyes Ardila D. , Andrade L. H. C. , Siu Li M. , Andreeta J. P. 
Published: September 2004

AbstractOptimized conditions for the growth of lanthanoids orthoniobates (LnNbO4, Ln = lanthanide elements) single crystal minirods by a floating zone technique were investigated. Adequate atmospheres and pulling to feeding speed ratios to grow these materials were determined. Emphasis is given to the study of LaNbO4 because of their more favorable growth conditions and crystalline quality. This material can be efficiently doped with rare earth elements such as erbium. It grows with high crystallinity and its preferential growth direction is [1 1 0]. A preliminary evaluation of optical properties of Er3+‐doped LaNbO4 single crystal under the Judd‐Ofelt formalism indicates spectral parameters Ωt close and even larger than for Er3+ ions in YVO4. (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Characterization of a crystal grown from Ocimum Basilicum leaves and branches
Authors: Lima R. J. C. , Moreno A. J. D. , Diniz E. M. , Oléa R. S. G. , Sasaki J. M. , Mendes Filho J. , Freire P. T. C. , Pontes F. M. , Leite E. R. , Longo E. 
Published: September 2004

AbstractLeaves and branches of Ocimum Basilicum were dried, reduced to coarse powder and extracted in aqueous metanol and aqueous hexane. This paper discusses the X‐ray diffraction and FT‐Raman spectra measured at room temperature. The data obtained have been used to propose a general assignment of the vibrational fundamentals on the base of frequencies assigned in other related single crystals. From the results we can conclude that the crystal has a high symmetry. (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Crystal growth of the CdGa2(1‐x)Cr2xSe4 compounds by chemical transport method
Authors: Sagredo V. , de Chalbaud L. M. 
Published: September 2004

AbstractSingle crystals of CdGa2(1‐x)Cr2xSe4 compounds for 0 ≤ x ≤ 1 have been grown by using the chemical vapor transport technique in a closed system. The transporting agent was CdCl2 in a proportion of 0.75 mg/cc of capsule. The starting material was previously synthetized. The structural characterization on the crystals were done by powder x‐ray diffraction studies. The results show three different phases for various Cr concentration ranges: spinel structure for x ≥ 0.7, rombohedral for 0.6 ≥ x ≥ 0.5 and tetragonal for 0.4 ≥ x ≥ 0. That is, the chromium dilution in the CdCr2Se4 compound by Ga atoms produces very significant changes in the structural atomic arrangement. (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Correlation between growth orientation and growth temperature for bismuth tri‐iodide films
Authors: Cuña A. , Aguiar I. , Gancharov A. , Pérez M. , Fornaro L. 
Published: September 2004

AbstractThis paper reports the growth of bismuth tri‐iodide thick films intended for direct and digital X‐ray imaging. Films were grown by the vertical physical vapor deposition method, onto glass substrates 2″x 2″ in size, with gold previously deposited as rear electrode. The film thickness was up to 33 μm (±5 %). Optical microscopy and SEM were performed on the films and grain size resulted to be up to 40 μm. A strong correlation was found between the microcrystals growth orientation and the growth temperature. At low temperatures, microcrystals grow with their c axis parallel to the substrate, whereas at higher temperatures, they grow with their c axis perpendicular to the substrate. The higher the growth temperature, the lower the dark current of the film, and the higher the resistivity, which was from 1013 to 1015 Ωcm. A sensitivity to X‐rays of 6.9 nC/R.cm2 was measured irradiating the films with X‐rays from a mamographer. Film properties were correlated with the growth temperature, with previous results for bismuth tri‐iodide films and monocrystals and with data for films of alternative materials such as lead and mercuric iodide. (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
On the impulse circuit model for the single‐electron tunnelling junction
Authors: Hoekstra Jaap 
Published: September 2004

AbstractIn this paper, the impulse circuit model for the single‐electron tunnelling (SET) junction is discussed. Starting from well‐known results of the so‐called orthodox theory of single electronics, an equivalent circuit for the single‐electron tunnelling junction is ‘derived’ by examining the behaviour of simple circuits including a SET junction. In the impulse circuit model, the electron tunnelling event is basically implemented by an impulsive current source with value eδ(t−t0), which absorbs exactly the energy delivered by the sources that is not stored in the circuit. The equivalent circuit consisting of a charged capacitor in parallel with the impulsive current source does not contain a tunnel resistance, and the critical voltage is expressed in only local parameters. The impulse model is suitable for implementation in a circuit simulator; results of a SPICE simulation of the single‐electron pump are shown. Copyright © 2004 John Wiley & Sons, Ltd.
Pattern of Pax7 expression during myogenesis in the posthatch chicken establishes a model for satellite cell differentiation and renewal
Authors: Halevy Orna , Piestun Yogev , Allouh Mohammed Z. , Rosser Benjamin W.C. , Rinkevich Yuval , Reshef Ram , Rozenboim Israel , Wleklinski‐Lee Monika , Yablonka‐Reuveni Zipora 
Published: September 2004

AbstractThe paired‐box transcription factor Pax7 plays a critical role in the specification of satellite cells in mouse skeletal muscle. In the present study, the position and number of Pax7‐expressing cells found in muscles of growing and adult chickens confirm the presence of this protein in avian satellite cells. The expression pattern of Pax7 protein, along with the muscle regulatory proteins MyoD and myogenin, was additionally elucidated in myogenic cultures and in whole muscle from posthatch chickens. In cultures progressing from proliferation to differentiation, the expression of Pax7 in MyoD+ cells declined as the cells began expressing myogenin, suggesting Pax7 as an early marker for proliferating myoblasts. At all time points, some Pax7+ cells were negative for MyoD, resembling the reserve cell phenotype. Clonal analysis of muscle cell preparations demonstrated that single progenitors can give rise to both differentiating and reserve cells. In muscle tissues, Pax7 protein expression was the strongest by 1 day posthatch, declining on days 3 and 6 to a similar level. In contrast, myogenin expression peaked on day 3 and then dramatically declined. This finding was accompanied by a robust growth in fiber diameter between day 3 and 6. The distinctions in Pax7 and myogenin expression patterns, both in culture and in vivo, indicate that while some of the myoblasts differentiate and fuse into myofibers during early stages of posthatch growth, others retain their reserve cell capacity. Developmental Dynamics 231:489–502, 2004. © 2004 Wiley‐Liss, Inc.
Synthesis, X‐ray Characterisation and Studies of the New Ionic Complex [Bis(pyridin‐2‐yl) disulfide] Triiodide, Obtained by Oxidation of 2‐Mercaptopyridine with I2 − Implications in the Mechanism of Action of Antithyroid Drugs
Authors: Antoniadis Constantinos D. , Hadjikakou Sotiris K. , Hadjiliadis Nick , Kubicki Maciej , Butler Ian S. 
Published: September 2004

AbstractThe reaction of 2‐mercaptopyridine (C5H5NS or PYSH) with diiodine in a molar ratio of 1:2 in dichloromethane led to the oxidation and dimerization of the ligand and formation of [(PYS−PYSH)+·I3−]. The compound was characterised by elemental analysis, DTA‐TG, FT‐Raman, FT‐IR, UV/Vis and 1H NMR spectroscopy. The crystal structure of the complex has been determined by X‐ray diffraction at 293(2) K. The compound [(C5H4NS−SNC5H5)I3] is monoclinic with the space group P21 and a = 8.230(2) Å, b = 35.708(7) Å, c = 11.369(2) Å, β = 91.86(3)° and Z = 8. The results are discussed in relation to the mechanism of action of antithyroid drugs. The easy oxidation of PYSH by I2 to form the monocationic disulfide complex [(PYS−PYSH)+·I3−] is similar to the case of the antithyroid drug methimazole (MMI) and may indicate that PYSH might also possess antithyroid properties similar to those of MMI. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)
Reactivity of a Thiolate‐Bridged Dinuclear Ruthenium Complex with Nitrogenous Molecules: Spectroscopic Identification of a Labile Dinitrogen Complex
Authors: Sellmann Dieter , Prakash Raju , Heinemann Frank W. 
Published: September 2004

AbstractReactions of the thiolate‐bridged diruthenium complex [Ru(pybuS4)]2 (1) {pybuS42− = 2,6‐bis[(3,5‐di‐tert‐butyl‐2‐sulfanylphenyl)thiomethyl]pyridine(2−)} with small‐molecule ligands L afforded the corresponding mononuclear complexes [Ru(L)(pybuS4)] [L = H− (2); CH3CN (3); NH3 (4); CO (5); N2H4 (6); PMe3 (7); N3− (8)]. The molecular structures of 3, 4, and 5 exhibit pseudooctahedral geometry with two thiolate and two thioether donor atoms in a trans configuration. Complexes 2−8 exhibit a quasi‐reversible, one‐electron redox wave of the RuII/RuIII couple in the region between E1/2 = +0.214 and +0.460 V vs. NHE. Complex 1 reacts reversibly with N2 (60 bar) at 40 °C to give the labile dinitrogen complex [Ru(N2)(pybuS4)] (9). Complex 9 can also be obtained from the reaction between 3 and N2 (20 bar) at room temperature. Treatment of 4 with NO afforded the labile 19‐valence‐electron species [Ru(NO)(pybuS4)] (10) in solution, which could subsequently be converted to 9 upon highpressure reaction with N2 (20 bar). In contrast, the analogous reaction of 4 with NOBF4 results in the formation of the oxidized complex [Ru(NH3)(pybuS4)]BF4 (11), the structure of which was confirmed by X‐ray structure analysis. The carbonyl complex [Ru(CO)(pybuS4)] (5) could be reversibly protonated at the thiolate sulfur atom to give [Ru(CO)(pybuS4H)]BF4 (12). UV irradiation of 5 and 12 under N2 at −80 °C produced the short‐lived species 9 and 13, respectively, which were identified spectroscopically. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)
Triacylglycerol profiling by using chromatographic techniques
Authors: Buchgraber Manuela , Ulberth Franz , Emons Hendrik , Anklam Elke 
Published: September 2004

AbstractTriacylglycerols (TGs) make up the major part of naturally occurring fats and oils. The composition and fine structure of TGs determine to a large extent the functionality of fats and oils as food ingredients and the physiological effects of fats and oils as component of the human diet. Analysis of intact TGs is usually performed by chromatographic methods. In this article the application of gas‐liquid chromatography, high‐performance chromatography in normal and reversed phase mode, thin‐layer chromatography and supercritical fluid chromatography for the qualitative and quantitative determination of TGs is reviewed. Emphasis is put on those factors that are decisive for obtaining reliable quantitative data. Furthermore, techniques for the stereospecific analysis of the fatty acid distribution along the glycerol backbone of TGs are presented briefly.