bluuebunny/crossref_metadata_2025_split huggingface dataset:
Radical Cation Initiated Cycloaddition Reactions Between 2‐Vinylindoles and β‐Substituted Enaminonitriles
Authors: F. Gürtler Christoph , Blechert Siegfried , Steckhan Eberhard 
Published: June 2010

AbstractElectron transfer initiated cycloaddition reactions between 2‐vinylindoles, acting as heterodienes, and β‐substituted enaminonitriles lead to different cycloaddition products depending on the substituents. Initiated by potentiostatically controlled electrolysis, an anellation of a cyclopropanated five‐membered ring system to the diene yielding cyclopropapyrrolo[1,2‐a]indoles can be achieved in just one reaction step. Interestingly, the formation of a cyclopropane ring system takes place in reaction mechanisms which involve radicals and radical cations. In addition to these products, [4 + 2]‐cycloaddition products with subsequent [1,4] dialkylamino shifts can also be formed. The formation of both products can be attributed to new reaction pathways via radical cation intermediates.
Synthesis of the 2‐Deoxyisomaltose Analogue of Acarbose by an Improved Route to Chiral Valieneamines
Authors: Tagmose Tina M. , Bols Mikael 
Published: June 2010

AbstractA 2‐deoxyisomaltose analogue of acarbose was stereoselectively synthesised in 11 steps with a total yield of 7% starting from 2,6‐dibromo‐2, 6‐dideoxy‐D‐mannono‐1,4‐lactone (6). The latter was reduced to the lactol, converted to the methyl glycoside (7) and hydrogenated to the methyl 6‐bromo‐2,6‐dideoxyglycoside (8). Benzylation of the hydroxy groups, elimination of bromine to a 5‐ene and Ferrier carbocyclisation gave (2S, 3R)‐2,3‐bisbenzyloxycyclohex‐5‐enone (12). 1, 2‐addition of benzyloxymethyl lithium at –110°C gave a 6:1 mixture of tertiary alcohols 13; the (1S) isomer was the major one. Reaction with trichloroacetyl isocyanate gave a carbamate 19, which, when dehydrated to the cyanate, spontaneously underwent [1,3] sigmatropic rearrangement to an isocyanate, which on addition of methanol gave the methylcarbamate 20. Basic hydrolysis of this compound gave (2R, 3R,5R)‐5‐amino‐1‐benzyloxymethyl‐2,3
Allylsilanes as Carbon Nucleophiles in the Palladium‐Catalyzed 1,4‐Oxidation of Conjugated Dienes
Authors: Castaño Ana M. , Persson B. Anders , Bäckvall Jan‐E. 
Published: June 2010

AbstractPalladium‐catalyzed oxidation of cyclic 1,3‐dienes 3, 5, 9, 11, and 13, with an allylsilane group in the side chain, led to an intramolecular 1,4‐syn‐addition to the conjugated diene through a carbocyclization. Acyclic trienesilanes 7 also underwent analogous 1,4‐oxidations. The reaction was carried out in acetone‐acetic acid (2:1) with a slight excess of LiCl. p‐Benzoquinone was employed as the oxidant and Li2PdCl4 as the catalyst. The reaction proceeds through an intramolecular trans addition of the allylsilane to a (π‐diene)palladium complex to produce a bicyclic (π‐allyl)palladium intermediate. Subsequent trans attack by chloride at the π‐allyl intermediate gives the product. The intermediate (π‐allyl)palladium complex was isolated and fully characterized. It was unambiguously demonstrated that the allylsilane had attacked the coordinated double bond trans to palladium (trans‐carbopalladation). The use of CuCl2 as the oxidant, instead of p‐benzoquinone, gave a less stereoselective addition, but interestingly, with the opposite stereochemistry.
Design of Phase‐Vanishing Reactions
Authors: Van Zee Nathan J. , Dragojlovic Veljko 
Published: June 2010

AbstractPhase‐vanishing reactions utilize a perfluorinated solvent as a liquid membrane to separate a substrate and a reagent. Since their introduction less than ten years ago, phase‐vanishing reactions have become a valuable alternative to reactions that require a slow addition of a reagent. A variety of experimental designs allow reactions to be carried out under anhydrous conditions, under photolytic conditions, under solvent‐free conditions, with a gas as a reagent, and under reflux.
Hydrolysis of Organophosphate Esters: Phosphotriesterase Activity of Metallo‐β‐lactamase and Its Functional Mimics
Authors: Tamilselvi A. , Mugesh Govindasamy 
Published: June 2010

AbstractThe phosphotriesterase (PTE) activity of a series of binuclear and mononuclear zinc(II) complexes and metallo‐β‐lactamase (mβl) from Bacillus cereus was studied. The binuclear complex 1, which exhibits good mβl activity, shows poor PTE activity. In contrast, complex 2, a poor mimic of mβl, exhibits much higher activity than 1. The replacement of Cl− ligands by OH− is important for the high PTE activity of complex 2 because this complex does not show any catalytic activity in methanol. The natural enzyme mβl from B. cereus is also found to be an inefficient catalyst in the hydrolysis of phosphotriesters. These observations indicate that the binding of β‐lactam substrates at the binuclear zinc(II) center is different from that of phosphotriesters. Furthermore, phosphodiesters, the products from the hydrolysis of triesters, significantly inhibit the PTE activity of mβl and its functional mimics. Although the mononuclear complexes 3 and 4 exhibited significant mβl activity, these complexes are found to be almost inactive in the hydrolysis of phosphotriesters. These observations indicate that the elimination of phosphodiesters from the reaction site is important for the PTE activity of zinc(II) complexes.
Cobalt‐Mediated Linear 2:1 Co‐oligomerization of Alkynes with Enol Ethers to Give 1‐Alkoxy‐1,3,5‐Trienes: A Missing Mode of Reactivity
Authors: Lebœuf David , Iannazzo Laura , Geny Anaïs , Malacria Max , Vollhardt K. Peter C. , Aubert Corinne , Gandon Vincent 
Published: June 2010

AbstractA variety of 1,6‐heptadiynes and certain borylalkynes co‐oligomerize with enol ethers in the presence of [CpCo(C2H4)2] (Cp=cyclopentadienyl) to furnish the hitherto elusive acyclic 2:1 products, 1,3,5‐trien‐1‐ol ethers, in preference to or in competition with the alternative pathway that leads to the standard [2+2+2] cycloadducts, 5‐alkoxy‐1,3‐cyclohexadienes. Minor variations, such as lengthening the diyne tether, cause reversion to the standard mechanism. The trienes, including synthetically potent borylated derivatives, are generated with excellent levels of chemo‐, regio‐, and diastereoselectivity, and are obtained directly by decomplexation of the crude mixtures during chromatography. The cyclohexadienes are isolated as the corresponding dehydroalkoxylated arenes. In one example, even ethene functions as a linear cotrimerization partner. The alkoxytrienes are thermally labile with respect to 6π‐electrocyclization–elimination to give the same arenes that are the products of cycloaddition. The latter, regardless of the mechanism of their formation, can be viewed as the result of a formal [2+2+2] cyclization of the starting alkynes with acetylene. One‐pot conditions for the exclusive formation of arenes are developed. DFT computations indicate that cyclohexadiene and triene formation share a common intermediate, a cobaltacycloheptadiene, from which reductive elimination and β‐hydride elimination compete.
Polyelectrolyte‐Assisted Formation of Molecular Nanoparticles Exhibiting Strongly Enhanced Fluorescence
Authors: Chandaluri Ch. G. , Patra A. , Radhakrishnan T. P. 
Published: June 2010

AbstractA polyelectrolyte‐assisted reprecipitation method is developed to fabricate nanoparticles of highly soluble molecules. The approach is demonstrated by using a zwitterionic diaminodicyanoquinodimethane molecule bearing remote ammonium functionalities with high solubility in water as well as organic solvents. Nanoparticles are prepared by injecting aqueous solutions of this compound containing an optimum concentration of sodium poly(styrenesulfonate) into methanol. The strong fluorescence exhibited by the compound in the aggregated state is reflected in the enhanced fluorescence of the polyelectrolyte complex in water. The nanoparticles formed in the colloidal state manifest even stronger fluorescence, which leads to an overall enhancement by about 90 times relative to aqueous solutions of the pure compound. The conditions for achieving the emission enhancement are optimized and a model for the molecular‐level interactions and aggregation effects is developed through a range of spectroscopy, microscopy, and calorimetry investigations and control experiments.
ChemInform Abstract: Chemical State and Properties of the Nb5Sn2Ga Grown by the Self‐Component Flux Method Using Tin as a Solvent.
Authors: Shishido Toetsu , Oku Masaoki , Okada Shigeru , Kudou Kunio , Ye Jinhua , Sasaki Takahiko , Watanabe Yousuke , Toyota Naoki , Horiuchi Hiroyuki , Fukuda Tsuguo 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Atom Insertion into the CoSb3 Skutterudite Host Lattice under High Pressure.
Authors: Takizawa Hirotsugu , Miura Keiichi , Ito Masayuki , Suzuki Tsutomu , Endo Tadashi 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Cubic CsCaH3 and Hexagonal RbMgH3: New Examples of Fluoride‐Related Perovskite‐Type Hydrides.
Authors: Gingl F. , Vogt T. , Akiba E. , Yvon K. 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Crystal Structure of Mo9Fe4.75Al0.25.
Authors: Stepien‐Damm J. , Salamakha P. , Wochowski K. , Suski W. 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: K3TaS4.
Authors: Herzog Sabine , Naether Christian , Bensch Wolfgang 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: (NH4)8 [Ce2(SO4)8]×4H2O.
Authors: Shan Yongkui , Huang Songping D. 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Crystal and Magnetic Structures of Nd2Ni2Sn and Dy2Ni2Sn Compounds.
Authors: Penc B. , Hofmann M. , Slaski M. , Starowicz P. , Szytula A. 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Study of the Ag—In—Te Ternary System. Part 1. Description of the Triangle Ag2Te—In2Te3—Te.
Authors: Bahari Zahra , Rivet Jacques , Legendre Bernard , Dugue Jerome 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Electrochemical Lithium and Sodium Intercalation into the Tantalum‐Rich Layered Chalcogenides Ta2Se and Ta2Te3.
Authors: Lavela P. , Conrad M. , Mrotzek A. , Harbrecht B. , Tirado J. L. 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Nickel‐Substituted Skutterudites: Synthesis, Structural and Electrical Properties.
Authors: Chapon L. , Ravot D. , Tedenac J. C. 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: ESR Studies of Nitrogen‐Centered Free Radicals. Part 51. Pyridyl‐Substituted Thioaminyl Stable Free Radicals: Isolation, ESR Spectra, and Magnetic Characterization.
Authors: Miura Yozo , Kurokawa Shinya , Nakatsuji Masaaki , Ando Kenjiro , Teki Yoshio 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Spectrophotometric Acidity Scale of Strong Neutral Broenstedt Acids in Acetonitrile.
Authors: Leito Ivo , Kaljurand Ivari , Koppel Ilmar A. , Yagupolskii Lev M. , Vlasov Vladislav M. 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: A Useful Modification of the Evans Auxiliary: 4‐Isopropyl‐5,5‐diphenyloxazolidin‐2‐one.
Authors: HINTERMANN T. , SEEBACH D. 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: A New Stereoselective Synthesis of Sterically Constrained Uncommon α,α′‐Dialkylated α‐Amino Acids. Part 2.
Authors: Porzi Gianni , Sandri Sergio 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Asymmetric Reactions of α‐Ketoacid‐Derived Hemiacetals: Stereoselective Synthesis of α‐Hydroxy Acids.
Authors: Pansare Sunil V. , Ravi R. Gnana 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Photo‐Induced Intermolecular Radical β‐Addition to Chiral α‐(Arylsulfinyl) Enones.
Authors: Mase Nobuyuki , Watanabe Yoshihiko , Toru Takeshi 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: One‐Pot Synthesis Using Supported Reagents System: Conversion of β‐Dicarbonyl Compounds to α‐Thiocyano‐β‐dicarbonyl Compounds Using CuBr2/Al2O3‐KSCN/SiO2.
Authors: Suzuki Yoshitada , Kodomari Mitsuo 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Nickel‐Catalyzed Silaborative Dimerization of Alkynes.
Authors: Suginome Michinori , Matsuda Takanori , Ito Yoshihiko 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Elimination Reactions of (Z)‐Thiophene‐ and (Z)‐Furan‐2‐carbaldehyde O‐Benzoyloximes. Effect of β‐Aryl Group upon the Nitrile‐Forming anti Transition State
Authors: Cho Bong Rae , Cho Nam Soon , Song Sang Hun , Lee Sang Kook 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Intramolecular Cyclization of Azides by Iminium Species. A Novel Method for the Construction of Nitrogen Heterocycles under Vilsmeier Conditions.
Authors: Majo Vattoly J. , Perumal Paramasivan T. 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Non‐Dehydrative Pinacol Rearrangement Using a Lewis Acid—Trialkyl Orthoester Combined System.
Authors: Kita Yasuyuki , Yoshida Yutaka , Mihara Sachiko , Furukawa Akihiro , Higuchi Kazuhiro , Fang Dai‐Fei , Fujioka Hiromichi 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Solid—Solid Catalysis by Inorganic Solid Acids: Pinacol Rearrangement over a Heteropoly Compound Consisting of Fine Particles.
Authors: Toyoshi Yasuo , Nakato Teruyuki , Okuhara Toshio 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Direct Hydrogenation of Carboxylic Acids to Corresponding Aldehydes Catalyzed by Palladium Complexes in the Presence of Pivalic Anhydride.
Authors: Nagayama Kazuhiro , Shimizu Isao , Yamamoto Akio 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Photoreductive Dechlorination of Chlorinated Benzene Derivatives Catalyzed by ZnS Nanocrystallites.
Authors: Wada Yuji , Yin Hengbo , Kitamura Takayuki , Yanagida Shozo 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Triphenylmethyl Fluoride as a Fluorinating Agent in Phosphorus—Halogen Chemistry.
Authors: Plack Volker , Goerlich Jens R. , Schmutzler Reinhard 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Efficient Method for Pinacol Coupling of Aromatic and Aliphatic Ketones by Using Titanium(II) Chloride and Zinc in the Presence of Pivalonitrile.
Authors: Mukaiyama Teruaki , Kagayama Akifumi , Shiina Isamu 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: N‐Difluoromethylation of Phenylazoles.
Authors: Lyga John W. , Patera Russell M. 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Theoretical Study of the Intercalation of Li into TiO2 Structures.
Authors: Benco Lubomir , Barras Jean‐Luc , Daul Claude Auguste , Deiss Erich 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: The Crystal Structure of Magnesium Dicarbide.
Authors: Karen P. , Kjekshus A. , Huang Q. , Karen V. L. 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Sodium Nickel Polyphosphate.
Authors: Erragh Fatima , Boukhari Ali , Sadel Abderahim , Holt Elizabeth M. 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.