bluuebunny/crossref_metadata_2025_split huggingface dataset:
NMR Spectroscopy and X‐Ray Characterisation of Cationic N‐Heteroaryl‐Pyridylamido ZrIV Complexes: A Further Level of Complexity for the Elusive Active Species of Pyridylamido Olefin Polymerisation Catalysts
Authors: Li Gang , Zuccaccia Cristiano , Tedesco Consiglia , D'Auria Ilaria , Macchioni Alceo , Pellecchia Claudio 
Published: November 2013

AbstractNew [(N−,N,N−)ZrR2] dialkyl complexes (N−,N,N−=pyrrolyl‐pyridyl‐amido or indolyl‐pyridyl‐amido; R=Me or CH2Ph) have been synthesised and tested as pre‐catalysts for ethene and propene polymerisation in combination with different activators, such as B(C6F5)3, [Ph3C][B(C6F5)4], [HNMe2Ph][B(C6F5)4] or solid AlMe3‐depleted methylaluminoxane (DMAO). Polyethylene (Mw>2 MDa and Mw/Mn = 1.3–1.6) has been produced if pre‐catalysts were activated with 1000 equivalents of DMAO (based on Al) [activity >1000 kgPE (mol[Zr] h mol atm)−1] or by using a higher pre‐catalyst concentration and a mixture of [HNPhMe2][B(C6F5)4] (1 equiv) and AliBu2H (60 equiv). In the case of propene polymerisation, activity has been observed only if pre‐catalysts were treated with an excess of AliBu2H prior to addition of DMAO, which led to highly isotactic polypropylene ([mmmm]>95 %). Neutral pre‐catalysts and ion pairs derived from their activation have been characterised in solution by using advanced 1D and 2D NMR spectroscopy experiments. The detection and rationalisation of intercationic NOEs clearly showed the formation of dimeric species in which some pyrrolyl or indolyl π‐electron density of one unit is engaged in stabilising the metal centre of the other unit, which relegates the counterions in the second coordination sphere. The solid‐state structure of the dimeric indolyl‐pyridyl‐amidomethylzirconium derivative, determined by X‐ray diffraction studies, points toward a weak Zr⋅⋅⋅η3‐indolyl interaction. It can be hypothesised that the formation of dimeric cationic species hampers monomer coordination (especially of less reactive α‐olefins) and that addition of AliBu2H is crucial to split the homodimers.
Planar and Nonplanar Free‐Base Tetraarylporphyrins: β‐Pyrrole Substituents and Geometric Effects on Electrochemistry, Spectroelectrochemistry, and Protonation/Deprotonation Reactions in Nonaqueous Media
Authors: Fang Yuanyuan , Bhyrappa P. , Ou Zhongping , Kadish Karl M. 
Published: December 2013

AbstractA series of planar and nonplanar free‐base β‐pyrrole substituted meso‐tetraarylporphyrins were characterized by electrochemistry, spectroelectrochemistry, and protonation or deprotonation reactions in neutral, acidic, and basic solutions of CH2Cl2. The neutral compounds are represented as H2(P), in which P represents a porphyrin dianion with one of several different sets of electron‐withdrawing or ‐donating substituents at the messo and/or β‐pyrrole positions of the macrocycle. The conversion of H2(P) to [H4(P)]2+ in CH2Cl2 was accomplished by titration of the neutral porphyrin with trifluoroacetic acid (TFA) while the progress of the protonation was monitored by UV/Vis spectroscopy, which was also used to calculate logβ2 for proton addition to the core nitrogen atoms of the macrocycle. Cyclic voltammetry was performed after each addition of TFA or TBAOH to CH2Cl2 solutions of the porphyrin and half‐wave potentials for reduction were evaluated as a function of the added acid or base concentration. Thin‐layer spectroelectrochemistry was used to obtain UV/Vis spectra of the neutral and protonated or deprotonated porphyrins under the application of an applied reducing potential. The magnitude of the protonation constants, the positions of λmax in the UV/Vis spectra and the half‐wave or peak potentials for reduction are then related to the electronic properties of the porphyrin and the data evaluated as a function of the planarity or nonplanarity of the porphyrin macrocycle. Surprisingly, the electroreduction of the diprotonated nonplanar porphyrins in acid media leads to H2(P), whereas the nonplanar H2(P) derivatives are reduced to [(P)]2− in CH2Cl2 containing 0.1 M tetra‐n‐butylammonium perchlorate (TBAP). Thus, in both cases an electrochemically initiated deprotonation is observed.
1,2,3‐Triazolo[4,5,‐e]furazano[3,4,‐b]pyrazine 6‐Oxide—A Fused Heterocycle with a Roving Hydrogen Forms a New Class of Insensitive Energetic Materials
Authors: Thottempudi Venugopal , Yin Ping , Zhang Jiaheng , Parrish Damon A. , Shreeve Jean'ne M. 
Published: November 2013

AbstractThe straightforward synthesis and energetic properties of a new class of energetic materials, 1,2,3‐triazolo‐ [4,5‐e]furazano[3,4‐b]pyrazine 6‐oxide and its energetic salts are described. They were characterized by IR and multinuclear NMR spectroscopy, elemental analysis, differential scanning calorimetry, and single‐crystal X‐ray diffraction are given. The X‐ray structures show that in the title compound, the hydrogen atom is bonded to the nitrogen in the pyrazine ring; however, in the salts, the negative charge is associated with the triazole nitrogen. Heats of formation for all compounds were calculated with the G2 method and then combined with experimentally determined densities to obtain detonation pressures (P) and velocities (D) by using EXPLO5 program. These new materials exhibit good densities and thermal stabilities, high heats of formation, acceptable detonation properties, and are insensitive to impact.
From Diphosphino‐Functionalized 1,3‐Dialkylimidazolium Cations to Imidazolones through Dehydrogenative CN Coupling
Authors: Ruiz Javier , Mesa Alejandro F. 
Published: November 2013

AbstractDiphosphino‐functionalized 1,3‐dialkylimidazolium salts react with KOH affording amine/formamide open‐chain products, which fully revert to the imidazolium cation by treatment with a variety of acids or are converted to 2‐imidazolones by noncatalyzed intramolecular dehydrogenative CN coupling, a process that is modulated by coordination of the phosphino functionalities to transition metals.
ChemInform Abstract: Thermoluminescent Dosimetry Properties of Double Doped Calcium Tetraborate (CaB4O7:Cu—Mn) Nanophosphor Exposed to γ‐Radiation.
Authors: Haghiri Maryam Erfani , Saion Elias , Soltani Nayereh , wan Abdullah Wan Saffiey , Navasery Manizheh , Saraee Khadijeh Rezaee Ebrahim , Deyhimi Najmeh 
Published: December 2013

AbstractThe title nanophosphor is synthesized from CaCl2, Na2B4O7, MnCl2, and CuCl2 in polyvinyl pyrrolidone solution at 48 °C.
ChemInform Abstract: Functionalization Based on the Substitutional Flexibility: Strong Middle IR Nonlinear Optical Selenides AXII4XIII5Se12.
Authors: Lin Hua , Chen Ling , Zhou Liu‐Jiang , Wu Li‐Ming 
Published: December 2013

AbstractMIMII4MIII5 Se12 (MI: K—Cs; MII: Mn, Cd; MIII: Ga, In) are prepared by melting of stoichiometric mixtures of the elements using MICl as flux (evacuated silica tubes, 1273 K, 4 d).
ChemInform Abstract: Preparation and Electrochemical Performance of LiNi0.5Mn0.5O2‐xFx (0 ≤ x ≤ 0.04) Cathode Material Synthesized with Hydroxide Co‐Precipitation for Lithium Ion Batteries.
Authors: Hu Chuanyue , Guo Jun , Wen Jin , Peng Yangxi , Chen Yan 
Published: December 2013

AbstractThe title solid solution is prepared by solid state reaction of stoichiometric mixtures of Ni0.5Mn0.5(OH)2, Li2CO3, and LiF (900—950 °C, 20—40 h).
ChemInform Abstract: Two‐Step Hydrothermal Process for Synthesis of F‐Doped BiVO4 Spheres with Enhanced Photocatalytic Activity.
Authors: Li Jun‐Qi , Guo Zhan‐Yun , Liu Hui , Du Juan , Zhu Zhen‐Feng 
Published: December 2013

AbstractPure BiVO4 spheres are prepared from mixtures of Bi(NO3)3 dissolved in HNO3 and NH4VO3 dissolved in NaOH solution (autoclave, microwave irradiation, 180 °C, 3 h).
ChemInform Abstract: Special ∞1[OPb2] Chains and ∞1[O2Pb3] Ribbons Based on OPb4 Anion‐Centered Tetrahedra in Pb2(O4Pb8) (BO3)3Br3 and Pb2(O8Pb12) (BO3)2Br6.
Authors: Dong Lingyun , Pan Shilie , Wang Ying , Yu Hongwei , Dong Xiaoyu , Han Shujuan , Zhang Min 
Published: December 2013

AbstractThe crystal structures of the new compounds (IV) and (V) are determined by single crystal XRD.
ChemInform Abstract: Crystalline and Glassy Phases in the Cs/Bi/As/S System.
Authors: Bera Tarun K. , Iyer Ratnasabapathy G. , Malliakas Christos D. , Kanatzidis Mercouri G. 
Published: December 2013

AbstractThe new crystalline compounds (V) and (VI) are obtained using fluxes with low As content.
ChemInform Abstract: Enantioselective Synthesis of Quaternary Carbon Stereogenic Centers Through Copper‐Catalyzed Conjugate Additions of Aryl‐ and Alkylaluminum Reagents to Acyclic Trisubstituted Enones.
Authors: Dabrowski Jennifer A. , Villaume Matthew T. , Hoveyda Amir H. 
Published: December 2013

AbstractThe title reaction allows a new, efficient, and widely applicable method to prepare ketones bearing an all‐carbon quaternary stereogenic center at β position.
ChemInform Abstract: Lewis Base Directed Cycloaddition Reactions of 2‐Pyrones and Alkynylaluminum Reagents.
Authors: Crepin Damien F. , Harrity Joseph P. A. 
Published: December 2013

AbstractIn situ prepared alkynylaluminum derivatives are used as novel 2π compounds in [4 + 2] cycloadditions with 2‐pyrans bearing amides or N‐heteroarenes as directing groups.
ChemInform Abstract: Direct Esterification of Carboxylic Acids with Alcohols Catalyzed by Iron(III) Acetylacetonate Complex.
Authors: Weng Shiue‐Shien , Chen Fong‐Kuang , Ke Chih‐Shuch 
Published: December 2013

AbstractEsterification catalyzed by iron(III) acetylacetonate does not only offer important advantages such as recoverability of the catalyst and inexpensive starting material, but can also be applied to a variety of primary and secondary alcohols and complex carboxylic acids including unmasked α‐hydroxyacid, heterocyclic, and N‐protected amino acids without the need for any dehydration reagent.
ChemInform Abstract: Alkylation and Ring Opening of Perfluoroalkyl‐ and Perfluoroaryl‐Substituted 2‐Siloxycyclopropanecarboxylates Yielding Fluorinated γ‐Oxo Esters or β,γ‐Unsaturated Ketones.
Authors: Gladow Daniel , Reissig Hans‐Ulrich 
Published: December 2013

AbstractDeprotonation of title compounds (I) and subsequent alkylation furnishes C1‐alkylated cyclopropanes (III) with high diastereoselectivity.
ChemInform Abstract: Lewis Acid‐Catalyzed Regioselective Synthesis of Chiral α‐Fluoroalkyl Amines via Asymmetric Addition of Silyl Dienolates to Fluorinated Sulfinylimines.
Authors: Liu Yingle , Liu Jiawang , Huang Yangen , Qing Feng‐Ling 
Published: December 2013

AbstractThe asymmetric addition of silyl dienolates (II) to sulfinylimines (I) in the presence of catalytic amounts of AgBF4 leads to the α‐adducts (III) as major products, whilst the use of Tms‐O‐Tf as catalyst affords predominantly the γ‐adducts (IV).
ChemInform Abstract: Copper‐Catalyzed Synthesis of α,β‐Unsaturated Acylamides via Direct Amidation from Cinnamic Acids and N‐Substituted Formamides.
Authors: Yan Hong , Yang Hailong , Lu Linhua , Liu Defu , Rong Guangwei , Mao Jincheng 
Published: December 2013

AbstractAn efficient synthesis of α,β‐unsaturated acylamides via copper‐catalyzed direct amidation between readily available cinnamic acids and N‐substituted formamides is reported for the first time.
ChemInform Abstract: Reaction of Trisubstituted Alkenes with Iron Porphyrin Carbenes: Facile Synthesis of Tetrasubstituted Dienes and Cyclopentadienes.
Authors: Wang Peng , Liao Saihu , Wang Sunewang R. , Gao Run‐Duo , Tang Yong 
Published: December 2013

AbstractA carbene transfer reaction to trisubstituted alkenes (I) and (V) mediated by iron‐porphyrin catalysis is realized based on an ylidic approach.
ChemInform Abstract: Sandmeyer Trifluoromethylation of Arenediazonium Tetrafluoroborates.
Authors: Danoun Gregory , Bayarmagnai Bilguun , Gruenberg Matthias F. , Goossen Lukas J. 
Published: December 2013

AbstractThe newly developed Sandmeyer trifluoromethylation is applicable to differently substituted arenediazonium salts.
ChemInform Abstract: Synthesis of Nitroalkenes Involving a Cooperative Catalytic Action of Iron(III) and Piperidine: A One‐Pot Synthetic Strategy to 3‐Alkylindoles, 2H‐Chromenes and N‐Arylpyrrole
Authors: Jalal Swapnadeep , Sarkar Soumen , Bera Krishnendu , Maiti Sukhendu , Jana Umasish 
Published: December 2013

AbstractFor the first time the preparation of nitroalkenes involving a cooperative catalyst is presented.
ChemInform Abstract: Development of Second Generation Gold‐Supported Palladium Material with Low‐Leaching and Recyclable Characteristics in Aromatic Amination.
Authors: Arisaw Mitsuhiro , et al. et al. 
Published: December 2013

AbstractThe newly prepared catalyst is tested in ligand‐free Buchwald—Hartwig cross‐coupling reactions of aryl halides with primary and secondary amines.
ChemInform Abstract: Highly Enantioselective Synthesis of N‐Protected β‐Amino Malonates Catalyzed by Magnetically Separable Heterogeneous Rosin‐Derived Amino Thiourea Catalysts: A Stereocontrolled Approach to β‐Amino Acids.
Authors: Zhu Hao , Jiang Xianxing , Li Xinghua , Hou Chen , Jiang Yu , Hou Ke , Wang Rui , Li Yanfeng 
Published: December 2013

AbstractBoth enantiomers of the catalyst can be used with comparable results.
ChemInform Abstract: The Supersilyl Group as a Carboxylic Acid Protecting Group: Application to Highly Stereoselective Aldol and Mannich Reactions.
Authors: Tan Jiajing , Akakura Matsujiro , Yamamoto Hisashi 
Published: December 2013

AbstractThe silyl group ‐Si(SiEt3)3 is used for the first time as stable and effective protecting group in the title reactions.
ChemInform Abstract: A Novel Copper‐Catalyzed Synthesis of Functionalized Alkynyl Imidates and Alkynyl Thioimidates.
Authors: Yavari Issa , Nematpour Manijeh 
Published: December 2013

AbstractThe reaction of acetonitrile with benzylalcohols or benzylmercaptans generates trichloroimidates which undergo a Cu‐catalyzed reaction with terminal alkynes to give the title compounds.
ChemInform Abstract: Calcined Eggshell (CES): An Efficient Natural Catalyst for Knoevenagel Condensation under Aqueous Condition.
Authors: Patil Suresh , Jadhav Swati D. , Deshmukh M. B. 
Published: December 2013

AbstractA highly efficient, green, and mild method for the Knoevenagel condensation of aromatic aldehydes with active methylene compounds is developed.
ChemInform Abstract: Palladium—Poly(3‐aminoquinoline) Hollow‐Sphere Composite: Application in Sonogashira Coupling Reactions.
Authors: Islam Rafique Ul , Mahato Sanjit K. , Shukla Sudheesh K. , Witcomb Michael J. , Mallick Kaushik 
Published: December 2013

AbstractIn general aryl iodides and bromides can be applied with iodide leading to the products with higher yields.
ChemInform Abstract: N,N′‐Dioxide‐Magnesium Ditriflate Complex‐Catalyzed Asymmetric α‐Hydroxylation of β‐Keto Esters and β‐Keto Amides.
Authors: Yin Chengkai , Cao Weidi , Lin Lili , Liu Xiaohua , Feng Xiaoming 
Published: December 2013

AbstractChiral N,N‐dioxide magnesium complexes are described as efficient catalysts for the α‐hydroxylation of cyclic 1‐tetralone derived β‐keto esters.
ChemInform Abstract: Chemo‐, Regio‐ and Stereoselective Tricyclohexylphosphine‐Catalyzed [3 + 2] Cycloaddition of Enynes with [60]Fullerene Initiated by 1,4‐Michael Addition: Synthesis of Cyclopenteno[60]fullerenes and Their Electrochemical Properties.
Authors: Tseng Po‐Yen , Chuang Shih‐Ching 
Published: December 2013

AbstractThe target compounds exhibit comparable or higher LUMO energy levels than a typical n‐type material, [6,6]‐phenyl‐C61‐butyric acid methyl ester.
ChemInform Abstract: Regioselective Bromination of Tetronic Acid‐Derived γ‐Lactones and Metal‐Catalyzed Post‐Functionalization: An Efficient Access to New γ‐Ylidenetetronate Derivatives.
Authors: Iikawa Shinya , Chopin Nicolas , Pilet Guillaume , Bouillon Jean‐Philippe , Medebielle Maurice 
Published: December 2013

AbstractThe bromination of several methyl and benzyl γ‐ylidenetetronates, which are prepared following literature procedures, is examined and a preliminary reactivity study of these bromination products in further reactions is performed.
ChemInform Abstract: Synthesis of 3‐(5‐Methylthiophen‐2‐yl)coumarins and Their Photochromic Dihetarylethene Derivatives.
Authors: Bochkov Andei Y. , Krayushkin Mikhail M. , Yarovenko Vladimir N. , Barachevsky Valery A. , Beletskaya Irina P. , Traven Valery F. 
Published: December 2013

AbstractUnsymmetrical dithienylmaleic acid anhydride (III), incorporating a coumarin moiety, is synthesized in order to combine high photochromic performance and intense fluorescence of open form.
ChemInform Abstract: Diels—Alder Reactions with Ethyl 1‐Benzofuran‐3‐carboxylates.
Authors: Kil'met'ev A. S. , Shul'ts E. E. , Shakirov M. M. , Rybalova T. V. , Tolstikov G. A. 
Published: December 2013

AbstractSubstituted salicylaldehydes (I) react with ethyl diazoacetate (II) to give benzofuran derivatives of type (III).
ChemInform Abstract: Design of a Highly Selective and Potent Class of Non‐planar Estrogen Receptor β Agonists.
Authors: Sunden Henrik , Ma Jian‐Nong , Hansen Lars K. , Gustavsson Anna‐Lena , Burstein Ethan S. , Olsson Roger 
Published: December 2013

AbstractThis describes the syntheses of various dibenzofurans and cycloheptanobenzofurans as estrogen receptor β agonists.
ChemInform Abstract: Indirect N‐Vinylation of Indoles via Isomerization of N‐Allyl Derivatives: Synthesis of (.+‐.)‐Debromoarborescidine B.
Authors: Tasic Gordana , Simic Milena , Popovic Stanimir , Husinec Suren , Maslak Veselin , Savic Vladimir 
Published: December 2013

AbstractThe double bond migration in N‐allylindoles is investigated as a method to access the corresponding N‐vinyl derivatives.
ChemInform Abstract: Microwave‐Assisted Synthesis and Antibacterial Activity of Unsymmetrical Indolyl/Aryl Bis‐thiosemicarbazones.
Authors: Li Lin , Jiang Yujia , Liu Xingli , Zhao Zhigang 
Published: December 2013

AbstractSome of the novel title bisthiosemicarbazones (III) (9 examples) exhibit good to excellent antibacterial activities.
ChemInform Abstract: Investigation of Reactions Between Binucleophilic Reagents with 2‐(2‐Oxindolin‐3‐ylidene)malononitrile Derivatives.
Authors: Seifi Mohammad , Sheibani Hassan 
Published: December 2013

AbstractThe reactions of hydrazines and 4‐substituted thiosemicarbazoles with 2‐(2‐oxoindolin‐3‐ylidene) malonitriles (I) are described.
ChemInform Abstract: An Isocyanide‐Based Multicomponent Reaction: New Route for Synthesis of Isoxazolinedione Derivatives.
Authors: Habibi Azizollah , Vafadarnejad Fahimeh , Armand Marjan Akbari 
Published: December 2013

AbstractThe three‐component, one‐pot‐reaction between alkylidene Meldrums acid (I), isocyanide (II), aliphatic ketoxime (III), and one molecule of water (moisture) provides a simple entry into the synthesis of new derivatives of isoxazolinedione.
ChemInform Abstract: One‐Pot Synthesis of Enantiopure 3,4‐Dihydroisocoumarins Through Dynamic Reductive Kinetic Resolution Processes.
Authors: Mangas‐Sanchez Juan , Busto Eduardo , Gotor Vicente , Gotor‐Fernandez Vicente 
Published: December 2013

AbstractThis preparation of enantiopure isocoumarin derivatives is based on combination of an enzymatic kinetic resolution with a base‐catalyzed racemization which provides an efficient system for dynamic reductive kinetic resolution.
ChemInform Abstract: Synthesis of Some New 3‐Coumaranone and Coumarin Derivatives as Dual Inhibitors of Acetyl‐ and Butyrylcholinesterase.
Authors: Alipour Masoumeh , Khoobi Mehdi , Nadri Hamid , Sakhteman Amirhossein , Moradi Alireza , Ghandi Mehdi , Foroumadi Alireza , Shafiee Abbas 
Published: December 2013

AbstractThe title compounds (III), (VI) exhibit inhibitory activity against both AChE and BuChE in the micromolar range.
ChemInform Abstract: A Novel Route to Isoquinoline[2,1‐g][1,6]naphthyridine, Pyrazolo[5,1‐a]isoquinoline and Pyridazino[4′,5′:3,4]pyrazolo[5,1‐a]isoquinoline Derivatives with Evaluation of Antitumor Activities.
Authors: Hassaneen Hamdi M. , Wardkhan Wagnat W. , Mohammed Yasmin Sh. 
Published: December 2013

AbstractRoutes towards the synthesis of the title compounds are described from isoquinoline derivatives.
ChemInform Abstract: From Simple Furans to Complex Nitrogen‐Bearing Aromatic Polycycles by Means of a Flexible and General Reaction Sequence Initiated by Singlet Oxygen.
Authors: Kalaitzakis Dimitris , Montagnon Tamsyn , Antonatou Eirini , Bardaji Nuria , Vassilikogiannakis Georgios 
Published: December 2013

AbstractA general one‐pot reaction sequence is developed to convert simple furan derivatives into nitrogen‐bearing polycyclic heterocycles.
ChemInform Abstract: Asymmetric Ion Pair Catalysis of 6π Electrocyclizations: Broensted Acid Catalyzed Enantioselective Synthesis of Optically Active 1,4‐Dihydropyridazines.
Authors: Das Arindam , Volla Chandra M. R. , Atodiresei Iuliana , Bettray Wolfgang , Rueping Magnus 
Published: December 2013

AbstractIt provides a simple, new, and highly enantioselective method to prepare a number of biologically important dihydropyridazines.
ChemInform Abstract: Synthesis and Biological Evaluation of a Novel Series of 6,8‐Dibromo‐4(3H)quinazolinone Derivatives as Anticancer Agents.
Authors: Ahmed Marwa F. , Youns Mahmoud 
Published: December 2013

AbstractThree novel series of azolylphenyl‐ and pyrimidinylphenyl‐substituted quinazolinone derivatives are synthesized and evaluated for their antitumor activity against the human breast carcinoma cell line MCF‐7.
ChemInform Abstract: Solvent Free Synthesis, Characterization, Anticancer, Antibacterial, Antifungal, Antioxidant and SAR Studies of Novel (E)‐3‐Aryl‐1‐(3‐alkyl‐2‐pyrazinyl)‐2‐propenone.
Authors: Kitawat Bheru Singh , Singh Man , Kale Raosaheb Kathalupant 
Published: December 2013

AbstractThe microwave‐assisted Claisen—Schmidt condensation of acetylpyrazines (I) with aryl aldehydes (II) leads to (E)‐adducts (III) which display significant antioxidant activity.
ChemInform Abstract: Substituted [1,2,4,5]‐Dithiadiazines and [1,3,4]‐Thiadiazolidines; Synthesis, Characterization and Antimicrobial Study.
Authors: Deohate Pradip P. 
Published: December 2013

AbstractThe antimicrobial screening shows that compounds (Vb), (Vd), (VIIb), (VIId) are highly efficient against E.
ChemInform Abstract: Synthesis of Some New 1,2,3,4‐Tetrahydropyrimidine‐2‐thione and Their Thiazolo[3,2‐a]pyrimidine, Thiazino and Benzothiazepine Derivatives.
Authors: Fadda A. A. , Bondock S. B. , Khalil A. M. , Tawfik Eman H. 
Published: December 2013

AbstractA novel and versatile approach leads to fused thiazolopyrimidine derivatives to which the third ring is attached bridging the N‐3 and S‐2 position.
ChemInform Abstract: Synthesis and Biological Evaluation of Novel Benzoxaboroles as Potential Antimicrobial and Anticancer Agents.
Authors: Kumar J. Sravan , Alam M. A. , Gurrapu Shirisha , Nelson Grady , Williams Michael , Corsello Michael A. , Johnson Joseph L. , Jonnalagadda Subash C. , Mereddy Venkatram R. 
Published: December 2013

AbstractBenzoxaborole derivatives are prepared from formylphenylboronic acid derivatives (I) utilizing Baylis‐Hillman reaction [cf.
ChemInform Abstract: New Triterpenoid Saponins, Cowpeasaponins I and II, from Cowpea Seeds (Vigna sinensis K.).
Authors: Cui En Ji , Cho Jin Gyeong , Chung In Sik , Kim Ji Young , Hong Seong Gil , Baek Nam In 
Published: December 2013

AbstractThe isolation and structural assignment of two new compounds, cowpeasaponin I (Ia) and II (Ib), derived along with other known metabolites from cowpea seeds is described.
ChemInform Abstract: A New Reversible Mg3Ag—H2 System for Hydrogen Storage.
Authors: Si T. Z. , Zhang J. B. , Liu D. M. , Zhang Q. A. 
Published: December 2013

AbstractMg3Ag is prepared as a hydrogen storage medium by reactive sintering of compressed pellets of MgH2 and Ag powders in a molar ratio of 3:1 at 400 °C for 2 h under Ar atmosphere.
ChemInform Abstract: Chemical Studies on Taxus canadensis
Authors: Li Yong , Qin Fang , Wang Si‐Ming , Guo Rui‐Xia , Zhang Yue‐Feng , Gu Yu‐Cheng , Shi Qing‐Wen 
Published: December 2013

AbstractReview: phytochemical studies and chemical modifications of taxanes; 69 refs.