bluuebunny/crossref_metadata_2025_split huggingface dataset:
Biphasic, but monolithic scaffolds for the therapy of osteochondral defects
Authors: Gelinsky Michael , Eckert Marlen , Despang Florian 
Published: August 2007

AbstractFor the regenerative therapy of osteochondral defects – deep lesions of the articular cartilage in which the underlying bone tissue is already affected too – special implant materials and scaffolds are needed. In this study, two new approaches will be presented, leading to biphasic, but monolithic scaffold materials. Both consist of a mineralised layer for filling of the bony part of the defect and a non-mineralised one for the chondral part. Due to the preparation methods, both layers are fused together to give a unified whole without need of any artificial joining. The resulting materials, either based on collagen, hyaluronic acid and hydroxyapatite or calcium alginate gels and hydroxyapatite, seem to be suitable scaffolds for cultivating chondrocytes and osteoblasts – and therefore can act as matrices for tissue engineering of osteochondral grafts.
A finite frequency approach to filter design for uncertain discrete‐time systems
Authors: Wang Heng , Yang Guang‐Hong 
Published: August 2007

AbstractThis paper studies the problem of finite frequency filter design for linear time‐invariant discrete‐time systems with polytopic uncertainties. Generalized Kalman–Yakubovich–Popov lemma is exploited to formulate the filter design problem in finite frequency domain. A design method is presented in terms of solutions to a set of linear matrix inequalities. A numerical example is given to illustrate the effectiveness of the proposed method. Copyright © 2007 John Wiley & Sons, Ltd.
Selective solid–liquid extraction of cations using solid‐phase polyamides with crown ether moieties as cation host units
Authors: Calderón Verónica , Serna Felipe , García Félix , de la Peña José L. , García José M. 
Published: August 2007

AbstractThis work describes the interaction of alkaline, alkaline earth, transition metal, heavy metal, and lanthanide cations from nitrate solutions with synthetic polyamides. The polyamides have pendant structures acting as cation host moieties. The host subgroups are benzo‐12‐crown‐4, benzo‐15‐crown‐5, benzo‐18‐crown‐6, and the three dipodal counterparts of the three benzo‐crown units. This interaction has been analyzed in terms of competitive polyamide solid‐phase extraction of nitrate cations from aqueous or acetronitrile solutions. The solid‐phase extraction of water or acetonitrile solutions of alkaline, alkaline earth, transition metal, heavy metal, and lanthanide ions using solid‐phase polyamides is performed with a degree of selectivity. Higher selectivity is observable in the extraction of Pb(II) from a set of heavy metal ions in water and acetonitrile solutions, and the extraction of Cr(III) from a set of transition metals in acetonitrile solutions. It is a noteworthy result, which along with the reusability of the solid‐phase polyamides points to potentially successful applications in the field of environmental chemistry: the decontamination and elimination of poisoning cations, the separation and modification of cation mixtures, and the development of fixed‐site carrier membranes for selective transport or manufacture of cation‐sensitive sensors. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2007
Mechanical properties of epoxy resin modified with polycarbonate and reactive polybutadiene
Authors: Bakar M. , Kobusińska J. , Szczerba J. 
Published: August 2007

AbstractEpoxy resin Epidian 5 cured with triethylene tetramine was modified with hydroxyl‐terminated polybutadiene (PB) and polycarbonate (PC). Compositions with different amount of modifiers were obtained and tested for their impact strength, flexural strength, as well as resistance to crack propagation. The latter was assessed by evaluating the critical stress intensity factor under three‐point bending mode using single‐edge notched specimens. Scanning electron microscopy was used to analyze the fractured sample surfaces. The obtained results revealed that the mechanical properties of epoxy resin were improved due to the formation of heterogeneous phase with rubber particles, which arrest the propagation of cracks. Moreover, synergism effect was observed with the hybrid composition containing 10% PC and 2.5% of reactive PB. The impact strength was higher by ∼ 15% than the sum of impact strength of compositions containing only one modifier. Another hybrid composition with 2.5% PB and 2.5% PC also exhibited synergism effect with the flexural strain at break, the energy at break under flexure, as well as the brittle fracture energy estimated from the critical stress intensity factor measurements. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2007
Origin of Diastereoselectivity in the Organolanthanide‐Mediated Intramolecular Hydroamination/Cyclisation of Aminodienes: A Computational Exploration of Constrained Geometry CGC–Ln Catalysts
Authors: Tobisch Sven 
Published: August 2007

AbstractThe regulation of ring‐substituent diastereoselectivity in the intramolecular hydroamination/cyclisation (IHC) of α‐substituted aminodienes by constrained geometry CGC–lanthanide catalysts (CGC=[Me2Si(η5‐Me4C5)(tBuN)]2−) has been elucidated by means of a reliable DFT method. The first survey of relevant elementary steps for the 1‐methyl‐(4E,6)‐heptadienylamine substrate (1) and the [{Me2Si(η5‐Me4C5)(tBuN)}Sm{N(TMS)2}] starting material (2) identified the following general mechanistic aspects of Ln‐catalysed aminodiene IHC. The substrate‐adduct 3‐S of the active CGC–Ln–amidodiene compound represents the catalyst's resting state, but the substrate‐free form 3′ with a chelating amidodiene functionality is the direct precursor for cyclisation. This step proceeds with almost complete regioselectivity through exocyclic ring closure by means of a frontal trajectory, giving rise to the CGC–Ln–azacycle intermediate 4. Subsequent protonolysis of 4 is turnover limiting, whilst the ring‐substituent diastereoselectivity is dictated by exocyclic ring closure. Unfavourable close interatomic contacts between the substrate's α‐substituent and the catalyst backbone have been shown to largely govern the trans/cis selectivity. Substituents of sufficient bulk in the α‐position of the substrate have been identified as being vital for stereochemical induction. The present study has indicated that the diastereoselectivity of ring closure can be considerably modulated. The variation of the lanthanide's ionic radius and introduction of extra steric pressure at the substrate's α‐position and/or the CGC N centre have been identified as effective handles for tuning the selectivity. The quantification of these factors reported herein represents the first step toward the rational design of improved CGC–Ln catalyst architectures and will thus aid this process.
Molecular Heterogeneous Catalysis: A Single‐Site Zeolite‐Supported Rhodium Complex for Acetylene Cyclotrimerization
Authors: Kletnieks Philip W. , Liang Ann J. , Craciun Raluca , Ehresmann Justin O. , Marcus David M. , Bhirud Vinesh A. , Klaric Meghan M. , Hayman Miranda J. , Guenther Darryl R. , Bagatchenko Olesya P. , Dixon David A. , Gates Bruce C. , Haw James F. 
Published: August 2007

AbstractBy anchoring metal complexes to supports, researchers have attempted to combine the high activity and selectivity of molecular homogeneous catalysis with the ease of separation and lack of corrosion of heterogeneous catalysis. However, the intrinsic nonuniformity of supports has limited attempts to make supported catalysts truly uniform. We report the synthesis and performance of such a catalyst, made from [Rh(C2H4)2(CH3COCHCOCH3)] and a crystalline support, dealuminated Y zeolite, giving {Rh(C2H4)2} groups anchored by bonds to two zeolite oxygen ions, with the structure determined by extended X‐ray absorption fine structure (EXAFS) spectroscopy and the uniformity of the supported complex demonstrated by 13C NMR spectroscopy. When the ethylene ligands are replaced by acetylene, catalytic cyclotrimerization to benzene ensues. Characterizing the working catalyst, we observed evidence of intermediates in the catalytic cycle by NMR spectroscopy. Calculations at the level of density functional theory confirmed the structure of the as‐synthesized supported metal complex determined by EXAFS spectroscopy. With this structure as an anchor, we used the computational results to elucidate the catalytic cycle (including transition states), finding results in agreement with the NMR spectra.
The Network Structure [SbHg2]GaCl4: An X‐Ray Study of a Temperature Driven Phase Transition.
Authors: Schlirf J. , Deiseroth H. J. 
Published: August 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
A Study of the Isothermal Section of the Cu—Ag—Zr Ternary System at 1023 K by Diffusion Triple Technique.
Authors: He X. C. , Wang Y. M. , Liu H. S. , Jin Z. P. 
Published: August 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Solid‐State Synthesis of Monazite‐Type Compounds LnPO4 (Ln: La to Gd).
Authors: Damien Bregiroux , Fabienne Audubert , Thibault Charpentier , Dimitri Sakellariou , Didier Bernache‐Assolant 
Published: August 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Effect of Al on the Synthesis of Ti3SiC2 by Reactively Sintering Ti—SiC—C Powder Mixtures.
Authors: Sun ZhengMing , Yang Songlan , Hashimoto Hitoshi 
Published: August 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Transition‐Metal (MnII and CoII) Complexes with the Heteropolymolybdate Fragment [AsVMo9O33]7‐: Crystal Structures, Electrochemical and Magnetic Properties.
Authors: Yang Yanyan , Xu Lin , Gao Guanggang , Li Fengyan , Qiu Yunfeng , Qu Xiaoshu , Liu Hong 
Published: August 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Effect of Conformational Control of Chiral Oxazaborolidine by π—π Stacking Interaction of a Pentafluorophenyl Group Toward Asymmetric Borane Reduction.
Authors: Korenaga Toshinobu , Kadowaki Koichi , Sakai Takashi 
Published: August 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
A Structurally Simple L‐Proline Derivative Promotes the Asymmetric Allylation of Aldehydes with Tribromoallyltin.
Authors: Liu Ling‐yan , Sun Jing , Liu Nan , Chang Wei‐xing , Li Jing 
Published: August 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Asymmetric Diethylzinc Addition and Phenyl Transfer to Aldehydes Using Chiral cis‐Cyclopropane‐Based Amino Alcohols.
Authors: Zhong Jiangchun , Guo Hongchao , Wang Mingan , Yin Mingming , Wang Min 
Published: August 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Metallic Dysprosium Induced Silyl Radical Reactions: Intermolecular Cyclization and Reduction of Alkynes and Imines.
Authors: Zhu Zhenyu , Wang Jialiang , Zhang Zhengxing , Xiang Xu , Zhou Xigeng 
Published: August 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Indium‐Catalyzed 2‐Alkenylation of 1,3‐Dicarbonyl Compounds with Unactivated Alkynes.
Authors: Endo Kohei , Hatakeyama Takuji , Nakamura Masaharu , Nakamura Eiichi 
Published: August 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Palladium‐Catalyzed Methylation and Arylation of sp2 and sp3 C—H Bonds in Simple Carboxylic Acids.
Authors: Giri Ramesh , Maugel Nathan , Li Jiao‐Jie , Wang Dong‐Hui , Breazzano Steven P. , Saunders Lindsey B. , Yu Jin‐Quan 
Published: August 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Highly Efficient Ruthenium Catalysts for the Formation of Tetrasubstituted Olefins via Ring‐Closing Metathesis.
Authors: Stewart Ian C. , Ung Thay , Pletnev Alexandre A. , Berlin Jacob M. , Grubbs Robert H. , Schrodi Yann 
Published: August 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Reaction of Organotin Phenoxides with Ethyl Propiolate Catalyzed by Triethylamine and Tin(IV) Chloride.
Authors: Kinart Wojciech J. , Kinart Andrzej 
Published: August 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Palladium‐Catalyzed Conjugate Reduction of Enones into α,β‐Dideuterioketones with Hexamethyldisilane and Deuterium Oxide.
Authors: Otsuka Hidehito , Shirakawa Eiji , Hayashi Tamio 
Published: August 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Oligomeric Benzylsulfonium Salts: Facile Benzylation via High‐Load ROMP Reagents.
Authors: Zhang Mianji , Flynn Daniel L. , Hanson Paul R. 
Published: August 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Tetradiazo(o‐carboxy)phenylcalix[4]arene for Determination of Pb2+ Ion.
Authors: Tan Le Van , Quang Duong Tuan , Lee Min Hee , Kim Tae Hyun , Kim Hasuck , Kim Jong Seung 
Published: August 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Copper‐Catalyzed Enantioselective Intramolecular Conjugate Addition/Trapping Reactions: Synthesis of Cyclic Compounds with Multichiral Centers.
Authors: Li Kangying , Alexakis Alexandre 
Published: August 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Dppc+PF‐6‐PdCl2‐[bmim] [PF6] — A Copper‐Free Recyclable Catalytic System for Sonogashira Coupling Reaction.
Authors: Guan Jintao , Yu Guang‐Ao , Hou Jian‐Guo , Yu Na , Ren Yong , Liu Sheng Hua 
Published: August 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Pd‐Catalyzed Allylic Alkylation of Secondary Nitroalkanes.
Authors: Maki Keisuke , Kanai Motomu , Shibasaki Masakatsu 
Published: August 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Readily Accessible, Modular, and Tuneable BINOL 3,3′‐Perfluoroalkylsulfones: Highly Efficient Catalysts for Enantioselective In‐Mediated Imine Allylation.
Authors: Kargbo Robert , Takahashi Yoko , Bhor Santosh , Cook Gregory R. , Lloyd‐Jones Guy C. , Shepperson Ian R. 
Published: August 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Aminomethylations via Cross‐Coupling of Potassium Organotrifluoroborates with Aryl Bromides.
Authors: Molander Gary A. , Sandrock Deidre L. 
Published: August 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Organocatalysis in Radical Chemistry. Enantioselective α‐Oxyamination of Aldehydes.
Authors: Sibi Mukund P. , Hasegawa Masayuki 
Published: August 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
First General, Direct, and Regioselective Synthesis of Substituted Methoxybenzoic Acids by ortho‐Metalation.
Authors: Nguyen Thi‐Huu , Chau Nguyet Trang Thanh , Castanet Anne‐Sophie , Nguyen Kim Phi Phung , Mortier Jacques 
Published: August 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Rh(II)‐Catalyzed Formation and Rearrangement of Trifluoroacetyl‐Containing Sulfur Ylides.
Authors: Pang Wan , Zhu Shifa , Jiang Huanfeng , Zhu Shizheng 
Published: August 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Chiral Proton Catalysis: Enantioselective Broensted Acid Catalyzed Additions of Nitroacetic Acid Derivatives as Glycine Equivalents.
Authors: Singh Anand , Yoder Ryan A. , Shen Bo , Johnston Jeffrey N. 
Published: August 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Mild and General Methods for the Palladium‐Catalyzed Cyanation of Aryl and Heteroaryl Chlorides.
Authors: Littke Adam , Soumeillant Maxime , Kaltenbach Robert F. III , Cherney Robert J. , Tarby Christine M. , Kiau Susanne 
Published: August 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
A Convenient Procedure for the Esterification of Benzoic Acids with Phenols: A New Application for the Mitsunobu Reaction.
Authors: Fitzjarrald Victor P. , Pongdee Rongson 
Published: August 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Catalytic Asymmetric Conjugate Reduction of β,β‐Disubstituted α,β‐Unsaturated Sulfones.
Authors: Llamas Tomas , Gomez Arrayas Ramon , Carretero Juan C. 
Published: August 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Evaluation of Disaccharide‐Based Ligands for Pd(0)‐Catalyzed Asymmetric Allylations.
Authors: Johannesen Sine A. , Glegola Katarzyna , Sinou Denis , Framery Eric , Skrydstrup Troels 
Published: August 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
1,1′‐Binaphthyl Ligands with Bulky 3,3′‐Tertiaryalkyl Substituents for the Asymmetric Alkyne Addition to Aromatic Aldehydes.
Authors: Wang Qin , Chen Shan‐Yong , Yu Xiao‐Qi , Pu Lin 
Published: August 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Novel Spiroheterocycles by Aziridination of α‐Methylene‐γ‐ and ‐δ‐lactams.
Authors: Loreto M. Antonietta , Migliorini Antonella , Tardella P. Antonio , Gambacorta Augusto 
Published: August 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Asymmetric Synthesis of Aziridines by Reduction of N‐tert‐Butanesulfinyl α‐Chloro Imines.
Authors: Denolf Bram , Leemans Erika , De Kimpe Norbert 
Published: August 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Enantioselective Organocatalytic Double Michael Addition Reactions.
Authors: Li Hao , Zu Liansuo , Xie Hexin , Wang Jian , Jiang Wei , Wang Wei 
Published: August 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Novel Thiol‐Based TACE Inhibitors: Rational Design, Synthesis, and SAR of Thiol‐Containing Aryl Sulfonamides.
Authors: Rao B. Govinda , Bandarage Upul K. , Wang Tiansheng , Come Jon H. , Perola Emanuele , Wei Yunyi , Tian Shi‐Kai , Saunders Jeffrey O. 
Published: August 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Palladium‐Catalyzed Three‐Component Synthesis of 3‐(Diarylmethylene)oxindoles Through a Domino Sonogashira/Carbopalladation/C—H Activation/C—C Bond‐Forming Sequence.
Authors: Pinto Artur , Neuville Luc , Zhu Jieping 
Published: August 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Indoline Derivatives II: Synthesis and Factor Xa (FXa) Inhibitory Activities.
Authors: Noguchi Tetsuji , Tanaka Naoki , Nishimata Toyoki , Goto Riki , Hayakawa Miho , Sugidachi Atsuhiro , Ogawa Taketoshi , Asai Fumitoshi , Ozeki Tomoko , Fujimoto Koichi 
Published: August 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
An Efficient, Facile, and General Synthesis of 1H‐Indazoles by 1,3‐Dipolar Cycloaddition of Arynes with Diazomethane Derivatives.
Authors: Jin Tienan , Yamamoto Yoshinori 
Published: August 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Enantioselective 1,3‐Dipolar Cycloadditions of Diazoacetates with Electron‐Deficient Olefins.
Authors: Sibi Mukund P. , Stanley Levi M. , Soeta Takahiro 
Published: August 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.