bluuebunny/crossref_metadata_2025 huggingface dataset:
Yield and Phosphorus Transformations in a Rice–Wheat System with Crop Residue and Phosphorus Management
Authors: Gupta R.K. , Yadvinder-Singh  , Ladha J.K. , Bijay-Singh  , Singh Jagmohan , Singh Gurpreet , Pathak H.
Published: August 2007

Phosphorous deficiency limits productivity of rice (Oryza sativa L.)–wheat (Triticum aestivum L.) systems in the Indo‐Gangetic Plains. Deterioration of soil and air quality due to straw burning is also a concern. Field experiments were conducted to determine the effects of straw and P management strategies on yield, P balance, and P transformations in soil in a rice–wheat system. Four treatments composed of different combinations of rice and wheat straw removal, burning, and incorporation were the main plots. Subplot treatments were P fertilization to wheat or to both rice and wheat and a no‐P control. Wheat yield was similar where straw was burned in situ or removed. Incorporation of straw increased the wheat yield in Year 4. Significant straw × P management interactions, observed after 4 yr, suggested that residues can enhance yield under limited P supply situations. Application of 26 kg P ha−1 to wheat increased grain yield by 6 to 15% compared with no P. Rice yield did not respond to incorporation of residues or P fertilization. The P balance was negative with removal or burning of rice straw, but when both wheat and rice straw were incorporated, the balance was positive at the recommended P level (26 kg P ha−1 to wheat only). Changes in total soil P suggested that the two crops remove significant P from below 15 cm. Incorporation of residues increased soil Olsen, inorganic, and organic P; reduced P sorption; and increased P release. Data show that continuous incorporation of residues substituted for 13 kg inorganic P ha−1 yr−1 and improved system yield.
Nitrogen and Water Availabilities and Competitiveness of Bluejoint: Spruce Growth and Foliar Carbon‐13 and Nitrogen‐15 Abundance
Authors: Matsushima Miwa , Chang Scott X.
Published: August 2007

How resource availabilities affect the competitiveness of Canada bluejoint grass [Calamagrostis canadensis (Michx.) P. Beauv., hereafter referred to as bluejoint] is poorly understood. Bluejoint is a widespread grass species in boreal forests and competes with tree species such as white spruce [Picea glauca (Moench) Voss] for belowground resources (e.g., soil N and water) when their supply is limited. In this greenhouse‐based study, we tested the following hypotheses: (i) bluejoint competition reduces white spruce growth when belowground resource availabilities are limited; (ii) greater N and water availabilities may increase bluejoint competition and its adverse effects on white spruce growth; and (iii) white spruce foliar δ13C and δ15N are affected by soil N and water availabilities and bluejoint competition. A 2 × 2 × 2 (competition × N availability × water availability) factorial experiment was conducted using pots of planted white spruce seedlings with or without bluejoint. Bluejoint competition reduced the volume index (diameter2 × height) of white spruce by 50%. The competitiveness of bluejoint appeared to be independent of resource availabilities, but bluejoint had greater growth response to increased N availability than white spruce. Bluejoint competition depleted white spruce foliar δ13C and δ15N by 1.2 and 1.2‰, respectively, even under adequate water supply, indicating that N deficiency caused by bluejoint competition had a dominant effect (increasing 13C discrimination during photosynthesis) compared with the potential effect of drought stress on foliar δ13C, and that strong NH4 uptake by bluejoint may have prevented significant soil N losses and 15N enrichment through nitrification and subsequent denitrification.
Biphasic, but monolithic scaffolds for the therapy of osteochondral defects
Authors: Gelinsky Michael , Eckert Marlen , Despang Florian
Published: August 2007

For 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

This 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

This 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

Epoxy 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

The 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

By 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

ChemInform 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

ChemInform 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

ChemInform 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

ChemInform 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

ChemInform 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

ChemInform 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

ChemInform 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

ChemInform 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

ChemInform 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

ChemInform 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

ChemInform 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

ChemInform 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

ChemInform 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

ChemInform 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

ChemInform 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

ChemInform 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

ChemInform 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

ChemInform 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

ChemInform 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

ChemInform 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

ChemInform 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

ChemInform 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

ChemInform 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

ChemInform 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

ChemInform 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

ChemInform 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

ChemInform 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

ChemInform 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

ChemInform 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

ChemInform 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

ChemInform 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

ChemInform 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

ChemInform 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

ChemInform 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

ChemInform 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

ChemInform 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

ChemInform 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

ChemInform 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.
One‐Pot Synthesis of Pyrazole‐5‐carboxylates by Cyclization of Hydrazone 1,4‐Dianions with Diethyl Oxalate.
Authors: Dang Tuan Thanh , Dang Tung Thanh , Langer Peter
Published: August 2007

ChemInform 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.
Synthesis of Symmetrically and Unsymmetrically Substituted N,N′‐Diarylimidazolin‐2‐ones by Copper‐Catalyzed Arylamidation under Microwave‐Assisted and Conventional Conditions.
Authors: Hafner Thomas , Kunz Doris
Published: August 2007

ChemInform 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.
5‐Arylidene Derivatives of Meldrum′s Acid as Synthons in Pyrano[4,3‐b]pyran Synthesis.
Authors: Palasz Aleksandra , Jelska Katarzyna , Ozog Monika , Serda Pawel
Published: August 2007

ChemInform 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 Facile Synthetic Route to 2H‐Chromenes: Reconsideration of the Mechanism of the DBU‐Catalyzed Reaction Between Salicylic Aldehydes and Ethyl 2‐Methylbuta‐2,3‐dienoate.
Authors: Dai Lun‐Zhi , Shi Yong‐Ling , Zhao Gui‐Ling , Shi Min
Published: August 2007

ChemInform 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 Enantioselective Synthesis of Flavanones and Chromanones.
Authors: Biddle Margaret M. , Lin Michael , Scheidt Karl A.
Published: August 2007

ChemInform 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.
Radical 6‐endo‐trig Cyclization of β,β‐Difluoro‐o‐isocyanostyrenes: A Facile Synthesis of 3‐Fluoroquinolines and Their Application to the Synthesis of 11‐Alkylated Cryptolepines.
Authors: Mori Takashi , Ichikawa Junji
Published: August 2007

ChemInform 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.
Synthesis of Substituted 1,2‐Dihydroisoquinolines Through the Reaction of Isoquinoline and Dimethyl Acetylenedicarboxylate in the Presence of Amides.
Authors: Yavari Issa , Ghazanfarpour‐Darjani Majid , Sabbaghan Maryam , Hossaini Zinatossadat
Published: August 2007

ChemInform 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 New Approach to the 1,10‐Phenanthroline Core.
Authors: Chelucci Giorgio , Addis Daniele , Baldino Salvatore
Published: August 2007

ChemInform 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.
Ruthenium‐Catalyzed Cycloisomerization—6π‐Cyclization: A Novel Route to Pyridines.
Authors: Trost Barry M. , Gutierrez Alicia C.
Published: August 2007

ChemInform 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.
Domino Metathesis of 3,6‐Dihydro‐1,2‐oxazine: Access to Isoxazolo[2,3‐a]pyridin‐7‐ones.
Authors: Calvet Geraldine , Blanchard Nicolas , Kouklovsky Cyrille
Published: August 2007

ChemInform 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.
Organic Synthesis in Water: 1,3‐Dipolar Cycloaddition Reactions at Ambient Temperature with Aqueous Suspensions of Solid Reactants.
Authors: Butler Richard N. , Coyne Anthony G. , Moloney Eamon M.
Published: August 2007

ChemInform 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.
Synthesis of Condensed and Uncondensed Tetrazolo[1,5‐b][1,2,4]triazines as Potential Antimicrobial Agents.
Authors: Taha Mamdouh A. M.
Published: August 2007

ChemInform 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.
Bicyclic β‐Hydroxytetrahydrofurans as Precursors of Medium Ring Keto‐Lactones.
Authors: Ferraz Helena M. C. , Longo Luiz S. Jr.
Published: August 2007

ChemInform 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 Diastereoselective Electrophilic Fluorination of Cyclic syn‐β‐Hydroxysilanes.
Authors: Purser Sophie , Wilson Christopher , Moore Peter R. , Gouverneur Veronique
Published: August 2007

ChemInform 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.
Stereoselective Hetero Diels—Alder Reaction of Selenoaldehydes with Pentavalent Phosphole Chalcogenides.
Authors: Segi Masahito , Kawaai Katsuhiko , Honda Mitsunori , Fujinami Shuhei
Published: August 2007

ChemInform 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.
Hyperconjugate Effect of C—Ge Bonds: Synthesis of Multisubstituted Alkenylgermanes via Torquoselective Olefination of Acylgermanes with Ynolates.
Authors: Shindo Mitsuru , Matsumoto Kenji , Shishido Kozo
Published: August 2007

ChemInform 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.
Total Synthesis of Plusbacin A3: Depsipeptide Antibiotic Active Against Vancomycin‐Resistant Bacteria.
Authors: Wohlrab Aaron , Lamer Ryan , VanNieuwenhze Michael S.
Published: August 2007

ChemInform 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.
Total Synthesis of Tubulysins U and V.
Authors: Sani Monica , Fossati Giacomo , Huguenot Florent , Zanda Matteo
Published: August 2007

ChemInform 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.
Thalassospiramides A (I) and B (II), Immunosuppressive Peptides from the Marine Bacterium Thalassospira sp.
Authors: Oh Dong‐Chan , Strangman Wendy K. , Kauffman Christopher A. , Jensen Paul R. , Fenical William
Published: August 2007

ChemInform 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 1,3,6‐Trisubstituted 2,4‐Dioxohexahydropyrimidines: A Convenient Stereoselective Synthesis from Aspartic Acid Derivatives.
Authors: Patino‐Molina Rosario , Cubero‐Lajo Ivan , Perez de Vega M. Jesus , Garcia‐Lopez M. Teresa , Gonzalez‐Muniz Rosario
Published: August 2007

ChemInform 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.
Synthesis of β‐C‐galacto‐Pyranosides with Fluorine on the Pseudoanomeric Substituent.
Authors: Tony Kurissery A. , Denton Richard W. , Dilhas Anna , Jimenez‐Barbero Jesus , Mootoo David R.
Published: August 2007

ChemInform 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.
Total Syntheses of (+)‐Lyconadin A and (‐)‐Lyconadin B.
Authors: Beshore Douglas C. , Smith Amos B. III
Published: August 2007

ChemInform 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.
Concise Total Synthesis of (‐)‐Calycanthine (I), (+)‐Chimonanthine (IIa), and (+)‐Folicanthine (IIb).
Authors: Movassaghi Mohammad , Schmidt Michael A.
Published: August 2007

ChemInform 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.
New Emivirine (MKC‐442) Analogues Containing a Tetrahydronaphthalene at C‐6 and Their anti‐HIV Activity.
Authors: Therkelsen Frans , Joergensen Per T. , Nielsen Claus , Pedersen Erik B.
Published: August 2007

ChemInform 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 Total Synthesis of (‐)‐Pironetin Employing the SAMP/RAMP Hydrazone Methodology.
Authors: Enders Dieter , Shulut Sylvie , Steinbusch Daniel , Herrbach Audrey
Published: August 2007

ChemInform 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.
Total Synthesis of Lysobactin.
Authors: Guzman‐Martinez Aikomari , Lamer Ryan , VanNieuwenhze Michael S.
Published: August 2007

ChemInform 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.
Structures of New Cytotoxic Antibiotics, Piericidins C7 and C8.
Authors: Hayakawa Yoichi , Shirasaki Shingo , Kawasaki Takashi , Matsuo Yoshihide , Adachi Kyoko , Shizuri Yoshikazu
Published: August 2007

ChemInform 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.
Facile Synthesis of γ‐Alkylidenebutenolides.
Authors: Xu Hai‐Wei , Wang Jun‐Feng , Liu Gai‐Zhi , Hong Guang‐Feng , Liu Hong‐Min
Published: August 2007

ChemInform 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 Total Synthesis of Macrolide Antitumor Agent (‐)‐Lasonolide A (I).
Authors: Ghosh Arun K. , Gong Gangli
Published: August 2007

ChemInform 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.
Total Synthesis of Jerangolid D.
Authors: Pospisil Jiri , Marko Istvan E.
Published: August 2007

ChemInform 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.
Synthesis and Stereochemical Assignment of Brasilibactin A.
Authors: Mitchell Judith M. , Shaw Jared T.
Published: August 2007

ChemInform 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.
External Magnetic Field‐Induced Mesoscopic Organization of Fe3O4 Pyramids and Carbon Sheets.
Authors: Pol S. V. , Pol V. G. , Gedanken A. , Felner I. , Sung M.‐G. , Asai S.
Published: August 2007

ChemInform 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.
Magnetic Random Access Memory (MRAM)
Authors: Zheng Yuankai , Wu Yihong , Li Kebin , Qiu Jinjun , Han Guchang , Guo Zaibing , Luo Ping , An Lihua , Liu Zhiyong , Wang Li , et al. et al.
Published: August 2007

ChemInform 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.
Advanced Modeling Techniques for Micromagnetic Systems
Authors: Jalil M. B. A. , Tan S. G. , Cheng X. Z.
Published: August 2007

ChemInform 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 Chemistry and Non‐Linear Properties of Tetragonal Tungsten Bronzes Materials
Authors: Simon Annie , Ravez Jean
Published: August 2007

ChemInform 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 Critical Review of Electronic Effects in Enediamido and α‐Diimino Complexes of the Group 4 Metals
Authors: Mealli Carlo , Ienco Andrea , Phillips Andrew D. , Galindo Agustin
Published: August 2007

ChemInform 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.
Organometallic Chemistry of Polypyridine Ligands I
Authors: Sadimenko Alexander P.
Published: August 2007

ChemInform 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.
The Synthesis of Chromenes, Chromans, Coumarins and Related Heterocycles via Tandem Reactions of Salicylic Aldehydes or Salicylic Imines with α,β‐Unsaturated Compounds
Authors: Shi Yong‐Ling , Shi Min
Published: August 2007

ChemInform 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.
Cyclic Porphyrin Arrays as Artificial Photosynthetic Antenna: Synthesis and Excitation Energy Transfer
Authors: Nakamura Yasuyuki , Aratani Naoki , Osuka Atsuhiro
Published: August 2007

ChemInform 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.
Design of Fluorescent Materials for Chemical Sensing
Authors: Basabe‐Desmonts Lourdes , Reinhoudt David N. , Crego‐Calama Mercedes
Published: August 2007

ChemInform 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.
Click Chemistry — What′s in a Name? Triazole Synthesis and Beyond
Authors: Gil Maria Victoria , Arevalo Maria Jose , Lopez Oscar
Published: August 2007

ChemInform 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.
Biosynthesis of Nitro Compounds
Authors: Winkler Robert , Hertweck Christian
Published: August 2007

ChemInform 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.
Controlling Competing Pathways in Palladium‐Catalyzed Tandem/Domino Reactions of Hindered Grignard Reagents with 1,2‐Dihaloarenes and 2‐Haloaryl Tosylates
Authors: Hu Qiao‐Sheng
Published: August 2007

ChemInform 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.
Electrochemistry Applied to Organic Synthesis: Principles and Main Achievements
Authors: Simonet Jacques
Published: August 2007

ChemInform 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.
Alkyl‐Substituted Benzo‐1,4‐quinones
Authors: Balci M. , Gultekin M. S. , Celik M.
Published: August 2007

ChemInform 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.
Metals in Membranes
Authors: Liang Xiangyang , Campopiano Dominic J. , Sadler Peter J.
Published: August 2007

ChemInform 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.
Passive Targeting of Solid Tumors: Pathophysiological Principles and Physicochemical Aspects of Delivery Systems
Authors: Moghimi S. M.
Published: August 2007

ChemInform 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.
Neurochemistry — Neuropharmacology of Fear and Fear Conditioning
Authors: Schafe G. E. , LeDoux J. E.
Published: August 2007

ChemInform 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.
Circular dichroism of diglycosyl dichalcogenides in solution and solid state
Authors: Kurtán Tibor , Pescitelli Gennaro , Salvadori Piero , Kenéz Ágnes , Antus Sándor , Szilágyi László , Illyés Tünde‐zita , Szabó Ildikó
Published: August 2007

Solution and solid‐state CD spectra of nine peracetylated and deacetalyted diglycosyl disulfides were measured to study the relationship between the low‐energy CD transitions (n1→σ*SS and n2→σ*SS) and helicity of the inherently chiral disulfide chromophore as perturbed by chiral carbohydrate moieties. The solid‐state CD spectra were directly correlated with the reported X‐ray structures of Ac4GlcSSGlcAc4 and Ac4GlcSSGalAc4, and the CD data revealed that all the disulfides have M helicity with C1SSC1′ dihedral angles −90° < φ < 0° both in solution and in the solid state. A TDDFT CD study was carried out on dimethyl diselenide which confirmed that the same quadrant rule is relevant between the signs of the low‐energy CD transitions and the diselenide torsional angle as formulated previously for the disulfide chromophore. The CD spectra of Ac4GlcSeSeGlcAc4 measured in solution and in the solid state were correlated with its X‐ray structure and reproduced well by TDDFT CD calculations performed on its tetra‐O‐acetyl derivative. Chirality, 2008. © 2007 Wiley‐Liss, Inc.
Spectroscopic properties of the nonplanar amide group: A computational study
Authors: Bednárová Lucie , Maloň Petr , Bouř Petr
Published: August 2007

Experimental studies suggest that amide bond may significantly deviate from planar arrangement even in linear peptides and proteins. In order to find out the extent to which such deviation may influence principal amide spectroscopic properties, we conducted a computational study of nonplanar N‐methylacetamide (NMA) conformers. Vibrational absorption, Raman, and electronic spectra including optical activity were simulated with ab initio and density functional theory (DFT) methods. According to the results, small nonplanarity deviations may be detectable by nonpolarized spectroscopic techniques, albeit as subtle spectral changes. The optical activity methods, such as the vibrational circular dichroism (VCD), Raman optical activity (ROA), and electronic circular dichroism (CD, ECD), provide enhanced information about the amide nonplanarity, because planar amide is not optically active (chiral). For VCD, however, the inherently chiral contribution in most peptides and proteins most probably provides very weak signal in comparison with other contributions, such as the dipolar coupling. For the electronic CD, the nonplanarity contribution is relatively big and causes a strong CD couplet in the n–π* absorption region accompanied by a red frequency shift. The π–π* CD region is relatively unaffected. The ROA spectroscopy appears most promising for the nonplanarity detection and the inherent chiral signal may dominate entire spectral parts. The amide I and III vibrational ROA bands are most challenging experimentally because of their relatively weak coupling to other peptide vibrations. Chirality 2007. © 2007 Wiley‐Liss, Inc.