bluuebunny/crossref_metadata_2025 huggingface dataset:
Manipulating the phase morphology in PPS/PA66 blends using clay
Authors: Zou Hao , Ning Nanying , Su Run , Zhang Qin , Fu Qiang
Published: July 2007

By adding a small amount of clay into poly(p‐phenylene sulfide) (PPS)/polyamide 66 blends, the morphology was found to change gradually from sea–island into cocontinuity and lamellar supramolecular structure, as increasing of clay content. Clay was selectively located in the PA66 phase, and the exfoliated clay layers formed an edge‐contacted network. The change of morphology is not caused by the change of volume ratio and viscosity ratio but can be well explained by the dynamic interplay of phase separation between PPS and PA66 through preferential adsorption of PA66 onto the clay layers and through layer–layer repulsion. This provides a means of manipulating the phase morphology for the immiscible polymer blends. The mechanical and tribological properties of PPS/PA66 blends with different phase morphologies (different clay contents) were studied. Both tensile and impact strength of the blends were found obviously increased by the addition of clay. The antiwear property was greatly improved for the blends with cocontinuous phase form. Our work indicates that the phase‐separating behavior of polymer blends contained interacting clay can be exploited to create a rich diversity of new structures and useful nanocomposites. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 2007
Surface modification of aramid fibers with γ‐ray radiation for improving interfacial bonding strength with epoxy resin
Authors: Zhang Yanhua , Huang Yudong , Liu Li , Wu Lina
Published: July 2007

Co60 γ‐ray radiation as a simple and convenient method for surface modification of Armos aramid fibers was introduced in this article. Two kinds of gas mediums, N2 and air, were chosen to modify aramid fiber surface by γ‐ray irradiation. After fiber surface treatment, the interlaminar shear strength values of aramid/epoxy composites were enhanced by about 17.7 and 15.8%, respectively. Surface elements of aramid fibers were determined by XPS, the analysis of which showed that the ratio of oxygen/carbon was increased. The crystalline state of aramid fibers was determined by X‐ray diffraction instrument. The surface topography of fibers was analyzed by atomic force microscopy and scanning electron microscope. The degree of surface roughness and the wettability of fiber surface were both enhanced by γ‐ray radiation. The results indicated that γ‐ray irradiation technique, which is a suitable way of batch process for industrialization, can significantly improve the surface properties of aramid fibers reinforced epoxy resin matrix composites. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 2007
In situ fiber composites based on metallocene polyethylene matrices
Authors: Cárdenas Miguel Angel , Perera Rosestela , Villarreal Norky , Rosales Carmen , Pastor José María
Published: July 2007

Binary blends of metallocene polyethylenes with polyethylenes and polypropylene were made in a co‐rotating twin‐screw extruder. A stretching process was carried out afterwards in the melt state at the extruder's exit to study the effect of the induced orientation on their thermal and tensile properties. Capillary rheometry was performed to the neat polymers to determine the viscosity ratios of the blend components as a function of the shear rate. SEM and Micro‐Raman analyses were done to study the morphology of the stretched and nonstretched blends. As expected, an increase in the modulus and tensile stress was obtained through blending. Additionally, the elastomeric behavior of the metallocene polyethylene (mPE) sample is observed in all blends and it was not lost through blending. Nevertheless, all blends without stretching exhibited a negative deviation of the linear additivity rule of blending. The stretching of the blends made with metallocene polyethylenes as matrices and other types of PEs as dispersed phase did not improve the tensile properties, although some differences in the dispersed phases were found by DSC, and microfibrils could be seen in the drawn mPE/HDPE blend. However, blending with PP produced an improvement in the modulus and tensile stress of the drawn samples in comparison to their undrawn counterpart. The tensile stresses of PP blends are more sensitive to the drawing process than the modulus, which can be attributed to the appearance of large fibril fractions during this process. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 2007
Investigating the jet stretch in the wet spinning of PAN fiber
Authors: Zeng Xiaomei , Hu Juan , Zhao Jiongxin , Zhang Youwei , Pan Ding
Published: July 2007

The jet stretch of wet‐spun PAN fiber and its effects on the cross‐section shape and properties of fibers were investigated for the PAN‐DMSO‐H2O system. Evidently, the spinning parameters, such as dope temperature, bath concentration, and bath temperature, influenced the jet stretch. Also, under uniform conditions, the postdrawing ratio changed as well as that of jet stretch. When coagulation temperature was 35°C simultaneously with bath concentration of 70%, jet stretch impacted obviously the cross‐section shapes of PAN fiber, but had little effect when the temperature was below 10°C or above 70°C. As the jet stretch ratio increased, the crystallinity, crystal size, sonic orientation, and mechanical properties of the as‐spun fiber changed rapidly to a major value for jet stretch ratio of 0.9 where the cross section of as‐spun fiber was circular. With further increasing of jet stretch ratio, the properties changed slightly but the fiber shape was not circular. The results indicated that appropriate jet stretch, under milder formation conditions in wet‐spinning, could result in the higher postdrawing ratio and circular profile of PAN fiber, which were helpful to produce round PAN precursor with minor titer and perfect properties for carbon fiber. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 2007
Effect of furfuryl alcohol addition on the cure of furfuryl alcohol resin used in the glassy carbon manufacture
Authors: Gaefke C. B. , Botelho E. C. , Ferreira N. G. , Rezende M. C.
Published: July 2007

Glassy carbon can be manufactured practically without pores, named Monolithic Vitreous Carbon (MVC) or presenting up to 98% in transport pore volume, foam form, denominated Reticulated Vitreous Carbon (RVC). The glassy carbon processing is affected by some processing parameters, among them it can be cited the resin viscosity. The present work involves the optimization of RVC manufacture by monitoring the polyurethane (PU) foam impregnation with furfuryl alcohol resin with different viscosity values, which were obtained by dilution of the resin with different amounts of furfuryl alcohol. The resin samples used in the PU impregnation were characterized by thermal and rheological analyses. These results were correlated with scanning electron microscopy observations and compression test results of the impregnated polyurethane foam. The results show that the rheological behavior of the resin has significant influence on the polymerization step, affecting the homogeneity of impregnated foam and, consequently, its final properties, mainly the mechanical one. The impregnated foam prepared with the furfuryl alcohol resin diluted with 10% of furfuryl alcohol (η = 11.4 Pa s) showed higher compression values (0.26 MPa). © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 2007
Synthesis, characterization, thermal stability, conductivity, and band gap of a new aromatic polyether containing an azomethine as a side
Authors: Kaya İsmet , Yıldırım Mehmet
Published: July 2007

In this study, the oxidative polycondensation reaction conditions of 4‐[(4‐methylphenyl)iminomethyl]phenol (4‐MPIMP) were studied by using oxidants such as air O2, H2O2, and NaOCl in an aqueous alkaline medium between 50 and 90°C. The structures of the synthesized monomer and polymer were confirmed by FTIR, UV–vis, 1H–13C‐NMR, and elemental analysis. The characterization was made by TGA‐DTA, size exclusion chromatography (SEC), and solubility tests. At the optimum reaction conditions, the yield of poly‐4‐[(4‐methylphenyl)iminomethyl]phenol (P‐4‐MPIMP) was found to be 28% for air O2 oxidant, 42% for H2O2 oxidant, and 62% for NaOCl oxidant. According to the SEC analysis, the number–average molecular weight (Mn), weight–average molecular weight (Mw), and polydispersity index values of P‐4‐MPIMP were found to be 4400 g mol−1, 5100 g mol−1, and 1.159, using H2O2, and 4650 g mol−1, 5200 g mol−1, and 1.118, using air O2, and 5100 g mol−1, 5900 g mol−1, and 1.157, using NaOCl, respectively. According to TG analysis, the weight losses of 4‐MPIMP and P‐4‐MPIMP were found to be 85.37% and 72.19% at 1000°C, respectively. P‐4‐MPIMP showed higher stability against thermal decomposition. Also, electrical conductivity of the P‐4‐MPIMP was measured, showing that the polymer is a typical semiconductor. The highest occupied molecular orbital and the lowest unoccupied molecular orbital energy levels and electrochemical energy gaps (E) of 4‐MPIMP and P‐4‐MPIMP were found to be −5.76, −5.19; −3.00, −3.24; 2.76 and 1.95 eV, respectively. According to UV–vis measurements, optical band gaps (Eg) of 4‐MPIMP and P‐4‐MPIMP were found to be 3.34 and 2.82 eV, respectively. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 2007
Lignins for phenol replacement in novolac‐type phenolic formulations, part I: Lignophenolic resins synthesis and characterization
Authors: Tejado A. , Kortaberria G. , Peña C. , Labidi J. , Echeverría J. M. , Mondragon Inaki
Published: July 2007

Several lignin (L)‐based novolac‐type phenolic prepolymers with two phenol (P) substitution degrees have been synthesized using three L from different origin (kraft pine L, soda/anthraquinone (AQ) flax L, and sulfonated kraft softwood L). These lignophenolic (LPF) resins have been characterized by means of free P and formaldehyde (F) analysis, viscosity, chemical structure (FTIR), and thermal behavior (DSC). Temperature at which curing reaction begins (DSC), hardening time at several curing temperatures (rheology) and volumetric changes (PVT) have also been determined for the curing process with 10 wt % hexamethylenetetraamine (HMTA). All the results have been compared to those obtained for a commercial novolac. Depending on the L type employed a homogeneous material with lower curing onset temperature and gelation time than reference PF can be obtained even at high P substitution level (45 wt %). © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 2007
Changes of melanosome morphology associated with the differentiation of epidermal melanocytes in slaty mice
Authors: Hirobe Tomohisa , Abe Hiroyuki
Published: July 2007

The slaty (Dctslt) mutation is known to reduce the activity of dopachrome tautomerase, which converts dopachrome to 5,6‐dihydroxyindole‐2‐carboxylic acid in the pathway of eumelanin synthesis and to inhibit melanosome maturation in melanocytes. However, it is not known whether the inhibition of melanosome maturation in slaty melanocytes is developmentally regulated. To address this point, changes in the morphology and maturation of melanosomes in cultured epidermal melanocytes derived from newborn mice of wild‐type (black) and slaty mutant were surveyed under the electron microscope. In black melanocytes (Dct+), almost all melanosomes were elliptical stage IV melanosomes. However, in slaty melanocytes, numerous spherical stage III melanosomes with globular depositions of pigment in addition to elliptical stage III melanosomes with intraluminal fibrils were observed. Mixed‐type melanosomes containing both globular deposition and intraluminal fibrils of pigment were also observed. In slaty melanocytes, spherical and mixed‐type melanosomes were gradually decreased after birth, whereas elliptical melanosomes were gradually increased. Stage IV melanosomes were very few in slaty melanocytes, and the number did not increase after birth. These results suggest that the slaty mutation blocks the melanosome maturation at stage III and affects the melanosome morphology (elliptical or spherical) in a developmental stage‐specific manner. Anat Rec, 2007. © 2007 Wiley‐Liss, Inc.
Effects of keratinocyte growth factor on intra‐alveolar surfactant fixed in situ: Quantitative ultrastructural and immunoelectron microscopic analysis
Authors: Fehrenbach Heinz , Fehrenbach Antonia , Dietzel Erik , Tschernig Thomas , Krug Norbert , Grau Veronika , Hohlfeld Jens M.
Published: July 2007

Quantitative (immuno) transmission electron microscopy using design‐based stereology was performed on specimens collected by means of systematic uniform random sampling of rat lungs, which were fixed by vascular perfusion to stabilize intra‐alveolar surfactant in situ. This procedure ensures that the data recorded are representative of the whole organ. Ultrathin sections of specimens embedded at low temperature in Lowicryl HM20 were labeled by indirect immuno‐gold staining for surfactant protein A. We observed that, 3 days after treatment of lungs in vivo with truncated keratinocyte growth factor (ΔN23‐KGF), a potent mitogen of alveolar epithelial type II cells, surfactant protein A associated with the tubular myelin fraction of intra‐alveolar surfactant was increased by 47% in comparison with buffer‐treated control lungs. Despite the marked type II cell hyperplasia, the relative amount of ultrastructural surfactant subtypes was not significantly affected. Because surfactant protein A reduces the sensitivity to inhibition of the biophysical activity of surfactant by exudating plasma proteins, we propose that pretreatment of lungs with ΔN23‐KGF ameliorates adverse effects observed in acute lung injury following, for example, ischemia and reperfusion. Anat Rec, 2007. © 2007 Wiley‐Liss, Inc.
Regulation of embryonic lung vascular development by vascular endothelial growth factor receptors, Flk‐1 and Flt‐1
Authors: Yamamoto Yasutoshi , Shiraishi Isao , Dai Ping , Hamaoka Kenji , Takamatsu Tetsuro
Published: July 2007

The biological effects of vascular endothelial growth factor A (VEGF‐A) are mediated by fetal liver kinase‐1 (Flk‐1) and fms‐like tyrosine kinase‐1 (Flt‐1). In lung tissue, VEGF‐A is diffusely expressed throughout the embryonic stages, whereas the development of vascular endothelial cells is not uniform. Noting the signaling properties of the two receptors, we hypothesized that Flk‐1 and Flt‐1 regulate the embryonic development of lung vasculature. We herein show the spatiotemporal expression and experimental inhibition of Flk‐1 and Flt‐1 of embryonic mouse lung tissue. When Flk‐1 was predominantly expressed (embryonic day [E] 9.5–E13.5), then vascular endothelial cells actively proliferated. When Flt‐1 was enhanced (E14.5–E16.5), these cells less actively proliferated, thereby constituting organized networks. The treatment of cultured lung buds (E11.5) with antisense oligonucleotides complementary to Flk‐1 inhibited branching of capillaries and proliferation of endothelial cells. In contrast, the inhibition of Flt‐1 promoted the branching of capillaries and enhanced proliferation of endothelial cells. Of interest, inhibition of Flt‐1 promoted Flk‐1 expression. These results suggest that the two VEGF‐A receptors regulate pulmonary vascular development by modulating the VEGF‐A signaling. Anat Rec, 290:958–973, 2007. © 2007 Wiley‐Liss, Inc.
Dog kidney: Anatomical relationships between intrarenal arteries and kidney collecting system
Authors: Marques‐Sampaio Beatriz P.S. , Pereira‐Sampaio Marco A. , Henry Robert W. , Favorito Luciano A. , Sampaio Francisco J.B.
Published: July 2007

The detailed findings of canine intrarenal anatomy (collecting system and arteries) are presented. Ninety‐five three‐dimensional endocasts of the kidney collecting system together with the intrarenal arteries were prepared using standard injection–corrosion techniques and were studied. A single renal artery was observed in 88.4% of the casts. The renal artery divided into a dorsal and a ventral branch. Using the branching pattern of the ventral and dorsal divisions of the renal artery, the vessels were classified in type I or type II. Type I presented a cranial and a caudal artery, whereas type II presented a mesorenal and a caudal artery. Cranial branches of dorsal and ventral arteries supplied the cranial pole in 90.5% of the specimens. Caudal branches of the dorsal and the ventral divisions of the renal artery irrigated both the caudal pole and the mid‐zone of the kidney in 95.8% and 98.9% of the cases, respectively. In all casts, caudal branches of both dorsal and ventral arteries supplied the caudal pole. Therefore, the caudal branches of the ventral and dorsal divisions of the renal artery are of utmost importance in the kidney arterial supply. Although many results of renal and intrarenal anatomy in dogs may not be completely transposed to humans, the anatomical relationship between arteries and the collecting system in the cranial pole of the dog kidney is similar to those in man. This fact supports the use of the dog as an animal model for urologic procedures at the cranial pole. Anat Rec, 290:1017–1022, 2007. © 2007 Wiley‐Liss, Inc.
Differential Activation of c‐fos Immunoreactivity After Hypophysectomy in Developing and Adult Rats
Authors: Yuan Qiuju , Scott David E. , So Kwok‐Fai , Wu Wutian
Published: July 2007

The aim of the present study is to compare c‐fos expression in identified hypothalamic vasopressin (AVP) and oxytocin (OT) neurons in developing (PN7 and PN14) and adult rats following hypophysectomy using dual‐labeled immunostaining. Our results showed that hypophysectomy induced c‐fos expression in supraoptic (SON) and paraventricular (PVN) nuclei in both the developing and adult rats. Few or no positive cells were observed in the same nuclei in sham‐operated animals. Quantitative analysis for c‐fos and either of the above named neuropeptides revealed that almost all AVP and OT neurons in the adult and PN14 groups expressed c‐fos in response to hypophysectomy. In PN7, hypophysectomy also induced all AVP neurons to express c‐fos in SON and PVN. However, few OT neurons in the SON and PVN produced c‐fos after hypophysectomy. In addition, the time course of c‐fos expression was different in the developing and adult rats after hypophysectomy. The c‐fos expression in the developing rats exhibited a more prolonged induction in which staining for c‐fos persisted for at least 3 days after hypophysectomy compared with that in the adult in which c‐fos immunoreactivity disappeared within 24 hr post‐lesion. This study demonstrates that c‐fos expression after hypophysectomy is regulated differently during development. Anat Rec, 2007. © 2007 Wiley‐Liss, Inc.
Investigation of the impact of sarizotan on the pharmacokinetics of levodopa
Authors: Krösser Sonja , Neugebauer Roland , Chassard Didier , Kovar Andreas
Published: July 2007

Objective. To investigate the effect of sarizotan on the pharmacokinetics of levodopa in fixed combination with carbidopa or benserazide.

Methods. In this open‐label, randomized, crossover study, healthy male subjects (n=16) received levodopa 100 mg t.i.d. over two 5‐day periods, alone or in combination with sarizotan 5 mg b.i.d. Levodopa was administered with a dopa‐decarboxylase inhibitor (carbidopa 25 mg, n=8 or benserazide 25 mg, n=8). Pharmacokinetic parameters of levodopa were obtained on days 1 and 5.

Results. ANOVA showed the Cmax values for levodopa were not significantly different with or without sarizotan after single doses (1001 vs 1082 ng/ml; point estimate [PE] 1.10, 90% confidence intervals [CI] 0.83–1.45) or at steady‐state (1549 vs 1663 ng/ml; PE 1.06, 90% CI 0.89–1.27); nor were AUC values for single doses (1661 vs 1665 ngh/ml; PE 1.01, 90% CI 0.91–1.11) or at steady‐state (2462 vs 2482 ngh/ml; PE 1.01, 90% CI 0.97–1.05). Seven subjects reported adverse events of mild‐to‐moderate intensity; the most frequent were headaches and dizziness.

Conclusion. Coadministration of sarizotan with levodopa, in combination with a dopa‐decarboxylase inhibitor had no effect on the pharmacokinetics or adverse event profile of levodopa. Copyright © 2007 John Wiley & Sons, Ltd.
Artificial Reconstruction of Two Cryptic Angucycline Antibiotic Biosynthetic Pathways
Authors: Palmu Kaisa , Ishida Keishi , Mäntsälä Pekka , Hertweck Christian , Metsä‐Ketelä Mikko
Published: July 2007

Genome‐sequencing projects have revealed that Streptomyces bacteria have the genetic potential to produce considerably larger numbers of natural products than can be observed under standard laboratory conditions. Cryptic angucycline‐type aromatic polyketide gene clusters are particularly abundant. Sequencing of two such clusters from Streptomyces sp. PGA64 and H021 revealed the presence of several open reading frames that could be involved in processing the basic angucyclic carbon skeleton. The pga gene cluster contains one putative FAD‐dependant monooxygenase (pgaE) and a putatively bifunctional monooxygenase/short chain alcohol reductase (pgaM), whereas the cab cluster contains two similar monooxygenases (cabE and cabM) and an independent reductase (cabV). In this study we have reconstructed the biosynthetic pathways for aglycone synthesis by cloning and sequentially expressing the angucycline tailoring genes with genes required for the synthesis of the unmodified angucycline metabolite—UWM6—in Streptomyces lividans TK24. The expression studies unequivocally showed that, after the production of UWM6, the pathways proceed through the action of the similar monooxygenases PgaE and CabE, followed by reactions catalysed by PgaM and CabMV. Analysis of the metabolites produced revealed that addition of pgaE and cabE genes directs both pathways to a known shunt product, rabelomycin, whereas expression of all genes from a given pathway results in the production of the novel angucycline metabolites gaudimycin A and B. However, one of the end products is most probably further modified by endogenous S. lividans TK24 enzymes. These experiments demonstrate that genes that are either inactive or cryptic in their native host can be used as biosynthetic tools to generate new compounds.
The Exchange Coupling in Cr3On (n = 0—3) Clusters.
Authors: Janssens Ewald , Hou Xin Juan , Neukermans Sven , Wang Xin , Silverans Roger E. , Lievens Peter , Nguyen Minh Tho
Published: July 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‐Principles Study on the Structure and Elasticity of LaNi5 and LaNi4.25Al0.75.
Authors: Zhang Chuanyu , Gao Tao , Zhang Yunguang , Zhou Jingjing , Tang Lijuan
Published: July 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 Oxide Ba6Ga2Co11O26: A New Close‐Packed Stacking Derived from the Hexagonal Perovskite.
Authors: Pelloquin D. , Perez O. , Martinet G. , Hebert S. , Maignan A.
Published: July 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.
Analysis of Phase Transition Pathways in X3H(SO4)2 (X: Rb, NH4, K, Na): Variable Temperature Single‐Crystal X‐Ray Diffraction Studies.
Authors: Swain Diptikanta , Guru Row Tayur N.
Published: July 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.
Transformation of AeIn4 Indides (Ae: Ba, Sr) into an AeAu2In2 Structure Type Through Gold Substitution.
Authors: Dai Jing‐Cao , Dorbett John D.
Published: July 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.
Commercial Fe‐ or Co‐Containing Carbon Nanotubes as Catalysts for NH3 Decomposition.
Authors: Zhang Jian , Comotti Massimiliano , Schueth Ferdi , Schloegl Robert , Su Dang Sheng
Published: July 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.
Ultraviolet Absorption Spectrum of Chlorine Peroxide, ClOOCl.
Authors: Pope Francis D. , Hansen Jaron C. , Bayes Kyle D. , Friedl Randall R. , Sander Stanley P.
Published: July 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 Structures of Mo3Se7Te2Br10, Mo3Se7Tel6, and Mo6Te21I22 Containing TeX3‐ (X: Br, I) Ligands Coordinated to a Triangular Cluster Core.
Authors: Sokolov Maxim N. , Gushchin Artem L. , Abramov Pavel A. , Virovets Alexander V. , Peresypkina Eugenia V. , Fedin Vladimir P.
Published: July 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.
Combination of Lacunary Polyoxometalates and High‐Nuclear Transition Metal Clusters under Hydrothermal Conditions. Part 3. Structure and Characterization of [Cu(enMe)2]2{ [Cu(enMe)2(H2O)]2 [Cu6(enMe)2 (B‐a‐SiW9O34)2]}×4H2O.
Authors: Zheng Shou‐Tian , Yuan Da‐Qiang , Zhang Jie , Yang Guo‐Yu
Published: July 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.
Structure‐Directing Effects in the Supramolecular Intercluster Compound [Au9(PPh3)8]2 [V10O28H3]2: Long‐Range versus Short‐Range Bonding Interactions.
Authors: Schulz‐Dobrick Martin , Jansen Martin
Published: July 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 Hydrogenation of Olefins with Planar Chiral Iridium Ferrocenyloxazolinylphosphine Complexes.
Authors: Li Xinsheng , Li Qing , Wu Xiaohua , Gao Yongguang , Xu Dongcheng , Kong Lichun
Published: July 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.
Piperylene Sulfone: A Labile and Recyclable DMSO Substitute.
Authors: Vinci D. , Donaldson M. , Hallett J. P. , John E. A. , Pollet P. , Thomas C. A. , Grilly J. D. , Jessop P. G. , Liotta C. L. , Eckert C. A.
Published: July 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 Conjugate Addition of Heterocyclic Compounds to α,β‐Unsaturated Carbonyl Compounds by Hafnium Salts and Scandium Salts.
Authors: Kawatsura Motoi , Aburatani Sachiko , Uenishi Junichi
Published: July 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 1(3H)‐Imino‐2‐benzothiophene and 1‐Imino‐1H‐2‐benzothiopyran Derivatives by Reactions of Secondary o‐(Vinyl)thiobenzamide Derivatives with Iodine.
Authors: Kobayashi Kazuhiro , Fujita Seiki , Hase Masanori , Morikawa Osamu , Konishi Hisatoshi
Published: July 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.
Gold‐Catalyzed Efficient Formation of α,β‐Unsaturated Ketones from Propargylic Acetates.
Authors: Yu Meng , Li Guotao , Wang Shaozhong , Zhang Liming
Published: July 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.
Solvent‐Free Synthesis of Racemic α‐Aminonitriles.
Authors: Baeza Alejandro , Najera Carmen , Sansano Jose N.
Published: July 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 Ring‐Closing Metathesis to Form Tetrasubstituted Olefins.
Authors: Berlin Jacob M. , Campbell Katie , Ritter Tobias , Funk Timothy W. , Chlenov Anatoly , Grubbs Robert H.
Published: July 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.
Ni(0)‐Promoted Hydroxycarboxylation of 1,2‐Dienes by Reaction with CO2 and O2.
Authors: Aoki Masao , Izumi Sawa , Kaneko Motomu , Ukai Kazutoshi , Takaya Jun , Iwasawa Nobuharu
Published: July 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 Stereoselective Synthesis of Stereochemically Defined Polyhydroxylated Propargylamines by Alkynylation of N‐Benzylimines Derived from (R)‐Glyceraldehyde.
Authors: Diez Roberto , Badorrey Ramon , Diaz‐de‐Villegas Maria D. , Galvez Jose A.
Published: July 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 Electrophilic Fluorination of α‐Nitro Esters.
Authors: Ramirez Jesus , Huber Dominique P. , Togni Antonio
Published: July 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 Rhodium‐Catalyzed Double Hydroaminocarbonylation of Alkynes with Carbon Monoxide and Amines Affording 1,4‐Diamide Derivatives.
Authors: Huang Qiufeng , Hua Ruimao
Published: July 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.
Regio‐ and Stereoselective Head‐to‐Head Photo[2 + 2]cycloaddition of 3‐(1‐Methyl‐2‐phenylsulfanyl‐1H‐imidazol‐5‐yl)propenoates.
Authors: Ohta Shunsaku , Khadeer Abdul , Kakuno Akiko , Kawasaki Ikuo , Yamashita Masayuki
Published: July 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—Lewis Acid Catalyzed Asymmetric Diels—Alder Reactions Between Dienes and α,β‐Unsaturated Ketones.
Authors: Rickerby Jenny , Vallet Martial , Bernardinelli Gerald , Viton Florian , Kuendig E. Peter
Published: July 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 Carbon—Carbon Bond Formation at the β‐Position of Cyclic Ketones: Oxidative Michael Addition with Alkyl Malonates.
Authors: Matsuo Jun‐ichi , Kawai Hiroki , Ishibashi Hiroyuki
Published: July 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.
Iridium‐Catalyzed Synthesis of Primary Allylic Amines from Allylic Alcohols: Sulfamic Acid as Ammonia Equivalent.
Authors: Defieber Christian , Ariger Martin A. , Moriel Patricia , Carreira Erick M.
Published: July 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 Novel Route for the Synthesis of Highly Congested Aryl‐Tethered 2‐Aminobenzylamines Through Ring Transformation of 2‐Pyranones.
Authors: Farhanullah Farhanullah , Samrin Farhana , Ram Vishnu Ji
Published: July 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 Simple Approach to Unsymmetric Atropoisomeric Bipyridine N,N′‐Dioxides and Their Application in Enantioselective Allylation of Aldehydes.
Authors: Hrdina Radim , Valterova Irena , Hodacova Jana , Cisarova Ivana , Kotora Martin
Published: July 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 Synthesis of Unsymmetrical Chiral Salen Ligands Derived from 2‐Hydroxynaphthaldehyde and Substituted Salicylaldehydes.
Authors: Ambroziak Krzysztof , Szypa Magdalena
Published: July 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 α‐Fluoro‐β‐trifluoromethyl Alka‐2,4‐dienes.
Authors: Shen Yanchang , Wang Guoping
Published: July 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.
Rate Enhancement of the Morita—Baylis—Hillman Reaction Through Mechanochemistry.
Authors: Mack James , Shumba Maxwell
Published: July 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.
Oxidative Rearrangements of Arylalkanones with 1H‐1‐Hydroxy‐5‐methyl‐1,2,3‐benziodoxathiole 3,3‐Dioxide, a “Green” Analogue of Koser′s Reagent.
Authors: Justik Michael W.
Published: July 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(I) Iodide Catalyzed Arylation of Acetoacetate to Yield 2‐Arylacetic Acid Esters.
Authors: Zeevaart Jacob G. , Parkinson Christopher J. , de Koning Charles B.
Published: July 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 Novel Heck Reaction Catalyzed by Co Hollow Nanospheres in Ligand‐Free Condition.
Authors: Zhou Ping , Li Yingguang , Sun Peipei , Zhou Jiahong , Bao Jianchun
Published: July 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.
Regio‐ and Stereoselective Copper‐Catalyzed Carbozincation Reactions of Alkynyl Sulfoximines and Sulfones.
Authors: Sklute Genia , Bolm Carsten , Marek Ilan
Published: July 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 Bimetallic Rhodium Catalyst for the Direct Arylation of Unactivated Arenes.
Authors: Proch Sebastian , Kempe Rhett
Published: July 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 Direct Aldol Reaction “on Water” Promoted by Chiral Organic Catalysts.
Authors: Guizzetti Stefania , Benaglia Maurizio , Raimondi Laura , Celentano Giuseppe
Published: July 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 Enantioselective Michael Additions of α‐Cyanoacetate with Chalcones Catalyzed by Bifunctional Cinchona‐Derived Thiourea Organocatalyst.
Authors: Gu Chun‐ling , Liu Li , Sui Yong , Zhao Jun‐Lin , Wang Dong , Chen Yong‐Jun
Published: July 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.
Straightforward Construction of Diarylmethane Skeletons via Aryne Insertion into Carbon—Carbon σ‐Bonds.
Authors: Yoshida Hiroto , Watanabe Masahiko , Morishita Takami , Ohshita Joji , Kunai Atsutaka
Published: July 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.
2‐α‐Hydroxyalkyl‐ and 2,7‐Di(α‐hydroxyalkyl)‐1,8‐bis(dimethylamino)naphthalenes: Stabilization of Nonconventional In/Out Conformers of “Proton Sponges” via N×××H—O Intramolecular Hydrogen Bonding. A Remarkable Kind of Tandem Nitrogen Inversion.
Authors: Pozharskii Alexander F. , Degtyarev Alexander V. , Ryabtsova Oksana V. , Ozeryanskii Valery A. , Kletskii Mikhail E. , Starikova Zoya A. , Sobczyk Lucjan , Filarowski Alexander
Published: July 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.
Microwave‐Assisted Asymmetric Suzuki—Miyaura and Negishi Cross‐Coupling Reactions: Synthesis of Chiral Binaphthalenes.
Authors: Genov Miroslav , Almorin Antonio , Espinet Pablo
Published: July 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.
DNA‐Mediated Enantioselective Carbon—Fluorine Bond Formation
Authors: Shibata Norio , Yasui Hiroyuki , Nakamura Shuichi , Toru Takeshi
Published: July 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 N‐Imino‐β‐lactams from 2,3‐Diaza‐1,3‐dienes (Azines) Mediated by POCl3.
Authors: Sharma S. D. , Anand R. D. , Kaur Gurpreet
Published: July 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.
Hg(OAc)2×0.1Sc(OTf)3‐Catalyzed Cycloisomerization of 2‐(4‐Pentynyl)furan.
Authors: Yamamoto Hirofumi , Sasaki Ikuo , Imagawa Hiroshi , Nishizawa Mugio
Published: July 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 Substituted 2‐Aminobenzo[b]thiophenes.
Authors: Solovyev Andrey Y. , Androsov Dmitry A. , Neckers Douglas C.
Published: July 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.
Dy(OTf)3 as a Versatile Catalyst for the Synthesis of 3‐Pyrrolyl‐indolinones and Pyrrolyl‐indeno[1,2‐b]quinoxalines.
Authors: Yadav J. S. , Reddy B. V. Subba , Jain Ruchi , Reddy Ch. Suresh
Published: July 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.
Rhodium‐Catalyzed Intramolecular Alkyne‐carbodiimide Pauson—Khand‐Type Reaction.
Authors: Saito Takao , Sugizaki Katsuya , Otani Takashi , Suyama Toshiyuki
Published: July 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.
Thermal and Acid‐Catalyzed Transformations of 3H‐Pyrazoles (IV), (V) Obtained from Diphenyldiazomethane and Methyl Phenylpropiolate.
Authors: Fedorov A. A. , Duisenbaev Sh. E. , Razin V. V. , Kuznetsov M. A. , Linden E.
Published: July 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 2‐Trifluoromethyl and 2‐Difluoromethyl Substituted Benzo‐1,3‐diazoles.
Authors: Ge Fenglian , Wang Zengxue , Wan Wen , Lu Wencong , Hao Jian
Published: July 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 Biological Significance of 2‐Mercaptobenzoxazole Derivatives.
Authors: Srivastava Santosh Kumar , Jain Ashish , Srivastava Savitri Devi
Published: July 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.
Phenoxy Thiazole Derivatives as Potent and Selective Acetyl‐CoA Carboxylase 2 Inhibitors: Modulation of Isozyme Selectivity by Incorporation of Phenyl Ring Substituents.
Authors: Clark Richard F. , Zhang Tianyuan , Wang Xiaojun , Wang Rongqi , Zhang Xiaolin , Camp Heidi S. , Beutel Bruce A. , Sham Hing L. , Gu Yu Gui
Published: July 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 Some Novel 4‐Thiazolidinone Compounds and Their Application as Potential Antimicrobial Agent.
Authors: Patel J. A. , Mistry B. D. , Desai K. R.
Published: July 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 and Synthesis of Some New Thiazolo[3,2‐b]‐1,2,4‐triazole‐5(6H)‐ones Substituted with Flurbiprofen as Antiinflammatory and Analgesic Agents.
Authors: Dogdas Emine , Tozkoparan Birsen , Kaynak Filiz Betuel , Eriksson Lars , Kuepeli Esra , Yesilada Erdem , Ertan Mevluet
Published: July 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 Biological Activity of Some N‐Aryl‐4‐(5‐methyl‐[1,3,4]‐oxadiazolin‐2‐one‐3‐yl) Substituted Benzamides from 3‐(4‐Carboxy)phenylsydnone.
Authors: Latthe Prashant R. , Badami Bharati V.
Published: July 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 2′‐(Substituted)benzylidene Hydrazino‐5‐arylamino‐1,3,4‐thiadiazoles and Their Antimicrobial Activity.
Authors: Burghate Megha K. , Gandhe Shital V. , Ajmire M. G. , Berad B. N.
Published: July 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 and Efficient Catalysts for the One‐Pot Synthesis of 3,4‐Dihydropyrano[c]chromene Derivatives in Aqueous Media.
Authors: Abdolmohammadi Shahrzad , Balalaie Saeed
Published: July 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 Hydrogenation of Quinolines Catalyzed by Ir(BINAP)‐Cored Dendrimers: Dramatic Enhancement of Catalytic Activity.
Authors: Wang Zhi‐Jian , Deng Guo‐Jun , Li Yong , He Yan‐Mei , Tang Wei‐Jun , Fan Qing‐Hua
Published: July 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 Synthesis of Oxazolo[3,2‐a][1,10]phenanthrolines via a New Multicomponent Reaction.
Authors: Maghsoodlou Malek Taher , Marandi Ghasem , Hazeri Nourollah , Aminkhani Ali , Kabiri Roya
Published: July 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.
Efficient Synthesis of Imidazo[1,2‐a]pyridin‐3(2H)‐ones.
Authors: Adib Mehdi , Mahdavi Mohammad , Abbasi Alireza , Jahromi Amin Haghighat , Bijanzadeh Hamid Reza
Published: July 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 Electron‐Transporting Ability of 3,6‐Diaryl‐4,5‐diazafluorenes Modified Using Direct Arylation.
Authors: Ono Katsuhiko , Nagano Kyohei , Suto Michitaka , Saito Katsuhiro
Published: July 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 Novel Highly Stereoselective Synthesis of 2,3‐Disubstituted 3H‐Quinazoline‐4‐one Derivatives.
Authors: Zhichkin Paul , Kesicki Edward , Treiberg Jennifer , Bourdon Lisa , Ronsheim Matthew , Ooi Hua Chee , White Stephen , Judkins Angela , Fairfax David
Published: July 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 Microwave Improvement in the Synthesis of the Quinazoline Scaffold.
Authors: Chilin Adriana , Marzaro Giovanni , Zanatta Samuele , Guiotto Adriano
Published: July 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.
Chemoselective Oxidation of 6‐Hydroxyalkylpteridine and Its Application to the Synthesis of 6‐Acyl‐7,8‐dihydropteridines.
Authors: Landge Sudhir S. , Kudoh Kazunari , Yamada Yuri , Murata Shizuaki
Published: July 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.
Selective One‐Pot Synthesis of Substituted Pyrrole‐3‐phosphonates from α‐Cyanomethyl‐β‐ketoesters.
Authors: Demir Ayhan S. , Tural Servet
Published: July 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.
Selenylated Dienes: Synthesis, Stereochemical Studies by 77Se NMR, and Transformation into Functionalized Allenes.
Authors: Redon Sebastien , Berkaoui Anne‐Lise Berthe , Pannecoucke Xavier , Outurquin Francis
Published: July 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 Some Bioactive Analogues of Phthalein Dyes and Their Anticandidal Activity.
Authors: Chamoli R. P. , Prakash Shailendra , Kothiyal D. P. , Joshi Veena
Published: July 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.