bluuebunny/crossref_metadata_2025_split huggingface dataset:
Correlation between CD105 expression and postoperative recurrence and metastasis of hepatocellular carcinoma
Authors: Yang Lian-yue , Lu Wei-qun , Huang Geng-wen , Wang Wei 
Published: May 2006

Abstract

Background
Angiogenesis is one of the mechanisms most critical to the postoperative recurrence and metastasis of hepatocellular carcinoma (HCC). Thus, finding the molecular markers associated with angiogenesis may help identify patients at increased risk for recurrence and metastasis of HCC. This study was designed to investigate whether CD105 or CD34 could serve as a valid prognostic marker in patients with HCC by determining if there is a correlation between CD105 or CD34 expression and postoperative recurrence or metastasis.

Methods
Immunohistochemical staining for the CD105, CD34 and vascular endothelial growth factor (VEGF) antibodies was performed in 113 HCC tissue specimens containing paracarcinomatous tissue and in 14 normal liver tissue specimens. The quantitation of microvessels identified by anti-CD105 and anti-CD34 monoclonal antibodies and the semiquantitation of VEGF expression identified by anti-VEGF monoclonal antibody were analyzed in conjunction with the clinicopathological characteristics of the HCC and any available follow-up information about the patients from whom the specimens were obtained.

Results
CD105 was not expressed in the vascular endothelial cells of any normal liver tissue or paracarcinomatous liver tissue but was expressed in the vascular endothelial cells of all HCC tissue. In contrast, CD34 was expressed in the vascular endothelial cells of normal liver tissue, paracarcinomatous tissue, and HCC tissue in the following proportions of specimens: 86.7%, 93.8%, and 100%, respectively. The microvascular densities (MVDs) of HCC determined by using an anti-CD105 mAb (CD105-MVD) and an anti-CD34 mAb (CD34-MVD), were 71.7 ± 8.3 (SD) and 106.3 ± 10.4 (SD), respectively. There was a significant correlation between CD105-MVD and CD34-MVD (r = 0.248, P = 0.021). Although CD34-MVD was significantly correlated with VEGF expression (r = 0.243, P = 0.024), CD105-MVD was more closely correlated (r = 0.300, P= 0.005). The correlation between microscopic venous invasion and CD105-MVD, but not CD34-MVD, was also statistically significant (r = 0.254, P = 0.018). Univariate analysis showed that CD105-MVD was significantly correlated with the 2-year overall survival rate (P = 0.014); CD34-MVD was not (P = 0.601). Multivariate analysis confirmed that CD105-MVD was an independent prognostic factor and that CD34-MVD was not.

Conclusion
The anti-CD105 mAb is an ideal instrument to quantify new microvessels in HCC as compared with anti-CD34 mAb. CD105-MVD as compared with CD34-MVD is relevant a significant and independent prognostic indicator for recurrence and metastasis in HCC patients.
Allelic drop-out may occur with a primer binding site polymorphism for the commonly used RFLP assay for the -1131T>C polymorphism of the Apolipoprotein AV gene
Authors: Ward Kirsten J , Ellard Sian , Yajnik Chittaranjan S , Frayling Timothy M , Hattersley Andrew T , Venigalla Prathyusha NS , Chandak Giriraj R 
Published: May 2006

Abstract

Apolipoprotein AV (ApoAV) gene variant, -1131T>C, is associated with increased triglyceride concentrations in all ethnic groups studied. An MseI based RFLP analysis is the most commonly used method for genotyping this SNP. We genotyped a large cohort comprising 1185 Asian Indians and 173 UK Caucasians for -1131T>C using an ARMS-PCR based tetra-primer method. For quality control, we re-genotyped approximately 10% random samples from this cohort utilizing the MseI RFLP, which showed a 2.9% (3/102) genotyping error rate between the two methods. To investigate further, we sequenced the 900 bp region around the -1131T>C polymorphism in 25 Asian Indians and 15 UK Caucasians and found a number of polymorphisms including the -987C>T polymorphism. Further analysis of the -987C>T SNP showed a higher rare allele frequency of 0.23 in Asian Indians (n = 158) compared to 0.09 in the UK Caucasians (n = 157). This SNP is located 4 bp from the 3' end of the RFLP forward primer and is in weak linkage disequilibrium with -1131T>C variant (r2 = 0.084 and D' = 1). Repeated RFLP analysis of seven subjects heterozygous for -987C>T (seven times), showed discordant results with the sequence at -1131T>C SNP nearly one third (15/49) of the time. We conclude that presence of -987C>T polymorphism in the forward primer of the MseI RFLP assay may lead to allelic drop-out and generate unforeseen errors in genotyping the -1131T>C polymorphism. Our results also emphasise the need for careful quality control in all molecular genetic studies, particularly while transferring genotyping methods between various ethnic groups.
Photo-induced Ionic Conductivity Switching in Polymer/Photochromic Liquid Crystal Composite Films Containing Lithium/Crown Ether Complex
Authors: Kimura Keiichi , Suzuki Tatsuya , Yokoyama Masaaki 
Published: May 2006

Abstract
Thin composite films consisting of poly(vinyl chloride), azobenzene liquid crystal, lithium ion/12-crown-4 complex exhibited reversible photo-induced switching of ionic conductivity based on the photochromic phase transition of the azobenzene derivative. The ionic conductivities increased by more than two orders of magnitude by UV light and then reverted to the initial state by visible light at ambient temperature.
Mechanism for Electron-Transfer Induced Isomerization of Stilbene as Studied by Magnetic Field Effects
Authors: Kuriyama Yasunao , Arai Tatsuo , Sakuragi Hirochika , Tokumaru Katsumi 
Published: May 2006

Abstract
External magnetic field effects and laser flash photolysis were applied to elucidating the mechanism of dicyanoanthracene-sensitized isomerization of stilbene in acetonitrile, indicating that the stilbene cation radical is a key intermediate for isomerization. Sensitizer dependence of the isomerization efficiency is discussed in terms of the rate of back electron transfer in singlet radical pairs.
Stepwise Reactions of Dimethylsilyl Acetylenes with Octacarbonyldicobalt
Authors: Kotani Sonae , Matsumoto Toshihiro , Yamaguchi Hidemasa , Shiina Kyo , Sonogashira Kenkichi 
Published: May 2006

Abstract
Treatment of bis(dimethylsilyl)acetylene 1 with more than two molar amount of octacarbonyldicobalt in cyclohexane gave the complex [(CO)4CoSiMe2C≡C–SiMe2Co(CO)4]Co2(CO)6, while treatment of 1 with one or 1.5 molar amount of octacarbonyldicobalt produced the complexes [HSiMe2C≡CSiMe2H]Co2(CO)6 and [HSiMe2C≡CSiMe2Co(CO)4]Co2(CO)6, respectively. The reactions of dimethyl(phenylethynyl)silane and its homologs with Co2(CO)8 were also investigated.
Efficient Asymmetric Hydrogenations of (Z)-2-Acetamidoacrylic Acid Derivatives with the Cationic Rhodium Complex of (2S,4S)-MOD-BPPM
Authors: Takahashi Hisashi , Achiwa Kazuo 
Published: May 2006

Abstract
The preparation of (2S,4S)-MOD-BPPM ((2S,4S)-N-(t-butoxycarbonyl)-4-[[bis(4′-methoxy-3′,5′-dimethylphenyl)]phosphino]-2-[[[bis(4′-methoxy-3′,5′-dimethylphenyl)]phosphino]methyl]pyrrolidine) and its application to highly effective asymmetric hydrogenations of (Z)-2-acetamidoacrylic acid derivatives are described.
Origin of Multiline ESR Signal Observed for Manganese(III) Complexes with N-Alkyl-N,N-bis(benzimidazol-2-ylmethyl)amine
Authors: Nishida Yuzo , Haga Sachiko , Tokii Tadashi 
Published: May 2006

Abstract
We have observed that some manganese(III) complexes with N-alkyl-N,N-bis(benzimidazol-2-ylmethyl)amine exhibit a multiline ESR signal around g = 2 in the frozen state(below 77 K), and this has been attributed to the superposition of at least three components with 11 lines due to the dimeric manganese(III) pair.
Photoinduced Selective Synthesis of Ethylene Glycol from Methanol in the Presence of Hydrogen Peroxide
Authors: Shimizu Yuichi , Sugimoto Shun’ichi , Suzuki Nobutake 
Published: May 2006

Abstract
Ethylene glycol was selectively synthesized by UV irradiation of the nitrogen-saturated methanol containing hydrogen peroxide. The concentration of ethylene glycol and the selectivity were affected markedly by a H2O2 feeding rate.
Synthesis of 1,2,4-Tri-O-acetyl-5-deoxy-5-[(R,S)-ethyl- and phenylphosphino]-3-O-methyl-α,β-d-xylopyranoses and an Efficient Conversion to the Corresponding 5-(Phosphinothioyl)-d-xylopyranoses
Authors: Yamamoto Hiroshi , Hanaya Tadashi , Shigetoh Nobuyuki , Kawamoto Heizan , Inokawa Saburo 
Published: May 2006

Abstract
Reduction of 1,2,4-tri-O-acetyl-5-deoxy-5-[(R,S)-ethyl- and phenylphosphinyl]-α,β-d-xylopyranoses with trichlorosilane in benzene in the presence of triethylamine smoothly afforded the corresponding title 5-phosphino-d-xylopyranoses (10–13a,b) without causing epimerization at C-1 and ring-P. Treatment of 10–13 with sulfur efficiently provided the corresponding (phosphinothioyl)-in-ring sugar analogues.
The 1H NMR Spectral Detection and Kinetic Analysis of the Conformational Change of 4,4,5,5- and 6,6,7,7-Tetramethoxycycloheptadienones
Authors: Mori Akira , Kubota Tadahiko , Takeshita Hitoshi 
Published: May 2006

Abstract
The variable temperature 1H NMR measurements of 4,4,5,5- and 6,6,7,7-tetramethoxycycloheptadienones disclosed an existence of the bond-twisting conformers. The complete line shape analysis by the simulation method gave the activation parameters of the interconversion barrier.
Water Sensitivity of a [Fe4S4(SR)4]1− Cluster and Its Stabilization
Authors: Ohno Ryotaro , Ueyama Norikazu , Nakamura Akira 
Published: May 2006

Abstract
The electrochemical studies of 4Fe–4S high potential iron–sulfur protein model complexes revealed the high sensitivity of [Fe4S4(SR)4]1− cluster to water. Such sensitivity was lowered by hydrophobic groups of thiolate ligands in close proximity to a cluster.
Spontaneous Formation of a Network of Helical Strands from Ditetradecanoyl- and Didodecanoyl-5′-phosphatidylcytidine
Authors: Yanagawa Hiroshi , Ogawa Yoko , Furuta Hiroyuki , Tsuno Katsushige 
Published: May 2006

Abstract
Phospholipid-nucleoside conjugates containing two tetradecanoyl or dodecanoyl groups and a cytidyl group spontaneously assemble to form a network structure of helical strands in aqueous solution. The network structures consisted of a double helical strand and two single helical strands. The network structures were gradually converted into linearly extended double helical strands.
Selective Determination of Vanadium in River Water by High-performance Liquid Chromatography
Authors: Uehara Nobuo , Morimoto Kazuhiro , Shimizu Tokuo , Shijo Yoshio 
Published: May 2006

Abstract
A method for the selective determination of vanadium in river water using high-performance liquid chromatography after preconcentration with a convenient evaporator was investigated. 2-(5-Bromo-2-pyridylazo)-5-(N-propyl-N-sulfopropylamino)phenol was used as a precolumn chelating reagent for V(V) in the presence of CyDTA. The detection limit of the proposed method was 35 ng 1−1 after the 25 fold enrichment procedure.
Facile Synthesis of Chloro-substituted Aromatic Ethers by Use of Benzyltrimethylammonium Tetrachloroiodate
Authors: Kajigaeshi Shoji , Shinmasu Youichi , Fujisaki Shizuo , Kakinami Takaaki 
Published: May 2006

Abstract
The reaction of aromatic ethers with a calculated amount of benzyltrimethylammonium tetrachloroiodate in acetic acid (or dichloromethane) under mild conditions gave, selectively, the objective chloro-substituted aromatic ethers in good yields.
Syntheses of 3-Cyano-2H-thiin S-Imides and Ylides and Their Base-Promoted Rearrangement
Authors: Motoki Shinichi , Takahashi Narushi , Eguchi Kazuhiro , Saito Takao 
Published: May 2006

Abstract
The reaction of 3-cyano-2H-thiin derivatives with chloramine salt or diazomalonate gave the corresponding sulfilimines or sulfonium ylides and dihydrothiepin derivatives. These products rearranged by the action of DBU eventually to afford pyridine derivatives or benzofuran and benzothiophene derivatives.
Studies of cis-trans Isomerization of Stilbene Anion Radicals by Means of a Flow-Electrolysis ESR Method
Authors: Nozaki Koichi , Naito Akira , Ho Tong-Ing , Hatano Hiroyuki , Okazaki Satoshi 
Published: May 2006

Abstract
Mechanism and kinetics of the cis-trans isomerization of stilbene anion radicals was revealed with a flow-electrolysis ESR method in N,N-dimethylformamide.
Substituent Effect on the Gas Phase Basicity of Pyridine N-Oxide
Authors: Mishima Masaaki , Terasaki Takahiro , Fujio Mizue , Tsuno Yuho , Takai Yoshio , Sawada Masami 
Published: May 2006

Abstract
Gas phase basicities of pyridine N-oxides were determined by means of a pulsed ICR spectrometer. It has been shown that the resonance demand for π-acceptors is intrinsically greater in pyridine N-oxide than in pyridine and that the attenuation of substituent effect owing to solvation stabilization is more significant in the former system.
Observation of the Ultrafine Platinum Particles over an Active Carbon Catalyst Support with a High-Resolution Scanning Electron Microscope
Authors: Yahikozawa Kiyochika , Kaneko Fuminori , Tsutsui Tsuyoshi , Nakagawa Mine , Yamada Mitsuhiko , Takasu Yoshio 
Published: May 2006

Abstract
Ultrafine platinum particles larger than ca. 2 nm in diameter over a powdery active carbon catalyst support have clearly been observed with a high-resolution scanning electron microscope.
α-Methoxy-α-trifluoromethylpropionic Acid (MTPr). A New Chiral Derivatizing Reagent for GC Separation of Enantiomeric Amino Acids
Authors: Yasuhara Fujiko , Takeda Masayuki , Ochiai Yoshiro , Miyano Sotaro , Yamaguchi Shozo 
Published: May 2006

Abstract
A title homochiral acid has been synthesized and shown to be an efficient chiral derivatizing reagent for capillary gas chromatographic separation of enantiomeric amino acids at considerably low column temperature.
The Synthesis of a [13][15]Fulvalene Derivative
Authors: Higuchi Hiroyuki , Kitamura Keiko , Ojima Juro , Yamamoto Koji , Yamamoto Gaku 
Published: May 2006

Abstract
The first example of fuluvalene derivative containing two monocyclic large-membered rings, 1-(5,10-dimethyl-6,7,8,9-tetradehydrocyclotridecen-1-ylidene)-7,12-dimethyl-8,9,10,11-tetradehydrocyclopentadecene, has been synthesized. Examination of 1H and 13C NMR spectra indicates that the tridecapentadecafulvalene derivative shows no ring current effect but polyolefinic character.
Dehalogenation of α-Halo Carbonyl Compounds by a New Efficient Reagent, Triphenylphosphonium Iodide
Authors: Kamiya Naoshi , Tanmatu Hiroshi , Ishii Yasutaka 
Published: May 2006

Abstract
Triphenylphosphonium iodide, Ph3PHI, was found to be an efficient reagent for the dehalogenation of α-halo carbonyl compounds. α-Halo esters, which were difficult to be reduced with Me3SiCl/Nal reagent, was smoothly debrominated by Ph3PHI. Treatment of α-halocarbonyl compounds with Ph3PDI produced the corresponding α-deuterated compounds.
Stereocontrol in the Michael Reaction of Dimethyl Malonate with Alkyl 2-(1-Hydroxyalkyl)propenoates
Authors: Lawrence Ronnie M , Perlmutter Patrick 
Published: May 2006

Abstract
In this paper we show that the stabilized carbanion dimethyl malonate adds to alkyl 2-(1-hydroxyalkyl)propenoates under basic conditions. Side reactions, such as lactonization or elimination, may be reduced and/or completely avoided by the use of phase transfer catalysis. The high stereoselectivity associated with the additions discussed here was found to be under thermodynamic control.
Emissive Triplex Formation in a Methylene-Bridged A-D-D′ System. Intramolecular Long-Range Electron Transfer
Authors: Masaki Yasuhiro , Uehara Yoshikazu , Yanagida Shozo , Pac Chyongjin 
Published: May 2006

Abstract
Methylene-bridged trichromophoric A-D-D′ reveals only triplex emission at longer wavelength than bichromophoric A-D′ and A-D, providing a model for long-range emissive and nonemissive electron transfer between A and D′ through π spacer D.
Participation of a Chain Mechanism in Efficient Monomerization of Dimethylthymine Cyclobutane Dimer Photosensitized by a Flavin in the Presence of Perchloric Acid
Authors: Masaki Yasuhiro , Miyake Kunihito , Yanagida Shozo , Pac Chyongjin 
Published: May 2006

Abstract
The monomerization of cis-cisoid cyclobutane dimer of 1,3-dimethylthymine is photosensitized by riboflavin tetraacetate with quantum yields of larger than unity in Ar-purged solution in the presence of perchloric acid, whereas the limiting quantum yields for degassed and aerated solutions are unity.
NO2 Sensitive Ga-doped ZnO Thin Film
Authors: Matsushima Shigenori , Ikeda Daisuke , Kobayashi Kenkichiro , Okada Genji 
Published: May 2006

Abstract
The resistivity of a Ga-doped ZnO film in a NO2 atmosphere remarkably increases with decreasing the thickness of the film while that in air remains unchanged. A Ga-doped ZnO film with 75 nm in thickness shows high sensitivity and rapid response to NO2 at 400 °C.
Emission Spectra of p-Xylene Excited by Ar+ Ion Beam
Authors: Fukuzumi Takahiro , Miyachi Shigeki , Nakashima Keiji , Ogawa Teiichiro 
Published: May 2006

Abstract
Emission spectra of p-xylene were measured under ion-impact excitation. There were a weak band of the S1-S0 transition of p-xylene itself and several intense bands of excited fragment species. The spectra were similar to those excited by electron impact, but the band intensity of the parent molecule was much weaker under ion-impact excitation.
The Synthesis and Properties of Cyclopent[a]azulen-3(H)-one
Authors: Kitamori Yoichiro , Yasunami Masafumi , Hioki Takanori , Takase Kahei 
Published: May 2006

Abstract
A new tricyclic π-conjugated system, cyclopent[a]azulen-3(H)-one, was prepared by flash vacuum pyrolysis on the final step. All proton signals of this molecule were observed at higher magnetic resonance field than expected in terms of induced paramagnetic ring current in the periphery of this molecule.
A Novel Rearrangement of 1-Alkynylcyclopropanol to 2-Cyclopenten-1-one via Dicobalt Hexacarbonyl Complex
Authors: Iwasawa Nobuharu 
Published: May 2006

Abstract
Various 1-alkynylcyclopropanols are found to be converted to 3-substituted 2-cyclopenten-1-ones in good yields by heating their dicobalt hexacarbonyl complexes in refluxing tetrahydrofuran or dimethoxyethane.
Chiral 2-Methyl-2-phenyl-1,3-oxazine-4,6-diones. Novel Building Blocks for the Synthesis of Enantiomerically Pure Compounds
Authors: Sato Masayuki , Kitazawa Noritaka , Nagashima Shinya , Kano Kazuya , Kaneko Chikara 
Published: May 2006

Abstract
Synthesis and optical resolution of (Z)-5-benzylidene as well as 5-alkyl derivatives of the title compounds have been accomplished. The Diels-Alder reaction of the former with ketene diethylacetal and base-mediated methylation of the latters were found to proceed preferencially from the same side of 2-methyl group of the oxazinedione rings. The reason for this selectivity is proposed.
Facile Synthesis of Organic Thiocyanates from Organozinc(II) Thiocyanates and N-Chlorosuccinimide
Authors: Takagi Kentaro , Takachi Hideaki , Hayama Naomi 
Published: May 2006

Abstract
The reaction of organozinc(II) compounds, generated in situ from organolithiums and zinc(II) thiocyaniate, with N-chlorosuccinimide (NCS) afforded the corresponding organic thiocyanates in good yields.
Siloxycarbenium Tetrakis[3,5-bis(trifluoromethyl)phenyl]borates and Their Role in Reactions of Ketones with Nucleophiles
Authors: Kira Mitsuo , Hino Takakazu , Sakurai Hideki 
Published: May 2006

Abstract
The intermediacy of trialkylsiloxycarbenium ions was demonstrated by NMR spectroscopy during the reduction of ketones with hydrosilanes catalyzed by trityl tetrakis[3,5-bis(trifluoromethyl)phenyl]borate. It is suggested that the non-nucleophilic nature of the counter anion plays an important part in the modification of the reaction courses.
New Optically Active 4,4-Dialkyl-γ-lactones as Chiral Dopants for Ferroelectric Liquid Crystals
Authors: Ikemoto Tetsuya , Sakashita Keiichi , Kageyama Yoshitaka , Terada Fumiko , Nakaoka Yuriko , Ichimura Kiyoshi , Mori Kenji 
Published: May 2006

Abstract
(S)-2-(4′-n-Decyloxybiphenyl-4-carboxy)-4,4-dialkyl-γ-butyrolactones were synthesized and shown to be good chiral dopants for ferroelectric liquid crystals.
Transition Metal-Catalyzed N-Alkylation of NH Groups of Azoles with Alcohols
Authors: Tanaka Norio , Hatanaka Masataka , Watanabe Yoshihisa 
Published: May 2006

Abstract
Azoles containing acidic NH-group react with various alcohols in the presence of catalytic amount of ruthenium-, rhodium-, and iridium- trialkylphosphite complexes to give the corresponding N-alkylated azoles in good to excellent yields.
Anodic Oxidation of 1,3-Cyclohexanedione to 1,2,3-Cyclohexanetrione
Authors: Wermeckes Bernd , Ye Siyu , Beck Fritz 
Published: May 2006

Abstract
1,3-cyclohexanedione can be electrochemically oxidized in aqueous sulfuric acid at platinum to the 1,2,3-cyclohexanetrione. Yields of about 76% and current efficiencies up to 54% were found.
New Liquid Crystalline Compounds Based on Thiophene
Authors: Brettle Roger , Dunmur David A , Marson Charles M , Piñol Milagros , Toriyama Kazuhisa 
Published: May 2006

Abstract
A homologous series of 2-alkyl-5-(4′-cyanophenyl)thiophenes has been prepared and shown to have improved properties for use in liquid crystal displays. The thiophene ring is prepared from a 1-(4′-bromophenyl)-1,4-dioxoalkane, constructed using the Stetter procedure, by the action of Lawesson’s reagent, and the cyano-group is finally introduced using a copper(I)-mediated exchange reaction.
Enhancement of Hg(3P1)-Photosensitized Luminescence of Amines on Addition of Ethanol
Authors: Yamamoto Shunzo , Nagaoka Toshiro , Sueishi Yoshimi , Nishimura Norio 
Published: May 2006

Abstract
The Hg(3P1)-photosensitized luminescence of amine(AM)-ethanol(AL) mixtures was studied under the condition of steady illumination. The intensity of luminescence from an HgAL* complex decreased with increasing amine pressure, while the emission intensity from an HgAM* complex increased on addition of AL. We propose that the ligand exchange reaction, HgAL* + AM → HgAM* + AL, is involved in this system.
Gold-Loaded Tungsten Oxide Sensor for Detection of Ammonia in Air
Authors: Maekawa Tomoki , Tamaki Jun , Miura Norio , Yamazoe Noboru 
Published: May 2006

Abstract
Among various noble-metal loaded WO3 sensor elements, the one loaded with Au showed the best NH3 sensing performance in sensitivity and response rate at 450 °C. It could detect NH3 in air over a wide concentration range from 5 ppb to 50 ppm. The optimum Au loading was 0.8 wt%.
Preparation and Properties of Poly(methylpyridine-2,5-diyl)s
Authors: Maruyama Tsukasa , Zhou Zhen-hua , Kubota Kenji , Yamamoto Takakazu 
Published: May 2006

Abstract
A series of poly(methylpyridine-2,5-diyl)s were synthesized by dehalogenation polycondensation of the corresponding 2,5-dibromo-methylpyridine with zerovalent nickel complexes. The polymers had molecular weight much higher than that of poly(pyridine-2,5-diyl). Poly(methylpyridine-2,5-diyl)s were converted into semiconducting material by chemical and electrochemical reduction (n-type doping).
Deep Hydrodesulfurization of Alkyl-Substituted Dibenzothiophenes in Light Oil
Authors: Ishihara Atsushi , Tajima Haruhiko , Kabe Toshiaki 
Published: May 2006

Abstract
Hydrodesulfurization of polyaromatic sulfur-containing compounds in light oil was carried out by using Co-Mo/Al2O3 under experimental conditions representative of industrial practice. Alkyl-substituted dibenzothiophenes in light oil, especially 4,6-dimethyldibenzothiophene, were difficult to desulfurize even under deep desulfurization conditions.
Boron Trifluoride Etherate Mediated 1,4-Addition of (1-Alkynyl)diisopropoxyboranes to α,β-Unsaturated Ketones. A Convenient New Route to 3-Alkynyl Ketone Synthesis
Authors: Fujishima Hiroaki , Takada Ei-ichi , Kara Shoji , Suzuki Akira 
Published: May 2006

Abstract
In the presence of BF3 etherate, (1-alkynyl)diisopropoxyboranes react with α,β-unsaturated ketones to give 1,4-addition products selectively in good yields.