bluuebunny/crossref_metadata_2025_split huggingface dataset:
An Efficient and Extremely Mild Catalyst System, Combined Use of Trityl Chloride and Tin(II) Chloride, in the Aldol and Michael Reactions
Authors: Mukaiyama Teruaki , Kobayashi Shu , Tamura Masanori , Sagawa Yukihiro 
Published: July 2006

Abstract
The aldol reaction of silyl enol ethers with acetals or aldehydes, and the Michael reaction of silyl enol ethers with α,β-unsaturated ketones are efficiently catalyzed by the combined use of trityl chloride and tin(II) chloride under extremely mild conditions.
Syntheses of 1,3- and 1,4-Dienes by the Oxidative Coupling of 1-Alkenylstannanes and 2-Alkenylstannanes in the Presence of Palladium Catalyst
Authors: Kanemoto Shigekazu , Matsubara Seijiro , Oshima Koichiro , Utimoto Kiitiro , Nozaki Hitosi 
Published: July 2006

Abstract
Treatment of 1-alkenylstannanes with tBuOOH in the presence of palladium catalyst gives 1,3-dienes. Cross coupling reaction between 1-alkenylstannanes and 2-alkenylstannanes provides 1,4-dienes selectively in good yields.
The Reaction of Samarium(III) Iodide with Samarium Metal in Tetrahydrofuran, A New Method for the Preparation of Samarium(II) Iodide
Authors: Imamoto Tsuneo , Ono Mitsumasa 
Published: July 2006

Abstract
Samarium(III) iodide reacts with samarium metal in tetrahydrofuran under mild conditions to afford samarium(II) iodide in almost quantitative yield. A solution of samarium(II) iodide in tetrahydrofuran is prepared from samarium metal and iodine.
Crystal Structure of Cholesteryl Perfluoropropionate at 173 K
Authors: Tamura Hatsue , Sato Tomohiro , Ogawa Kazuhide , Yano Shinichi , Sakaguchi Kenichi , Matsuura Yoshiki 
Published: July 2006

Abstract
The molecular structure of cholesteryl perfluoropropionate(CPFP) was determined by X-ray analysis. The side chain at C(17) has an extended conformation, while the perfluoropropionate chain at C(3) is disordered in a bent conformation. The molecules, the best planes through the tetracyclic ring-system of which are nearly parallel to the ac plane, form a layered structure.
Isolation, Structural Elucidation, and Total Synthesis of Epiisocitreoviridinol
Authors: Nishiyama Shigeru , Shizuri Yoshikazu , Toshima Hiroaki , Ozaki Masami , Yamamura Shosuke , Kawai Kazuaki , Kawai Noriaki , Furukawa Hideyuki 
Published: July 2006

Abstract
Epiisocitreoviridinol, biogenetically relevant to citreoviridinol, has been isolated as a new metabolite of Penicillium citreo-viride B. (IFO 6049). Its stereostructure including the absolute configuration has been determined unambiguously by its total synthesis in optically active form.
A New Synthesis of Optically Active trans β-Amino Alcohols by Asymmetric Ring-opening of Symmetrical Oxiranes
Authors: Yamashita Hiroyuki 
Published: July 2006

Abstract
The asymmetric ring-opening of symmetrical oxiranes with aniline or trimethylsilyl azide is effectively catalyzed by zinc (2R,3R)-tartrate or cupric (2R,3R)-tartrate to give trans N-phenyl (β-amino alcohol or trans O-trimethylsilyl 2-azido alcohols in 17–52% ee. The latter azido products can be easily converted into optically active trans β-amino alcohols by two-step procedure.
Molecular Structure of a New Multi-Sulfur π-Donor Molecule, Bis(vinylenedithio)tetrathiafulvalene, VT and Crystal and Electronic Structures of VT2PF6
Authors: Kobayashi Hayao , Kobayashi Akiko , Nakamura Tadashi , Nogami Takashi , Shirota Yasuhiko 
Published: July 2006

Abstract
Multi-sulfur π-donor molecule, bis(vinylenedithio)tetrathiafulvalene, VT, is non-planar. Examination of crystal and electronic band structures revealed the one-dimensional nature of VT2PF6.
Condensation of 1-Fluorofuranoses and Silylated Nucleobases Catalyzed by Tetrafluorosilane
Authors: Noyori Ryoji , Hayashi Masahiko 
Published: July 2006

Abstract
The title reaction provides a generally useful tool for nucleoside synthesis. The stereoselectivities are highly influenced by the fluoride substrates, and steric course of the reaction of O-benzylated ribofuranosyl fluoride is solvent dependent.
Effect of H2S on Hydrogenation Activity of Sulfided Co/Mo/Al2O3
Authors: Yamada Muneyoshi , Saito Atsushi , Wakatsuki Toshitaka , Obara Toshiyuki 
Published: July 2006

Abstract
Effect of gas-phase H2S on the reactions of aromatic hydrocarbons over sulfided Co/Mo/Al2O3 was studied at 400 °C. The added H2S inhibited hydrogenation of benzene but accelerated hydrogenation of o-xylene. No effect was exerted upon hydrogenation of toluene. At all instances, the added H2S accelerated skeletal isomerization.
Carbon Monoxide Hydrogenation on SiO2−, Al2O3−, or TiO2-Attached Nb-Monomer Catalysts
Authors: Nishimura Madoka , Asakura Kiyotaka , Iwasawa Yasuhiro 
Published: July 2006

Abstract
The new low-valent Nb monomer catalysts which were prepared by taking advantage of the reaction between Nb(η3-C3H5)4 and surface OH groups on SiO2, Al2O3, or TiO2, followed by the treatments with H2, were found to be active for the hydrogenation of carbon monoxide in which C2–C4 hydrocarbons were mainly produced in the temperature range 423–598 K. In contrast, only the disproportionation reaction of CO to form CO2 proceeded on usual impregnation Nb catalysts and Nb2O5.
Strong Binding Ability of Lipophilic Cyclodextrins for Alkali Metal and Alkaline Earth Metal Ions
Authors: Ueno Akihiko , Sasaki Hiroshi , Fukushima Mitsuru , Minato Shingo , Osa Tetsuo 
Published: July 2006

Abstract
Lipophilic cyclodextrins bearing seven 2-naphthalenesulfonyl moieties at primary (C6) side of β-cyclodextrin exhibited marked binding ability for alkali metal and alkaline earth metal ions in dichloromethane.
Chemical Reactions in the Medium Density Fluid. Anomaly in the Volume Profile of the Dimerization Reaction of 2-Methyl-2-nitrosopropane in Carbon Dioxide
Authors: Kimura Yoshifumi , Yoshimura Yosuke , Nakahara Masaru 
Published: July 2006

Abstract
Pressure effects on the dimerization-dissociation reaction of 2-methyl-2-nitrosopropane in carbon dioxide were studied in the wide range of density. The volume profile of the reaction exhibited a remarkable difference between in the high and the medium density regions.
Bromination of Phenols by Use of Benzyltrimethylammonium Tribromide
Authors: Kajigaeshi Shoji , Kakinami Takaaki , Tokiyama Hajime , Hirakawa Takahiro , Okamoto Tsuyoshi 
Published: July 2006

Abstract
The reaction of phenols with benzyltrimethylammonium tribromide in dichloromethane-methanol for 1 h at room temperature gave polybromophenols in good yields.
Carbon-14 Kinetic Isotope Effect in Reduction of Benzophenone with Lithium Isopropoxide
Authors: Yamataka Hiroshi , Hanafusa Terukiyo 
Published: July 2006

Abstract
The carbon-14 kinetic isotope effect (KIE) was determined for the reduction of benzophenone-carbonyl-14C with lithium isopropoxide in THF at 25 °C. The observed KIE (12k⁄14k=1.045) suggested that there is considerable bonding change at the carbonyl carbon in the transition state. This is the first example of carbon KIE in a reaction which proceeds via initial electron transfer followed by a slow radical process.
Charge Transfer Interaction in Homomolecular Crystals of Azacycl[3.3.3]azine Derivatives
Authors: Akhtar Shamim , Tanaka Jiro , Ashwell Geoffrey J , Shaw John T 
Published: July 2006

Abstract
The electronic spectra and structure of the single crystals of azacycl[3.3.3]azine derivatives have been investigated by the reflection and absorption measurements. In addition to the π-π* transitions of in-plane polarization, the out of plane polarized transition have been found which are due to the intermolecular charge transfer transition between the stacked molecules of the same species.
New Kinetic Evidence for Inversional Mechanism in Thermal Geometrical Isomerization about Carbon–Nitrogen Double Bond
Authors: Asano Tsutomu , Okada Toshio 
Published: July 2006

Abstract
Kinetic pressure and solvent effects were studied for geometrical isomerization about carbon-nitrogen double bond in N,N-dimethyl-N′-[(4-nitrophenyl)methylene]-1,4-benzenediamine and 4-[[4-(dimethylamino)phenyl]imino]-2,4-dihydro-5-methyl-2-phenyl-3H-pyrazol-3-one. In both of the compounds, the effects clearly demonstrate that the polarity of the reactant decreases slightly during activation, and the results can hardly be reconciled with the previously proposed rotational mechanism.
Halogenolysis of Benzylcobaloximes
Authors: Gupta B D , Kumar Manoj 
Published: July 2006

Abstract
The reaction of substituted benzylcobaloximes p-RC6H4CH2Co(dmgH)2Py (R = OMe, NHCOCH3 and NMe2) and m-RC6H4CH2Co(dmgH)2Py (R = Me, OMe) with halogens (Cl2 and Br2) in chloroform under nitrogen forms ring substituted organic and organometallic products.
Organoborane-Catalyzed anti-Markownikoff Hydration of Olefins
Authors: Maruoka Keiji , Sano Hiromi , Shinoda Kiyotaka , Yamamoto Hisashi 
Published: July 2006

Abstract
A new, catalytic procedure for the anti-Markownikoff hydration of olefins in the presence of organoborane catalyst and dichloroaluminum hydride under dry air has been described.
A Significant Substituent Effect on the Stereochemistry of the Trityl Salt-Catalyzed Michael Reaction
Authors: Mukaiyama Teruaki , Tamura Masanori , Kobayashi Shu 
Published: July 2006

Abstract
In the presence of a catalytic amount of trityl salts, silyl enol ethers of thioesters react with α-substituted α,β-unsaturated cyclic ketones to afford the corresponding Michael adducts in good yields with excellent lk diastereoselectivities.
Efficient Solar to Chemical Conversion with an n-Type Amorphous Silicon/p-Type Crystalline Silicon Heterojunction Electrode
Authors: Ueda Keiichi , Nakato Yoshihiro , Sakamoto Hiromi , Sakai Yuichi , Matsumura Michio , Tsubomura Hiroshi 
Published: July 2006

Abstract
An n-p heterojunction silicon (Si) electrode was prepared by depositing an n-type amorphous Si layer on a p-type crystalline Si wafer by the plasma CVD method. It worked as an efficient hydrogen evolving photocathode when coated with a thin platinum layer as a catalyst. A photoelectrochemical cell was constructed with an electrode of this type and a platinum counter electrode separated by a cation exchange membrane. It decomposed hydrogen iodide into hydrogen and iodine with the conversion efficiency of 10.8% (AM1, 100 mW/cm2), the highest of the efficiencies so far reported for the solar-to-chemical conversion without an external bias.
Synthesis of N,N′-Disalicylidene-ethylenediamine(Salen)-Porphyrin Combined System with Constrained Conformations
Authors: Maruyama Kazuhiro , Kobayashi Fumikazu , Osuka Atsuhiro 
Published: July 2006

Abstract
Salen-capped porphyrin and salen-bridged porphyrin dimer as well as their zinc and nickel complexes were synthesized. In the capped complex, the nickel-salen moiety was rigidly held over the porphyrin ring, while preferred conformations of salen-bridged porphyrin dimers were controlled by the metal complexation.
Asymmetric Epoxidation of Homoallylic Alcohols Using Zirconium Tetrapropoxide, Dicyclohexyltartramide, and t-Butyl Hydroperoxide System
Authors: Ikegami Satoru , Katsuki Tsutomu , Yamaguchi Masaru 
Published: July 2006

Abstract
In the asymmetric epoxidation of homoallylic alcohols, a combination of zirconium tetrapropoxide, dicyclohexyltartramide, and t-butyl hydroperoxide was found to give good enantiomeric selectivities (up to 77% ee) especially for (Z)-homoallylic substrates.
Palladium(0)-catalyzed Synthesis of 2-Alkylbenzothiazoles by a Novel Thiation of 1-Amino-2-iodoarenes with Thioamides
Authors: Takagi Kentaro , Iwachido Tadashi , Hayama Naomi 
Published: July 2006

Abstract
Pd(0) catalyzed the reaction of 1-amino-2-iodoarenes with thioamides giving rise to 2-XCH2-substituted benzothiazoles (X=H, CH3, OCH3, and CN) directly.
Highly Effective Catalytic Asymmetric Hydrogenations of α-Keto Esters and an α-Keto Acetal with New Neutral Chiral Pyrrolidinebisphosphine-Rhodium Complexes
Authors: Takahashi Hisashi , Morimoto Toshiaki , Achiwa Kazuo 
Published: July 2006

Abstract
Synthesis of new chiral pyrrolidinebisphosphine–rhodium complexes and their application to the asymmetric hydrogenations of α-keto esters and an α-keto acetal are described. Among them, MCCPM-Rh gave the highest optical yield (87%) of the α-hydroxy ester and MCPM-Rh gave the 75% optical yield of the α-hydroxy acetal at the substrate to catalyst ratio (1000:1).
Variable Pressure and Temperature Nuclear Magnetic Resonance Study of Solvent Exchange on Manganese(II) Ion in N,N-Dimethylformamide. Influence of Solvent Molecular Size on Solvent Exchange Mechanism
Authors: Ishii Masao , Funahashi Shigenobu , Tanaka Motoharu 
Published: July 2006

Abstract
The solvent exchange rates for manganese(II) ion in DMF have been measured at various pressures up to 300 MPa by the high-pressure oxygen-17 NMR line-broadening method. The activation volume of 1.6±0.5 cm3 mol−1 points to an interchange mechanism operative in the exchange process. This is discussed in terms of the bulkiness of DMF.
Novel Cyclization of Vinyl Nitrene into 1-Azaphenalene
Authors: Isomura Kazuaki , Sakurai Makoto , Komura Toshio , Saruwatari Masumi , Taniguchi Hiroshi 
Published: July 2006

Abstract
Thermal reaction of 2H-azirines, bearing a methoxy or methylthio group at the neighboring position to azirine ring, was studied. In thermolysis of ethyl 2-(2-methoxynaphth-1-yl)-2H-azirine-3-carboxylate, attack of the vinyl nitrene at the peri position to form a 1-azaphenalene ring was observed. In thermal reaction of its thio analogue, 1-azaphenalene was also formed, but a naphthothiazine formed by the attack of vinyl nitrene at the sulfur atom was the major product. Mechanisms and differences of the reactions depending on O and S are discussed.
Synthesis of α-Arylated Phenylsulfonylacetonitriles. A Useful Precursor for Substituted α-Arylalkanoic Acid and Their Derivatives
Authors: Suzuki Hitomi , Yi Qui , Inoue Junko , Kusume Kumiko , Ogawa Takuji 
Published: July 2006

Abstract
Copper(I) iodide-catalyzed reaction of aryl iodides with anion derived from phenylsulfonylacetonitrile in hot hexamethylphosphoric triamide affords α-arylated nitriles in good to moderate yields. Further alkylation of these nitriles followed by reductive removal of sulfonyl group provides a simple route to α-arylalkanenitriles.
Stereoselectivity in Oxidative and Reductive Transformations of p-Menthane Derivatives with the Cultured Cells of Nicotiana tabacum
Authors: Suga Takayuki , Hamada Hiroki , Hirata Toshifumi , Izumi Shunsuke 
Published: July 2006

Abstract
The biotransformation of the enantiomeric pairs of 2- and 3-oxygenated p-menthane derivatives with the cultured cells of Nicotiana tabacum was investigated. It was found that (i) the cultured cells transform only 2-oxygenated p-menthane derivatives to a great extent, (ii) the cultured cells cause the highly stereospecific reduction for (1R,4R)-2-oxo-p-menthane, whereas this is not the case for its enantiomer, and (iii) the cultured cells enantioselectively oxidize the hydroxyl group of 2-hydroxy-p-menthanes.
Amplified Image Recording in Liquid Crystal Media by Means of Photochemically Triggered Phase Transition
Authors: Tazuke Shigeo , Kurihara Seiji , Ikeda Tomiki 
Published: July 2006

Abstract
Over 100 times amplified image recording was achieved by means of reading out nematic isotropic phase transition of liquid crystal induced by partial trans→cis photoisomerization of a small amount(up to 5 mol%) of 4-butyl-4′-methoxyazobenzene mixed with 4-cyano-4′-n-pentylbiphenyl.
A New Method of Formation of 9-Azabicyclo[4.2.1]nonane Skeleton and Its Application to Synthesis of (±)-Anatoxin a
Authors: Shono Tatsuya , Matsumura Yoshihiro , Uchida Kenshi , Tagami Katsumi 
Published: July 2006

Abstract
9-Azabicyclo[4.2.1]nonane skeleton was formed in one step by Lewis acid promoted reaction between 1-methoxycarbony1-2,5-dimethoxypyrrolidine and 1-ethoxy-1-trimethylsiloxy-1,4-pentadiene, and it was converted to (±)-anatoxin a.
Structural and Electrical Properties of (BEDT-TTF)3CuBr3
Authors: Mori Takehiko , Sakai Fumiko , Saito Gunzi , Inokuchi Hiroo 
Published: July 2006

Abstract
An organic conductor (BEDT-TTF)3CuBr3 (BEDT-TTF: bis(ethylenedithio)tetrathiafulvalene) crystallizes in the monoclinic space group P21/c, a = 16.937(3), b = 10.123(1), c = 14.178(4) Å, β=102.59(2)°, V = 2372.2(9) Å3, and Z = 2. The donors form a two-dimensional network, in which a charge separation takes place as (D3⁄4+D3⁄4+D0)2CuBr2−CuBr42−. The resistivity at room temperature is 0.6 Ωcm and semiconductive.
A Facile Synthesis of γ-Alkylidene-α,β-unsaturated γ-Lactones
Authors: Tsuboi Sadao , Wada Hiroshi , Mimura Shigetoshi , Takeda Akira 
Published: July 2006

Abstract
Treatment of β-allenic acid with KI3 gave directly γ-alkylidene-α,β-unsaturated γ-lactones in moderate yields.
A Convenient Preparation of α-Oxo Ketene Dithioacetals
Authors: Nakayama Juzo , Sugie Yasuko , Hoshino Masamatsu 
Published: July 2006

Abstract
The reaction of a series of ketones with 2 equiv. of 1,3-benzodithiolylium tetraf luoroborate affords α- (1, 3-benzodithiol-2-ylidene)ketones and 1,3-benzodithiole in good yields.
High Pressure Reaction of 1-Methoxy-3-trialkylsiloxybuta-1,3-diene with Aldehydes. [4 + 2] Cycloaddition or Silicon Migration Reaction
Authors: Yamamoto Yoshinori 
Published: July 2006

Abstract
The high pressure reaction of Danishefsky’s diene with aromatic aldehydes produces the [4 + 2] cycloadduct, while with an aliphatic aldehyde such as 2-phenylpropionaldehyde the intermolecular silicon migration from oxygen to oxygen takes place.
Electrochemical Determination of Electroinactive Medicines with Nafion-Coated Electrodes
Authors: Matsue Tomokazu , Aoki Atsushi , Uchida Isamu , Osa Testuo 
Published: July 2006

Abstract
Amperometic determination of electroinactive medicines (acetylcholine, hexamethonium, neostigmine, quinidine and nicotine) based on partition effect has been successfully performed with a Nafion-coated electrode.
Copper(II) Catalyzed Cyclization of Azidoalkadienylquinones. Stereoselective Formation of Dihydropyrroloindoloquinones and the Related Quinolinoquinone
Authors: Maruyama Kazuhiro , Nagai Naoshi , Naruta Yoshinori 
Published: July 2006

Abstract
Copper (II) salt catalyzed reaction of 2-azido-1,4-quinones with a conjugated alkadienyl side chain stereoselectively gave dihydropyrroloindoloquinones or dihydropyrroloquinolinoquinones, both of which are hardly obtained by uncatalyzed pyrolyses or photochemical reactions.
Asymmetric Reduction of α-Methylene Ketones by Using Fermenting Baker’s Yeast. Preparation of Optically Active β-Hydroxy α-Methyl Ketones
Authors: Utaka Masanori , Onoue Shinji , Takeda Akira 
Published: July 2006

Abstract
Asymmetric reduction of 4-hydroxy-3-methylenealkan-2-ones with baker’s yeast afforded (3R,4S)-4-hydroxy-3-methylalkan-2-ones in &gt;98% ee and the (3R,4R) isomers in 67→98% ee in ratios of 1:1–2.
Synthesis of the Solid Superacid of SO42−/SnO2 with Acid Strength of Ho≤−16.04
Authors: Matsuhashi Hiromi , Hino Makoto , Arata Kazushi 
Published: July 2006

Abstract
A solid superacid catalyst with an acid strength of Ho≤−16.04 was synthesized from tin hydroxide, which was obtained from the solution with pH=10, by exposing to 3 mol·1−1 H2SO4 followed by calcination in air at 823 K; the catalyst was active for the skeletal isomerization of butane to isobutane at room temperature.
Electron Transfer Reaction between Fe4S4 Cluster and Methyl Viologen
Authors: Kitajima Nobumasa , Noda Sumio , Aono Shigetoshi , Okura Ichiro , MORO-OKA Yoshihiko 
Published: July 2006

Abstract
The reduction of Fe4S42+ to Fe4S41+ with the reduced form of methyl viologen, was found to proceed with the synthetic clusters ligated with pentafluorobenzenethiolate.
Organized Photodimerization of Cinnamic Acid in Cationic Reversed Micelle
Authors: Takagi Katsuhiko , Fukaya Haruhiko , Miyake Nobuhisa , Sawaki Yasuhiko 
Published: July 2006

Abstract
Laurylamine cinnamate salt (1), a reversed micelle-forming surfactant, undergoes a regioselective photodimerization to give syn-and anti-head-to-head dimers, the former being predominant. The rate of dimer formation shows a discontinuous point at the cmc of 1 (i.e., 3–5 mM), which is in parallel with the change in the relative emissive intensities of the monomer and the excimer.
Valence State of Copper Atoms and Transport Property of an Organic Superconductor, (BEDT-TTF)2Cu(NCS)2, Measured by ESCA, ESR, and Thermoelectric Power
Authors: Urayama Hatsumi , Yamochi Hideki , Saito Gunzi , Sugano Tadashi , Kinoshita Minoru , Inabe Tamotsu , Mori Takehiko , Maruyama Yusei , Inokuchi Hiroo 
Published: July 2006

Abstract
ESCA, ESR, and thermopower were measured in crystals of an organic superconductor, (BEDT-TTF)2Cu(NCS)2 (Tc=10.4 K), to examine a valence state of Cu and a transport property. The Cu state was confirmed at 298 K by ESCA. ESR indicates a broad Lorentzian signal of a BEDT-TTF cation radical and no Cu signal at 298–4 K. The thermopower is anisotropic in the two-dimensional bc plane, which is originated from the anisotropy of the band structure.
Crystal Structure of 2,5-Bis(dicyanomethylene)-2,5-dihydrothieno[3,2-b]thiophene and Bis(ethylenedithio)tetrathiafulvalene Complex
Authors: Aso Yoshio , Yui Koji , Ishida Hideki , Otsubo Tetsuo , Ogura Fumio , Kawamoto Atsushi , Tanaka Jiro 
Published: July 2006

Abstract
The crystal structure of 2,5-bis(dicyanomethylene)-2,5-dihydrothienot [3,2-b]thiophene and bis(ethylenedithio) tetrathiafulvalene complex showed a weak face to face interaction and sheet-like networks with intermolecular N···S and S···S interactions, and the shortest S···S contact is 3.48 Å between the acceptors.
The Addition Reaction of Acetals to Activated Olefins under Extremely Mild Conditions
Authors: Mukaiyama Teruaki , Wariishi Koji , Saito Yoshikazu , Hayashi Masaji , Kobayashi Shu 
Published: July 2006

Abstract
In the presence of catalytic amounts of trimethylsilyl chloride and tin(II) chloride, or trityl chloride and tin(II) triflate, activated olefins smoothly react with acetals to afford the corresponding adducts in good yields.
1-Benzyl-2,6-dicyanopiperidines as a New Class of Annelating Reagents. Use for Preparation of Fused Polycyclic Compounds
Authors: Takahashi Kazumasa , Asakawa Mikio , Ogura Katsuyuki 
Published: July 2006

Abstract
The utility of 1-benzyl-2,6-dialkyl-2,6-dicyanopiperidines as an annelating reagent, i.e. latent 1,5-diketones, is demonstrated in synthesis of multi-fused compounds.
Direct Optical Resolution of Carboxylic Acids by Chiral HPLC on Tris(3,5-dimethylphenylcarbamate)s of Cellulose and Amylose
Authors: Okamoto Yoshio , Aburatani Ryo , Kaida Yuriko , Hatada Koichi 
Published: July 2006

Abstract
A variety of racemic carboxylic acids have been for the first time directly resolved by normal-phase, high-performance liquid chromatography using a hexane-2-propanol eluting system containing a small amount (≈1%) of a strong carboxylic acid, like formic acid, trichloroacetic acid, and trifluoroacetic acid.
Polymerization of Monomers Containing Two Ethynyldimethylsilyl Groups
Authors: Kusumoto Tetsuo , Hiyama Tamejiro 
Published: July 2006

Abstract
Polymerization of (HC≡CSiMe2)2X with WCl6 or MoCl5 catalyst afforded polymers soluble in common organic solvents. The conductivity of the polymer fell in the range of insulators but was improved to 10−2 S·cm−1 upon doping with (Et2N) 3S+ SiF2Me3− (or n-Bu4N+ F−) and I2 (or SO3).
NMR Evidence for Ethyl Cation and Protonated Ethanol in the Pseudoliquid Phase of H3PW12O40
Authors: Lee Kwan Young , Kanda Yuji , Mizuno Noritaka , Okuhara Toshio , Misono Makoto , Nakata Shin-ichi , Asaoka Sachio 
Published: July 2006

Abstract
In the pseudoliquid phase of H3PW12O40, an ethyl cation and two protonated ethanol species (monomer and dimer) have been detected by solid-state MAS NMR of 1H, 13C, and 31P; these species are most probable reaction intermediates of dehydration of ethanol.