bluuebunny/crossref_metadata_2025_split huggingface dataset:
Combined Use of Cation-Masking Agent with Anionic Dispersant for the Preparation of High Performance CWM
Authors: Maeda Shigeru , Ohki Akira , Gonohara Yutaka , Takeshita Toshio 
Published: May 2006

Abstract
By the combined use of cation-masking agent with anionic dispersant, highly-loaded coal water mixture (CWM) was prepared, and the sedimentation stability and rheological property of CWM were much improved as compared with the case of single use of the anionic dispersant.
Hydroxylation of Alkanes Catalyzed by Manganese Tetraphenylporphyrin Immobilized on Imidazole-modified Silica Gel
Authors: Tatsumi Takashi , Nakamura Makoto , Tominaga Hiro-o 
Published: May 2006

Abstract
Immobilization of Mn(TPP)Cl (TPP = tetraphenylporphyrin) onto 3-imidazolylpropyl-modified SiO2 resulted in enhancement of its activity for hydroxylation of cyclohexane; the support prevented the complex from forming a dimer leading to oxidative destruction.
A New Synthetic Route to the Key Precursor of 1β-Methylcarbapenem Antibiotics from (S)-Methyl 3-Hydroxy-2-methylpropanoate
Authors: Shirai Fumiyuki , Nakai Takeshi 
Published: May 2006

Abstract
A new synthetic route to the 1β-methylcarbapenem precursor from (S)-methyl 3-hydroxy-2-methylpropanoate has been developed which involves as a key step the chelation-controlled aldol reaction of (S)-3-benzyloxy-2-methylpropanal with ketene trimethylsilyl acetal of ethyl (trimethylsilyl)acetate.
Formation of 2-Substituted 2-Isoxazolinium Salts by the Reaction of 1,1,2,2-Tetrasubstituted Cyclopropanes with NOBF4
Authors: Ichinose Nobuyuki , Mizuno Kazuhiko , Otsuji Yoshio 
Published: May 2006

Abstract
The reaction of 1,1,2,2-tetraphenyl- and 1-methyl-1,2,2-tri-phenylcyclopropanes with NOBF4, gave 2-phenyl-2-isoxazolinium tetrafluoroborates via the phenyl migration from 3-phenyl-2-isoxazolidinium or 1-isoxazolinium intermediates.
A Novel Spontaneous Alternating Copolymerization of Methoxyallene with 4-Chlorophenyl Isocyanate
Authors: Mizuya Jiro , Yokozawa Tsutomu , Endo Takeshi 
Published: May 2006

Abstract
The spontaneous alternating copolymerization of methoxyallene with 4-chlorophenyl isocyanate proceeded through zwitterion to give polyamide having highly reactive exo-methylene groups bonded onto polymer backbone, accompanying the partial formation of β-lactam derivatives.
Catalytic Asymmetric Synthesis of Optically Active Alkynyl Alcohols
Authors: Soai Kenso , Niwa Seiji 
Published: May 2006

Abstract
Enantioselective additions of dialkylzinc reagents to alkynyl aldehydes using (S)-(+)-diphenyl(1-methylpyrrolidin-2-yl)methanol as a chiral catalyst afford optically active sec-alkynyl alcohols in high enantiomeric excess.
A Conformational Study on Highly Crowded 1,3,5-Tris[bis(trimethylsilyl)methyl]benzene Derivatives
Authors: Okazaki Renji , Unno Masafumi , Inamoto Naoki , Yamamoto Gaku 
Published: May 2006

Abstract
Dynamic NMR and molecular mechanics calculations show that 1-bromo-2,4,6-tris[bis(trimethylsilyl)methyl]benzene exists as a conformer where both o-methine hydrogens are coplanar with the ring and directed toward the bromine. Relevance of this conformation with unique properties of Tb as a steric protection group is also described.
Unusual Long Distances of Germanium–Carbon Bond of Organogermylalkali Metals Probed by EXAFS
Authors: Kugita Tsuyoshi , Mochida Kunio , Tohji Kazuyuki , Udagawa Yasuo 
Published: May 2006

Abstract
Extended X-ray absorption fine structure (EXAFS) spectra were analyzed for a series of organogermylalkali metals in solutions. The germanium–carbon bond lengths of the germylalkali metals were found to be longer as much as 10% than those of the corresponding neutral species.
Novel Method for Oxidation of Secondary Alcohols into Ketones with Molecular Oxygen by Using Cobalt(II) Complex Catalyst
Authors: Yamada Tohru , Mukaiyama Teruaki 
Published: May 2006

Abstract
The oxidation of secondary alcohols into the corresponding ketones using a catalytic amount of cobalt(II) complex under an oxygen atmosphere is described. The effect of additives shows that Molecular Sieves is effective to improve the yield of ketones.
Convenient Syntheses of Thiazoles Incorporated with α-Dehydroamino Acid and Dehydropeptide Structures
Authors: Nakamura Yutaka , Shin Chung-gi , Umemura Kazuyuki , Yoshimura Juji 
Published: May 2006

Abstract
The convenient syntheses of various thiazole α-dehydroamino acids, thiazole valine ethyl ester, and their dehydrodiand tripeptides, which are important moieties and segment of micrococcin P1 and noshiheptide, macrocyclic peptide antibiotics, were first accomplished.
Correlation of Exciplex Formation with Ground State Conformations in β-(1-Pyrenyl)ethyl Benzoates
Authors: Kawakami Jun , Iwamura Michiko , Nakamura Junko 
Published: May 2006

Abstract
β-(1-Pyrenyl)ethyl p-cyanobenzoate (P2CN) which forms an emissive intramolecular exciplex has a “folded” conformation as detected by 1H-NMR NOE. Precise decay lifetime analysis also confirms that the exciplex emission is mainly from that conformer. Exciplex emission was not observed for the p-chlorobenzoate (P2Cl) which did not show NOE.
Photochemistry of Disilanylcyclohexenones. ESR Detection of a Novel Silatrimethylenemethane Intermediate
Authors: Sakamoto Kenkichi , Abe Junji , Sakurai Hideki 
Published: May 2006

Abstract
Irradiation of 2-pentamethyldisilanyl-2-cyclohexenone in a t-butyl alcoholbenzene mixed solvent gave 2-t-butoxydimethylsilyl-3-trimethylsilyloxycyclohexene and 1-trimethylsilyloxy-2-(t-butoxydimethylsilyl)cyclohexene. Silatrimethylenemethane was detected by UV and ESR spectra. Irradiation of 2-pentamethyldisilanyl-3-methyl-2-cyclohexenone afforded 1-trimethylsilyloxy-3-methyl-3-(t-butyldimethylsilyl)hexene through methylenesilacyclopropane.
Asymmetric Structure Determination of Copper Oxide on α-Quartz(0001) Surface by Polarized Total-Reflection Fluorescence Extended X-Ray Absorption Fine Structure Spectroscopy
Authors: Shirai Masayuki , Asakura Kiyotaka , Iwasawa Yasuhiro 
Published: May 2006

Abstract
Cu oxides were supported on α-quartz(0001) by CVD of Cu(DPM)2 (DPM: dipyvaloylmethanate) and the subsequent calcination. The structure of the Cu species in the submonolayer was determined by polarized total-reflection fluorescence extended X-ray absorption fine structure (EXAFS) spectroscopy. Both s- and p-polarized EXAFS data revealed that Cu atoms were dispersed in a monomer form on the three-fold hollow sites of the quartz surface with the Cu-O distance of 0.201 nm.
Stereoselective Glycosylation Reaction Starting from 1-O-Trimethylsilyl Sugars by Using Diphenyltin Sulfide and a Catalytic Amount of Active Acidic Species
Authors: Mukaiyama Teruaki , Matsubara Koki 
Published: May 2006

Abstract
1,2-trans-Ribofuranosides are stereoselectively synthesized from 1-O-trimethylsilyl ribofuranose and trimethylsilyl ethers in the presence of a catalytic amount of Me3SiOTf using Ph2Sn=S as an additive, while 1,2-cis-ribofuranosides and 1,2-cis-glucopyranosides are prepared predominantly in the coexistence of LiClO4 in the above reaction.
Crystal Structure of Buckminsterfullerene (C60) Incorporated by a U-Shaped Twin Donor
Authors: Izuoka Akira , Tachikawa Tatsuya , Sugawara Tadashi , Saito Yahachi , Shinohara Hisanori 
Published: May 2006

Abstract
Buckminsterfullerene (C60) was found to form single crystals of an inclusion complex with a double ethylene-bridged donor, a CT absorption band being observed in its UV spectrum. Crystal structure of the complex is characterized by two one-dimensional arrays of C60’s with van der Waals contacts.
A New Preparative Route to Phosphaethynes from Dichlorophosphaethenes by Lithiation, Photoisomerization, and Re-lithiation Involving Migration
Authors: Yoshifuji Masaaki , Kawanami Hajime , Kawai Yoshinori , Toyota Kozo , Yasunami Masafumi , Niitsu Takashi , Inamoto Naoki 
Published: May 2006

Abstract
2-(2,4,6-Tri-t-butylphenyl)-1-phosphaethyne was prepared from 2,2-dichloro-1-(2,4,6-tri-t-butylphenyl)-1-phosphaethene by lithiation of anti-chloro atom followed by hydrolysis, photoisomerization, and repeated lithiation involving migration. The present method was successfully applied to the preparation of 2-(2,4,6-tri-t-pentylphenyl)-1-phosphaethyne.
Crystal and Molecular Structure of Tetra-palladium Cluster with a C,N,S-Tridentate Ligand
Authors: Kawamoto Tatsuya , Kushi Yoshihiko 
Published: May 2006

Abstract
2-(1-Naphthyl)benzothiazoline, 1-nabz, reacts with palladium(II) acetate to yield, in addition to the expected bis[2-N-(1-naphthylmethylideneamine)benzenethiolato]palladium(II), a minor by-product tetrakis[2-N-(1-naphtylmethylideneamine)benzenethiolato-Co,N,S]tetrapalladium(II) (2) of composition C68H44N4Pd4S4; the novel structure of 2 is established by X-ray diffraction.
Photocontrol of In-plane Alignment of a Nematic Liquid Crystal by a Photochromic Spiropyran Monolayer Absorbing Linearly Polarized Light
Authors: Ichimura Kunihiro , Hayashi Yuko , Ishizuki Norio 
Published: May 2006

Abstract
Azimuthal anisotropy of a nematic liquid crystal alignment was caused by exposing 6-nitrospirobenzopyran monolayer to linearly polarized UV light. The photo-induced in-plane alignment was scarcely altered after prolonged storage at an ambient temperature.
A New Palladium(I) Dinuclear Complex Forming a Coplanar Structure for Two Coordination Planes
Authors: Suzuki Takayoshi , Fujita Junnosuke 
Published: May 2006

Abstract
Dinuclear Pd(I) and Pt(I) complexes bridged by (dimethylphosphinomethyl)dimethylamine (mm-pcn), [M2Cl2{μ-(mm-pcn)}2], were prepared. X-Ray crystal structure analysis revealed that the Pd complex is a head-to-tail isomer in which the two coordination planes around Pd are coplanar.
Carbamate Derivatives of β-Cyclodextrin as Chiral Stationary Phases for Metal Capillary Gas Chromatography
Authors: Takeichi Tsutomu , Shimura Sigeru , Toriyama Hisashi , Takayama Yuzi , Morikawa Masami 
Published: May 2006

Abstract
Three kinds of novel chiral stationary phases for capillary gas chromatography,heptakis(2,6-di-O-pentyl)-β-cyclodextrin hepta(3-n-propyl, 3-isopropyl, and 3-phenylcarbamate), were prepared. Metal capillary columns coated with the stationary phases showed impressive enantioseparation toward many kinds of racemic compounds.
Alkoxymethylthiomethylsilanes as a Synthetic Equivalent of Thiocarbonyl Ylides. Synthesis of 1,3-Oxathiolanes and Tetrahydrothiophenes
Authors: Hojo Makoto , Ohkuma Masakazu , Hosomi Akira 
Published: May 2006

Abstract
Alkoxymethylthiomethylsilanes, easily prepared, react nucleophilically with aldehydes by the action of fluoride ion and electrophilically with silyl enol ethers in the presence of a Lewis acid. These products can be converted to 1,3-oxathiolanes by acid catalysis and tetrahydrothiophenes by fluoride ion-promoted intramolecular alkylthiomethylation, respectively. By both sequential reactions alkoxymethylthiomethylsilanes serve as substituted thiocarbonyl ylide synthons.
Gas Phase Substituent Effect on Basicity of Phenylacetylene. Intrinsic Resonance Demand of Phenylvinyl Cation
Authors: Mishima Masaaki , Ariga Toshifumi , Fujio Mizue , Tsuno Yuho , Kobayashi Shinjiro , Taniguchi Hiroshi 
Published: May 2006

Abstract
The substituent effect on gas-phase basicity of phenylacetylene has been analyzed in terms of the LArSR Eq., providing an r of 1.21 and a ρ of −14.1. The magnitude of the r is reconciled with the “resonance demand - carbocation stability relation” derived from sp2-hybridized benzylic carbocations.
On the Origin of the Distal vs. Proximal Regioselectivity in Di-O-alkylation of Calix[4]arenes
Authors: Araki Koji , Iwamoto Koji , Shigematsu Satoshi , Shinkai Seiji 
Published: May 2006

Abstract
The mechanistic basis of the distal vs. proximal regioselectivity in di-O-alkylation of calix[4]arene was investigated through the detailed product analyses. It was found that (i) the regioselectivity is profoundly affected by the residual intramolecular hydrogen-bonds and (ii) the distal isomer is more reactive for further O-alkylation than the proximal isomer, resulting in the “apparent” proximal selectivity.
Study on the Mechanism of Pd(0) Catalyzed Hydrostannation of Conjugated Dienes by Deuterostannation
Authors: Miyake Hideyoshi , Yamamura Kimiaki 
Published: May 2006

Abstract
The mechanism of Pd(0) catalyzed hydrostannation of conjugated dienes was studied by deuterostannation. In this reaction, η3-allyl complex intermediate plays an important role. This mechanism can explain the reason of the stereoselectivity and the regioselectivity of this reaction.
Synthesis of the Prelog-Djerassi Lactone and Protomycinolide IV Based on the Stereospecific Methylation of γ,δ-Epoxy Acrylates by Trimethylaluminum
Authors: Miyashita Masaaki , Hoshino Masahide , Yoshikoshi Akira , Kawamine Katsumi , Yoshihara Kousei , Irie Hiroshi 
Published: May 2006

Abstract
The Prelog-Djerassi lactone, a key intermediate for the synthesis of several medicinally important macrolide antibiotics, and protomycinolide IV, a 16-membered macrolide, have been synthesized by employing the recently developed stereospecific methylation of γ,δ-epoxy acrylates by trimethylaluminum as key steps.
Reaction of Pentafluoropropionic Anhydride Vapor on Polypeptide as Revealed by Mass Spectrometry. A Carboxypeptidase Mimetic Degradation
Authors: Tsugita Akira , Takamoto Keiji , Satake Kazuo 
Published: May 2006

Abstract
Pentafluoropropionic anhydride vapor at −18 °C degraded a dodecapeptide, AlaArgGlyIleLysGlyIleArgGlyPheSerGly to the peptides which are successively lacking from the C-terminus. The mass spectrum of the reaction mixture for 10 minutes indicated each molecular ions from the intact peptide up to the N-terminal dipeptide clearly, together with two types of successively degraded molecular ions, minus 18 and minus 45 M/Z respectively.
Asymmetric Carbon-Carbon Bond Formations by the Reaction of “Chiral Episulfonium Ions” with Enol Silyl Ethers
Authors: Toshimitsu Akio , Hirosawa Chitaru , Tanimoto Shigeo 
Published: May 2006

Abstract
Carbonyl compounds having asymmetric carbon center at β position and phenylthio group on γ carbon were produced by the reaction of optically active 2-hydroxyalkyl phenyl sulfides with enol silyl ethers in the presence of Lewis acid through “chiral episulfonium ions”.
A New Lactam Protecting Group
Authors: Smith Michael B , Wang Chung-Jen , Keusenkothen Paul F , Dembofsky Bruce T , Fay Joseph G , Zezza Charles A , Kwon Tae Woo , Sheu JennLine , Son Young Chan , Menezes Royce F 
Published: May 2006

Abstract
N-Alkenyl and N-alkoxymethyl lactams are impervious to many reagents and are useful protecting groups for lactams. Conversion to the corresponding 2-ethoxy iminium salt and hydrolysis in neutral water removes the protecting group. Mild basification regenerates the lactam.
Dimer Structures of Bacteriochlorophyll c from Chlorobium tepidum in CDCl3
Authors: Nozawa Tsunenori , Ohtomo Katsunori , Morishita Yumi , Konami Hideo , Madigan Michael T 
Published: May 2006

Abstract
As an aggregate structure in CDCl3 a piggyback type dimer was suggested for bacteriochlorophyll (BChl) c from Chlorobium tepidum on the basis of variations of 1H NMR chemical shifts accompanied with the aggregate formation and of values of calculated ring current shifts.
Self-Assembly of Liquid Crystalline Complexes Having Angular Structures through Intermolecular Hydrogen Bonding
Authors: Kato Takashi , Adachi Hajime , Fujishima Akira , Fréchet Jean M J 
Published: May 2006

Abstract
Novel liquid crystalline materials having angular structures with mesogens pointing in two directions have been prepared by complexation of phthalic or isophthalic acid and two molecules of a stilbazole through intermolecular hydrogen bonding.
Detection of Organic Compounds by Dual Fluorescence of Bis(1-pyrenecarbonyl)-γ-cyclodextrins
Authors: Suzuki Iwao , Ohkubo Masahiro , Ueno Akihiko , Osa Tetsuo 
Published: May 2006

Abstract
The regioisomers of 6A,6X-bis(1-pyrenecarbonyl)-γ-cyclodextrins (1-4) showed dual fluorescence composed of normal and excimer emissions in 30% aqueous DMSO solution. The fluorescence spectra of 1-4 were different from one another and varied upon guest addition in different manners depending on both host and guest. The guest-induced increases or decreases in the excimer emission intensity were used for detecting various organic compounds.
How Do Ethane-Type Molecules Avoid Eclipsing When Forced as Such? The Case of 7,8,9,10-Tetrachloro-1,1-dimethyl-1,2,6,10b-tetrahydro-6,10b-o-benzenoaceanthrylene
Authors: Oki Michinori , Endo Masahiko , Noda Yoshiyuki , Toyota Shinji , Yamasaki Mikio , Shibahara Takashi 
Published: May 2006

Abstract
The molecular structure of the title compound was determined by X-ray crystallography. To avoid the eclipsing interactions between the two methyl groups at the 1-position and the triptycene skeleton, the molecule exhibited several unusual bond lengths and bond angles. The benzene rings in the molecule were also deformed from planarity.
ESR Spectra of VO2+ and Mn2+ in Aqueous Solution at L-Band
Authors: Utsumi Hideo , Tatebe Takuji , Hamada Akira 
Published: May 2006

Abstract
L-Band (1.2 GHz) electron spin resonance (ESR) spectra of aqueous solution of vanadyl and manganese sulfate are reported with a comparison to those at X-band (9.4 GHz). ESR spectra of 0.5 mol dm−3 VO2+ and Mn2+ aqueous solution consisted of 3 and 2 resonance lines at L-band, respectively, while those gave 8 and 6 lines at X-band, respectively. The origin of the characteristic ESR spectra will be discussed in terms of frequency dependence of hyperfine coupling constant and line-broadening.
Third-Order Nonlinear Optical Susceptibilities of Solutions of Some Mesogenic Metallotetraphenylporphyrins by Nanosecond Degenerate Four-Wave Mixing Method
Authors: Sakaguchi Toru , Shimizu Yo , Miya Masaru , Fukumi Toshio , Ohta Koji , Nagata Akira 
Published: May 2006

Abstract
The benzene solutions of a mesogenic tetraphenylporphyrin, 5,10,15,20-Tetrakis(4-n-pentadecylphenyl)porphyrin, and its metal complexes (metal: Co, Ni, Cu, Zn, and V = O) were investigated to determine the 3rd-order nonlinear optical susceptibilities χ(3) by nanosecond degenerate four-wave mixing (DFWM) at 532 nm. All solutions of approximately the same concentration ( ≈ 10−5 mol/l) showed χ(3)-values of the same order of magnitude, ≈ 10−11 esu.
Structure and Physical Properties of Two Perchlorate Salts Derived from a Novel Twin Donor. Bis(4′,5′-ethylenedithio-5-methylthiotetrathiafulvalenyl-4-thio)methane
Authors: Izuoka Akira , Kumai Reiji , Sugawara Tadashi 
Published: May 2006

Abstract
A twin donor (1) which consists of two BEDT-TTF moieties linked by a methylenedithio bridge was prepared. Two radical salts of ClO4− with the stoichiometry of 1:1 and 2:1 were obtained through electrochemical crystallization. In the salt of 1•ClO4, the donor has a phane-like conformation. A magnetic behavior of the salt was interpreted by the one-dimensional antiferromagnetic Heisenberg model. On the other hand, the donor exist as a twist phane like conformation in the salt of 1•(ClO4)0.5 and the salt is a semiconductor (σrt = 0.1 S cm−1) with an activation energy of 5 × 10−2 eV.
A New Conjugated Ladder Polymer Synthesized by Solid-State Polymerization of a Hexayne Compound
Authors: Okada Shuji , Hayamizu Kikuko , Matsuda Hiro , Masaki Atsushi , Minami Nobutsugu , Nakanishi Hachiro 
Published: May 2006

Abstract
A new conjugated ladder polymer, in which two polydiacetylene backbones are connected by a butadiynylene group at every repeating unit, was synthesized by spontaneous solid-state polymerization of a dialkylhexayne compound at room temperature.
Synthesis and Crystal Structure of the Novel Dinuclear Vanadium(III) Complex K2[V2(dpot)2]·7H2O Containing 1,3-Diamino-2-propanol-N,N,N′,N′-tetraacetate (dpot)
Authors: Robles Julita C , Shimoi Mamoru , Ogino Hiroshi 
Published: May 2006

Abstract
Reaction of VCl3 with potassium 1,3-diamino-2-propanol-N,N,N′,N′-tetraacetate gave a dinuclear complex K2[V2(dpot)2]·7H2O. X-Ray crystal structure analysis revealed that each vanadium atom in the complex adopts pentagonal-bipyramidal seven-coordination. The dpot4− ion contains a deprotonated alkoxy group, which bridges the two vanadium atoms, and a pendant carboxylic acid group.
Hexafluoroisopropyl Alcohol is a Useful Cosolvent with Dimethylformamide for Tryptic Synthesis of Peptides
Authors: Nishino Norikazu , Xu Ming , Mihara Hisakazu , Fujimoto Tsutomu 
Published: May 2006

Abstract
A low-water-content solvent system, 4% H2O in hexafluoroisopropyl alcohol/dimethylformamide (1:1, v/v), was discovered for the efficient peptide synthesis catalyzed by trypsin. This mixed solvent retains potential superiority to the Klibanov’s solvent, 1% H2O and 9% formamide in t-amyl alcohol, in the synthesis of longer biologically active peptides by enzymatic condensation.
Zirconium Mediated Regioselective Carbon-Carbon Bond Formation Reactions
Authors: Takahashi Tamotsu , Suzuki Noriyuki , Hasegawa Maki , Nitto Yu , Aoyagi Ko-ichiro , Saburi Masahiko 
Published: May 2006

Abstract
Reactions of zirconocene-alkene complexes with aldehydes gave alcohols as coupling products after hydrolysis. The carbon-carbon bond formation proceeded at C1 carbon of alkenes, in sharp contrast to the reactions of alkene-alkene coupling on zirconium. A similar alcohol was also obtained by the reaction of zirconacyclopentane with aldehyde after hydrolysis. Treatment of (C5Me5)2ZrEt2 with styrene gave 2-phenylbutane after hydrolysis contrary to the case of Cp2ZrEt2 which afforded 1-phenylbutane.
Expeditious Asymmetric Synthesis of Optically Pure δ-Lactones Bearing Consecutive Three Asymmetric Centers
Authors: Nagao Yoshimitsu , Tohjo Toshiaki , Ochiai Masahito , Shiro Motoo 
Published: May 2006

Abstract
The (4S)-isopropyl-1,3-thiazolidine-2-thione diamides of 3-substituted glutaric acids were submitted to enolization with Sn(CF3SO3)2 and N-ethylpiperidine. The resultant tin(II) enolate was treated with several aldehydes to give the aldols, which readily undergo basic lactonization affording the corresponding chiral δ-lactones bearing consecutive three asymmetric centers.
Highly Diastereoselective Alcoholysis of σ-Symmetric Dicarboxylic Acid Anhydrides Using 1-Phenyl-3,3-bis(trifluoromethyl)propan-1,3-diol
Authors: Suda Yoshimitsu , Yago Seiji , Shiro Motoo , Taguchi Takeo 
Published: May 2006

Abstract
Highly diastereoselective alcoholysis of σ-symmetric dicarboxylic acid anhydrides was performed using 1-phenyl-3,3-bis(trifluoromethyl)propan-1,3-diol. The importance of the geminally trifluoromethylated carbinol moiety for achieving a high degree of chiral induction was confirmed from lower diastereoselectivity with the hydroxyl protected 1,3-diol or with the similar 1,3-diols having hydrocarbon substituents instead of the trifluoromethyl group.
A New Access to 3-(2′-Aminovinyl)indoles and Their First Diels-Alder Reactions
Authors: Pindur Ulf , Otto Christian 
Published: May 2006

Abstract
3-Acylindoles react with α-amino-α′-diphenylphosphin-oyl-substituted carbanions to 3-(2′-aminovinyl)indoles (7 and 12) Via carbinols. The electron-rich 3-vinylindoles 7 and 12 undergo Diels-Alder reactions with N-phenylmaleimide.
Infrared Spectrum of Veins-of-Leaf Cluster in Laser-Induced Aerosol Formation from CS2 Vapor
Authors: Matsuzaki Akiyoshi , Hamada Yoshiaki 
Published: May 2006

Abstract
A veins-of-leaf cluster is formed on the window surface of a reaction cell in N2-laser-induced aerosol formation from CS2 vapor. The infrared spectrum of this cluster is similar to that of the floating substance collected on a small KBr plate placed in the center of the reaction cell, and rather different from that of the sedimentary material. It is noteworthy that there are characteristic bands, which are present only in the spectrum of this cluster. The X-ray diffraction analysis indicates that an amorphous structure is much major in the cluster.