bluuebunny/crossref_metadata_2025_split huggingface dataset:
ESR and Structure of Cation Radicals of 2,3,6,7-Tetrahydro-1,4,5,8-tetrathiaanthracene and 2,3,6,7-Tetrahydro-1,4,5,8-tetrathiaphenanthrene
Authors: Morihashi Kenji , Kikuchi Osamu , Nabeshima Tatsuya , Iwata Satoru , Furukawa Naomichi 
Published: April 2006

Abstract
The cation radicals of 2,3,6,7-tetrahydro-1,4,5,8-tetrathiaanthracene (HTA) and 2,3,6,7-tetrathia-1,4,5,8-tetrathiaphenanthrene (HTP) have been characterized by ESR spectroscopy. The remarkable alternating linewidth effects were observed in the spectra of HTA+• and HTP+• both in concd H2SO4 and in AlCl3/CH3NO2.
Cp2TiPh2-Catalyzed Dehydrogenative Coupling of Polyhydromonosilanes
Authors: Nakano Taichi , Nakamura Hidehisa , Nagai Yoichiro 
Published: April 2006

Abstract
The Cp2TiPh2-catalyzed reaction of dihydrosilanes afforded dehydrogenative coupling products, disilanes and/or trisilanes. The reaction using phenylsilane produced hydride-terminated poly(phenylsilylene) polymers with = 730 and = 960, which exhibited the longest UV absorption maximum at 245 nm(ε, 5.7 × 104).
Racemization of (−)-Vincadifformine Using Microwave Oven
Authors: Takano Seiichi , Kijima Atsushi , Sugihara Takumichi , Satoh Shigeki , Ogasawara Kunio 
Published: April 2006

Abstract
Thermolysis of (−)-vincamine in DMF using a microwave oven has brought about total racemization via concurrent Diels–Alder cycloreversion and cycloaddition.
Ring Expansion Reaction of Heterocyclic Cation Compounds by Incorporating One Nitrogen Atom Using I2–NH3 System
Authors: Yonemoto Katsumi , Shibuya Isao 
Published: April 2006

Abstract
The reaction of various heterocyclic cation compounds with I2/NH4OH resulted in ring expansion on nitrogen atom. The similar ring expansion reaction occurred on the corresponding triiodides with NH4OH. The reaction mechanism based on initial nucleophilic attack of NH3 on cations, subsequent oxidative iodination, and liberation of I− is proposed.
Structure Elucidation of “Hydroxycycloaraneosene” by Unambiguous Total Synthesis. An Eight-Membered Ring Formation via a Lewis Acid-Catalyzed Ene-Reaction
Authors: Kato Nobuo , Wu Xue , Tanaka Shinya , Takeshita Hitoshi 
Published: April 2006

Abstract
An improved eight-membered ring closure by means of a Lewis acid-catalyzed ene-reaction of an iridoid dimer produced a tricyclic derivative which was further converted to cycloaraneosene and its congener, “hydroxycycloaraneosene”. Total synthesis of the latter established its structure to be 8β-hydroxy derivative, not as the originally-proposed 9α-.
Can Hydrogen Atoms in Alkyl Group Interact with π-Electrons of Double Bonds ? Theoretical Study for the CH–π Interaction on Organic Molecules
Authors: Sakakibara Kazuhisa , Hirota Minoru 
Published: April 2006

Abstract
Theoretical study for the CH–π interaction, which is considered to be exerted between π-electrons of olefinic carbons and proximate hydrogen atoms in alkyl group, has been made by molecular mechanics and molecular orbital (ab initio and AM1) calculations for the model molecule 5-isopropyl(R)-2-methyl-1,3-cyclohexadiene.
Addition Reactions of Diazotropilidene with Monosubstituted Ethylenes Leading to 3-Substituted Indanones
Authors: Saito Katsuhiro , Takahashi Kensuke 
Published: April 2006

Abstract
Reactions of tropone tosylhydrazone sodium salt with monosubstituted ethylenes afforded 3-substituted indanones via dipolar additions of diazotropilidene to the ethylenes followed by rearrangements involving norcaradiene forms.
Electrochemical Polymerization of N-Trimethylsilylpyrrole and Characterization of the Resulting Conducting Polymer
Authors: Okano Mitsutoshi , Toda Atsuko , Mochida Kunio 
Published: April 2006

Abstract
A new conducting polymer was synthesized by electrochemical polymerization of N-trimethylsilylpyrrole. The polymer had good film producibility. The as grown film, which was in the doped state, showed conductivity of 5 × 101 S cm−1. The film showed three colors depending on the doping level, blue in the doped state, yellow in the undoped state, and reddish color in between.
Diazo-Coupling Reactions with Calix[4]arene. pKa Determination with Chromophoric Azocalix[4]arenes
Authors: Shinkai Seiji , Araki Koji , Shibata Jiro , Tsugawa Daisuke , Manabe Osamu 
Published: April 2006

Abstract
Six azocalix[4]arenes were synthesized for the first time by diazo-coupling reactions with calix[4]arene. The products showed unusual spectral properties including an azophenol–quinine–hydrazone tautomerism. Owing to the chromophoric nature, the four pKa’s for water-soluble p-(4-trimethylammoniopheylazo)calix[4]arene could be determined to be 0.5, 2.0, 10.0, and ca. 13. The marked pKa split was explained by the strong hydrogen-bonding interactions characteristic of calix[4]arene.
Extraction of Organic Dianionic Species with Dicationic Extractants and Their Application to Anion Selective Electrode
Authors: Ohki Akira , Yamura Masanobu , Kumamoto Seishi , Maeda Shigeru , Takeshita Toshio , Takagi Makoto 
Published: April 2006

Abstract
Dicationic type anion-exchange extractants, CnBP, extracted organic dianionic species to a much greater degree as compared with classical monocationic extractants (Capriquat, etc.). This high extraction ability was applied to poly(vinyl chloride) (PVC) membrane electrode (coated-wire type). The electrode was found to be highly selective to 1,5-naphthalenedisulfonate anion (NDS2−).
Catalytic Activity of Perovskite-Type Oxides for the Direct Decomposition of Nitrogen Monoxide
Authors: Teraoka Yasutake , Fukuda Hisashi , Kagawa Shuichi 
Published: April 2006

Abstract
Perovskite-type oxides showed the catalytic activity for NO decomposition above 773 K, which depended largely on constituent metal cations and their composition. Results obtained indicate that perovskite-type oxides such as La0.8Sr0.2CoO3 are a promising NO decomposition catalyst having high activity and thermal stability at elevated temperatures.
Liquid Crystalline State in Hexakis[4-(4-cyano)biphenoxy]- and Hexakis[4-(phenylazo)phenoxy]cyclotriphosphazenes
Authors: Moriya Keiichi , Yano Shinichi , Kajiwara Meisetsu 
Published: April 2006

Abstract
We synthesized hexakis[4-(4-cyano)biphenoxy]cyclotriphosphazene(HCBCTP) and hexakis[4-(phenylazo)phenoxy]cyclotriphosphazene(HPAPCTP) and found a nematic phase between 529 and 488 K in the cooling process of HCBCTP by DSC measurements and polarizing microscope observations, but no mesomorphic state was found in HPAPCTP.
A New Class of S-Bridged Polynuclear Complex. The Formation and Crystal Structure of Spontaneously Resolved [{Rh(aet)3}4Zn3O]4+ (aet = 2-aminoethanethiolate)
Authors: Konno Takumi , Okamoto Ken-ichi , Hidaka Jinsai 
Published: April 2006

Abstract
Reaction of fac(S)-[Rh(aet)3] with Zn2+ in water gave spontaneously resolved [{Rh(aet)3}4Zn3O]4+ (aet = 2-aminoethanethiolate), of which structure and absolute configuration have been determined by X-ray crystallographic method. In the isomer each Zn(II) is tetrahedrally coordinated by three thiolato atoms from three different Λ-fac(S)-[Rh(aet)3] and a central oxygen atom.
Bilayer Membranes of Amphiphilic Crown Ethers with Amino Acid Residue
Authors: Furusawa Kunio , Obata Chiharu , Matsumura Hideo , Takeuchi Motoharu , Kuwamura Tsunehiko 
Published: April 2006

Abstract
An amphiphilic crown ether (5) with amino acid residues and two long hydrocarbon chains(2C12) was synthesized and the membrane(vesicle) properties of 5 were examined. 5 spontaneously formed a stable bilayer membrane and gave uniform single unilamellar vesicles(SUV). The resulting SUV showed strong retaining power related to the release of a trapped fluorescent marker and a highly selective complexing ability for specific metal cations.
The Binding Degree Dependence of the Coil-Helix Transition of Poly(l-ornithine) in Aqueous Surfactant Solution
Authors: Satake Iwao , Hayakawa Katumitu 
Published: April 2006

Abstract
A new interpretation was presented for the binding degree dependence of the helical content of poly(l-ornithine) in solutions of sodium 1-decanesulfonate. The calculation based on an assumption that the coil to helix transition occurs only in bound surfactant ion clusters reproduced well the experimental data.
Effects of Variations of Alkoxy Substituents upon Cyclizations of Dialkoxy-2-chloroethylsilyl Enol Ethers to form 2,2-Dialkoxy-1-oxa-2-silacyclohexanes
Authors: Walkup Robert D , Obeyesekere Nihal U , Kane Robert R 
Published: April 2006

Abstract
Various dialkoxychloroethylsilyl enol ether derivatives of pinacolone, upon treatment with tributylstannane and AIBN, underwent free-radical cyclizations to yield isolable 2,2-dialkoxy-1-oxa-2-silacyclohexanes. As the bulkiness of the alkoxy groups increased, the selectivity of the reaction for forming cyclized instead of directly reduced acyclic byproducts improved.
Effective Transfer of Membrane Proteins from Human Erythrocytes to Artificial Boundary Lipid-Containing Liposomes
Authors: Sunamoto Junzo , Goto Mitsuaki , Akiyoshi Kazunari 
Published: April 2006

Abstract
Several proteins were directly and effectively transferred from human erythrocyte membranes to dimyristoylphosphatidylcholine (DMPC) liposomes which contain an artificial boundary lipid (1,2-dimyristoylamido-1,2-deoxyphosphatidylcholine, DDPC). Of the membrane proteins, the activity of acetylcholine esterase (AchE) was monitored. The activity of AchE and the amount of total protein transferred were highest when 40 mol% of DDPC was added to DMPC.
The Methylene Blue-Sensitized Photooxidation of Quadricyclane, Reinvestigated
Authors: Hatsui Toshihide , Takeshita Hitoshi 
Published: April 2006

Abstract
Photooxygenation of quadricyclane(1) was shown to proceed via the electron transfer mechanism on the basis of the structure revision of a methoxy alcohol. Photoisomerization of 1 to norbornadiene occurred during the irradiation.
Reactions of Acetals of α,β-Unsaturated Ketones with Silylated Nucleophiles as Trimethylsilyl Cyanide and Phenylthiotrimethylsilanes
Authors: Mukaiyama Teruaki , Takenoshita Haruhiro , Yamada Masaaki , Soga Tsunehiko 
Published: April 2006

Abstract
A result of the reaction between phenylthiotrimethylsilane and (E)-chalcone dimethyl acetal let us to reinvestigate the structure of the isomerized products obtained from the reaction of acetals of (E)-chalcone derivatives with trimethyl cyanide recently reported from our laboratory. It was found consequently that previously assigned isomerized products were not Z-isomer of α-methoxy-β,γ-unsaturated nitriles, but γ-methoxy-α,β-unsaturated nitriles produced by double transfer of double bond and methoxy group. Reactions of thus formed nitriles with several silylated nucleophiles are also described.
Structure Determination of 5-Aminovaleric Acid from Synchrotron Powder Diffraction Data Obtained by Large Radius Camera
Authors: Honda Kazumasa , Goto Midori , Kurahashi Masayasu 
Published: April 2006

Abstract
Crystal structure of 5-aminovaleric acid has been determined by synchrotron X-ray powder diffraction. Diffraction data of high angle-resolution and of accurate intensity were collected by a large-radius (28.65 cm) Weissenberg camera using monochromatic X-rays. The structure was successfully solved from these data by combination of Patterson synthesis and trial and error method, followed by Rietveld refinement.
Effects of Size Quantization of Zinc Sulfide Microcrystallites on Photocatalytic Reduction of Carbon Dioxide
Authors: Inoue Hiroshi , Torimoto Tsukasa , Sakata Takao , Mori Hirotaro , Yoneyama Hiroshi 
Published: April 2006

Abstract
ZnS microcrystallites prepared by using the precipitation method with different molar ratios of Zn2+ to S2− exhibited different activities for CO2 reduction, and the greater the molar ratio of Zn2+ to S2− the higher the activity.
Oxidative Conversion of Diphosphonate to Diphosphate and Isohypophosphate by Hydrogen Peroxide
Authors: Yoza Norimasa , Tokushige Noriko , Nakazato Tetsuya , Takehara Ko , Ide Yasushi , Baba Yoshinobu 
Published: April 2006

Abstract
Diphosphonate (oxidation number of phosphorus +3) could be oxidized by hydrogen peroxide without P–O–P bond cleavage. The formation of dimeric compounds; diphosphate (oxidation number +5) and isohypophosphate (oxidation numbers +3 and +5), was characterized by HPLC and 31P NMR.
Heterogeneous Selective Cyclotrimerization of Acetylene to Benzene by Lanthanide-Ti(IV) Catalysts
Authors: Imamura Hayao , Miura Hiroshi , Konishi Tomohiro 
Published: April 2006

Abstract
In the presence of titanium halides, the oxide-supported lanthanide (Yb/SiO2 or Yb/γ-Al2O3) was converted into selective cyclotrimerization catalysts of acetylene to benzene. The TiCl4-treated Yb/SiCO2 catalysed trimerization of acetylene in 85% selectivity at 294 K.
A New Catalytic System for Alcohol Oxidations by Employing N-Hydroxylamine–Flavin–O2 in a Two-Phase System
Authors: Suzuki Toshiaki , Iizuka Kenzo , Nabeshima Tatsuya , Yano Yumihiko 
Published: April 2006

Abstract
1-Hydroxyl-4-methoxy-2,2,6,6-tetramethylpiperidine (TMP) and benzo-dipteridine (BDPOX) were found to act as turnover oxidation catalysts for alcohols under aerobic conditions in a two-phase system (H2O–CH2Cl2). This catalytic activity was enhanced by photo-irradiation.
Surface-active Organo Manganese and Cobalt Complexes(1+) Having a Long-chain Alkyl Group
Authors: Sakai Shizuyosi , Kozawa Hidetoshi , Saeki Hiroshi , Fukuzawa Shin-ichi , Fujinami Tatsuo 
Published: April 2006

Abstract
Surface-active tricarbonyl(dodecylamino- or dodecyloxo-benzene) manganese(1+) and (dodecylaminocarbonyl and dodecyloxycarbonyl) cobalticinium chlorides were prepared and their abnormally low cmc values and “redox-responsible” surface character were studied.
Preparation of Uniform Zinc Oxide Particles by Homogeneous Precipitation from Zinc Sulfate and Nitrate Solutions
Authors: Tsuchida Takeshi , Kitajima Seiko 
Published: April 2006

Abstract
Monodispersed, hexagonal prismatic and spindle-shaped zinc oxide particles have been prepared by hydrolyzing zinc sulfate and nitrate solutions at elevated temperatures in the presence of urea.
A Phototropic Crystal Growth of β-Ta2O5 by KrF Laser Photolysis of Ta(OCH3)5
Authors: Imai Yoji , Watanabe Akio , Osato Kazuo , Kameyama Tetsuya , Fukuda Kenzo 
Published: April 2006

Abstract
Sublimated Ta(OCH3)5 gas was decomposed by KrF excimer laser under the coexistence of helium gas. The deposit obtained was strongly-oriented β-Ta2O5, which had columnar structure. It grew nearly toward the irradiation direction of the laser light.
Preparation of Quantized-CdS Doped Poly(Methyl Methacrylate) Films. Optical and Morphological Properties
Authors: Yanagida Shozo , Enokida Takashi , Shindo Akihiro , Shiragami Tsutomu , Ogata Tomoyuki , Fukumi Toshio , Sakaguchi Toru , Mori Hirotaro , Sakata Takao 
Published: April 2006

Abstract
Optically transparent poly(methyl methacrylate) films incorporated with CdS quantum crystallites are prepared by using pyridine-soluble phenyl-capped CdS microcrystallites (av. 2–8 nm). The morphology of the CdS in the films is characterized by UV-vis spectroscopy and TEM, and the film doped with av. 8-nm CdS is found to have large third-order nonlinearity by degenerate four-wave mixing technique.
Catalytic Asymmetric Aldol Reaction of Ketene Silyl Acetals with Aldehydes by Use of Chiral Bissulfonamido Zinc(II)
Authors: Mukaiyama Teruaki , Takashima Tohru , Kusaka Haruhiko , Shimpuku Tetsuro 
Published: April 2006

Abstract
Enantioselective aldol reaction of ketene silyl acetals with aldehydes is effectively performed by use of a catalytic amount of chiral bissulfonamido zinc(II), easily prepared from diethylzinc and chiral sulfonamides.
Activation for One-electron Reduction at Oxomolybdenum Center by Parallel Coordination of Two Cys-Pro-Leu-Cys Ligands
Authors: Ueyama Norikazu , Yoshinaga Naoto , Kajiwara Atsushi , Nakamura Akira 
Published: April 2006

Abstract
[MoVO(Z-cys-Pro-Leu-cys-OMe)2]− was synthesized by the (1:2) reaction of [MoVO(SPh)4]− with Z-Cys-Pro-Leu-Cys-OMe. The complex consists of two isomers which exhibit different visible, ESR, and Raman spectra and electrochemical properties. A novel tetradentate peptide complex with parallel peptide orientation, (NEt4)[MoVO cyclohexylene-cis-1,2-bis(amido-cys-Pro-Leu-cys-OMe) ] was similarly synthesized in solution at 273 K. The ESR signals at gx = 1.961, gy = 1.981 and gz = 2.028 were found to coincide with those of one of the two isomers. The parallel coordination of two Cys-X-Y-Cys ligands to MoVO3+ ion provides a remarkable ease in one-electron reduction through the positive shift of the redox potential relative to the anti-parallel coordination.
Transient Isoemissive Point Observed in the Temperature-Dependent Fluorescence Decay of J-Aggregates Adsorbed on Silica Gel
Authors: Kemnitz Klaus , Yoshihara Keitaro , Tani Tadaaki 
Published: April 2006

Abstract
The nonexponential fluorescence decays of J-aggregates adsorbed on silica gel, acquired at various temperatures, intersect in a well defined point. The observation of this novel phenomenon requires excitation at the high energy side of the J-aggregate absorption band, whereas excitation at the maximum yields standard fluorescence decay behaviour with a steady slowdown at lower temperatures.
Weak Attractive Interaction between Axially Coordinated Imidazoles and meso-Substituents in Low Spin Tetraarylporphyrinato-iron(III) Complexes
Authors: Nakamura Mikio , Nakamura Nobuo 
Published: April 2006

Abstract
Thermodynamics for the formation of low spin tetrakis(2,4,6-trialkylphenyl)porphyrinato-iron(III) was studied. In sharp contrast to the case of phenyl porphyrin, triisopropylphenyl analogue showed a larger negative enthalpy of formation with 1,2-dimethylimidazole than with 1-methylimidazole. The finding is clear evidence for the attractive interaction between the ortho-alkyl groups and the imidazole moiety.
A First Palladium-Catalyzed Aryldegermylation of Styryltrimethylgermanes
Authors: Ikenaga Kazutoshi , Matsumoto Satoshi , Kikukawa Kiyoshi , Matsuda Tsutomu 
Published: April 2006

Abstract
Both β-(E)- and β-(Z)-styryltrimethylgermanes easily reacted with arenediazonium tetrafluoroborates under palladium catalysis to give aryldegermylated products, (E)-PhCH=CHAr and Ph(Ar)C=CH2. On the other hand, the aryldegermylation of α-styrylgermane gave (E)-stilbene derivatives with high stereo- and regioselectivities.
A New Series of Electroluminescent Organic Compounds
Authors: Nohara Masao , Hasegawa Masaki , Hosokawa Chishio , Tokailin Hiroshi , Kusumoto Tadashi 
Published: April 2006

Abstract
A new series of electroluminescent organic compounds, 2,5-distyrylpyrazine derivatives, were prepared and investigated on EL properties. The high brightness was achieved in some of these compounds at a low dc voltage of about 10 V.
Novel Preparation Method of Highly Copper Ion-exchanged ZSM-5 Zeolites and Their Catalytic Activities for NO Decomposition
Authors: Iwamoto Masakazu , Yahiro Hidenori , Torikai Yuji , Yoshioka Tetsunori , Mizuno Noritaka 
Published: April 2006

Abstract
Copper(II) ion-exchanged ZSM-5 zeolites with 100% or more exchange levels were readily prepared by addition of basic compounds such as ammonia and Mg(OH)2 to the mother solution. The catalytic activities of the resulting zeolites for decomposition of nitrogen monoxide are dependent on pH of the solution and the additive.
On the High Stability of Hypervalent X–Se–X Bonds Superior to Dipolar I–X Bonds Formed in the Reaction of I2 with Selenides and Cl2 or Br2
Authors: Nakanishi Waro , Okumura Yasuo 
Published: April 2006

Abstract
The Formation of a hypervalent X–Se–X bond in a TB, together with a non-polar I–I bond in an MC, was superior to that of a couple of dipolar I-X bonds in MC’s (RSeXX′R′: R, R′ = Me or Ph; X, X′ = Cl,Br, or I). The stability of the X–Se–X bonds depended much more on the difference of their elecrtonegativities than that of the I-X bonds: MC’s of IX of selenides were formed in solution when X was only Br or I.
Synthesis and the Structure of Bis(tetraphenylphosphonium) [Ni(1,2-trans-dimercaptocyclohexane)2]. A New Addition to the Ni3+ Generating Thiolato Nickel Complexes
Authors: Yamamura Takeshi , Arai Hiroki , Kurihara Hiroaki , Kuroda Reiko 
Published: April 2006

Abstract
1,2-trans-Dimercaptocyclohexane and NiCl2·6H2O reacted in aqueous alkaline solution to give [Ni(1,2-trans-dimercaptocyclohexane)2]2−, which generated Ni3+ in a reversible manner on electrodes. X-ray crystallography has shown that the coordination unit of this compound is NiS4 square planar. Ni K-edge XANES spectrum of this compound, which was almost superimposable to that of [Ni(SCH2CH2S)2]2−, was similar to those of Ni atoms in hydrogenases and CO-dehydrogenases.
Synthesis of Sterically Congested Cyclam Derivatives and Their Nickel(II) Complexes
Authors: Kobiro Kazuya , Nakayama Atsuyoshi , Hiro Toshitaka , Suwa Mitsuhito , Kakiuchi Kiyomi , Tobe Yoshito , Odaira Yoshinobu 
Published: April 2006

Abstract
A new class of cyclam, octamethylcyclam, and its related compounds bearing tetramethylethane, cis-cyclohexane, or trans-cyclohexane subunit(s) have been synthesized. Nickel(II) complexes with sterically congested ligands have been shown to be low-spin complexes in water, while those with less congested ligands to be mixtures of low-spin and high-spin ones. Nickel(II) complexes with sterically congested ligands have been also exhibited to have higher half-wave potentials (E1/2(NiII,III)) than those of the complexes with less congested ligands.
Remarkable Dispersion Effect of TiO2 Catalyst on Silica Support in Propene–Deuterium Addition and Exchange Reaction
Authors: Naito Shuichi , Tanimoto Mitsutoshi 
Published: April 2006

Abstract
Investigation on the effect of dispersing small particles of TiO2 over silica upon the rate and mechanism of propene–deuterium reaction revealed that lower loading catalysts (1–8 wt%) exhibit markedly different catalytic behavior from that over unloaded TiO2.
Thermal and Nickel-catalyzed Dimerization of Hexapentaene. Synthesis of Two [4]Radialenes with Planar, Stable Cyclobutadiene-like Geometry
Authors: Iyoda Masahiko , Oda Masaji , Kai Yasushi , Kanehisa Nobuko , Kasai Nobutami 
Published: April 2006

Abstract
The thermal and nickel-catalyzed cyclodimerization of the hexapentaene produced two types of [4]radialenes. The X-ray structural analysis of the thermal dimer has shown that the molecule has a pinwheel-like structure with the exactly planar central four-membered ring.
Crystallographic Approach to the Origin of “Syn-Effect”
Authors: Inomata Katsuhiko , Hirata Takaki , Sasada Yoshihiro , Asada Takahiro , Senda Hitoshi , Kinoshita Hideki 
Published: April 2006

Abstract
It was revealed by X-ray crystallography that α-unsubstituted (E)-vinyl sulfones have syn-conformation which seems to be the cause of “syn-effect” found in the conversion of (E)-vinyl sulfones to the corresponding allyl sulfones with a base under mild conditions. Syn-conformation of a terminal olefin in solid state was also confirmed.
Synthesis of Highly Coheterotactic Poly(Methyl Methacrylate-alt-Styrene)
Authors: Gotoh Yaeko , Iihara Tadashi , Kanai Naokuni , Toshima Naoki , Hirai Hidefumi 
Published: April 2006

Abstract
Highly coheterotactic poly(methyl methacrylate-alt-styrene)s have been synthesized by using boron trichloride excess to methyl methacrylate at low temperature below −60 °C. The highest value of their coheterotacticities in triad sequence was about 90 mol%, which is the highest in heterotacticity among the polymers ever reported.
Bicycloannulation of C=N Double Bonds through Organotin-Aided Three Component Coupling. A Short and Stereoselective Synthesis of (±)-allo-Berbane and (±)-allo-Yohimbane Systems
Authors: Yamaguchi Ryohei , Hamasaki Takashi , Utimoto Kiitiro , Kozima Sinpei , Takaya Hidemasa 
Published: April 2006

Abstract
Organotin-aided three component couplings of C=N double bonds with 2,4-pentadienyl and α,β-unsaturated acyl groups followed by intramolecular Diels–Alder reactions result in highly stereoselective bicycloannulation of the C=N double bonds to afford allo-berbane and allo-yohimbane systems in one-flask operation.