bluuebunny/crossref_metadata_2025_split huggingface dataset:
Surface Reaction of Dimethyl Phosphite on Alumina and Magnesia Studied by Inelastic Electron Tunneling Spectroscopy
Authors: Higo Morihide , Owaki Yasuhiro , Kamata Satsuo 
Published: July 2006

Abstract
Vibrational spectra of dimethyl phosphite on Al2O3 and MgO surfaces have been measured by inelastic electron tunneling spectroscopy. The analysis of the spectra and comparison of the spectrum of phosphorous acid indicate that dimethyl phosphite decomposes on the surfaces and is adsorbed preferentially as the phosphite anion.
Anti Stereochemistry in SE″ Reaction of an Optically Active 2,4-Dienylsilane
Authors: Hayashi Tamio , Matsumoto Yonetatsu , Ito Yoshihiko 
Published: July 2006

Abstract
The SE″ reaction of (S)-(3E,5E)-2-(trimethylsilyl)hepta-3,5-diene with acetyl chloride and aluminum chloride in dichloromethane proceeded with anti stereochemistry to give (2Z,4E)-6-methylocta-2,4-dien-7-one of R configuration and its (2E,4E) isomer of S configuration.
Ytterbium Metal Mediated Synthesis of Symmetrical and Unsymmetrical Pinacols from Carbonyl Compounds
Authors: Hou Zhaomin , Takamine Kan , Fujiwara Yuzo , Taniguchi Hiroshi 
Published: July 2006

Abstract
Reaction of aromatic aldehydes and ketones with ytterbium metal gives the corresponding pinacols in high yields. Cross-coupling reaction of benzophenone with other carbonyl compounds to produce unsymmetrical pinacols is also described.
Synthesis of Some 1,6-Anhydro Disaccharides via Aryl Glycosyl Sulfones
Authors: Funabashi Masuo , Nagashima Hidetoshi 
Published: July 2006

Abstract
1,6-Anhydro-lactose, -maltose, and -cellobisoe were practically prepared in mild reaction conditions and in fairly good yield via alkaline degradation of various aryl glycosyl sulfones derived from the corresponding disaccharides.
Electron Transfer Reaction from Dimethylanilines to Cation Radical of Magnesium Octaethylporphyrin
Authors: Kojo Shosuke , Morimitsu Kozo , Tabushi Iwao 
Published: July 2006

Abstract
A kinetic study of electron transfer reaction from dimethylanilines to cation radical of magnesium octaethylporphyrin reveals that two mechanisms are operating depending on the redox potentials of dimethylanilines.
SmI2-Induced Deoxygenation of Epoxides and Its Application to Carbonyl Methylenation in Combination with Iodomethylation
Authors: Matsukawa Mihaya , Tabuchi Takanori , Inanaga Junji , Yamaguchi Masaru 
Published: July 2006

Abstract
Deoxygenation of epoxides to olefins was effected by an efficient electron transfer system of SmI2-THF-HMPA in the presence of N,N-dimethylaminoethanol (DMAE) or glutaric anhydride. This procedure, in combination with the SmI2-induced iodomethylation, afforded a new, rapid and mild one-pot carbonyl methylenation method.
Effect of Wettability of Injection Nozzle on the Size of Oil Droplets in Water
Authors: Ogino Keizo , Ohki Hiroshi , Abe Masahiko 
Published: July 2006

Abstract
The hydrophilic cotton filter was found to be more effective as an injection nozzle than any other hydrophobic polymer filters tested to make smaller oil droplets of n-dodecane dispersed in continuum water phase. The droplet size is reduced with an increase in the hydrophilic property (especialy, the hydrogen bonding force) of the polymer surfaces.
Pronounced Catalytic Activity of La1−x Srx CoO3 Highly Dispersed on ZrO2 for Complete Oxidation of Propane
Authors: Fujii Hiroaki , Mizuno Noritaka , Misono Makoto 
Published: July 2006

Abstract
LaCoO3 and La0.8 Sr0.2 CoO3 highly dispersed on ZrO2 was prepared by impregnation method. The high dispersion was confirmed by IR spectra of pyridine adsorbed on ZrO2 as well as by TEM and XRD. The catalysts showed very high catalytic activities for the complete oxidation of propane.
Oxidative Coupling of Methane with Alkaline Earth Halide Catalysts Supported on Alkaline Earth Oxides
Authors: Fujimoto Kaoru , Hashimoto Shigeru , Asami Kenji , Tominaga Hiro-o 
Published: July 2006

Abstract
Halides of alkaline earth metal oxides such as MgCl2 or CaCl2 on CaO or on MgO were found to be excellent catalysts for the oxidative coupling of methane. The selectivity of C2 hydrocarbon reached 87% at 750 °C and CH4/O2=9.
A New Synthetic Approach to the Carbapenem Antibiotic PS-5 from Ethyl (S)-3-Hydroxybutanoate
Authors: Chiba Toshiyuki , Nakai Takeshi 
Published: July 2006

Abstract
A new synthetic route to the PS-5 key precursor is described which involves the fully stereocontrolled transformation of the optically active 2-azetidinone derivative easily obtainable from ethyl (S)-3-hydroxybutanoate.
Crystal Structure of a Binuclear N,N′-Disalicylidene-(R,R)-1,2-cyclohexanediamine-Titanium(IV) Complex and Asymmetric Oxidation of Methyl Phenyl Sulfide with Trityl Hydroperoxide Catalyzed by the Complex
Authors: Nakajima Kiyohiko , Sasaki Caori , Kojima Masaaki , Aoyama Tomonori , Ohba Shigeru , Saito Yoshihiko , Fujita Junnosuke 
Published: July 2006

Abstract
A binuclear titanium(IV) complex with N,N′-disalicylidene-(R,R)-1,2-cyclohexanediamine was prepared and the structure was determined by X-ray analysis. The complex catalyzes asymmetric oxidation of methyl phenyl sulfide with trityl hydroperoxide in methanol at 0 °C to give (R)-methyl phenyl sulfoxide with an optical yield of 53%.
Catalytic Formation of Biaryls from Arenes through C–H Bond Activation by RhCl(CO)(PMe3)2 under Irradiation
Authors: Sakakura Toshiyasu , Sodeyama Touru , Tokunaga Yuko , Tanaka Masato 
Published: July 2006

Abstract
Arenes were dehydrogenatively coupled into biaryls catalyzed by RhCl(CO)(PMe3)2 at room temperature under irradiation. The regioselectivity obtained in the reaction of toluene suggested the presence of a radical intermediate.
Stereoselective C-Glycosidation of Glycals with Organoaluminum Reagents
Authors: Maruoka Keiji , Nonoshita Katsumasa , Itoh Takayuki , Yamamoto Hisashi 
Published: July 2006

Abstract
A new approach to the stereoselective synthesis of C-glycosides from glycals with various organoaluminum reagents has been demonstrated.
Asymmetric Synthesis of (1S,3S,5R)-1,3-Dimethyl-2,9-dioxabicyclo[3.3.1]nonane Mediated by Fermenting Bakers’ Yeast
Authors: Ohta Hiromichi , Ozaki Kazuhiko , Tsuchihashi Gen-ichi 
Published: July 2006

Abstract
Optically active (1S,3S,5R)-1,3-dimethyl-2,9-dioxabicyclo-[3.3.1]nonane has been synthesized in short steps including regio-and enantioselective reduction of 1,3-diketones by actively fermenting bakers’ yeast.
Photoinduced Direct Synthesis of Silylene-Bridged Dinuclear Iron Complexes [(η5-C5H5)2Fe2(CO)2(μ-CO)(μ-SiHR)] from [(η5-C5H5)Fe(CO)2SiMe3] and RSiH3 (R = t-Bu, (CMe2)2H)
Authors: Tobita Hiromi , Kawano Yasuro , Shimoi Mamoru , Ogino Hiroshi 
Published: July 2006

Abstract
Photolysis of [CpFe(CO)2SiMe3] (Cp = η5-C5H5) in the presence of RSiH3 (R = t-Bu, (CMe2)2H) afforded silylene-bridged dinuclear complexes [Cp2Fe2(CO)2(μ-CO)(μ-SiHR)] , The structure of the complex [Cp2Fe2(CO)2(μ-CO)(μ-SiHBut)] was determined by X-ray crystallography.
Diels–Alder Reaction of Dimethyl Acetoxymethylenemalonate with 3,4-Dialkoxyfurans and the Utility of Its Adducts in the Stereospecific Synthesis of Lyxopyranosyl C-Glycosides
Authors: Katagiri Nobuya , Akatsuka Hidenori , Haneda Toru , Kaneko Chikara 
Published: July 2006

Abstract
Dimethyl lyxopyranosylmalonates were synthesized in stereospecific manner from the adducts obtained from Diels–Alder reaction of 3,4-dialkoxyfurans and dimethyl acetoxymethylenemalonate, through retrograde aldol C–C bond fission under reductive condition as a key step.
Induced Circular Dichroism in Calixarene Complexes
Authors: Arimura Takashi , Edamitsu Sayuri , Shinkai Seiji , Manabe Osamu , Muramatsu Tsuyoshi , Tashiro Masashi 
Published: July 2006

Abstract
The induced circular dichroism (ICD) spectra were applied to the estimation of host–guest-type interactions of water-soluble calixarenes. It was found that certain azo-dye stuffs give the ICD spectra in the presence of a chiral calixarene, 5,11,17,23,29,35-hexasulfonato-37,38,39,40,41,42-hexakis((S)-2-methylbutyloxy)calix[6]arene and p-nitrocalix[6]arene and p-nitrocalix[8]arene give the ICD spectra upon complexation of a chiral guest, (R)-1,1′-binaphthyl-2,2′-phosphoric acid but p-nitrocalix[4]arene is absolutely silent.
Palladium-Catalyzed Reaction of Propargylic Acetates with Carbonyl Compounds by SmI2
Authors: Tabuchi Takanori , Inanaga Junji , Yamaguchi Masaru 
Published: July 2006

Abstract
Reductive addition of propargylic acetates to carbonyl compounds proceeded smoothly at room temperature by using SmI2 and a catalytic amount of Pd(PPh3)4 to give the corresponding acetylenic and/or allenic alcohols with appreciable selectivity. The method is useful especially for the preparation of tri- and tetrasubstituted allenic alcohols.
Preparation and Crystal Structures of Tetracyanoquinodimethans Fused with [1,2,5]Selenadiazole Units
Authors: Suzuki Takanori , Kabuto Chizuko , Yamashita Yoshiro , Saito Gunzi , Mukai Toshio , Miyashi Tsutomu 
Published: July 2006

Abstract
The title electron acceptors, TSDA (2) and BSDA (3), were prepared which crystallize isomorphously with the sulfur analogue, BTDA (1). The molecular interactions are enhanced in 2 and 3 compared with 1, which connect the molecules to form two-dimensionally expanded “sheet-like” networks and their infinite layers.
2,4,6-Tris(bis(trimethylsilyl)methyl)phenyl, a New Sterically Demanding Group for Kinetic Stabilization of Unstable Compounds
Authors: Okazaki Renji , Unno Masafumi , Inamoto Naoki 
Published: July 2006

Abstract
The titled group (Ar) has been found to be very efficient for kinetic stabilization of a highly reactive N-thiosulfinyl group. The synthesis and the thermal and photochemical behavior of Ar–N=S=S are described.
Chloroperoxidase Catalyzed Halogenation of Pyrimidine Bases
Authors: Itahara Toshio , Ide Naoko 
Published: July 2006

Abstract
Treatment of uracil or cytosine with H2O2 and potassium halides in the presence of chloroperoxidase in potassium phosphate buffer solution at pH 3.0 resulted in halogenation of the substrates, whereas no reaction occurred on thymine by a similar treatment.
Preparation and Properties of Magnetically-interacting Polymer with Cupper(II) and Vanadyl(II) Poporphyrins
Authors: Kamachi Mikiharu , Cheng Xian Su , Aota Hiroyuki , Mori Wasuke , Kishita Michihiko 
Published: July 2006

Abstract
Polyacrylate having tetraphenylporphinatocupper(II) and tetraphenylporphinatovanadyl(II) in its side chains (Cu : V = 1 : 1.2) has been prepared by the radical copolymerization of the corresponding acrylates. The temperature dependence of its magnetic susceptibility indicates the existence of ferromagnetic interaction.
57Fe-Moessbauer Spectroscopic Studies on the Products of [1.1]Ferrocenophane-1,12-dione with I2, Br2, and DDQ
Authors: Watanabe Masanobu , Masuda Yuichi , Motoyama Izumi , Sano Hirotoshi 
Published: July 2006

Abstract
[1.1]Ferrocenophane-1,12-dione reacts with I2 and DDQ giving a diamagnetic [1.1]ferrocenophane-I2 and DDQ adduct and reacts with Br2 giving a paramagnetic [1.1]ferrocenophanium-1,12-dione+ Br3− salt. The results of 57Fe-Moessbauer spectroscopy and other physicochemical measurements of the reaction products indicate that the formers are an I2 and a DDQ molecular complex, while the latter is a trapped-valence type mixed-valence salt.
Synthesis of Dehydroisoerivanin, Isoerivanin, Ludovicin C, and 1α,3α-Dihydroxyarbusculin B Utilizing the Organoselenium-mediated Reduction of Epoxy Ketone
Authors: Miyashita Masaaki , Suzuki Toshio , Yoshikoshi Akira 
Published: July 2006

Abstract
Short step synthesis of dehydroisoerivanin, isoerivanin, ludovicin C, and 1α,3α-dihydroxyarbusculin B have been achieved by employing the organoselenium-mediated reduction of α,β-epoxy ketone as the key step.
Syntheses and Physical Properties of Tetrakis(methylthio)tetraselenafulvalene (TTC1-TSeF) and Tetrakis(methylseleno)tetraselenafulvalene (TSeC1-TSeF)
Authors: Iwasawa Naoko , Saito Gunzi , Imaeda Kenichi , Mori Takehiko , Inokuchi Hiroo 
Published: July 2006

Abstract
The synthesis of tetrakis(methylthio)tetraselenafulvalene (TTC1-TSeF) by a convenient one-pot reaction using dimethyldisulfide is reported for the first time as well as that of tetrakis(methylseleno)tetraselenafulvalene (TSeC1-TSeF). The physical properties and lattice constants of these compounds are compared with those of TYC1-TTF (Y = sulfur, selenium, and tellurium). TTC1-TSeF is considered to have the smallest on-site Coulomb repulsive energy among these five compounds.
Enantioselective Addition of Diethylzinc to Aldehydes Catalized by Chiral Diamino-diols Derived from Ephedrine
Authors: Soai Kenso , Nishi Mitsugu , Ito Yuhki 
Published: July 2006

Abstract
Dilithium salts of chiral diamino-diols possessing C2 axis derived from ephedrine catalyzed the enantioselective addition of diethylzinc to aldehydes to afford optically active sec-alcohols in up to 85% enantiomeric excess(e.e.).
Photoaddition of Olefins to Quinolin-, Isoquinolin-, and Phthalazin-thione Systems
Authors: Sato Eisuke , Ikeda Yoshiya , Kanaoka Yuichi 
Published: July 2006

Abstract
Irradiation of quinolin-2-, isoquinolin-1-, and phthalazin-1-thiones with olefins afforded photoaddition products: substituted quinolines, isoquinolines and phthalazines at the thiocarbonyl carbon. A new addition-cyclization was found producing tricyclic thiopyrano-isoquinolines and -phthalazines.
Synthesis and Characterization of a Dinuclear Manganese(II,III) Mixed Valence Complex with the Dinucleating Ligand, L-py, 2,6-Bis[bis(2-pyridylmethyl)aminomethyl]-4-methylphenol
Authors: Suzuki Masatatsu , Murata Shuji , Uehara Akira , Kida Sigeo 
Published: July 2006

Abstract
A novel dinuclear manganese(II,III) mixed valence complex, [Mn2(L-py)(CH3COO)2](ClO4)2·H2O, was prepared by reaction of equimolar amounts of Mn(ClO4)2·6H2O and [Mn(dmso)6](ClO4)3 with HL-py, CH3COOH and (C2H5)3N in methanol, where HL-py represents 2,6-bis[bis(2-pyridylmethyl)aminomethyl]-4-methylphenol. Cyclic voltammogram in acetonitrile showed two quasi reversible waves at 0.47 V and 1.02 V (vs. SCE), which are assigned to the redox reactions of Mn(II,III)/Mn(II,II) and Mn(III,III)/Mn(II,III), respectively.
Convenient Reduction of C–C Multiple Bonds Conjugated with Aromatic Rings by PhYbI Complex or Yb Metal
Authors: Hou Zhaomin , Taniguchi Hiroshi , Fujiwara Yuzo 
Published: July 2006

Abstract
A variety of C–C multiple bonds conjugated with aromatic rings are smoothly reduced by the PhYbI/MeOH or Yb/MeOH systems under very mild conditions to give the corresponding saturated products in excellent yields. This reaction provides a novel convenient method for reduction of multiple bonds conjugated with aromatic rings.
57Fe-Moessbauer Spectroscopic Studies of the Reaction Products of Binuclear Metallocenes with Iodine
Authors: Watanabe Masanobu , Motoyama Izumi , Sano Hirotoshi 
Published: July 2006

Abstract
A dark red colored stable diamagnetic adduct of biruthenocene with iodine can be prepared by treating biruthenocene with iodine in a dry benzene-hexane mixture. A less stable diamagnetic adduct of ferrocenylruthenocene with iodine can also be obtained. 1H-NMR and 57Fe-Moessbauer spectroscopic studies of the adducts suggest the presence of a direct interaction between Ru and I atoms in the adducts. Ferrocenylruthenocenylmethane gave iodoruthenocenylmethylene-ferrocenium triiodide.
1,4,5,8-Tetrachalcogeno-2,3,6,7-tetramethylnaphthalenes as New Electron Donors
Authors: Otsubo Tetsuo , Sukenobe Nobuo , Aso Yoshio , Ogura Fumio 
Published: July 2006

Abstract
The title compounds have been prepared with a view of developing new electron donors for low-dimensional molecular complexes. They have increasing donor character in order of the chalcogen triad, i.e., S, Se, Te, and all form semi-conductive complexes with TCNQ.
Structure of Isoamericanin A, a Prostaglandin I2 Inducer, Isolated from the Seeds of Phytolacca americana L.
Authors: Hasegawa Takashi , Fukuyama Yoshiyasu , Koshino Kazuyo , Nakagawa Kazuyuki , Tori Motoo , Asakawa Yoshinori 
Published: July 2006

Abstract
A new neo-lignan, isoamericanin A was isolated as a prostaglandin I2 inducer from the seeds of Phytolacca americana L. and its structure was fully characterized by extensive 2D NMR and long range selective proton decoupling (LSPD) techniques.
Reactions of Stable Wittig Reagents with Episulfides
Authors: Okuma Kentaro , Yamasaki Yusuke , Komiya Takashi , Kodera Yasushi , Ohta Hiroshi 
Published: July 2006

Abstract
Stable Wittig reagents effectively reacted with episulfides to afford dialkyl fumarates and dialkyl maleates in good yields. The reaction probably occurred via attack of the ylide carbanion on episulfide’s sulfur to form a thiocarbonyl intermediate. The ylide further attacked this thiocarbonyl intermediate to give the final olefins.
A New Synthesis of 3-Hydroxy-2,5-dialkyl-1,4-benzoquinones Using Iodine-Copper(II) Acetate
Authors: Horiuchi C Akira , Suzuki Yasuto , Takahashi Masaaki , Satoh J Yasuo 
Published: July 2006

Abstract
Reactions of diosphenol and 3,6-dimethyl-1,2-cyclohexanedione with iodine-copper(II) acetate in acetic acid-water (5:1) at 80 °C gave the respective 3-hydroxy-2,5-dialkyl-1,4-benzoquinone in 25–80% yields. 2-t-Butyl-5-methylcyclohexanone similarly gave the corresponding 3-hydroxy-1,4-benzoquinone in 66% yield.
Thermodynamics of Tetrahedral-Octahedral Configurational Interconversions in Co(II) Complexes. The Ligand Substitution Reaction between Tetrahedral [Co(hmpa)4]2+ Ion and L (L = FA, NMF, DMF, DEF, or DMSO) in Nitromethane
Authors: Abe Yuriko , Morikawa Makiko , Wada Goro 
Published: July 2006

Abstract
Tetrahedral [Co(hmpa)4]2+ ion undergoes a single step reaction with L (L=FA, NMF, DMF, DEF, or DMSO) to form an octahedral [Co(hmpa)2L4]2+ ion in nitromethane. The temperature dependences of the equilibrium constants of tetrahedral-octahedral configurational interconversions exhibit similar values of ΔH=−30–−33 kJ mol−1 and ΔS=−115–−149 J mol−1 K−1 respectively except for larger values for the DMSO complex.
Photochemical Reaction of Furocoumarin (Psoralen). The Reactive Site in Its Photoexcited State
Authors: Otsuki Tetsuo 
Published: July 2006

Abstract
The 3,4-double bond of photoexcited furocoumarin shows a higher reactivity than the 4′,5′-double bond toward simple olefins, leading to the formation of cyclobutane derivatives.
Silver(I)-Catalyzed Isomerization of Quadricyclanes to Norbornadienes in Methanol
Authors: Maruyama Kazuhiro , Tamiaki Hitoshi 
Published: July 2006

Abstract
In methanol, quadricyclanes isomerized to norbornadienes by the catalytic action of silver(I), and methanol added to quadricyclanes by the action of proton. It was first confirmed that silver(I) was the real active species in the isomerization.
A Versatile New Reagent [Ph3GeCH2COGePh3] as Acetate Equivalent. BF3·OEt2 Mediated Aldol Reaction
Authors: Kiyooka Syun-ichi , Shiota Fuminori , Shibuya Tsutomu 
Published: July 2006

Abstract
Triphenylgermylacetyltriphenylgermane, Ph3GeCH2COGePh3, with aldehydes has been found to afford the corresponding aldol products in the presence of boron trifluoride etherate in good yields.
Preparation of a Yellow Heteropoly Molybdosulfate
Authors: Hori Toshitaka , Himeno Sadayuki 
Published: July 2006

Abstract
By heating the Na2MoO4·2H2O/H2SO4 system in the presence of acetonitrile (AN) as an auxiliary solvent, a yellow molybdosulfate complex was formed. The complex was isolated as tetraalkylammonium salts, and the Mo/S ratio was found to be close to 9. The IR and UV spectroscopic characteristics and some chemical properties were elucidated.
Xylene Bis(diethyldithiocarbamate) as a Neutral Carrier for Copper(II)-Selective Membrane Electrode
Authors: Kamata Satsuo , Ogawa Fumiuki , Fukumoto Masaomi 
Published: July 2006

Abstract
Polyvinyl chloride (PVC) membrane electrode based on o-xylene bis(diethyldithiocarbamate) which was newly synthesized as a neutral carrier, exhibits a Nernstian behavior to copper(II) ion for activity range of 10−1 M to 10−5 M. The electrode has given good response for the time and selectivity.
Oxidation Behavior of Vanadyl Pyrophosphate as a n-Butane Oxidation Catalyst
Authors: Matsuura Ikuya , Yoshida Kiyomi , Mori Atsuhito 
Published: July 2006

Abstract
(VO)2P2O7 is oxidized to β-VOPO4 via β′-phase (d = 4.87, 4.23, 3.19, 2.64 Å) which was probably a phosphate such as VPO4.75 containing vanadium in the average oxidation state of + 4.5. However, when excess phosphorus is present in (VO)2P2O7, oxidation stops at the stage of β′-phase. This suggests that the new phase, β′-VPO4.75, is a selective catalyst for n-butane oxidation to maleic anhydride.
Synthesis of Ammonia with RF Discharge. Adsorption of Products on Zeolite
Authors: Uyama Haruo , Uchikura Takeshi , Niijima Hideaki , Matsumoto Osamu 
Published: July 2006

Abstract
The adsorption of nitrogen-hydrogen molecules formed in the RF discharge on zeolite was studied. The ammonia molecules adsorbed on zeolite as ammonium ions were detected by IR spectroscopy and TPD. The present results obtained show that the ammonia synthesis is facilitated by the surface reactions of the NHx (x=1,2) radicals adsorbed on zeolite with hydrogen atoms.
Synthesis of Novel 4,6-Diazaspiro[2.3]hex-1-en-5-ones by the Reaction of Diphenylcyclopropenone Oxime with Isocyanates
Authors: Yoshida Hiroshi , Ohtsuka Hideki , Ogata Tsuyoshi , Matsumoto Kiyoshi 
Published: July 2006

Abstract
Diphenylcyclopropenone oxime hydrochloride (3) was prepared in an 83% yield from diphenylcyclopropenone and hydroxylamine hydrochloride in methanol. The salt 3 reacted with alkyl and aryl isocyanates in the presence of triethylamine to yield 1:2 addition products diazaspiro[2.3]hexenones in good yields.
Effect of Allyl Alcohol on Reduction of β-Keto Esters by Bakers’ Yeast
Authors: Nakamura Kaoru , Inoue Kiyoko , Ushio Kazutoshi , Oka Shinzaburo , Ohno Atsuyoshi 
Published: July 2006

Abstract
Stereochemical course of the reduction of β-keto esters by bakers’ yeast was controlled by treating the reduction systems with allyl alcohol.
Silicon Nitride Carbide Fiber from Spinnable Polymethylsilazanes
Authors: Nakaido Yasuaki , Otani Yo , Kozakai Noriyuki , Otani Sugio 
Published: July 2006

Abstract
Silicon nitride carbide fiber was prepared from polymethylsilazanes comprizing binary components. The gelatinous polymethylsilazanes obtained from the binary system consisting of commercially available methyltrichlorosilane and dimethyldichlorosilane were remarkably suitable precursors to make the amorphous ceramic fibers.
Synthesis of Heterosteroids. The First Synthesis of 11-Thiasteroids and a New Synthesis of 11-Oxasteroids
Authors: Suginome Hiroshi , Wang Jian Bo , Yamada Shinji 
Published: July 2006

Abstract
We report the syntheses of 3α-hydroxy-11-thia-5β,9β-pregnane, the first 11-thiasteroid, and 3α-hydroxy-11-oxa-5β-pregnane by the replacement of the 11-carbonyl group of 3α-hydroxy-5β-pregnane-11,20-dione acetate by a sulphur or an oxygen atom.
New Possibilities in the Michael Reaction by the Use of Tin(II) Enolates
Authors: Yura Takeshi , Iwasawa Nobuharu , Mukaiyama Teruaki 
Published: July 2006

Abstract
The Michael addition reaction of tin(II) enolates with α,β-unsaturated ketones proceeds smoothly by the use of chlorotrimethylsilane as an activator to give the corresponding addition products in good yields.
High-pressure Ammonolysis of Lactones to Hydroxyamides
Authors: Matsumoto Kiyoshi , Hashimoto Shiro , Okamoto Tadashi , Otani Shinichi , Hayami Jun’ichi 
Published: July 2006

Abstract
The preparation of hydroxyamides from a variety of lactones and amines has been achieved at 9 kbar and 30 °C or 65 °C. The yields of hydroxyamides were excellent to moderate.
A Short, Efficient, Stereoselective Synthesis of Functionalized Cyclopropanes through the Cyclization of N-Phenyl-3-phenylthio-2-(phenylthiomethyl)propanamide
Authors: Tanaka Kazuhiko , Minami Keizaburo , Kaji Aritsune 
Published: July 2006

Abstract
Treatment of N-phenyl-3-phenylthio-2-(phenylthiomethyl)propanamide with 3.3 equiv. of butyllithium in THF-TMEDA produced a new dianion of 2-(phenylthio)cyclopropanecarboxamide which could react with a variety of electrophiles to give cyclopropanes with high stereoselectivity.