bluuebunny/crossref_metadata_2025_split huggingface dataset:
ANODIC CYCLIZATION OF DI-2-NAPHTHYLAMINE
Authors: Yasukouchi Kazuo , Taniguchi Isao , Yamaguchi Hiroko , Yokoyama Masayuki , Murasaki Masahide 
Published: July 2006

Abstract
A new compound, 5,12-di-2-naphthyldibenzo[c,j]phenazine, was found to be produced in about 30% yield by anodic oxidation of di-2-naphthylamine in acetonitrile at 0.7 V (vs. Ag/Ag+) with a platinum electrode.
NEW SYNTHESIS OF KARAHANA ETHER
Authors: Mukaiyama Teruaki , Iwasawa Nobuharu , Tsuji Takashi , Narasaka Koichi 
Published: July 2006

Abstract
A new synthesis of karahana ether by employing the intramolecular Diels–Alder adduct of furan and β,β-dimethylacrylamide components is described. The facile oxidation of the adduct to N-nitrosoamide is the most significant step of the present synthetic scheme.
REDOX REACTION DRIVEN BY DIFFUSION OF IONS THROUGH AN ARTIFICIAL LIQUID MEMBRANE
Authors: Shinbo Toshio , Sugiura Masaaki , Kamo Naoki , Kobatake Yonosuke 
Published: July 2006

Abstract
A trans-membrane redox reaction against its redox potential was induced with coupling to diffusion of an anion, when a gradient of anion concentration was imposed across an organic liquid membrane containing dibutyl-ferrocene which separated two solutions of equal redox potential.
NEW FARNESYLACETONE DERIVATIVES FROM SARGASSUM MICRACANTHUM
Authors: Kusumi Takenori , Ishitsuka Midori , Nomura Yukihiro , Konno Toshinori , Kakisawa Hiroshi 
Published: July 2006

Abstract
From the brown alga, Sargassum micracanthum, eight new farnesylacetone derivatives were isolated and their structures were elucidated from spectral and chemical properties.
PHOTOCHEMICAL REACTION SENSITIZED BY DYES IN HETEROGENEOUS PHASE
Authors: Maruyama Kazuhiro , Narita Noritsugu 
Published: July 2006

Abstract
A photosensitized reaction of 2-acyl-1,4-benzoquinone 1 by rose bengal in a homogeneous system afforded the dimer 2 in a good yield. Even in the reactions in heterogeneous systems using rose bengal bound on the surface of silica gel particles, the same dimer was obtained in the comparable yields with those in a homogeneous system, but at a slower rate.
A NOVEL FRAGRANT TRICYCLIC KETONE FROM SANTANOLIDE
Authors: Inayama Seiichi , Singh Ashok Kumar , Kawamata Takeshi , Hirose Tadaaki , Iitaka Yoichi 
Published: July 2006

Abstract
(+)-1β,3α,6αH-4α,7β,11-trimethyltricyclo[5.4.13,6.01,7]dodec-10-en-5-one (3) was obtained together with trimethylethanoadamantanone (2) by an unusual reaction of 3-deoxyhexahydrosantonin (1). The structure, conformation and absolute configuration of 3 was determined by X-ray diffraction and CD/ORD spectrometry.
NOVEL ALKYL- AND PHENYLTHIOMETHYLATION OF AROMATIC COMPOUNDS
Authors: Suzuki Kunio , Sekiya Minoru 
Published: July 2006

Abstract
It has been found that the Mannich bases, of which methylene is linked to amine nitrogen and alkyl- or phenylmercapto-sulfur affect smoothly, in the presence of acid catalyst, alkyl- or phenylthiomethylation of a number of aromatic compounds, i.e. 2-naphthol, aniline, indole and their derivatives.
REACTION OF BUTANE TO ISOBUTANE CATALYZED BY IRON OXIDE TREATED WITH SULFATE ION. SOLID SUPERACID CATALYST
Authors: Hino Makoto , Arata Kazushi 
Published: July 2006

Abstract
Solid acid catalysts were obtained by exposing Fe(OH)3 or Fe2O3 to 0.1–0.5 N H2SO4 and then calcining in air at 500°C. Fe(OH)3 used was prepared by hydrolyzing FeCl3 or Fe(NO3)3 with ammonia, and Fe2O3 by decomposing Fe(NO3)3 at 200°C. These catalysts were active for the skeletal isomerization of butane at room temperature or 0°C.
A MILD AND CONVENIENT METHOD FOR THE PREPARATION OF METHYLTHIOMETHYL ETHERS: PROTECTION OF HYDROXYL GROUPS
Authors: Suzuki Kenji , Inanaga Junji , Yamaguchi Masaru 
Published: July 2006

Abstract
Methylthiomethyl (MTM) ethers of various types of alcohols were prepared under mild conditions by using chloromethyl methyl sulfide and silver nitrate.
REACTION OF RIFAMYCIN S WITH 1,3,5-TRI-t-BUTYLHEXAHYDRO-1,3,5-TRIAZINE
Authors: Tsukamoto Goro , Aikawa Norio , Taguchi Masahiro 
Published: July 2006

Abstract
Rifamycin S and 25-O-desacetylrifamycin S were found to react with 1,3,5-tri-t-butylhexahydro-l,3,5-triazine to give deep-blue compounds. The structures of these compounds are discussed in comparison with those of “so-called deep-blue compounds” reported by earlier workers.
A SYNTHESIS OF dl-ISORETRONECANOL
Authors: Iwashita Takashi , Kusumi Takenori , Kakisawa Hiroshi 
Published: July 2006

Abstract
Isoretronecanol was stereoselectively synthesized using 1,3-dipolar addition of pyrroline oxide to dihydrofuran and a new cyclization of δ-amino alcohol to pyrrolidine.
2-AMINATION OF 1,4-DIHYDROXYANTHRAQUINONE PROMOTED BY COPPER IONS
Authors: Matsuoka Masaru , Makino Yoshinobu , Yoshida Katsuhira , Kitao Teijiro 
Published: July 2006

Abstract
2-Amination of 1,4-dihydroxyanthraquinone(DHAQ) was initiated by the formation of copper complex, which was oxidized to quinizarinquinone followed by the Michael addition of amines. Quantitative 2-amination of quinizarinquinone and reduction of copper ions to metal copper supported the mechanism.
FACILE PREPARATION OF CYCLIC ETHERS BY OXYSELENATION OF DIOLEFINS
Authors: Uemura Sakae , Toshimitsu Akio , Aoai Toshiaki , Okano Masaya 
Published: July 2006

Abstract
Reaction of several diolefins with phenylselenocyanate and copper(II) chloride in aqueous acetonitrile afforded various cyclic ethers having two phenylseleno groups in 42–88% yield. Hydroxyselenation of one double bond, followed by intramolecular oxyselenation on the other double bond, seems to be the reaction pathway.
ω-HYDROXYGERANYLFARNESOL, A NEW C25 ISOPRENOID ALCOHOL, ISOLATED FROM INSECT WAX
Authors: Quijano L , Calderón J S , Ríos Tirso 
Published: July 2006

Abstract
Further investigation of the insect wax of Ceroplastes albolineatus afforded a new sesterterpene, ω-hydroxygeranylfarnesol.
SYNTHESIS AND DEFECT STRUCTURE OF SrLa2(Mg2W2)O12 AND Sr2La2(MgW2)O12
Authors: Torii Yasuyoshi 
Published: July 2006

Abstract
SrLa2(Mg2W2)O12 crystallizes in an orthorhombic perovskite structure, showing a NaCl-type ordering as well as an ordering of A-site vacancies, whereas Sr2La2(MgW2)O12 has a 12-layer hexagonal structure with octahedral-site vacancies. This indicates that the formed structures are closely related to the sites where cation vacancies occur.
ANODIC OXIDATION OF 4-HYDROXYCINNAMIC ACIDS
Authors: Iguchi Masanobu , Nishiyama Atsuko , Eto Hideo , Terada Yukimasa , Yamamura Shosuke 
Published: July 2006

Abstract
Anodic oxidation of 4-hydroxycinnamic acids was carried out at a controlled potential vs. SCE (+900 or 840 mV), using an undivided cell, to afford the corresponding asatone or isoasatone-type compound as well as pinoresinol-type dilactones. In these oxidation reactions, relative ratio of the two dimerization products remarkably depends on the starting acids concentration.
ANOMALOUS SUBSTITUENT EFFECT ON ACTIVATION VOLUME OF ACETOLYSIS OF 2-METHYL-2-(p-SUBSTITUTED PHENYL)PROPYL TOSYLATES
Authors: Sera Akira , Yamada Hiroaki , Yasuda Tetsuro 
Published: July 2006

Abstract
The acetolysis rates of 2-methyl-2-(p-substituted phenyl)propyl tosylates at 75 °C have been determined at various pressure and the activation volumes were calculated. The activation volume of this solvolysis showed an unexpected substituent dependence, being more negative for faster solvolyzing substrates.
ONE-POT TRANSFORMATION OF KETONES TO α,β-UNSATURATED NITRILES VIA TRIMETHYLSILOXY NITRILES
Authors: Oda Masaji , Yamamuro Akira , Watabe Takashi 
Published: July 2006

Abstract
Treatment of ketones with trimethylsilyl cyanide in benzene in the presence of a Lewis acid (ZnI2) as a catalyst and subsequent heating after addition of pyridine and phosphoryl chloride have given α,β,-unsaturated nitriles in good yields, providing a general one-pot preparation of α,β,-unsaturated nitriles from ketones.
TOTAL SYNTHESIS OF (±)-FURANOEREMOPHILANE-3,6-DIONE AND (±)-LIGULARONE BY A ROUTE INVOLVING ALKYLATION OF 2,4-DIMETHYL-3-FUROIC ACID
Authors: Tada Masahiro , Sugimoto Yayoi , Takahashi Takeyoshi 
Published: July 2006

Abstract
Treatment of a dianion generated from 2,4-dimethyl-3-furoic acid with 3-methoxy-2-methyl-2-cyclohexen-1-one gave 4-methyl-2-(3-oxo-2-methyl-1-cyclohexenylmethyl)-3-furoic acid. Catalytic hydrogenation of the alkylated product followed by dehydrative annelation yielded 14-norfuranoeremophilane-4,6-dione, which was converted in five steps into (±)-furanoeremophilane-3,6-dione. (±)-Ligularone has been derived from the 3,6-dione.
DEHYDROGENATION OF HYDRAZOBISCYCLOHEXANENITRILE AND HYDRAZOBISISOBUTYRONITRILE BY POTASSIUM FERRICYANIDE IN THE PRESENCE OF CARBON BLACK
Authors: Tsubokawa Norio , Takeda Naoki 
Published: July 2006

Abstract
In the presence of carbon black, the two-phase dehydrogenation of hydrazobiscyclohexanenitrile and hydrazobisisobutyronitrile in organic solvent by an aqueous solution of potassium ferricyanide gave the corresponding azo-compound in a good yield. It became apparent that the two-phase dehydrogenation of the hydrazines was catalyzed by phenolic hydroxyl groups on the carbon black surface.
OXIDATION OF AMINES TO CARBONYL COMPOUNDS BY PYRIMIDO[4,5-b]QUINOLINE-2,4(3H,10H)-DIONE (5-DEAZAFLAVIN)
Authors: Yoneda Fumio , Sakuma Yoshiharu , Kadokawa Yoko , Koshiro Akira 
Published: July 2006

Abstract
Pyrimido[4,5-b]quinoline-2,4(3H,10H)-dione (5-deazaflavin) oxidized amines under aqueous conditions to give the corresponding carbonyl compounds. This 5-deazaflavin-dependent oxidation of amines was automatically recycled and gave more than 100% of carbonyl compounds based on the 5-deazaflavin.
PHOTOISOMERIZATION OF PHTHALOYL SYSTEM TO ALKYLIDENE PHTHALIDES
Authors: Maruyama Kazuhiro , Osuka Atsuhiro , Suzuki Hitomi 
Published: July 2006

Abstract
Irradiation of a benzene solution of bicyclic diketones 3 and/or 4 gave alkylidene phthalides 5 and 6 in good yields. Structural effects on the photoisomerization were discussed.
SYNTHESIS OF UNSYMMETRICAL PERYLENEBIS(DICARBOXIMIDE) DERIVATIVES
Authors: Nagao Yukinori , Ishikawa Narumi , Tanabe Yoriko , Misono Takahisa 
Published: July 2006

Abstract
Unsymmetrical perylenebis(dicarboximide) derivatives—N-alkyl-N′-aryl-3,4:9,10-perylenebis (dicarboximide) (5a–e, 6a–e, 7a–e, 8a–e, and 9a–e)—were prepared by the condensation of N-alkyl-3,4:9,10-perylenetetracarboxylic monoanhydride monoimide(4a–e) with arylamines (aniline, p-toluidine, p-anisidine, and 3,5-xylidine etc.).
A NEW RING TRANSFORMATION OF ISOXAZOLO[3,4-d]PYRIMIDINES INTO PYRIMIDO[4,5-d]PYRIMIDINES
Authors: Yoneda Fumio , Yano Tetsumi , Higuchi Masatsugu , Koshiro Akira 
Published: July 2006

Abstract
The treatment of isoxazolo[3,4-d]pyrimidines with benzylamines and 4-picolylamine caused ring expansion to the respective pyrimido-[4,5-d]pyrimidines by intramolecular cycloaddition of 1,5-diazahexatriene intermediates. Reaction mechanism of this ring transformation will be discussed.
REACTIONS OF p-TOLUENESULFONYL CHLORIDE WITH STYRENES CATALYZED BY DICHLOROTRIS(TRIPHENYLPHOSPHINE)RUTHENIUM(II)
Authors: Kamigata Nobumasa , Sawada Hideo , Kobayashi Michio 
Published: July 2006

Abstract
In the presence of dichlorotris(triphenylphosphine)ruthenium(II) p-toluenesulfonyl chloride was found to react with styrenes under mild reaction conditions to give alkenyl sulfones in good yields. The reaction was highly regio- and stereoselective and formed only β-hydrogen-substituted (E)-isomers.
TOTAL SYNTHESIS OF RACEMIC LIGULARONE AND ISOLIGULARONE
Authors: Miyashita Masaaki , Kumazawa Toshiaki , Yoshikoshi Akira 
Published: July 2006

Abstract
Racemic ligularone and isoligularone were synthesized from 8α,8aα-dimethyl-1,3-dioxo-1,2,3,4,4aα,5,6,7,8,8a-decahydronaphthalene, which was stereoselectively derived from 8aα-methyl-1,6-dioxo-1,2,3,4,4aα,5,6,8a-octahydronaphthalene, using the KF-catalyzed reaction with 1-nitro-1-phenylthiopropene.
ADDITION OF ORGANOALUMINATES TO ACROLEIN OR METHYL VINYL KETONE IN THE PRESENCE OF A STOICHIOMETRIC AMOUNT OF COPPER(II) ACETATE. A CONVENIENT ROUTE TO KETONES AND ALDEHYDES FROM OLEFINS VIA HYDROALUMINATION
Authors: Sato Fumie , Oikawa Takeshi , Sato Masao 
Published: July 2006

Abstract
Organoaluminates, readily prepared by TiCl4-catalyzed hydroalumination of olefins with LiAlH4, react with acrolein or methyl vinyl ketone in the presence of a stoichiometric amount of copper(II) acetate to give the 1,4-addition product in excellent yield. The facile reactions offer a convenient method for the preparation from olefins of the corresponding aldehydes or ketones.
PREPARATION OF 5-TRIMETHYLSILOXYOXAZOLES FROM 2-OXAZOLIN-5-ONES AND THEIR DIELS–ALDER REACTION: SYNTHESIS OF VITAMIN B6 DERIVATIVES
Authors: Takagaki Hidetsugu , Yasuda Nobuyoshi , Asaoka Morio , Takei Hisashi 
Published: July 2006

Abstract
Various 5-trimethylsiloxyoxazoles were synthesized by the silylation of 2-oxazolin-5-ones using chlorotrimethylsilane and triethylamine in high yields. Diels–Alder reaction of the siloxyoxazoles with N-phenylmaleinimide or dimethyl maleate afforded the corresponding substituted pyridines in high yields. This method was applied to the synthesis of Vitamin B6 derivatives starting from N-formylalanine.
STEREOSPECIFIC TOTAL SYNTHESES OF THE THREE DIASTEREOISOMERS OF CYCLOEUDESMOL
Authors: Ando Masayoshi , Sayama Shinsei , Takase Kahei 
Published: July 2006

Abstract
The stereospecific total syntheses of the three diastereoisomers of cycloeudesmol (Ia, Ib, and Ic) were carried out with the object of establishing the structure of cycloeudesmol.
PYROLYSIS OF β-HYDROXY-α-BROMOSULFOXIDES: A SIMPLE SYNTHESIS OF BROMOMETHYL KETONES
Authors: Reutrakul Vichai , Tiensripojamarn Angkana , Kusamran Kosan , Nimgirawath Surachai 
Published: July 2006

Abstract
The reaction of lithio bromomethyl phenyl sulfoxide with aldehydes gave the corresponding β-hydroxy-α-bromosulfoxides. Pyrolysis of these hydroxysulfoxides yielded the expected bromemethyl ketones in excellent yields.
BASE INDUCED, INTRAMOLECULAR CYCLIZATION WITH OXIDATION IN 9-DIALKYLAMINO-1-ALKYLAMINO-PHENALENIUM IONS
Authors: Franz Klaus-D 
Published: July 2006

Abstract
Alkylation of 9-methylamino-1-methyliminophenalene, (1), gives 1, 9-disubstituted phenalenium salts, (2a,b), which can be cyclized to (4a,b) in the presence of amine and oxygen forming a new N–C bond. A possible mechanism with a Mannich Base type intermediate is discussed. The structure of the new compounds is deduced from their 1H- and 13C-NMR spectra.
ONE-STEP SYNTHESIS OF 3-DIALKYLAMINOINDOLIZINES
Authors: Ohsawa Akio , Abe Yoshihito , Igeta Hiroshi 
Published: July 2006

Abstract
3-Dialkylaminoindolizines, pyrrolo[1,2-a]quinoline, pyrrolo[2,1-a]isoquinoline, and 2-methyl-pyrrolo[1,2-b]pyridazine were obtained from the corresponding α-halo-azaaromatics, propargyl alcohol and secondary amines in the presence of catalytic amounts of Pd(PPh3)2Cl2 and CuI.
FLUORESCENCE OF CHLOROTOLUENE VAPORS
Authors: Shimoda Akira , Hikida Takumi , Ichimura Teijiro , Mori Yuji 
Published: July 2006

Abstract
Fluorescence spectra, fluorescence quantum yields, and fluorescence lifetimes were measured for o-, m- and p-chlorotoluene vapor. The radiative and non-radiative processes of excited chlorotoluene molecules are predominantly determined by the chlorine substitution and only slightly by the methyl substitution. The effect of the excess energy of excitation on the radiative and non-radiative transition rates is discussed in relation to the methyl and chlorine substitutions.
STRUCTURES OF NEW PLASTOQUINONES FROM THE BROWN ALGA SARGASSUM SERRATIFOLIUM
Authors: Kusumi Takenori , Shibata Yoshiko , Ishitsuka Midori , Kinoshita Takeshi , Kakisawa Hiroshi 
Published: July 2006

Abstract
The structures of sargaquinoic acid and sargaquinal, new plastoquinones isolated from the brown alga Sargassum serratifolium, were elucidated as 1a and 2.
NEW BROMO ACETAL FROM THE MARINE ALGA, LAURENCIA NIPPONICA YAMADA (1)
Authors: Suzuki Teruaki , Kurosawa Etsuro 
Published: July 2006

Abstract
The novel skeletal component, laureacetal-B, having bromine and cyclic acetal, has been isolated from the marine alga, Laurencia nipponica Yamada (Japanese name; Urasozo). Its structure was established by its physical properties and the chemical transformations.
A NOVEL HIGH NUCLEARITY PLATINUM ISOCYANIDE CLUSTER
Authors: Yanamoto Yasuhiro , Aoki Katsuyuki , Yamazaki Hiroshi 
Published: July 2006

Abstract
A new isocyanide cluster of platinum, Pt7(C9H9N)12, was prepared by reduction of dichloro-bis(2,6-xylyl isocyanide)platinum(II) with sodium amalgam.
ADDITION REACTIONS OF α-DIMETHYLAMINONITRILES WITH ACRYLONITRILE: A SIMPLE SYNTHESIS OF γ-KETONITRILES
Authors: Reutrakul Vichai , Nimgirawath Surachai , Panichanun Sirichai , Ratananukul Piniti 
Published: July 2006

Abstract
The reaction of the anion derived from α-dialkylaminonitriles with acrylonitrile, followed by hydrolysis with aqueous acids or cupric sulfate in 95% ethanol gave γ-ketonitriles in good yields. This procedure is highly convenient for the synthesis of various γ-ketonitriles.
RAMAN AND RESONANCE RAMAN SPECTRA OF SULFUR-BRIDGED BINUCLEAR MOLYBDENUM(V) COMPLEXES OF CYSTEINE-CONTAINING CHELATE ANIONS
Authors: Ueyama Norikazu , Nakata Michio , Araki Takeo , Nakamura Akira , Yamashita Shinsuke , Yamashita Takuya 
Published: July 2006

Abstract
μ-Disulfido-dioxodimolybdenum(V) complexes of (Cys)2−, (Cys-OMe)−, (Ac-Cys)2−, (Glutathione)2− anions exhibit strong Raman bands at 930–950 cm−1 and 420 cm−1 assignable respectively to Mo=O and Mo–Sbridge stretching vibrations. The resonance Raman spectra provide an excitation profile which is useful for assigning the broad electronic absorption due to the (Remark: Graphics omitted.) moiety.
HYPER RAMAN SPECTRUM OF CYCLOHEXANE
Authors: Hiraya Atsunari , Udagawa Yasuo , Ito Mitsuo 
Published: July 2006

Abstract
Hyper Raman spectrum of liquid cyclohexane was observed with frequency doubled YAG laser as an exciting source. In addition to the counterparts of ir absorption bands, a strong band was observed at 1107 cm−1 and assigned to an a1u vibration, which was forbidden both in ir and Raman and allowed in hyper Raman.
HOMOGENEOUS PERMANGANATE OXIDATION IN NON-AQUEOUS ORGANIC SOLUTION. SELECTIVE OXIDATIONS OF OLEFINS INTO 1,2-DIOLS OR ALDEHYDES
Authors: Ogino Toshio , Mochizuki Kazunori 
Published: July 2006

Abstract
Potassium permanganate solubilized in dichloromethane by use of equimolar amount of triethylbenzylammonium chloride smoothly oxidized olefins to give homogeneous dark brown reaction mixtures, which were then selectively decomposed into either 1,2-diols or aldehydes in good yields by treatment with aqueous solutions depending upon pH.
THE IMPROVED METHOD OF HIGH PERFORMANCE LIQUID CHROMATOGRAPHIC SEPARATION OF INDIVIDUAL BILE ACIDS: FREE AND GLYCINE-CONJUGATED BILE ACIDS
Authors: Okuyama Sumihiko , Uemura Daisuke , Hirata Yoshimasa 
Published: July 2006

Abstract
The improved method of high performance liquid chromatographic separation of bile acids, free and conjugated with glycine, is described. The analysis of free and glycine-conjugated bile acids is based on the esterification of the carboxylic group of bile acids with 4-bromomethyl-7-methoxycoumarin (BMC). These derivatives of bile acids can be separated by high performance liquid chromatography and detected on high sensitivity with a fluorescence detector.
CRYSTALLINE COMPLEXES OF POLY(OXYETHYLENE) DERIVATIVES WITH LANTHANOIDS
Authors: Hirashima Yoshiyuki , Shiokawa Jiro 
Published: July 2006

Abstract
The crystalline complexes of poly (oxyethylene) derivatives (HO(CH2CH2O)nH, n=2–7; CH3O(CH2CH2O)4CH3) with lanthanoid nitrates were prepared. The well-defined complexes have the composition of ligand:metal =1:1 or 1:2. The stability of the complex seems to decrease with increasing atomic number of the lanthanoid.
TOTAL SYNTHESIS OF (±)-ANNONENE, A TRANS-CLERODANE DITERPENE
Authors: Takahashi Satoru , Kusumi Takenori , Kakisawa Hiroshi 
Published: July 2006

Abstract
Total synthesis of (±)-annonene, 1-[2-(3-furanyl)ethyl]-1,2,3,4,4a,7,8,cis-8a-octahydro-1,trans-2,trans-4a,5-tetramethylnaphthalene, which is a trans-clerodane diterpene, is described.
ADDITION REACTION OF 4-METHYLENE-4H-HOMOCHROMENE DERIVATIVES WITH TETRACYANOETHYLENE. POSSIBLE INTERVENTION OF A BENZOHOMOPYRYLIUM ION INTERMEDIATE
Authors: Yamaoka Hiroshi , Yamada Yoshiaki , Ono Susumu , Hanafusa Terukiyo 
Published: July 2006

Abstract
Vinylcyclopropane derivatives could be synthesized with one-pot procedure from α,β-unsaturated thione (chromothione) derivatives by dimethyloxosulfonium methylide. Extremely facile addition of tetracyanoethylene with 4-methylene-4H-homochromenes gave dihydrobenzoxazepine derivatives. The reaction may be well interpreted with the homoaromatic stabilization of the cationic part in a zwitterionic intermediate which would be formed at the rate-determining step.
HIGHLY SELECTIVE VINYL REARRANGEMENT IN THE REACTION OF ISOPRENE BROMOHYDRIN AND ALLYLIC GRIGNARD REAGENTS
Authors: Butsugan Yasuo , Kadosaka Itsuo , Araki Shuki 
Published: July 2006

Abstract
The reaction of isoprene bromohydrin (1-bromo-2-methyl-3-buten-2-ol) (1) with various allylic Grignard reagents in the presence of cuprous iodide gave vinyl group rearranged products (2) highly selectively.
HOMOLYTIC HALOGENATION OF TOLUENE WITH N-HALOSULFOXIMIDES
Authors: Akasaka Takeshi , Furukawa Naomichi , Oae Shigeru 
Published: July 2006

Abstract
Homolytic bromination of toluene with diphenyl N-bromosulfoximide (1) proceeded readily by ultraviolet irradiation or by thermal reaction in the presence of a radical initiator to afford benzyl bromide. However, chlorination of toluene was sluggish with diphenyl N-chlorosulfoximide (2) and methyl phenyl N-chlorosulfoximide (3). α-Bromination was interpreted in terms of a chain process involving bromine molecule like the “Goldfinger mechanism”, but not via that involving the sulfoximidoyl radical.
SELECTIVE BUTYLAMINATION OF 5,8-DIHYDROXY-1,4-NAPHTHOQUINONE PROMOTED BY COPPER SALTS
Authors: Matsuoka Masaru , Takei Toshio , Kitao Teijiro 
Published: July 2006

Abstract
Selective butylamination promoted by copper salts was observed on the reaction of 5,8-dihydroxy-1,4-naphthoquinone(DHNQ) with butylamine. A novel β-butylamination of DHNQ proceeded in the presence of copper salts. A number of β-butylaminated naphthoquinone derivatives were conveniently obtained.
SYNTHESIS AND CONFORMATION OF R-(+)-2-(α-PHENYLETHYL)BENZOPHENONE
Authors: Ako Masayuki , Takenaka Shunsuke 
Published: July 2006

Abstract
As a model of chiral benzophenone, R-(+)-2-(α-phenylethyl)benzophenone was prepared. The NMR and optical data indicate that rotations of the benzoyl and α-phenylethyl moieties are unrestricted in the range of −100 to 150°C, and therefore benzophenone skeleton is not chiral. A preferable conformation is discussed.
CRYSTAL-LIQUID CRYSTAL PHASE TRANSFORMATION AND WATER PERMEABILITY OF ARTIFICIAL AMPHIPHILES AS BIOMEMBRANE MODEL
Authors: Kajiyama Tisato , Kumano Atsushi , Takayanagi Motowo , Okahata Yoshio , Kunitake Toyoki 
Published: July 2006

Abstract
Artificial ammonium amphiphiles with monoalkyl and dialkyl groups form the multilamellar liposome composed of the bimolecular layer. Artificial amphiphiles have characteristics of both thermotropic and lyotropic mesomorphisms. The diffusive permeability of the polymer/artificial amphiphiles composite membrane to water exhibits a distinct jump in the vicinity of the crystal-mesomorphic phase transition temperature.
MOLECULAR MOTION-PERMEABILITY RELATIONSHIPS IN POLYCARBONATE/LIQUID CRYSTAL (EBBA) COMPOSITE MEMBRANE
Authors: Kajiyama Tisato , Nagata Yasuhisa , Maemura Eiji , Takayanagi Motowo 
Published: July 2006

Abstract
The diffusive permeability coefficient to water for the polymer/EBBA composite membrane reveals a distinct jump in the vicinity of the crystal-liquid crystal phase transition temperature of EBBA. The permeability coefficients to hydrocarbon gases increase 100∼200 times over several degrees in the phase transition temperature range.