bluuebunny/crossref_metadata_2025_split huggingface dataset:
ELECTRONIC EFFECTS OF ADDITIVES ON THE SELECTIVITY IN CO/H2 REACTION OVER NICKEL CATALYSTS
Authors: Okamoto Yasuaki , Matsunaga Etsuo , Imanaka Toshinobu , Teranishi Shiichiro 
Published: July 2006

Abstract
It was found with CO/H2 reaction over unsupported Ni catalysts that the C2+/CH4 selectivity decreased in the order; Ni-boride &gt; Raney-Ni &gt; Decomposed-Ni ∼ Ni-phosphide. This suggests that both the activity and selectivity increase as the electron density on Ni metal increases. The H/C atomic ratio of the surface carbon species deposited during the reaction was also dependent on the catalyst.
DIELECTRIC ABSORPTION IN POLYCRYSTALLINE IRON(II) PHOSPHATE. A POSSIBLE MODEL OF ELECTRON HOPPING BETWEEN TWO SITES IN THE CRYSTAL LATTICE
Authors: Aihara Ariyuki , Kitajima Ryoichi , Ota Takeshi 
Published: July 2006

Abstract
A remarkable dielectric absorption has been observed in the polycrystalline sample of iron(II) phosphate at room temperature with the maximum of absorption at about 20 Hz. Electron hopping between two sites in the crystal, i.e., between Fe2+ and Fe3+ ions, is suggested as a possible mechanism of this dielectric absorption.
REVERSIBILITY IN THE HOMOLYTIC AROMATIC SUBSTITUTION WITH SILYL AND GERMYL RADICALS
Authors: Sakurai Hideki , Kira Mitsuo , Sugiyama Hisashi 
Published: July 2006

Abstract
The 3,6-bis(trimethylsilyl)cyclohexadienyl radical (1), generated from the corresponding cyclohexadiene, gave the expected p-bis(trimethylsilyl) benzene (4) at 0°C. At 130°C, however, the reaction afforded trimethylsilylbenzene, 4, and m-bis(trimethylsilyl)benzene in 62, 17, and 5% yield, respectively. The suggested elimination of the trimethylsilyl radical from the cyclohexadienyl radical is demonstrated by ESR.
SWEET TASTING PSEUDO-SUGARS
Authors: Suami Tetsuo , Ogawa Seiichiro , Toyokuni Tatsushi 
Published: July 2006

Abstract
Pseudo-Dl-glucose and pseudo-Dl-galactose, in which the ring-oxygens of pyranoid sugars have been replaced by a methylene group, are equally sweet as their respective true sugars. It has thus been demonstrated that the displacement of the ring-oxygen in a pyranoid sugar by the methylene group affords no prejudicial effect on the sweetness.
KETOEMBLIDE AND SARCOPHYTOLIDE, TWO NEW CEMBRANOLIDES WITH ε-LACTONE FUNCTION FROM THE SOFT CORAL SARCOPHYTA ELEGANS
Authors: Uchio Yasuto , Nitta Masayoshi , Nakayama Mitsuru , Iwagawa Tetsuo , Hase Tsunao 
Published: July 2006

Abstract
Two new cembranolides, ketoemblide and sarcophytolide, with ε-lactone function have been isolated from the soft coral Sarcophyta elegans. The structures were elucidated on the basis of chemical correlation with emblide and spectral data.
THE CHARGE-TRANSFER TRANSITION FOR THE SYMMETRY-FORBIDDEN CHARGE-TRANSFER INTERACTION IN THE CS SYSTEM. 9,10-DIHYDRO-9,10-ETHANO-[1,4]-BIS(DICYANOMETHYLENE)ANTHRACENES
Authors: Yamamura Kimiaki , Nakasuji Kazuhiro , Yamochi Hideki , Murata Ichiro , Inagaki Satoshi 
Published: July 2006

Abstract
Some 9,10-dihydro-9,10-ethano-[1,4]-bis(dicyanomethylene)anthracene derivatives have been synthesized. The substituent effects on the charge-transfer band shifts of these compounds strongly supported our previously proposed argument for the charge-transfer transition for the symmetry-forbidden charge-transfer interaction.
DIANIONS OF β-HYDROXY SULFONES: NEW AND GENERAL APPROACH TO SELECTIVE SYNTHESIS OF 2(5H)-FURANONES
Authors: Tanaka Kazuhiko , Ootake Kazuhiko , Imai Keisuke , Tanaka Nobuo , Kaji Aritsune 
Published: July 2006

Abstract
Dianions derived from β-hydroxy sulfones are highly reactive toward a variety of electrophiles including alkyl halides, carbonyl compounds, and sodium iodoacetate. A convenient synthetic method for 4-alkyl- and 5-alkyl-2(5H)-furanones has been developed by using these dianions. A new synthetic approach to trans-3,4-bis(3-hydroxybenzyl)dihydro-2(3H)-furanone, the first lignan found in humans, via a facile reduction of 2(5H)-furanone with Mg-methanol is also decribed.
RATE FOR PHOTODIMERIZATION OF ETHYL CINNAMATE IN DILUTE SOLUTION
Authors: Shindo Yoichi , Horie Kazuyuki , Mita Itaru 
Published: July 2006

Abstract
Kinetic parameters for photodimerization of ethyl cinnamate were determined in dilute ethanol solution (3∼5×10−5M) where the spontaneous deactivations of excited states proceed much faster than their bimolecular reactions. The quantum yield of cyclodimer formation from excited singlet state, ΦDM′/[C]0 ≅ τMκDM, and that from excited triplet state, ΦISCφDT′/[C]0 ≅ ΦISCτTκDT, are 15 M−1 and 13 M−1, respectively, in ethanol at 30 °C.
PHOTOCHEMISTRY OF 10-ALKYL-10-CARBOMETHOXY-β-IONONE UNDER BASIC CONDITIONS
Authors: Kim Tong Hei , Hayase Yoshio , Isoe Sachihiko 
Published: July 2006

Abstract
Irradiation of 10-alkyl-10-carbomethoxy-β-ionones 1a, b under basic conditions gave 2-oxatricyclo[4,4,0,01.5]-decane derivatives 5a, b; the mechanism involves initial cis–trans isomerization of the C7–C8 double bonds followed by [2+4] cycloaddition reaction and double bonds isomerization.
BIS(DIISOBUTYLALUMINUM) 1,2-ETHANEDITHIOLATE: A REAGENT IN THE CONVERSION OF OXYACETALS TO THIOACETALS
Authors: Satoh TsuyoShi , Uwaya Satoru , Yamakawa Koji 
Published: July 2006

Abstract
Bis(diisobutylaluminum) 1,2-ethanedithiolate (9) made from diisobutylaluminum hydride and ethanedithiol in benzene is useful to convert oxyacetals into thioacetals, however not effective to ketones.
ON THE REACTION OF PRIMARY ALIPHATIC AMINES WITH 1,2-NAPHTHOQUINONE-4-SULFONIC ACID
Authors: Hartke Klaus , Lohmann Ulrike 
Published: July 2006

Abstract
Primary amines react with 1,2-naphthoquinone-4-sulfonic acid to form violet dyes in a complex redox reaction. Their general structure 6 has been established by an independent synthesis.
CYCLOADDITION REACTION OF IMIDAZO[1,2-c]THIAIVZOLE TO ACETYLENIC DIPOLAROPHILES AND NOVEL CONVERSION OF CYCLOADDUCTS INTO 4,9c-DIAZAPENTALENO[1,6a,6 : ab]NAPHTHALENES
Authors: Tsuge Otohiko , Kanemasa Shuji , Hamamoto Takayoshi 
Published: July 2006

Abstract
A nitrogen-bridged tetravalent sulfur compound, 1,3,6-triphenylimidazo[1,2-c]thiaIVzole, reacts with several acetylenic dipolarophiles giving excellent yields of regio- and periselective [3+2] cycloadducts to the azomethine ylide 1,3-dipole of the thiaIVzole. These cycloadducts undergo, in the presence of triethylamine, a rare desulfurization and a subsequent 10π cyclization yielding the derivatives of a new heterocyclic system, 4,9c-diazapentaleno[1,6a,6 :ab]naphthalene.
UTILIZATION OF METHYLTHIOMETHYL p-TOLYL SULFONE IN ORGANIC SYNTHESIS
Authors: Ogura Katsuyuki , Yahata Nobuhiro , Hashizume Kimitoshi , Tsuyama Koichi , Takahashi Kazumasa , Iida Hirotada 
Published: July 2006

Abstract
Methylthiomethyl p-tolyl sulfone was found to be one of the useful reagents for preparation of various organic compounds such as S-methyl α-ketocarbothioates, carboxylic esters, five- and six-membered cycloalkanones, and α-methoxy-α-arylacetic esters.
STEREOSELECTIVE RATE ENHANCEMENT OF MICELLE-CATALYZED HYDROLYSIS OF o-NITROPHENYL-β-d-GLUCOPYRANOSIDE
Authors: Kodaka Masato 
Published: July 2006

Abstract
The rate of hydrolysis of o-nitrophenyl-β-d-glucopyranoside was largely enhanced in the presence of cationic micelle and phenylboronic acid under alkaline conditions, while that of o-nitrophenyl-β-d-galactopyranoside was much less enhanced.
ENZYMIC SYNTHESIS AND CHARACTERIZATION OF SOME NOVEL INDAZOLE NUCLEOTIDES
Authors: Tono-Oka Shuichi , Sekikawa Isao , Azuma Ichiro 
Published: July 2006

Abstract
NADase-catalysed enzymic reaction was successfully applied to the synthesis of some novel β-indazole dinucleotides. Their structures were determined on the basis of UV- and 1H-NMR spectral data. Chemical properties thereof are also described.
9-DIMETHYLAMINO-9,10-DIHYDRO-9,10-ETHENOANTHRACENE N-OXIDE: AN EXAMPLE WHICH SHOWS SLOW INTERNAL ROTATION ABOUT A Nsp3–Csp3 BOND
Authors: Kakizaki Fumihiko , Nakamura Nobuo , Oki Michinori 
Published: July 2006

Abstract
9-Dimethylamino-9,10-dihydro-9,10-ethenoanthracene was prepared by reductive dechlorination of its tetrachloro derivative and was oxidized to produce the title compound. The compound crystallized as an ap conformer. On dissolution, it isomerized to its ±sc conformer with a rate constant 2.52×10−5 s−1 at 30 °C until the equilibrium (±sc/ap=0.16) was reached. The following activation parameters were obtained: ΔH≠ 23.1±4.4 kcal mol−1, ΔS≠ −3.9±14.1 e. u.
SYNTHESES OF AM-TOXIN I ANALOGS CONTAINING A LOWER OR HIGHER HOMOLOG OF l-2-AMINO-5-(p-METHOXYPHENYL)PENTANOIC ACID
Authors: Mihara Hisakazu , Aoyagi Haruhiko , Kato Tetsuo , Ueno Tamio , Izumiya Nobuo 
Published: July 2006

Abstract
Two analogs of AM-toxin I (cyclic tetradepsipeptide), [l-2-amino-4-(p-methoxyphenyl)butanoic acid3]-AM-toxin I and [l-2-amino-6-(p-methoxyphenyl)hexanoic acid3]-AM-toxin I, were synthesized by the conventional method of peptide synthesis. Their weak necrotic activities on apple leaf indicated high importance of the side-chain length of l-2-amino-5-(p-methoxyphenyl)pentanoic acid residue at position 3 in AM-toxin I.
MANGANESE DIOXIDE AS SPECIFIC REDOX CATALYST IN THE PHOTOSENSITIZED OXYGEN GENERATION FROM WATER
Authors: Okuno Yohmei , Yonemitsu Osamu , Chiba Yukihiro 
Published: July 2006

Abstract
Catalytic formation of oxygen from water was observed in the photosensitized reaction by trisbipyridineruthenium(II) using manganese dioxide as a redox catalyst and pentaammine chlorocobalt(III) as an electron acceptor in acidic solution. The β- and “activated” materials are found to be the most efficient and specific redox catalysts, and a 230% of O2 yield based on MnO2 is obtained.
NOVEL 1,2- AND 1,3-DOUBLE CHIRAL RECOGNITIONS. OPTICAL RESOLUTION OF α- AND β-HALOACETYLENIC ALCOHOLS BY COMPLEXATION WITH BRUCINE
Authors: Toda Fumio , Tanaka Koichi , Mori Koji 
Published: July 2006

Abstract
Optical resolution of α- (2,3) and β-haloacetylenic alcohols (13,14) which have two chiral carbons at the 1,2- and 1,3-positions, respectively, was performed efficiently by complexation with brucine. By the same method, α,β-dichloroacetylenic alcohols (8,9) which have three chiral carbons at the 1,2,3-positions were also resolved.
STEREOSPECIFIC REVERSIBLE CYCLOADDITION REACTIONS OF A BIPERIFUNCTIONAL COMPOUND, 1,3,6-TRIPHENYLIMIDAZO[1,2-c]THIAIVZOLE
Authors: Tsuge Otohiko , Kanemasa Shuji , Hamamoto Takayoshi 
Published: July 2006

Abstract
A nitrogen-bridged tetravalent sulfur compound, 1,3,6-triphenylimidazo[1,2-c]thiaIVzole, undergoes highly stereospecific cycloaddition reactions to some acyclic olefinic dipolarophiles giving the [3+2] cycloadducts to the thiocarbonyl ylide of the imidazothiaIVzole in good yields. The formation of the [3+2] cycloadducts is explained to have arisen from the reversible cycloaddition reactions in a concerted manner.
N,N′-BIS(ARYLTHIO)BENZAMIDINYL RADICALS. A NEW CLASS OF PERSISTENT NITROGEN-CENTERED FREE RADICALS
Authors: Miura Yozo , Kunishi Teruo , Kinoshita Masayoshi 
Published: July 2006

Abstract
N,N′-Bis(arylthio)benzamidinyl radicals were generated and studied by ESR spectroscopy. They were extremely persistent in solution, even in the presence of oxygen.
THE 14N, 35Cl, AND 81Br NMR SPECTRA OF SUBSTITUTED PYRIDINIUM CHLORIDES, PERCHLORATES, AND BROMIDES IN AQUEOUS SOLUTION. AN EVIDENCE TO CONTACT ION PAIR FORMATION
Authors: Ogino Jun-ichi , Suezawa Hiroko , Hirota Minoru 
Published: July 2006

Abstract
14N, 35Cl, and 81Br NMR line widths of several chlorides, bromides and perchlorates of 4-substituted pyridinium and related heteroaromatic cations were measured at various concentrations in aqueous solutions. The results were interpreted by assuming the contact ion pair formation, since the calibrated line widths w of halogen nuclei in anions were linearly dependent on the line widths of 14N in respective cations.
REGIOSELECTIVE OXIDATION OF ZIRCONIUM-DIENE AND ALLYLIC ZIRCONIUM COMPLEXES LEADING TO ALLYLIC ALCOHOLS
Authors: Yasuda Hajime , Nagasuna Kinya , Asami Keiichi , Nakamura Akira 
Published: July 2006

Abstract
Oxidation of zirconium-isoprene or α-myrcene complex with aq. H2O2 gave 2-methyl-3-buten-2-ol or linalool, respectively, in good yield. A series of allylic zirconium complexes afforded allylic alcohols, and oxazirconacyclic complexes gave diols by oxidation with H2O2, t-BuOOH, MCPBA or oxygen. Iodination of these complexes was also examined.
CIRCULARLY POLARIZED FLUORESCENCE SPECTRA OF CHOLESTERIC LIQUID CRYSTALS CONTAINING AROMATIC CHROMOPHORES
Authors: Sisido Masahiko , Takeuchi Kazuhiko , Imanishi Yukio 
Published: July 2006

Abstract
Ci rcularly polarized fluorescence (CPF) spectra of guest aromatic molecules embedded in host cholesteric liquid crystals were measured. Such chromophores as tetracene and pyrene showed frequently oscillating CPF spectra which were interpreted in terms of the alternative direction of the fluorescence polarization of vibronic transitions.
A STEREOCONTROLLED SYNTHESIS OF 2-METHYL-2-ALKENENITRILES FROM C-METHYL-C,N-BIS(TRIMETHYLSILYL)KETENIMINE AND ALDEHYDES
Authors: Okada Hisashi , Matsuda Isamu , Izumi Yusuke 
Published: July 2006

Abstract
A stereocontrolled synthesis of 2-methyl-2-alkenenitriles is achieved via the diastereoselective aldol type reaction of C-methyl-C,N-bis(trimethylsilyl)ketenimine with aldehydes in the presence of a mixture of TiCl4 and Ti(O-iPr)4.
ALKALINE FLUORIDE-m-CHLOROPEROXYBENZOIC ACID SYSTEMS AS MODULATED OXIDATION REAGENTS: EPOXIDATION OF α,β-UNSATURATED ACETALS
Authors: Camps Francisco , Coll José , Messeguer Angel , Pujol Ferran 
Published: July 2006

Abstract
High yields (80–96%) of epoxides of α,β-unsaturated acetals can be obtained by the use of suitable KF:NaF:m-CPBA mixtures as modulated oxidation reagents.
SYNTHESIS OF BICYCLO[4.3.1]DEC-2-EN-7-ONE VIA INTRAMOLECULAR [2+2] PHOTOCYCLOADDITION
Authors: Seto Hideharu , Hirokawa Shinya , Fujimoto Yasuo , Tatsuno Takashi 
Published: July 2006

Abstract
An efficient five step synthesis of bicyclo[4.3.1]dec-2-en-7-one by intramolecular [2+2] photocycloaddition of 1-acetoxy-2-(pent-4-enoyl) cyclopentene and subsequent transformation sequence of the resulting cyclobutane derivative is described.
TRANSANNULAR CYCLIZATION OF DICTYODIAL ON SILICA GEL
Authors: Ishitsuka Midori , Kusumi Takenori , Kakisawa Hiroshi 
Published: July 2006

Abstract
Transannular cyclization of dictyodial (1) , catalyzed with silica gel, produces an oxetane (4) besides sanadaol (2) and isosanadaol (5).
ISOLATION AND STRUCTURE OF GYMNOPRENOL-D, A HOMOLOGOUS SERIES OF FULLY HYDRATED POLYISOPRENEPOLYOL FROM GYMNOPILUS SPECTABILIS
Authors: Nozoe Shigeo , Koike Yutaka , Ito Noriie , Kusano Genjiro 
Published: July 2006

Abstract
Gymnoprenol-D, a homologous series of fully hydrated polyisoprenepolyol having a glycerol terminus has been isolated from an hallucinogenic mushroom, Gymnopilus spectabilis along with an analogous compound with one double bond. The structure of these polyols was determined by a combination of chemical degradation and spectroscopic analyses.
STEREOCHEMICAL CHARACTERIZATION OF HYDRATED AND DEHYDRATED CRYSTALS OF N-ACETYLNEURAMINIC ACID AS REVEALED BY THE IR,CD, AND 13C CROSS POLARIZATION-MAGIC ANGLE SPINNING NMR SPECTROSCOPY
Authors: Ogura Haruo , Furuhata Kimio , Saitô Hazime , Izumi Giichi , Itoh Masayoshi , Shitori Yoshiyasu 
Published: July 2006

Abstract
Fine needle (dehydrated) and prism (hydrated) crystals were obtained by changing condition of recrystallization of N-acetylneuraminic acid. The anomeric configuration of both was confirmed as the β-form. We found that local conformation of N-acetyl and glycerol moieties of the fine needles is significantly altered as compared with that of the prisms.
REACTIONS OF A STABLE THIOBENZALDEHYDE WITH ORGANOMETALLICS
Authors: Okazaki Renji , Fukuda Nobuo , Oyama Hiroyuki , Inamoto Naoki 
Published: July 2006

Abstract
Reactions of 2,4,6-tri-t-butylthiobenzaldehyde with Grignard and organolithium reagents gave products via the anion radical of the thioaldehyde. The first example of dimerization of thioketyl radicals was also presented.
NEUROKININ α AND β, SYNTHESIS AND PHARMACOLOGICAL PROPERTIES
Authors: Munekata Eisuke , Okada Masahiro , Kimura Sadao , Sugita Yoshiki , Kanazawa Ichiro , Matsudo Takayuki , Otsuka Masanori 
Published: July 2006

Abstract
Two novel neuropeptides, neurokinin α and β, isolated from porcine spinal cord were chemically synthesized by solution method. The amino acid sequences proposed were confirmed to be correct and pharmacological properties of neurokinin peptides were studied.
THE SYNTHESIS OF REGIO- AND STEREOSPECIFICALLY SUBSTITUTED 1,4-DIENES OR CONJUGATED ENYNES FROM INTERNAL ALKENYLDIALKYLBORANES
Authors: Hoshi Masayuki , Masuda Yuzuru , Nunokawa Yutaka , Arase Akira 
Published: July 2006

Abstract
Internal alkenyldialkylboranes give regio- and stereospecifically designed 1,4-dienes or conjugated enynes, bearing a substituent at the internal alkenyl carbon atom, by a coupling reaction with allyl bromide or 1-bromo-1-alkynes.
ELECTROCHEMICAL REDUCTIVE COUPLING OF ALLYL AND BENZYL HALIDES IN THE PRESENCE OF Cu(acac)2
Authors: Tokuda Masao , Satoh Kuniaki , Suginome Hiroshi 
Published: July 2006

Abstract
The electroreduction of allyl and benzyl bromides takes place at a reduction potential less negative than that of the bromides to give coupling products with enhanced yields if Cu(acac)2 is added to the solution, while the yields of the couplings of allyl- and benzyl chlorides and allyl iodide are unaffected by the addition of Cu(acac)2.
SYNTHESIS OF 2,4-DIACETYL-6-C-β-d-GLUCOPYRANOSYLPHLOROGLUCINOL
Authors: Obara Heitaro , Hattori Masahiko , Matsui Yuzo 
Published: July 2006

Abstract
2,4-Diacetyl-6-C-β-d-glucopyranosylphloroglucinol was directly obtained by the glucosylation of 2,4-diacetylphloroglucinol with 2,3,4,6-tetra-O-acetyl-α-d-glucopyranosyl bromide in the presence of sodium in methanol.
AN IMPROVED ROUTE TO (+)-9(O)-METHANO-Δ6(9α)-PROSTAGLANDIN-I1 (ISOCARBACYCLIN)
Authors: Torisawa Yasuhiro , Okabe Hiromitsu , Shibasaki Masakatsu , Ikegami Shiro 
Published: July 2006

Abstract
An improved synthesis of the title compound and a synthesis of its derivatives are described, in which the regiospecific transformation of the diene into the diol was effectively achieved by using thexylborane.
NIOBIC ACID AS AN EFFICIENT CATALYST FOR VAPOR PHASE ESTERIFICATION OF ETHYL ALCOHOL WITH ACETIC ACID
Authors: Chen Zai-hu , Iizuka Tokio , Tanabe Kozo 
Published: July 2006

Abstract
The niobic acids calcined at moderate temperatures of 120–300 °C showed high catalytic activities (52–75% conv. in 1 h) and selectivities (100%) for the esterification at reaction temperatures of 120–160 °C. No catalyst deactivation was observed even after the use for 60 h. The niobic acid catalysts were more effective than cation exchange resin, SiO2–Al2O3, HZSM-5, and solid super acids such as ZrO2–SO42−, TiO2–SO42−, and Fe2O3–SO42−.
BILAYER FORMATION FROM SINGLE-CHAIN AMMONIUM AMPHIPHILES DUE TO MULTIPLE HYDROGEN BONDING
Authors: Kunitake Toyoki , Yamada Norihiro , Fukunaga Nobuto 
Published: July 2006

Abstract
Stable bilayer assemblies were spontaneously formed in water from single-chain, alkylammonium surfactants which possess multiple hydrogen bonding capacities. The specific component interaction in the bilayer matrix was inferred from the DSC study.
NMR DETECTION OF A HIGHLY CONDUCTIVE PHASE IN A COMPOSITE SOLID ELECTROLYTE LiBr·H2O–Al2O3
Authors: Asai Takeshi , Kawai Shichio 
Published: July 2006

Abstract
Occurrence of a highly conductive phase was confirmed by a 7Li NMR study in a composite solid electrolyte LiBr·H2O–Al2O3. Thickness of an interfacial layer on a dispersed alumina particle was estimated to be 0.2 μm for 3LiBr·H2O–2Al2O3. Changes of the relative intensity in an X-ray diffraction pattern were pointed out.
ENONE FORMATION FROM ALLYL β-KETO ESTERS, ALKENYL ALLYL CARBONATES, SILYL ENOL ETHERS, AND ENOL ACETATES BY THE PHOSPHINE-FREE PALLADIUM CATALYST
Authors: Tsuji Jiro , Minami Ichiro , Shimizu Isao , Kataoka Hideaki 
Published: July 2006

Abstract
The effect of phosphine ligands on the palladium catalyzed enone formation from allyl β-keto esters, alkenyl allyl carbonates, silyl enol ethers, and enol acetates has been reinvestigated, and clean enone formation was observed by a phosphine-free palladium catalyst.
REACTION OF A DIPHOSPHENE WITH BUTYLLITHIUM
Authors: Yoshifuji Masaaki , Shibayama Katsuhiro , Inamoto Naoki 
Published: July 2006

Abstract
1,2-Bis(2,4,6-tri-t-butylphenyl)diphosphene reacted with butyllithium to give 1-alkyl-2 -butyl-1,2 -bis(2,4,6-tri-t-butylphenyl)diphosphanes after quenching with various alkyl halides, sulfurization of which afforded diphosphane monosulfides.
HARD-SOFT AFFINITY INVERSION: DEHALOGENATION OF α-HALOKETONES
Authors: Fuji Kaoru , Node Manabu , Kawabata Takeo , Fujimoto Mayumi 
Published: July 2006

Abstract
Treatment of α-bromo and α-iodoketones with aluminum chloride and ethanethiol gave rise to dithioacetals of the corresponding dehalogenated ketones. α-Chloro and α-fluoroketones were also dehalogenated with the same reagent system through in situ hard-soft affinity inversion.
ESTER ENOLATE CLAISEN REARRANGEMENT OF 2-BUTENYL 3-HYDROXYBUTANOATE
Authors: Fujisawa Tamotsu , Tajima Kazuhisa , Ito Masamichi , Sato Toshio 
Published: July 2006

Abstract
The ester enolate Claisen rearrangement of (E)- or (Z)-2-butenyl 3-hydroxybutanoate was found to give predominantly each one of four isomers of 3-methyl-4-methoxycarbonyl-5-hydroxy-1-hexene by the selection of the reaction conditions via the enolate dianions or silyl ketene acetals.
ROTATIONAL DISTRIBUTION OF CN FRAGMENT PRODUCED BY THE 266 nm PHOTOLYSIS OF ICN IN A SUPERSONIC FREE JET
Authors: Suzuki Toshinori , Ebata Takayuki , Anezaki Yoshikazu , Mikami Naohiko , Ito Mitsuo 
Published: July 2006

Abstract
Rotational distributions of CN(X2Σ+, v″=0) generated by the 266.0 nm photolysis of ICN in a supersonic free jet have been determined by the measurements of the fluorescence excitation spectrum. The distributions are expressed as the sum of three Boltzmann distributions characterized by temperatures of 12, 230, and 2000 K.
COPPER(II)-CATALYZED TRANSAMINATION OF HYDROPHOBIC PYRIDOXAMINE WITH PYRUVIC ACID IN BILAYER MEMBRANE: PHASE TRANSITION EFFECT
Authors: Murakami Yukito , Kikuchi Jun-ichi , Akiyoshi Kazunari 
Published: July 2006

Abstract
The gel–liquid-crystalline phase transition effect on the copper(II)-catalyzed transamination of 2-methyl-3-hydroxy-4-aminomethyl-5-[(N,N-dihexadecylamino)methyl]pyridine with sodium pyruvate was investigated in single-walled bilayer vesicles of N,N-dihexadecyl-Nα-[6-(trimethylammonio)hexanoyl]-l-alaninamide bromide.
TOTAL SYNTHESIS OF SWAINSONINE
Authors: Yasuda Nobuyoshi , Tsutsumi Hideo , Takaya Takao 
Published: July 2006

Abstract
Swainsonine, a potential immunoregulator, was synthesized from d-mannose via an intermediate, methyl 4,8-imino-2,3-O-isopropylidene-4,6,7,8-tetradeoxy-α-d-manno-octopyranoside.
PALLADIUM OR RUTHENIUM CATALYZED REACTION OF α-HALO KETONES WITH TRIBUTYLTIN ENOLATES: PREPARATION OF UNSYMMETRICAL 1,4-DIKETONES
Authors: Kosugi Masanori , Takano Izumi , Sakurai Motoi , Sano Hiroshi , Migita Toshihiko 
Published: July 2006

Abstract
Palladium or ruthenium catalyzed cross-coupling of α-halo ketones with tributyltin enolates gave unsymmetrical 1,4-diketones, The method was applied to the dihydrojasmone synthesis.
pH-RESPONSIVE PERMEATION OF BILAYER-COATED CAPSULE MEMBRANES BY AMBIENT pH CHANGES
Authors: Okahata Yoshio , Seki Takahiro 
Published: July 2006

Abstract
Nylon capsule membranes coated with synthetic bilayers containing an dissociative, cationic head group (2C16-gly-NH3+) were prepared. Permeation through the membrane of a fluorescent probe trapped in the inner aqeous phase was reversibly controlled by pH changes of the outer medium. This pH-sensitive permeation occured only at the temperature above Tc of coating bilayers, but not below their Tc.