bluuebunny/crossref_metadata_2025_split huggingface dataset:
DEFLUORINATIVE COUPLING REACTIONS OF gem-DIFLUOROOLEFINS WITH ORGANOLITHIUM REAGENTS. NOVEL, FACILE METHODS FOR CHAIN ELONGATIONS OF ALDEHYDES LEADING TO AMIDES, ACETYLENES, AND KETONES
Authors: Hayashi Sei-ichi , Nakai Takeshi , Ishikawa Nobuo 
Published: July 2006

Abstract
Three types of coupling reactions of gem-difluoroolefins derived easily from aldehydes with lithium reagents (R′Li and R′2NLi) are described which constitute the facile procedures for conversions of aldehydes (RCHO) to amides (RCH2CONR′2), acetylenes (R–C≡C–R′), and ketones (RCH2COR′).
THE FIRST ISOLATION AND CHARACTERIZATION OF FREE PHENYLAMIDOSULFURIC ACID AND ITS RING-SUBSTITUTED DERIVATIVES. POSTULATED INTERMEDIATES IN THE SULFONATION OF AROMATIC AMINES
Authors: Kanetani Fujio 
Published: July 2006

Abstract
Thirteen free arylamidosulfuric acids were prepared and charactrized for the first time. These acids could readily been obtained in a pure state simply by adding concentrated hydrochloric acid to a cold aqueous solution of the corresponding ammonium salts. These compounds are non-hygroscopic, crystalline solids and quite stable at room temperature under anhydrous conditions. The spectral data clearly showed that all the arylamidosulfuric acids exist as zwitterions, ArNH2+–SO3−, in the solid state.
CRYSTAL SYMMETRY CHANGE OF ZSM-5 BY VARIOUS TREATMENTS
Authors: Nakamoto Hiromi , Takahashi Hiroshi 
Published: July 2006

Abstract
When a SiO2/Al2O3 ratio was higher than about 170, the crystal structure of ZSM-5 changed from orthorhombic to monoclinic symmetry by mere calcination. The monoclinic symmetry remained unchanged by NH4-ion exchange, but the symmetry was reformed to orthorhombic in some of the specimens by protonation. The SiO2/Al2O3 ratio was found to play a major role compared with the Na-content.
A NEW METHOD FOR DETERMINATION OF INTACT OPTICAL PURITY OF PEPTIDES BY USE OF MASS FRAGMENTOGRAPHY
Authors: Kusumoto Shoichi , Matsukura Masayuki , Shiba Tetsuo 
Published: July 2006

Abstract
A novel method was established for the determination of true optical purity of amino acid residues in peptides. Hydrolysis in deuterium chloride followed by mass fragmentographic detection enables very accurate analysis without disturbance by racemization in the hydrolysis procedure.
PHOTOCHEMICAL RING OPENING PATHS OF AZIRINE–AN AB INITIO GVB ENERGY GRADIENT APPROACH
Authors: Kato Shigeki , Morokuma Keiji 
Published: July 2006

Abstract
The energy gradient method with the ab initio GVB wavefunction has been used to trace reaction paths of the photochemical ring opening of azirine. All the geometrical parameters have been optimized as functions of the CNC angle for the four low-lying electronic states. Based on the results, a new reaction mechanism has been suggested.
SYNTHESIS OF A NEW BINUCLEAR COPPER(II) COMPLEX WITH 1,4-BIS [N,N-BIS(3-SALICYLIDENEAMINOPROPYL)AMINOMETHYL]BENZENE AND ITS CATALYTIC ACTIVITY FOR THE OXIDATION OF N,N,N′,N′-TETRA-METHYL-1,4-DIAMINOBENZENE BY DIOXYGEN
Authors: Oishi Naoyasu , Nishida Yuzo , Kida Sigeo 
Published: July 2006

Abstract
A new binuclear copper(II) complex with 1,4-bis[N,N-bis(3-salicylideneaminopropyl)aminomethyl]benzene was prepared and characterized. This complex showed catalytic activity for the oxidation of N,N,N′,N′-tetramethyl-1,4-diaminobenzene by dioxygen in contrast to the inertness of the component mononuclear complex.
HETEROGENEOUS PHOTOCATALYTIC OXIDATION OF AROMATIC COMPOUNDS ON SEMICONDUCTOR MATERIALS: THE PHOTO-FENTON TYPE REACTION
Authors: Fujihira Masamichi , Satoh Yoshiharu , Osa Tetsuo 
Published: July 2006

Abstract
Heterogeneous photocatalytic oxidation of aromatic compounds by H2O2 formed from dissolved O2 in the presence of illuminated TiO2 powders was investigated with reference to the Fenton reaction. All the products expected from the Fenton reaction were obtained. The effect of other semiconductor materials and Fe2+ on the reaction was also investigated.
THE RUTHENIUM COMPLEX CATALYZED REDUCTIVE TRANSFORMATION OF NITROBENZENE. A NOVEL ROUTE TO 2,3-DIALKYLQUINOLINES AND N-ALKYLANILINES USING SATURATED ALCOHOLS
Authors: Watanabe Yoshihisa , Tsuji Yasushi , Suzuki Naoki 
Published: July 2006

Abstract
Nitrobenzene reacts with saturated alcohols in the presence of a catalytic amount of ruthenium complex at 180°C to give 2,3-dialkylquinolines and N-alkylanilines in good yields. The reaction appears to include reduction of nitrobenzene with the alcohols by hydrogen transfer reaction.
HIGHLY POLARIZED TROPONES. 9H-AZULENO[1,2,3-ij]NAPHTHALEN-9-ONE AND 8H-AZULENO[1,2,3-ij]NAPHTHALEN-8-ONE
Authors: Yamamoto Kagetoshi , Matsue Yuji , Murata Ichiro 
Published: July 2006

Abstract
9H-Azuleno[l,2,3-ij]naphthalen-9-one (3a) and 8H-Azuleno [1,2 , 3-ij]naphthalen-8-one (3b), consisting of tropone and acenaphthylene have been synthesized. These ketones were found to be highly polarized and highly basic compounds.
SYNERGISTIC EFFECT OF TRIOCTYLPHOSPHINE OXIDE AND DIBENZO-18-CROWN-6 ON THE EXTRACTION OF SILVER(I) AS PICRATE
Authors: Hasegawa Yuko , Suzuki Koji , Sekine Tatsuya 
Published: July 2006

Abstract
Solvent extraction of silver(I) with dihenzo-18-crown-6 (E) as ion-pairs with picrate ion (A−) into chloroform was found to be synergistically enhanced by trioctylphosphine oxide (TOPO). This was concluded to be due to an adduct formation of the cationic silver(I) complex with TOPO, AgE(topo)2+, in this organic solvent.
THE STRUCTURES OF BOTH THE KINETIC AND THE THERMODYNAMIC ISOMERS OF 1,4,8,11-TETRAAZACYCLOTETRADECANESILVER(II) PERCHLORATE AS DETERMINED BY X-RAY ANALYSES
Authors: Ito Tasuku , Ito Haruko , Toriumi Koshiro 
Published: July 2006

Abstract
The title compound obtained initially from the reaction mixture has a basket type configuration, but successive slow recrystallizations from weakly acidic aqueous solution resulted in structural isomerization to a thermodynamically more stable structure.
HIGH-PRESSURE SYNTHESIS AND CHARACTERIZATION OF EUROPIUM(II) METASILICATE, EuSiO3
Authors: Machida Ken-ichi , Adachi Gin-ya , Shiokawa Jiro , Shimada Masahiko , Koizumi Mitsue , Suito Kaichi , Onodera Akifumi 
Published: July 2006

Abstract
The high-pressure polymorphism of EuSiO3 was studied up to a pressure of 80 kb at 1000–1400°C. Two high-pressure phases were obtained in addition to the atmospheric one: α-EuSiO3 was transformed into δ and δ′ forms at about 60 and 70 kb, respectively. Their crystal data were determined by means of X-ray diffraction analyses.
ONE STEP SYNTHESIS OF α-AMINOALKYLFURANS AND ITS APPLICATION TO A FACILE SYNTHESIS OF PYRIDOXINE (VITAMIN B6)
Authors: Shono Tatsuya , Matsumura Yoshihiro , Tsubata Kenji , Takata Jiro 
Published: July 2006

Abstract
One step synthesis of α-aminoalkylfurans was achieved by the reaction of α-methoxyurethanes or α-methoxyamides with furan. This method was applied to an efficient synthesis of pyridoxine.
FACILE SYNTHESIS OF BENZYL KETONES BY THE REDUCTIVE COUPLING OF BENZYL BROMIDE AND ACYL CHLORIDES IN THE PRESENCE OF A PALLADIUM CATALYST AND ZINC POWDER
Authors: Sato Toshio , Naruse Kouichi , Enokiya Masashi , Fujisawa Tamotsu 
Published: July 2006

Abstract
Benzyl ketones were obtained in good yields from benzyl bromide and acyl chlorides by the combined use of Zn and a palladium catalyst under mild conditions.
N-ALKYLATION OF AMIDES AND N-HETEROCYCLES WITH POTASSIUM FLUORIDE ON ALUMINA
Authors: Yamawaki Junko , Ando Takashi , Hanafusa Terukiyo 
Published: July 2006

Abstract
Alumina coated with potassium fluoride promotes smooth N-alkylation of carboxamides, lactams, and other N-heterocycles with alkyl halides or dialkyl sulfate under mild conditions.
SYNTHESES OF SOME POLYMERIC DYES AND SENSITIZED PHOTOELECTRODE PROCESSES BY THE POLYMER-COATED ELECTRODES
Authors: Morishima Yotaro , Isono Masanao , Itoh Yoshihiro , Nozakura Shun-ichi 
Published: July 2006

Abstract
Merocyanine (Mc) and rhodamine B (Rh) were incorporated into polyethylenimine (PEI) and poly(vinyl alcohol) (PVA) by using diethylphosphoryl cyanide or 1-methyl-2-chloropyridinium iodide as the coupling reagents. Under the illumination of visible light, SnO2 OTE (Optically Transparent Electrode) coated with PEI-Rh film exhibited remarkable spectrally sensitized photocurrent, and Pt electrodes coated with PVA-Mc and PEI-Mc films showed photocathodic currents.
SYNTHESIS AND VALENCE BOND ISOMERIZATION OF CYCLOOCTA[d]TROPOLONE
Authors: Oda Mitsunori , Morita Noboru , Asao Toyonobu 
Published: July 2006

Abstract
Cycloocta[d]tropolone (4) was synthesized by hydrolysis of an adduct of 1H-cyclopentacyclooctene and dichloroketene. The tropolone was found to exist as a mixture of valence bond isomers (4a) and (4b).
ACTIVATION OF POLYHALOALKANES BY PALLADIUM CATALYST. PALLADIUM CATALYZED OXIDATION OF ALCOHOLS TO CARBONYL COMPOUNDS WITH CARBON TETRACHLORIDE
Authors: Nagashima Hideo , Tsuji Jiro 
Published: July 2006

Abstract
Pd(OAc)2 and PdCl2 are good catalyst for the oxidation of alcohols to carbonyl compounds with CCl4, in the presence of bases. Primary and secondary alcohols are oxidized to esters and ketones in high yields, respectively.
SYNTHESES OF SOME NEW LIGANDS CONTAINING IMIDAZOLES AND REVERSIBLE OXYGENATION OF THE COBALT(II) COMPLEXES
Authors: Takano Shigeru , Yano Yumihiko , Tagaki Waichiro 
Published: July 2006

Abstract
Tri, tetra, and pentadentate ligands containing imidazole groups were prepared and the oxygenation of their cobalt(II) complexes was briefly investigated.
A NEW ALDOL REACTION: A METHOD FOR THE GENERATION OF VINYLOXYBORANES BY THE ACYLATION OF BORON-STABILIZED CARBANIONS
Authors: Mukaiyama Teruaki , Murakami Masahiro , Oriyama Takeshi , Yamaguchi Masahiko 
Published: July 2006

Abstract
Phenyl-substituted vinyloxyboranes are generated by the acylation of boron-stabilized carbanions with methyl benzoate. Vinyloxyboranes thus generated further react with aldehydes to give the corresponding cross-aldols in good yields.
NOVEL REACTIONS OF BENZOTHIAZOLIUM N-PHENACYLIDE WITH METHYLENECYCLOPROPENES
Authors: Tsuge Otohiko , Shimoharada Hiroshi , Noguchi Michihiko 
Published: July 2006

Abstract
Benzothiazolium N-phenacylide reacted with methylenecyclopropenes having an acyl group on the 4-position to give 3a,11a-dihydro-5aH-furo[3′,2′:2,3]pyrido[6,1-b]benzothiazole derivative via an intermediary 3-butadienylbenzothiazolium betaine. The reaction of the ylide with a methylenecyclopropene bearing two cyano groups on the 4-position in THF gave a cyclobutane together with benzothiazole, whereas a 3-butadienyl-2-ethoxybenzothiazoline derivative was obtained in the reaction in EtOH.
DETERMINATION OF THE REARRANGEMENT ENERGY BY USING TUNNEL ELECTRODE
Authors: Kobayashi Kenkichiro , Aikawa Yoshihiro , Sukigara Mitsunori 
Published: July 2006

Abstract
An expression of the potential dependence of cathodic current at an n-type semiconductor tunnel electrode is derived. By applying a tunnel electrode, the rearrangement energy can be determined without ambiguity from the plot of the transfer coefficient against electrode potential.
NEW 1,3-DIPOLAR CYCLOADDITION LEADING TO 2,5-DIHYDROPYRROLE AND PYRROLIDINE DERIVATIVES
Authors: Achiwa Kazuo , Sekiya Minoru 
Published: July 2006

Abstract
A novel 1,3-cycloaddition of intermediaries derived from N-(benzylidene)trimethylsilylmethylamine and acyl chlorides to conjugated olefins and acetylenes gave pyrrolidine and 2,5-dihydropyrrole derivatives, respectively.
NEW ZINC PROMOTED SYNTHETIC REACTION OF γ-BUTYROLACTONE DERIVATIVES
Authors: Shono Tatsuya , Hamaguchi Hiroshi , Nishiguchi Ikuzo , Sasaki Manji , Miyamoto Tetsuya , Miyamoto Masatoshi , Fujita Shumei 
Published: July 2006

Abstract
Some γ-butyrolactone derivatives have been synthesized by the reaction of dimethyl maleate with carbonyl compounds in the presence of active zinc compound.
THE STRUCTURES OF DITERPENE GLYCOSIDES, SHIKOKIASIDE A AND B
Authors: Isobe Takahiko , Noda Yukinao , Shibata Kozo , Kubota Takashi 
Published: July 2006

Abstract
The structures of two new diterpene glycosides, shikokiaside A and B, isolated from Rabdosia shikokiana var shikokiana were elucidated, respectively, by chemical and spectroscopic data.
MERCURY- AND CADMIUM-PHOTOSENSITIZED REACTIONS OF γ-BUTYROLACTONE
Authors: Yamamoto Shunzo , Matsuda Shuzo , Ozaki Chihiro , Nishimura Norio 
Published: July 2006

Abstract
The mercury- and cadmium-photosensitized reactions of γ-butyrolactone have been studied. The gaseous products obtained in the mercury-photosensitized reaction were carbon dioxide, cyclopropane, and propylene. On the other hand, the products obtained in the cadmium-photosensitized reaction were carbon monoxide and ethylene.
ONE-POT SYNTHESIS OF α-FLUORO-α,β-UNSATURATED ESTERS FROM CHLOROMALONIC ESTER AND CARBONYL COMPOUNDS USING “SPRAY-DRIED” POTASSIUM FLUORIDE
Authors: Kitazume Tomoya , Ishikawa Nobuo 
Published: July 2006

Abstract
α-Fluoro-α,β-unsaturated esters were prepared by one-pot reaction between aldehydes or ketones and diethyl chloromalonate in the “spray-dried” potassium fluoride–sulfolane system.
RE-EXAMINATION ON BROMINATION OF SUBSTITUTED BIPHENYLENES. FORMATION OF BENZOCYCLOOCTATETRAENE DERIVATIVES
Authors: Kidokoro Hiroto , Sato Masaru , Ebine Seiji 
Published: July 2006

Abstract
The bromination products of 2-methoxy- and 2-acetamido-3-bromobiphenylenes were not the biphenyl derivatives (3a) and (3b), which were previously assigned by McOmie et al,, but the benzocyclooctatetraene derivatives (2a) and (2b), respectively.
THE CONCEPT OF “SURFACE-TRAPPED HOLE” AS AN INTERMEDIATE OF ANODIC REACTION OF A GALLIUM PHOSPHIDE SEMICONDUCTOR ELECTRODE
Authors: Nakato Yoshihiro , Tsumura Akira , Tsubomura Hiroshi 
Published: July 2006

Abstract
The concept of “surface-trapped hole”, acting as a precursor in various photoanodic processes, is proposed on the experimental basis of the surface band energy and electroluminescence of GaP in contact with redox solutions.
HIGHLY ACTIVE Ag/C ELECTRODE FOR OXYGEN DEPOLARIZED CHLOR-ALKALI ELECTROLYTIC CELL
Authors: Miura Norio , Gomyo Kazuyuki , Yamazoe Noboru , Seiyama Tetsuro 
Published: July 2006

Abstract
The polytetrafluoroethylene-bonded carbon electrode on which silver was loaded by “ion exchange method” gave 300 mA/cm2 at −0.12 V (vs. Hg/HgO) for the reduction of oxygen in 9 mol/dm3 NaOH at 80 °C, and it may be useful for the oxygen depolarized chlor-alkali electrolytic cell. The high activity of the electrode was found to come from the fine dispersion of silver and the oxidation-treatment of carbon surface.
TWO NEW PYRONES, METABOLITES OF PENICILLIUM CITREO-VIRIDE BIOURGE
Authors: Niwa Masatake , Endo Tetsuji , Ogiso Shigeki , Furukawa Hideyuki , Yamamura Shosuke 
Published: July 2006

Abstract
Two new pyrones, citreoviridinol and secocitreoviridin, have been isolated from the yellow rice, and their structures also been elucidated on the basis of their spectral data.
SYNTHETIC UTILITY OF A FLUORINE-FACILITATED CLAISEN REARRANGEMENT: A NOVEL SYNTHETIC METHOD FOR 2,4-ALKADIENOIC ACIDS USING 2,2,2-TRIFLUOROETHYL PHENYL SULFOXIDE
Authors: Nakai Takeshi , Tanaka Kiyoshi , Ogasawara Kyo , Ishikawa Nobuo 
Published: July 2006

Abstract
A novel synthetic method for 2,4-alkadienoic acids from allylic alcohols and 2,2,2-trifluoroethyl phenyl sulfoxide is described which involves the in situ Claisen rearrangement facilitated by the fluorine. This method was applied to the stereocontrolled synthesis of pellitorine, a natural insecticide.
SYNTHESIS OF NdAl3(BO3)4 CRYSTALS FROM HIGH-TEMPERATURE SOLUTIONS
Authors: Tate Isao , Oishi Shuji 
Published: July 2006

Abstract
By slow cooling method NdAl3(BO3)4 crystals were grown from the high-temperature solutions of the five-component system Nd2O3–Al2O3–B2O3–K2CO3–MoO3 where Nd2O3 and B2O3 were contained in excess of the stoichiometric composition. The grown crystal with hexagonal rod shape were up to 6x1x1 mm in size, bluish purple in color and transparent.
NEW PHOTOMETRIC REAGENTS FOR ALKALI METAL IONS BASED ON CROWN ETHER COMPLEX FORMATION
Authors: Nakamura Hiroshi , Sakka Hideo , Takagi Makoto , Ueno Keihei 
Published: July 2006

Abstract
Two chromogenic crown ethers, N-(2-hydroxy-5-nitrobenzyl)-aza-15-crown-5(1) and N-(2-hydroxy-5-nitrobenzyl)-aza-18-crown-6(2), were synthesized for the extraction photometry of alkali metal ions. The extraction selectivity followed the order: 1, Li+&gt;Na+&gt;K+&gt;&gt;Rb+, Cs+ and 2, K+&gt;Na+&gt;Rb+&gt;Li+&gt;Cs+. 1 is useful for determining 10–100 ppm Li+ as well as for concentrating Li+ from a dilute solution.
TEMPERATURE PROGRAMMED DESORPTION OF CARBON MONOXIDE ADSORBED ON MAGNESIUM OXIDE
Authors: Hattori Hideshi , Imai Hisaya , Itoh Hidenobu 
Published: July 2006

Abstract
The nature of adsorbed CO on MgO was investigated by temperature programmed desorption technique. Magnesium oxide outgassed at 500°C gave one desorption peak at 190°C while MgO outgassed at 1000°C gave two distinctive desorption peaks at 185°C and 300°C. Carbon-13 labeled study indicates that two types of the adsorbed species on MgO outgassed at 1000°C do not exchange each other.
ELECTROPHILIC ADDITION REACTIONS TO PHENYLACETYLENE CATALYZED BY HETEROPOLY ACID
Authors: Matsuo Kazuhiro , Urabe Kazuo , Izumi Yusuke 
Published: July 2006

Abstract
Heteropoly acid efficiently catalyzed the addition reactions of water and carboxylic acid to phenylacetylene to form acetophenone at 60°C in the liquid phase. The higher catalytic activity of heteropoly acid compared with H2SO4 and HClO4 is due to the cooperative action of heteropoly anion.
A SIMPLE AND CONVENIENT METHOD FOR PREPARING DI-t-BUTYLSILANES
Authors: Watanabe Hamao , Ohkawa Tadashi , Muraoka Tsutomu , Nagai Yoichiro 
Published: July 2006

Abstract
Silicon functional di-t-butylsilanes such as (t-Bu)2SiCl2, (t-Bu)2Si(OMe)2 and (t-Bu)2SiH(OMe) were conveniently obtained in good yields via di-t-butylsilane, (t-Bu)2SiH2, which can readily be prepared from the reaction of dichlorosilane, H2SiCl2, with t-butyllithium.
ABSOLUTE CONFIGURATIONS OF QUERCUS LACTONES, (3S,4R)- AND (3S,4S)-3-METHYL-4-OCTANOLIDE, FROM OAK WOOD AND CHIROPTICAL PROPERTIES OF MONO-CYCLIC γ-LACTONES
Authors: Masuda Masahiro , Nishimura Ki-i-chi 
Published: July 2006

Abstract
Absolute configurations of Quercus lactones were investigated by studying paramagnetic shifts of PMR spectra and the chemical correlation with 2-hydroxyhexanoic acid of known configuration. Chiroptical properties of several mono-cyclic γ-lactones were also studied.
INTRAMOLECULAR ANIONIC CYCLIZATIONS OF o-CINNAMYLOXY- AND o-PHENYLPROPARGYLOXYBENZYLIDENEAMINES
Authors: Tsuge Otohiko , Ueno Kazunori , Oe Koji 
Published: July 2006

Abstract
The intramolecular anionic cyclization of o-cinnamyloxybenzylideneamines proceeded via an allyl anion and/or an azaallyl anion to give a mixture of 2,3-dihydrobenzofurans and/or a perhydropyrro[3,2-c]benzopyrane. In a similar reaction o-phenylpropargyloxybenzylideneamines gave 2,3-dihydrobenzofurans and/or a benzooxepine derivative exclusively via a propargyl anion. It was revealed that the relative yields of the products were dependent on the nature of amines in imines.
REGIO- AND STEREOCONTROLLED SYNTHESIS OF ALLYLIC p-TOLYL SULFONES CATALYZED BY PALLADIUM (0) COMPLEX
Authors: Inomata Katsuhiko , Yamamoto Taku , Kotake Hiroshi 
Published: July 2006

Abstract
The reaction of allyl esters with sodium p-tolylsulfinate in tetrahydrofuran and methanol catalyzed by Pd(PPh3)4 gave the regio- and stereocontrolled allylic p-tolyl sulfones in good yields at room or lower temperature.
Pd(II)-CATALYZED 1,3-ALKYL MIGRATION OF 1-ALKENYL ETHYL ACETALS. PREPARATION OF α-ALKYLATED (E)-α,β-UNSATURATED CARBONYL COMPOUNDS
Authors: Takahashi Mitsuru , Ishii Norio , Suzuki Hiroharu , Moro-Oka Yoshihiko , Ikawa Tsuneo 
Published: July 2006

Abstract
Palladium(II) complexes, such as (CH3CN)2PdCl2 and (diene)PdCl2, catalyze 1,3-alkyl migration of 1-alkenyl ethyl acetals and subsequent elimination of ethanol to give α-alkylated (E)-α,β-unsaturated carbonyl compounds in excellent yields.
Cu(II) ION TRANSFER FROM PEPTIDES TO CYSTEINE. FORMATION OF THE TERNARY COMPLEX, (CYSTEINE)-Cu(II)-(PEPTIDE), AS AN INTERMEDIATE
Authors: Hanaki Akira 
Published: July 2006

Abstract
The transfer of Cu(II) ion from glycine peptides to cysteine was studied by a stopped-flow spectrophotometric method. The first reaction is the ligand substitution of Cu(II)-peptide, Cu(H−2peptide)−, by cysteine forming the ternary complex, (cysteine)Cu(H−1peptide)2−. The subsequent reaction is the nucleophilic attack of cysteine upon the ternary complex producing Cu(II)-biscysteinate. The rate of those reactions depends on the steric factors around the metal site.
SUBSTRATE ENTRAPMENT AND FORMATION OF pH GRADIENT IN AMMONIUM BILAYER VESICLES
Authors: Kunitake Toyoki , Okahata Yoshio , Yasunami Shoichiro 
Published: July 2006

Abstract
Trapping of water-soluble amines in the inner water core of ammonium bilayer vesicles was determined by reaction with fluorescamine, and the formation of pH gradient was confirmed by fluorescence quenching of membrane-bound riboflavin.
UNUSUAL PHOTOCHEMICAL REDUCTION AND DEACYLATION OF NAPHTHYL KETONES INCORPORATED IN A TRIPTYCENE SKELETON
Authors: Iwamura Michiko , Asano Tadahiko , Tanaka Yoshio , Iwamura Hiizu 
Published: July 2006

Abstract
In contrast with the photochemical inertness of acetonaphthones, irradiation of the 5-acetyl, propionyl, butyryl, and decanoyl derivatives of 7,12-dihydro-7,12-(o-benzeno)benz[a]anthracene in methanol gave the corresponding reduction products and the deacylation product in efficiency of 0.02–0.05.
SOLVENT EFFECT IN THE REACTION OF (S)-N-ISOPROPYL-(Nα-BENZYLOXY CARBONYL)PROLINAMIDE WITH LITHIUM ALUMINUM HYDRIDE
Authors: Kiyooka Syun-ichi , Goto Fumitaka , Suzuki Kojiro 
Published: July 2006

Abstract
A specific solvent effect in the reduction of (S)-N-isopropyl-(Nα-benzyloxycarbonyl)prolinamide with lithium aluminum hydride. The reactions in diethyl ether gave mainly (S)-N-isopropyl-(Nα-methyl)prolinamide and (2S)-N-methyl-2-[(isopropylamino)methyl]pyrrolidine, while 3-isopropyl-2-oxo-1,3-diazabicyclo[3.3.0]oct-4-ene and (5S)-3-isopropyl-l,3-diazabicyclo [3.3.0]octane were produced in tetrahydrofuran.
PHOTOSENSITIZED ELECTRON TRANSPORT IN THE ASYMMETRICAL VESICLES INCORPORATING A SURFACE-ACTIVE ZINC PORPHYRIN AND AN ELECTRON MEDIATOR
Authors: Katagi Toshiyuki , Yamamura Takeshi , Saito Taro , Sasaki Yukiyoshi 
Published: July 2006

Abstract
Photosensitized electron transport from ethylenediaminetetraacetic acid disodium salt (EDTA·2Na) or sodium ascorbate (Asc·Na) to methylviologen (MV++) across vesicle membranes of dipalmitoyl-l-α-phosphatidylcholine (DPPC) which incorporate 5,10,15-tris(1-methylpyridinium-4-yl)-20-[4-(octadecyloxy)phenyl]porphinatozinc(II) trichloride (Zn–P) asymmetrically (only on the outer side of the membrane) is facilitated by an electron mediator such as ubiquinone Q10 (UQ10) or tetraphenylporphine (TPP). Zn–P plays an important role in the redox reaction at the interface of the vesicles and the efficiency can be correlated with the redox potentials of the mediators.
A NOVEL METHOD FOR THE SYNTHESIS OF 2,2,2-TRIBROMOETHANOLS FROM ALDEHYDES AND CARBONTETRABROMIDE IN THE PRESENCE OF STANNOUS FLUORIDE —A SYNTHESIS OF DIACETYL-d-ERYTHRONOLACTONE—
Authors: Mukaiyama Teruaki , Yamaguchi Masahiko , Kato Jun-ichi 
Published: July 2006

Abstract
In the presence of stannous fluoride, 2,2,2-tribromoethanols are conveniently prepared from aldehydes and carbontetrabromide under a mild reaction condition. The reaction is efficiently applied to the synthesis of 2,3-diacetyl-d-erythronolactone starting from 2,3-O-isopropylidene-d-glyceraldehyde.
COPPER(I) IODIDE-FACILITATED NUCLEOPHILIC SUBSTITUTIONS OF NONACTIVATED ARYL IODIDES WITH ARENESELENOLATES
Authors: Suzuki Hitomi , Abe Hisako , Osuka Atsuhiro 
Published: July 2006

Abstract
Nonactivated aryl iodides readily react with areneselenolates, in the presence of copper(I) iodide, in hexamethylphosphoric triamide to produce the corresponding diaryl selenides in good yields.