bluuebunny/crossref_metadata_2025_split huggingface dataset:
SYNTHESIS OF 1-O-β-d-GLUCOPYRANOSYL-1l-(1,3,4/2,6)-4-AMINO-6-HYDROXYMETHYL-1,2,3-CYCLOHEXANETRIOL. ON THE STRUCTURE OF THE ANTIBIOTIC, VALIDAMYCIN A
Authors: Ogawa Seiichiro , Chida Noritaka , Suami Tetsuo 
Published: July 2006

Abstract
1-O-β-d-Glucopyranosyl-1l-(1,3,4/2,6)-4-amino-6-hydroxymethyl-1,2,3-cyclohexanetriol (12) was synthesized and found to be identical with β-d-glucopyranosyl-validamine derived from validamycin A. The position at which validamine moiety was substituted with d-glucopyranose was revised to C-l on the basis of the present synthesis.
NOVEL E–Z EQUILIBRIUM OF N-ALKYL-α-ALKOXYCARBONYLNITRONE IN SOLUTION
Authors: Inouye Yoshinobu , Hara Junko , Kakisawa Hiroshi 
Published: July 2006

Abstract
Four N-alkyl-α-alkoxycarbonylnitrones were prepared and their NMR spectra in C6D6, CDCl3, or CD3SOCD3 were measured. From the analyses of the spectra, it was found that the nitrones exhibited a facile equilibrium in all solvents used and E/Z ratio in equilibrium depended largely on the polarity of the solvent.
TRIPLET BENZENE-SENSITIZED CYCLOREVERSION OF ARYLCYCLOBUTANE
Authors: Kitamura Takashi , Toki Susumu , Takamuku Setsuo , Sakurai Hiroshi 
Published: July 2006

Abstract
γ-Radiolysis of triphenylcyanocyclobutane (1) in benzene forms stilbene, cinnamonitrile and a stereo isomer of 1. The effect of additives and the kinetic treatment show that the cycloreversion of 1 proceeds by benzene triplet sensitization. Spectroscopic measurement in pulse radiolysis suggests the existence of 1,4-biradical as an intermediate.
ALBANINS F AND G, NATURAL DIELS–ALDER ADDUCTS FROM MULBERRY
Authors: Takasugi Mitsuo , Ishikawa Shin-ichi , Nagao Shigemitsu , Masamune Tadashi , Shirata Akira , Takahashi Kokichi 
Published: July 2006

Abstract
The structure elucidation of albanins F and G, two of the pre-existing antifungal principles of shoot epidermis of mulberry, is described.
STRUCTURES OF EFFUSANINS, ANTIBACTERIAL DITERPENOIDS FROM RABDOSIA EFFUSA
Authors: Fujita Tetsuro , Takeda Yoshio , Shingu Tetsuro , Ueno Akira 
Published: July 2006

Abstract
Five new diterpenoids, effusanin A, B, C, D and E with antibacterial activity were isolated from the stem and leaves of Rabdosia effusa and their structures were deduced from chemical and spectral findings.
KINETIC STUDIES OF THE INTERACTION BETWEEN SILVER ION AND DEOXYRIBONUCLEIC ACID
Authors: Yakabe Yoshikuni , Sano Takayuki , Ushio Hidetoshi , Yasunaga Tatsuya 
Published: July 2006

Abstract
The interactions between silver ion and DNA were studied kinetically by the stopped flow method. The experimental results show that the reaction between silver ion and GC base pair of DNA proceeds by two steps and that between silver ion and AT base pair of DNA with one step.
SYNTHESIS OF dl-SEPTICINE
Authors: Iwashita Takashi , Suzuki Masahiro , Kusumi Takenori , Kakisawa Hiroshi 
Published: July 2006

Abstract
Cycloaddition reaction of 1-pyrroline 1-oxide with 2,3-bis(3,4-dimethoxyphenyl)butadiene proceeded regioselectively to give two stereoisomeric isoxazolidine derivatives, one of which was converted into septicine by three-step reactions.
NMR SPECTROSCOPIC BEHAVIOR OF THE COMPLEXES OF SOME POLYETHYLENE GLYCOL DERIVATIVES WITH ALKALI IONS
Authors: Hiratani Kazuhisa , Aiba Seiichi , Nakagawa Tsutomu 
Published: July 2006

Abstract
Four triethylene glycol derivatives, which have different end substituents, quinolyl and ortho-substituted phenyl groups, were synthesized in good yields.
The proton NMR spectrum of these compounds and their complexes with alkali and ammonium ions was measured to show that these compounds exhibit complexation specificity for sodium ion. On complexation, these acyclic polyethers are considered to wrap adequately themselves around sodium ion like a pseudocyclic species.
A USEFUL METHOD FOR SELECTIVE ACYLATION OF ALCOHOLS USING 2,2′-BIPYRIDYL-6-YL CARBOXYLATE AND CESIUM FLUORIDE
Authors: Mukaiyama Teruaki , Pai Fong-Chang , Onaka Makoto , Narasaka Koichi 
Published: July 2006

Abstract
Primary and secondary alcohols are acylated under mild conditions by the use of 2,2′-bipyridyl-6-yl carboxylates and cesium fluoride. Furthermore, the reaction is successfully applied to selective acylation of a primary carbinol group of diols containing primary and secondary carbinol groups or exclusive O-acylation of aromatic amino alcohols.
ESR STUDIES OP THE ALKALI METAL COMPLEXES OF GALVINOXYL-LABELED-BENZO-15-CROWN-5
Authors: Mukai Kazuo , Iida Nobuhito , Kumamoto Yoshiko , Kohama Hiroyuki , Ishizu Kazuhiko 
Published: July 2006

Abstract
A galvinoxyl derivative of benzo-15-crown-5 (1) has been synthesized, and the complex formation between the spin labeled crown ether (1) and the alkali metal thiocyanate has been studied by ESR measurement. A typical triplet ESR spectrum was observed for the potassium complex in ethanol rigid matrix at 77 K, clearly indicating the (1:2) complex formation between the KNCS salt and the 1. On the other hand, the sodium complex showed a symmetrical single line, suggesting the (1:1) complex formation between the NaNCS salt and the 1.
6R-TYPE OF Ti2S3 SYNTHESIZED IN AN H2S–H2 ATMOSPHERE
Authors: Onoda Mitsuko , Saeki Masanobu 
Published: July 2006

Abstract
A new type of Ti2S3 was prepared by reducing TiS2 in an H2S–H2atmosphere at 600°C. The structure is proposed to be of 6R-type, being composed of cubic-close-packed sulfur layers as well as the fully and partially occupied titanium layers. The ordering of titanium vacancies was suggested.
CRYSTAL AND MOLECULAR STRUCTURE OF PALYTHENE POSSESSING A NOVEL 360 NM CHROMOPHORE
Authors: Uemura Daisuke , Katayama Chuji , Wada Akio , Hirata Yoshimasa 
Published: July 2006

Abstract
Crystal and molecular structure of palythene isolated from Palythoa tuberculosa (Coelenterata) was unambiguously determined by X-ray analysis including its absolute configuration. The structure of palythene was defined as an inner salt and then features of delocalization of the positive charge were elucidated.
CONVENIENT PREPARATION OF 1,2-CYCLOHEXANEDIONES
Authors: Utaka Masanori , Matsushita Seishiro , Takeda Akira 
Published: July 2006

Abstract
1,2-Cyclohexanedione and 3-alkyl-l,2-cyclohexanediones were prepared in good to excellent yields from the corresponding 2 ,6-dibromocyclohexanones by treatment with aqueous NaOH.
2,3-DIMETHYL-4-METHOXYBUTENOLIDES FROM RED ALGAE, COELOSEIRA PACIFICA AND AHNFELTIA PARADOXA
Authors: Nomura Yukihiro , Kusumi Takenori , Ishitsuka Midori , Kakisawa Hiroshi 
Published: July 2006

Abstract
Three new butenolide derivatives were isolated from the red algae, C. pacifica and A. paradoxa. The structures of these compounds were determined from their spectral properties, one of which was confirmed by synthesis.
SYNTHESIS AND CHIROPTICAL PROPERTIES OF AN OPTICALLY ACTIVE DOUBLY BRIDGED ALLENE. [8][10]SCREW[2]ENE
Authors: Nakazaki Masao , Yamamoto Koji , Maeda Miharu 
Published: July 2006

Abstract
The dichlorocyclopropane derivative 6 prepared from 5 was treated with (−)-sparteine modified butyllithium to afford (+)-(R)-[8][10] doubly bridged allene (4) whose absolute configuration was assigned by its CD analysis.
A NEW METHOD FOR ACYLATION OF ENOLATES BY MEANS OF DIALKYL ACYLPHOSPHONATES AS ACYLATING AGENTS
Authors: Sekine Mitsuo , Kume Akiko , Nakajima Masashi , Hata Tsujiaki 
Published: July 2006

Abstract
Acylations of various enolates by means of diethyl acylphosphonates were described. For the acylation of acetophenone, lithium bis(trimethylsilyl)amide (LSA) was found to be suitable as the base. The scope and limitation of the benzoylation using diethyl benzoylphosphonates were also described.
TWO NEW CLERODANE DITERPENOIDS FROM AJUGA REPTANS (LABIATAE)
Authors: Camps Francisco , Coll José , Cortel Adolfo 
Published: July 2006

Abstract
Ajugareptansone A and B, 2 and 3, two new neo-clerodane diterpenoids have been isolated from Ajuga reptans, and their structures have been elucidated by spectral methods and X-ray diffraction analysis. Under conditions used for isolation and purification of these compounds, formation of 3 from 2 has been observed.
A NOVEL TYPE OF BRIDGING OF THE β-DIKETONATE DIANIONS BETWEEN TWO PALLADIUM(II) ATOMS: η3-COORDINATION AND O,O′-CHELATION
Authors: Otani Yukie , Nakamura Yukio , Kawaguchi Shinichi , Okeya Seichi , Hinomoto Tetsu 
Published: July 2006

Abstract
Complexes of a novel type, [(PP)Pd(O,O′-β-dik(2–)-C1–C3)Pd(PP)](ClO4)2 containing dianions of acetylacetone and ethyl acetoacetate as a bridging ligand and diphosphines (PP) were prepared and characterized mainly by IR and 1H, 13C, and 31P NMR spectroscopy.
SPECTRAL CONTROL OF METHYL ORANGE AND CYANINE DYES BY SYNTHETIC BILAYER MEMBRANES
Authors: Nakashima Naotoshi , Fukushima Hiroshi , Kunitake Toyoki 
Published: July 2006

Abstract
Methyl Orange and cyanine dyes bound to aqueous ammonium bilayer membranes undergo extensive spectral changes which are sensitive to membrane fluidity and small structural changes of the component amphiphile.
NEW POLY- AND BIS(12-CROWN-4)S POSSESSING HIGH SODIUM-SELECTIVITY
Authors: Maeda Takumi , Ouchi Mikio , Kimura Keiichi , Shono Toshiyuki 
Published: July 2006

Abstract
New poly- and bis(crown ether)s containing 12-crown-4 moieties were synthesized. Solvent extraction data suggested that poly(crown ether) and bis(crown ether) derived from acryloyl chloride and malonyl chloride, respectively, have much larger extractability and selectivity for Na+ than bis(crown ether) derived from glutaryl chloride and monocyclic analog.
SHINJUDILACTONE, A NEW BITTER PRINCIPLE FROM AILANTHUS ALTISSIMA SWINGLE
Authors: Ishibashi Masami , Murae Tatsushi , Hirota Hiroshi , Naora Hirokazu , Tsuyuki Takahiko , Takahashi Takeyoshi , Itai Akiko , Iitaka Yoichi 
Published: July 2006

Abstract
Shinjudilactone, a new bitter principle with a new 13 [12→11α]abeo-picrasane skeletone, was isolated from root bark of Ailanthus altissima SWINGLE and the structure was determined.
SYNTHESIS OF ESTERS FROM ACETIC ACID WITH METHANOL, ETHANOL, PROPANOL, BUTANOL, AND ISOBUTYL ALCOHOL CATALYZED BY SOLID SUPERACID1
Authors: Hino Makoto , Arata Kazushi 
Published: July 2006

Abstract
A solid superacid catalyst, which was obtained by exposing Zr(OH)4 to IN H2SO4 and then calcining in air at 500–750°C, was found to be highly active for the heterogeneous title reactions at 30–45°C. The reactions with the used catalyst gave identical results with those using freshly activated catalyst.
A CONVENIENT PREPARATION OF SULPHINIC ESTERS FROM SULPHINYL CHLORIDES AND CHLOROSULPHITES USING HEXAMETHYLDISILOXANE AS CHLORIDE ANION ACCEPTOR
Authors: Drabowicz Jozef 
Published: July 2006

Abstract
Sulphinic esters can be obtained in high yields by the reaction of sulphinyl chlorides with chlorosulphites in the presence of hexamethyldisiloxane and catalytic amount of dimethyl sulphoxide.
A CONVENIENT METHOD FOR THE DIRECT PREPARATION OF KETONES FROM 2-(6-(2-METHOXYETHYL)PYRIDYL)CARBOXYLATES AND ALKYL IODIDES BY USE OF ZINC DUST AND A CATALYTIC AMOUNT OF NICKEL DICHLORIDE
Authors: Onaka Makoto , Matsuoka Yoshio , Mukaiyama Teruaki 
Published: July 2006

Abstract
Treatment of 2-(6-(2-methoxyethyl)pyridyl) carboxylates with alkyl iodides in the presence of zinc dust and a catalytic amount of NiCl2 in DMF at 50 °C affords unsymmetrical ketones in good yields by a one-pot procedure.
PEPTIDE SYNTHESIS BY USING PHENYLPHOSPHONIC ESTER AS A COUPLING REAGENT
Authors: Watanabe Yutaka , Morito Naoya , Kamekawa Ken-ichi , Mukaiyama Teruaki 
Published: July 2006

Abstract
Synthesis of peptides containing various functions was efficiently accomplished by treatment of the tetrabutylammonium salts of N-protected amino acids (or peptides) with amino acid esters in the presence of bis(o- or p-nitrophenyl) phenylphosphonate. Synthesis of leucine-enkephalin was successfully achieved by the above method employing a (3+2) or (4+1) fragment coupling approach.
SYNTHESIS OF (±)-NORAMBREINOLIDE BY CYCLIZATION OF TRANS-β-MONOCYCLOHOMOFARNESIC ACID
Authors: Saito Akira , Matsushita Hajime , Tsujino Yasuko , Kaneko Hajime 
Published: July 2006

Abstract
Synthesis of norambreinolide by acid-catalized cyclization of trans-β-monocyclohomofarnesic acid was studied. From the acid norambreinolide was obtained in 57 per cent yield by catalysis of stannic chloride in dichloromethane at −78°C. Isomerization of norambreinolide to norisoambreinolide was observed with a rise of reaction temperature in the presence of stannic chloride.
COLLOIDAL PLATINUM CATALYST FOR LIGHT-INDUCED HYDROGEN EVOLUTION FROM WATER. A PARTICLE SIZE EFFECT
Authors: Toshima Naoki , Kuriyama Masaki , Yamada Yutaka , Hirai Hidefumi 
Published: July 2006

Abstract
Well-dispersed fine and stable colloidal platinum is easily prepared by refluxing the solution of chloroplatinic acid in alcohol (and water) in the presence of poly(vinyl alcohol) or polyvinylpyrrolidone under air. The catalytic activity of the colloidal platinum for light-induced hydrogen evolution from water depends on the particle size of the platinum indicating the maximum activity for the colloid of about 30 Å in diameter.
SYNTHESIS AND PROPERTIES OF 7-(1,3-DITHIOL-2-YLIDENE)-3,5-CYCLOHEPTADIENE-1,2-DIONE (OR 7,10-DITHIASESQUIFULVALENE-1,2-QUINONE) DERIVATIVES
Authors: Takahashi Kazuko , Takase Kahei , Noda Yoshihiko 
Published: July 2006

Abstract
Three stable 4-tert-butyl, 5-bromo, and 3,5-dibromo derivatives of 7,10-dithiasesquifulvalene-1,2-quinone (or o-tropoquinone dithiolide) were synthesized and their physical and chemical properties were discussed on the basis of their spectroscopic data and the frontier electron density distribution, a stabilizing (reactivity-lowering) effect of the sulfur atoms on these compounds being well displayed in the density distribution.
ALCOHOL FORMATION IN CO HYDROGENATION OVER SUPPORTED RHENIUM
Authors: Tsunoda Takashi , Ogasawara Hiroaki , Komiyama Masaharu , Ozawa Sentaro , Ogino Yoshisada 
Published: July 2006

Abstract
Rhenium supported on CeO2, TiO2 or ZrO2 showed high catalytic activity for CO hydrogenation and was found to produce sizable amount of alcohols along with hydrocarbons. The effects of catalyst support, reaction pressure and reaction temperature on the total conversion and the product distribution were examined.
PALLADIUM CATALYZED REACTION OF HEXABUTYLDITIN WITH ARYL BROMIDES: PREPARATION OF NEGATIVELY SUBSTITUTED ARYLTRIBUTYLTIN
Authors: Kosugi Masanori , Shimizu Kohji , Ohtani Atsushi , Migita Toshihiko 
Published: July 2006

Abstract
Reaction of hexabutylditin with aryl bromides in the presence of a catalytic amount of tetrakis(triphenylphosphine)palladium was found to be a promising tool to prepare aryltributyltins, particularly negatively substituted (–NO2, –COMe, –CN) phenyltin compounds.
HYDROGEN–DEUTERIUM INVERSE ISOTOPE EFFECT MEASURED FOR THE C–O BOND DISSOCIATION PROCESS IN THE METHANATION ON SUPPORTED NICKEL CATALYSTS
Authors: Mori Toshiaki , Masuda Hiroyuki , Imai Hisao , Miyamoto Akira , Baba Shigeo , Murakami Yuichi 
Published: July 2006

Abstract
A hydrogen–deuterium inverse isotope effect was found for the C–O bond dissociation process in the methanation of adsorbed CO on a Ni catalyst using a pulse technique; the average value of kH/kD was 0.75. Such an effect (0.77) was also found for the steady-state reaction of the CO methanation. It was shown that the adsorbed CO molecule is partially hydrogenated before the C–O bond dissociation.
HIGHLY EFFICIENT VALENCE ISOMERIZATION BETWEEN NORBORNADIENE AND QUADRICYCLANE DERIVATIVES UNDER SUNLIGHT
Authors: Maruyama Kazuhiro , Terada Kazutoshi , Yamamoto Yoshinori 
Published: July 2006

Abstract
3-Phenylcarbamoyl-2,5-norbornadiene-2-carboxylic acid (1b) undergoes a facile and quantitative isomerization into the corresponding quadricyclane derivative (2b) under sunlight. The back isomerization of 2b to 1b proceeds quantitatively by the use of catalytic amounts of Rh2(CO)4Cl2.
OPTICAL RESOLUTION OF 3-endo-BENZAMIDO-5-NORBORNENE-2-endo-CARBOXYLIC ACID AND ITS APPLICATION AS A NEW RESOLVING AGENT
Authors: Saigo Kazuhiko , Okuda Yoshiyuki , Wakabayashi Sumio , Hoshiko Tomonori , Nohira Hiroyuki 
Published: July 2006

Abstract
3-endo-Benzamido-5-norbornene-2-endo-carboxylic acid was synthesized from 5-norbornene-2-endo,3-endo-dicarboxylic anhydride in one pot and easily resolved into a pair of optically active forms by preferential crystallization of its dibenzylamine salt. The optically active acid was successfully applied to the optical resolution of (±)-ephedrine as a new resolving agent.
GEOMETRICAL ISOMERISM OF COBALT(III) COMPLEXES WITH MULTIDENTATE THIOLATO LIGANDS
Authors: Yamanari Kazuaki , Takeshita Norimatsu , Komorita Takashi , Shimura Yoichi 
Published: July 2006

Abstract
Two complexes of [Co(amine)4(thiolato)2] type were newly prepared and separated into two isomers each by a column chromatography. The geometrical configurations of the isomers were assigned mainly on the basis of their 13C-NMR and ultraviolet absorption spectra. The sulfur-to-metal charge transfer band of trans(S) isomer appears at lower energy than that of cis(S) isomer.
SYNTHESIS OF PYRROLE DERIVATIVES VIA DEOXYGENATION OF 4H-1,2-OXAZINES BY IRON CARBONYLS
Authors: Nakanishi Saburo , Shirai Yoshihiro , Takahashi Kenji , Otsuji Yoshio 
Published: July 2006

Abstract
The reaction of 5,6-dihydro-4H-1,2-oxazines, which are derived from α-bromooximes and enamines, with iron carbonyl complexes such as Fe3(CO)12 and (C2H5)3NH[HFe3(CO)11] gives pyrrole derivatives in high yields, accompaning deoxygenation from the oxazines. The pyrroles are also obtained by an one-pot reaction using α-bromooximes, enamines and iron carbonyls.
SYNTHESIS OF AVENIC ACID A AND 2′-DEOXYMUGINEIC ACID, AMINO ACIDS POSSESSING AN IRON CHELATING ACTIVITY
Authors: Fushiya Shinji , Sato Yoshikazu , Nakatsuyama Shuichi , Kanuma Norio , Nozoe Shigeo 
Published: July 2006

Abstract
Avenic acid A (1), an amino acid derivative possessing an iron chelating activity and excreted from the root of Avena sativa L. was synthesized in optically active form by successive reductive coupling of protected l-aspartic β-semialdehyde and l-malic semialdehyde with l-homoserine lactone. 2′-Deoxymugineic acid (2), a related substance was also synthesized by the same method by which the stereostructure of this amino acid derivative was proved to be 2(S),3′(S),3″(S)-N-[3-(3-hydroxy-3-carboxypropylamino)-3-carboxypropyl]-azetidine-2-carboxylic acid.
AUTORECYCLING OXIDATION OF ALCOHOL CATALYZED BY PYRIMIDOPTERIDINES AS A FLAVIN MODEL
Authors: Nagamatsu Tomohisa , Matsumoto Etsuko , Yoneda Fumio 
Published: July 2006

Abstract
10-Substituted pyrimido [5,4-g] pteridines (II) were prepared by the condensation of 6-alkylamino-5-nitrosouracils (IV) with appropriate 6-chlorouracils. The compounds II oxidized cyclopentanol under neutral conditions to yield cyclopentanone and a remarkable autorecycling in the oxidation was observed.
DINITROGEN FIXATION CATALYZED BY THE REDUCED SPECIES OF [Fe4S4(SPh)4]2− AND [Mo2Fe6S8(SPh)9]3−
Authors: Tanaka Koji , Hozumi Yoshiyuki , Tanaka Toshio 
Published: July 2006

Abstract
Dinitrogen can be reduced to NH3 under the condition of controlled potential electrolyses in the presence of [Fe4S4(SPh)4]2− or [Mo2Fe6S8(SPh)9]3− in MeOH/THF or in H2O. The maximum current efficiency in the electrochemical reduction is 1.6 % for the reduction of N2 in MeOH/THF and the total yield of NH3 based on the cluster is 195 % for 4 d.
ACTION OF HETEROPOLY ACID AND RELATED OXIDES IN ACYLATION OF CHLOROBENZENE WITH O-CHLOROBENZOYL CHLORIDE
Authors: Yamaguchi Tsutomu , Mitoh Akimi , Tanabe Kozo 
Published: July 2006

Abstract
Heteropoly acids, MoO3, and calcined FeSO4 have been found to catalyze the acylation of chlorobenzene with O-chlorobenzoyl chloride. A kinetic study revealed that those catalysts are not active in their original forms, but the metal chlorides or metal complexes formed by reacting with chlorine are active for the acylation reaction.
STEREOSELECTIVE ACYCLIC SYNTHESIS VIA ALLYLMETALS: AN EFFICIENT SYNTHESIS OF (±)-4-METHYLHEPTAN-3-OL, AN AGGREGATION PHEROMONE OF THE SMALLER EUROPEAN ELM BARK BEETLE
Authors: Koreeda Masato , Tanaka Yoshio 
Published: July 2006

Abstract
A highly effiecient, stereoselective synthesis of the insect pheromone (±)-4-methylheptan-3-ol, 4 steps from 1,3-pentadiene with an overall yield of 69.3%, has been achieved using a Lewis-acid catalyzed addition reaction of an allyltin and propanal.
STEREOSELECTIVE ACYCLIC SYNTHESIS VIA ALLYLMETALS: STRUCTURAL DEPENDENCE IN A LEWIS-ACID CATALYZED ADDITION OF ALLYLTINS TO ALDEHYDES
Authors: Koreeda Masato , Tanaka Yoshio 
Published: July 2006

Abstract
Lewis-acid catalyzed reaction of allyltins with aldehydes at −78 °C provide homoallyl alcohols with high stereoselectivity; 2-alkenyltins in general provide erythro adducts preferentially with an erythro/threo ratio greater than 12/1, whereas only threo adducts can be obtained from E-cinnamyltins.
SELECTIVE HYDROGENATION OF CARBON MONOXIDE ON SUPPORTED Rh CATALYSTS PREREDUCED IN SITU WITH H2O AND CO OR H2
Authors: Iwasawa Yasuhiro , Hayasaka Toshiaki , Ogasawara Sadao 
Published: July 2006

Abstract
Carbon monoxide was selectively converted to ethylene and propylene(&gt;80 % of C1–C6 hydrocarbons produced) at 433–447 K over SiO2-supported Rh catalysts prereduced in situ with a CO–H2O mixture, while another Rh catalyst obtained by the pretreatment in situ with a H2–H2O mixture yielded ethanol and acetaldehyde at a higher selectivity by a factor of about 100 at 453 K than a usual Rh(O) catalyst reduced with H2 alone.
GELATINE MEMBRANE ELECTRODE SENSITIVE TO ALKALINE EARTH METAL IONS IN DIMETHYL SULFOXIDE
Authors: Nakamura Toshio , Morozumi Sumiko , Izutsu Kosuke 
Published: July 2006

Abstract
A gelatine membrane electrode coated on a copper disk was found to respond in DMSO in a Nernstian way to the activities of magnesium and calcium ions and in a near-Nernstian way to that of barium ion. The approximate selectivity coefficients for the magnesium and barium ions vs. the calcium ion were 0.4 and 0.7, respectively. The electrode also responded linearly to paZn2+ and paCu2+, but with slopes larger than the Nernstian one.
SYNTHESIS OF OPTICALLY ACTIVE N-[(N-ACETYL)-α-AMINOACYL]-β-AMINO ALCOHOLS BY HOMOGENEOUS AND HETEROGENEOUS ASYMMETRIC HYDROGENATIONS
Authors: Ojima Iwao , Yatabe Momoko 
Published: July 2006

Abstract
Asymmetric hydrogenations of N-(N-acetyldehydrophenylalanyl)-β-amino alcohol benzyl ethers were carried out by using either rhodium complexes with chiral and achiral phosphines or 10% palladium on carbon. The effects of the chiral center in the β-amino alcohol moiety on simple as well as double asymmetric induction are described.
APPLICATIONS OF THE TANDEM [2,3]-WITTIG-OXY-COPE REARRANGEMENT TO SYNTHESES OF exo-BREVICOMIN AND OXOCRINOL. THE SCOPE AND LIMITATION OF THE SIGMATROPIC SEQUENCES AS A SYNTHETIC METHOD FOR δ,ε-UNSATURATED KETONES
Authors: Mikami Koichi , Nakai Takeshi 
Published: July 2006

Abstract
The synthetic utility of the title sigmatropic sequence is illustrated in the syntheses of E-6-nonen-2-one, a precursor of exo-brevicomin, and oxocrinol. The scope and limitation of this sequence as a synthetic method for δ,ε-unsaturated ketones are also discussed.
NOVEL REACTION OF 2-METHYLENEBENZOTHIAZOLINES WITH 3-(2, 3-DIPHENYL-2-CYCLOPROPENYLIDENE)PENTANE-2,4-DIONE: FORMATION OF 3a,9-DIHYDROCYCLOPENTA[b] [1,4]BENZOTHIAZINES
Authors: Tsuge Otohlko , Tanaka Minorus , Shimoharada Hiroshi , Kanemasa Shuji 
Published: July 2006

Abstract
Reactions of 3-substituted 2-methylenebenzothiazolines, generated in situ from the corresponding 2-methylbenzothiazolium salts and triethylamine, with 3-(2,3-diphenyl-2-cyclopropenylidene)pentane-2,4-dione give 3a,9-dihydrocyclopenta[b][1,4]benzothiazine derivatives.
AN EFFICIENT DOUBLE CHLORINATION OF OLEFINS BY tert-BUTYL HYPOCHLORITE
Authors: Sato Wataru , Ikeda Nobuo , Yamamoto Hisashi 
Published: July 2006

Abstract
Allylie dichlorides can be prepared regioselectively and in good yields from simple olefins by tert-butyl hypochlorite in the presence of silica gel.