bluuebunny/crossref_metadata_2025_split huggingface dataset:
SYNTHESIS OF CYCLIC TRISULFIDES BY USING SILYL AND TIN SULFIDES
Authors: Yamazaki Noboru , Nakahama Seiichi , Yamaguchi Kazuo , Yamaguchi Tetsuhiko 
Published: July 2006

Abstract
Sulfur dichloride was allowed to react with linear and cyclic, silyl and tin sulfides prepared from alkanedithiols. Of the sulfides, bis(trimethylsilyl) sulfides were most effective for synthesis of cyclic trisulfides.
MÖSSBAUER EMISSION SPECTROSCOPIC STUDIES ON SPIN EQUILIBRIUM COMPLEXES [57Co(terpy)2]X2 (X=C1 and ClO4)
Authors: Maeda Yonezo , Ohshio Hiroki , Takashima Yoshimasa 
Published: July 2006

Abstract
The 57Fe Mössbauer emission spectroscopic technique has been applied to the study of after-effects of electron capture in [57Co(terpy)2]Cl2·5H2O and [57Co(terpy)2] (ClO4)2·2H2O (where terpy= 2,2′,2″-tripyridyl) which exhibit an anomalous magnetic behavior. These results were interpreted on the basis of the difference in the spin multiplicity of the central cobalt ion.
1,3-DIPHENYLTHIAZOLO[3,4-a]BENZIMIDAZOLE, A NEW RING-FUSED TETRAVALENT SULFUR THIAZOLE SYSTEM
Authors: Tsuge Otohiko , Shiraishi Hidehiko , Takata Toshiaki 
Published: July 2006

Abstract
1,3-Diphenylthiazolo[3,4-a]benzimidazole, a new 10π-electron heterocycle containing tetravalent sulfur, was prepared by the reaction of 1,2-dibenzoylbenzimidazole with phosphorus pentasulfide in refluxing toluene. Its cycloadditions with alkenes and alkynes occurred across the thiocarbonyl ylide dipole in highly stereoselective and/or regiospecific fashions.
A MICELLAR MODEL OF ZINC CONTAINING METALLOENZYMES
Authors: Eiki Toshio , Mori Mikio , Kawada Shuji , Matsushima Kazumi , Tagaki Waichiro 
Published: July 2006

Abstract
N-Dodecyl-2-hydroxymethylimidazole (1) was found to be unusually active in the transesterification toward p-nitrophenyl picolinate (4), when the reaction was carried out in the presence of CTABr micelle and zinc ion.
THE CO-OCCURRENCE OF FLAVAN AND 1,3-DIPHENYLPROPANE DERIVATIVES IN WOUNDED PAPER MULBERRY
Authors: Takasugi Mitsuo , Kumagai Yoshikazu , Nagao Shigemitsu , Masamune Tadashi , Shirata Akira , Takahashi Kokichi 
Published: July 2006

Abstract
Two antifungal compounds, designated as broussin and broussonin C, were isolated from wounded xylem tissues of paper mulberry shoots and identified as flavan and 1,3-diphenylpropane derivatives, respectively.
ENANTIOFACE-DIFFERENTIATING ADDITION OF A CHIRAL ARYLLITHIUM REAGENT TO ALDEHYDES
Authors: Asami Masatoshi , Mukaiyama Teruaki 
Published: July 2006

Abstract
A chiral aryllithium reagent was prepared by treating a chiral aminal, derived from (S)-2-(anilinomethyl)pyrrolidine and o-bromobenzaldehyde, with n-butyl lithium. The chiral reagent reacted highly enantioface selectively with aliphatic aldehydes and, on hydrolysis of the resulting aminals, various 3-alkyl-1-hydroxy-2-oxaindanes with high enantiomeric excesses were obtained. The oxidation of 3-butyl-1-hydroxy-2-oxaindane with silver oxide afforded (S)-3-butylphthalide, an essential oil of celery, with 88% e.e..
2kF–4kF TRANSITION IN POTASSIUM DEFICIENT PARTIALLY OXIDIZED PLATINUM SALTS, K1.75[Pt (CN)4].1.5H2O
Authors: Kobayashi Hayao , Hano Yoshio , Danno Takaaki , Kobayashi Akiko , Sasaki Yukiyoshi 
Published: July 2006

Abstract
X-ray photographs of K1.75[Pt(CN)4].1.5H2O showed weak 2kF reflections below 294 K, which had been overlooked in neutron and X-ray diffraction studies. These reflections suggest the 2kF eightfold structure. Above Tc, the Pt chain has a 4kF fourfold structure. The 294 K transition can be regarded as the first example of 2kF–4kF transition in the partially oxidized platinum compounds.
STUDIES ON QUINONES. VI. ACID-CATALIZED REARRANGEMENTS IN SOME 4-ACETYL-2,3-DIHYDROBENZO[b] FURANS
Authors: Barrios Luis , Ruiz V Manuel , Tapia Ricardo , Valderrama Jaime , Vega Juan C 
Published: July 2006

Abstract
The reaction of 2-acetyl- and 5-acetyl- 2-methoxy-1,4-benzoquinone (1a, 1c) with N-propenylpiperidine gave the corresponding 2,3-dihydrobenzo[b]furans, 2b and 2c, containing the acetyl group at C-4. Acid treatment of these dihydrofurans rearranged to 8-methyl- and 2-methoxy-8-methyljuglone (4a, 4b). Juglone (4c) and 2,3-dihydrojuglone (6) were obtained in fair yields from 4-acetyl-2,5-dihydroxy-2,3-dihydrobenzo[b]furan (2e).
A NEW SYNTHESIS OF 8-HYDROXYISOALLOXAZINES (8-HYDROXYFLAVINS)
Authors: Yoneda Fumio , Sakuma Yoshiharu , Hiromatsu Keiko , Nitta Yoshihiro 
Published: July 2006

Abstract
Treatment of isoalloxazine 5-oxides with acetic anhydride yielded the corresponding 8-acetoxyisoalloxazines exclusively, which are labile to hydrolysis to give 8-hydroxyisoalloxazines (8-hydroxyflavins).
OXIDATIVE SYNTHESIS, OPTICAL RESOLUTION, AND CHARACTERIZATION OF MIXED SULFENATO AND SULFINATO COBALT(III) COMPLEXES
Authors: Kita Masakazu , Yamanari Kazuaki , Shimura Yoichi 
Published: July 2006

Abstract
Five new complexes fac(S)-[Co{S(O)CH2CH2NH2}n{S(O)2CH2CH2NH2}3−n] (n = 3, 2, 1, and 0) prepared via H2O2 oxidation of fac(S)-[Co(SCH2CH2NH2)3] have been isolated and optically resolved by means of column chromatography or preferential precipitation of a diastereomeric molecular compound with d-tartaric acid.
SYNCHRONOUS ELIMINATION OF THE NITRO AND ESTER GROUPS OR THE NITRO AND KETO GROUPS VIA ONE ELECTRON TRANSFER REACTION
Authors: Tamura Rui , Nakatsuka Tamon , Ono Noboru , Kaji Aritsune 
Published: July 2006

Abstract
The nitro and ester groups are eliminated from α-cyano-β-nitroesters(1)on treatment with one electron transfer reagents. Similarly, the nitro and acetyl groups are eliminated from α-acetyl-β-nitroesters(2)or α-acetyl-β-nitroketones(3).
A NEW SYNTHETIC METHOD FOR PELLITORINE
Authors: Mandai Tadakatsu , Gotoh Jiso , Otera Junzo , Kawada Mikio 
Published: July 2006

Abstract
A stereoselective synthesis of N-isobutyl-E,E-2,4-decadienamide, so called pellitorine is described in which the elimination reaction of acetic acid from 2-acetoxy-E-3-decenenitrile providing 2,4-decadienenitrile in a high yield was used as a key reaction.
cis- AND trans-DICHLOROBIS(BENZONITRILE)PLATINUM(II): PREPARATION AND ISOMERIZATION STUDIES BY 13C NMR SPECTROSCOPY
Authors: Uchiyama Toshihiko , Nakamura Yukio , Miwa Toshio , Kawaguchi Shinichi , Okeya Seichi 
Published: July 2006

Abstract
Although dichlorobis(benzonitrile)platinum(II) has been thought so far to exist solely as a cis isomer, the reaction of platinum(II) chloride with neat benzonitrile affords a mixture of cis and trans complexes in variable proportions depending on the temperature. The 13C NMR spectra of the trans isomer and 13CN-enriched cis isomer are reported together with the rate and equilibrium data for the cis\ightleftarrows trans isomerization in CDCl3.
PHOTO-INDUCED REACTION OF ALKYLATED 1,4-TOLUQUINONE CARRYING ESTER GROUP IN THE ALKYL SIDE CHAIN
Authors: Maruyama Kazuhiro , Kozuka Tadashi 
Published: July 2006

Abstract
Irradiation of several 1,4-toluquinones 1a–d having functionalized side chain rapidly gave bicyclic phenolic compounds 2a–d in good yields via intramolecular hydrogen abstraction-proton transfer-cyclization. In the case of 1f, however, it was found that intramolecular rearrangement occurred concomitantly.
STRUCTURAL EFFECT OF MIXED MICELLES IN THE DEACYLATION OF p-NITROPHENYL ESTERS BY SPECIFIC HYDROXAMIC ACIDS
Authors: Ueoka Ryuichi , Matsumoto Yoko 
Published: July 2006

Abstract
In the presence of cationic surfactants, the deacylation rate of p-nitrophenyl esters by 2-hexyldecanohydroxamic acid which possesses the branched alkyl chains was larger than those by decanohydroxamic acid or the hydroxamic acid of N-decanoylphenylalanine which has the straight alkyl chain.
ENANTIOFACE-DIFFERENTIATION IN FREE RADICAL ADDITION OF THIOLACETIC ACID TO (Z)-2-OCTENE IN THE PRESENCE OF CHIRAL SUBSTANCES
Authors: Yoshihara Masakuni , Fujihara Hisashi , Yoneda Akihiro , Maeshima Toshihisa 
Published: July 2006

Abstract
The free radical addition of thiolacetic acid to (Z)-2-octene in the presence of l-menthol or deoxycholic acid using 2,2′-azobisisobutyronitrile (AIBN) gave optically active 2-acetylthio-n-octane and 3-acetylthio-n-octane.
RADIATION-INDUCED REDUCTION OF AROMATIC CARBOXYLIC ESTERS IN ALCOHOLIC SOLUTIONS
Authors: Sugimori Akira , Yashima Toshihiro 
Published: July 2006

Abstract
Gamma-irradiation of aromatic carboxylic esters in alcoholic solutions brings about the reduction of the ester group to aldehyde, alcohol, α-ketoalcohol, and 1,2-glycol. The reduction is effected by solvated electrons and solvent-derived hydroxyalkyl radicals.
CRYSTAL STRUCTURE OF A β-CYCLODEXTRIN·ETHANOL·OCTAHYDRATE
Authors: Tokuoka Ryoji , Abe Masako , Fujiwara Takaji , Tomita Ken-ichi , Saenger Wolfram 
Published: July 2006

Abstract
Ring-shaped β-cyclodextrin(β-CD) molecules as hosts enclosing ethanol and three water molecules as guests are arranged in cage-type structure produced by the twofold screw axis of the monoclinic crystal system; space group P21, a=21.115, b=10.190, c= 15.214Å, β=111.4°, Z=2. Between the β-CD, five waters are located. Each of the guest ethanol, two waters and three primary hydroxyls are distributed at two alternative sites. The possibility of a structural transition from cage to channel type is considered.
ADDITION OF 5-MEMBERED AROMATIC HETEROCYCLIC COMPOUNDS TO ACETYLENES CATALYZED BY TETRARHODIUM DODECACARBONYL: SYNTHESES OF VINYL SUBSTITUTED AROMATIC HETEROCYCLIC COMPOUNDS
Authors: Hong Pangbu , Cho Bo-Re , Yamazaki Hiroshi 
Published: July 2006

Abstract
In the presence of a catalytic amount of Rh4(CO)12 furan adds to diphenylacetylene (1a) to give 1-(2-furyl)-1,2-diphenylethylene in a 80% yield. Similarly, from 2-substituted furans are obtained the adducts (3e–3h), in which the furyls attach to the olefin at the 5-position of the rings, in good yields. Thiophene and N-methylpyrrole also react with 1a to afford the corresponding ethylenes.
THE CRYSTAL STRUCTURE OF LEAD(II) IODIDE-DIMETHYLSULPHOXIDE(1/2), PbI2(dmso)2
Authors: Miyamae Hiroshi , Numahata Yoshinaho , Nagata Miharu 
Published: July 2006

Abstract
The crystal structure of the title compound has been determined by X-ray diffractometry. Two dimethylsulphoxide molecules co-ordinate to the Pb atom through their O atoms in trans position. The skeletal structure is a linear chain of [&gt;Pb〈II〉] unit.
SIMPLE EVALUATION OF ENANTIOMER-SELECTIVITY OF CROWN ETHER USING MEMBRANE ELECTRODE
Authors: Yasaka Yuta , Yamamoto Takashi , Kimura Keiichi , Shono Toshiyuki 
Published: July 2006

Abstract
Enantiomer-selectivity of the crown ethers I through IV was evaluated by a membrane electrode method. Only chiral crown ether II showed some enantiomer-selectivity for both hydrochloride salts of phenylalanine methylester and phenylethylamine. This method was considered to be a convenient one for screening the enantiomer-selectivity of chiral crown ethers.
THE SIMPLE SYNTHESIS OF ETHYL 2,4-DIENOATES FROM ALDEHYDES AND ETHYL 2-PHENYLSULFINYLACETATE
Authors: Tanikaga Rikuhei , Nishida Masaharu , Ono Noboru , Kaji Aritsune 
Published: July 2006

Abstract
Treatment of aldehydes and ethyl 2-phenylsulfinylacetate (1)in the presence of piperidine gives Z-isomers (Z-2) of 2-phenylsulfinyl-2-alkylideneacetates (2). Thermolysis of Z-2 results in the formation of ethyl E,E-2,4-dienoates (3).
SELECTIVE REDUCTION OF α,β-UNSATURATED CARBONYL COMPOUNDS BY SODIUM HYDROTELLURIDE
Authors: Yamashita Masakazu , Kato Yukihiko , Suemitsu Rikisaku 
Published: July 2006

Abstract
Sodium hydrotelluride was found to serve as a new efficient agent for selective reduction of α,β-unsaturated carbonyl compounds under mild reaction conditions.
A NEW METHOD FOR THE DETERMINATION OF COPPER(II) BY THE CATALYTIC OXIDATION OF VARIAMINE BLUE B BASE ANALOGUE
Authors: Nakano Shigenori , Kuramoto Kazuhiro , Kawashima Takuji 
Published: July 2006

Abstract
A new sensitive and selective catalytic method for the determination of copper(II) is proposed. p-Anisidine reacts with N,N-dimethylaniline to form variamine blue B leuco base analogue. Copper (II) catalyzes the hydrogen peroxide oxidation of the analogue to a blue compound (λmax=740 nm). By the use of this reacqtion, as little as 10−8 M copper(II) can be determined easily.
HIGH-PRESSURE STOPPED-FLOW KINETICS OF PROTON-TRANSFER REACTION BETWEEN 4-NITROPHENYLNITROMETHANE AND 1,1′,3,3′-TETRAMETHYLGUANIDINE IN APROTIC SOLVENTS
Authors: Sasaki Muneo , Sugimoto Naoki , Osugi Jiro 
Published: July 2006

Abstract
The proton-transfer reaction between title compounds was kinetically studied in toluene and dichloromethane at 25°C up to 1000bar by the use of a high-pressure stopped-flow method. The volumes of activation were explainable on the basis of Kirkwood′s electrostatic model.
DISPROPORTIONATION OF CF3Cl CATALYZED BY Al2O3·Cr2O3
Authors: Okazaki Susumu , Erigughi Hideki 
Published: July 2006

Abstract
A mixed oxide of Al2O3 and Cr2O3 (Al2O3· Cr2O3) showed catalytic activity higher than that of Al2O3 or Cr2O3 in the disproportionation of CF3Cl. Maximum conversion (&gt; 30 %) was obtained when the reaction was carried out over the mixed oxide (atomic ratio of Cr/Al:1/9) at 450°C.
X-RAY MOLECULAR STRUCTURE OF A PYRIDYL-BRIDGED DINUCLEAR PALLADIUM COMPLEX, trans(P,N)-[PdBr(μ-C5H4N-C2,N)(PPh3)]2
Authors: Nakatsu Kazumi , Kinoshita Kenji , Kanda Hitoshi , Isobe Kiyoshi , Nakamura Yukio , Kawaguchi Shinichi 
Published: July 2006

Abstract
The structure of the dinuclear complex obtained from the reaction of Pd(PPh3)4 and 2-bromopyridine was determined by X-ray analysis to be trans(P,N)-bis-[bromo(μ-pyridyl-C2,N)(triphenylphosphine)palladium(II)], having an approximate symmetry of C2.
A NEW ANTIAROMATIC HETEROCYCLAZINE: [1,3]THIAZINO[4,3,2-cd]INDOLIZINE
Authors: Kanemasa Shuji , Nakamura Seiichi , Kajigaeshi Shoji 
Published: July 2006

Abstract
A peripheral azomethine ylid 1,3-dipole, anhydro 2,3-dihydro-3-oxo-4H-pyrido[2,1-b][1,3]thiazinium hydroxide, underwent a cyclo-addition reaction to acrylic derivatives under dehydrogenating conditions giving 2,3-dihydro-3-oxo[1,3]thiazino[4,3,2-cd]indolizines. These cycloadducts were converted into the thiacyclazines with twelve electrons on the perimeter via reduction and subsequent dehydration. NMR spectra of the thiacyclazines showed appreciable shielding relative to simple indolizine and cycl[3.2.2]azine.
n-PENTANE ISOMERIZATION OVER SUPPORTED BINARY IODIDE CATALYSTS PREPARED FROM INTERMETALLIC-I2 SYSTEMS
Authors: Imamura Hayao , Soga Kazuo , Sato Masaru , Wallace W E 
Published: July 2006

Abstract
γ-Al2O3 or SiO2 supported binary iodide catalysts, which were prepared by impregnation of the mixtures formed from reacting ErAl3 with I2, exhibited the high ability to catalyze the n-pentane conversion at room temperature. The conversion easily progressed to form iso-pentane along with production of C4 and C6 hydrocarbons. Properties of the catalysts prepared closely related to supports used.
A REGIO- AND STEREOSELECTIVE SYNTHESIS OF γ,δ-UNSATURATED ALCOHOLS
Authors: Yamaguchi Masahiko , Mukaiyama Teruaki 
Published: July 2006

Abstract
(E)-Erythro-γ,δ-unsaturated alcohols are obtained in good yields by the regio- and stereoselective addition reaction of allylboranes, generated from lithiated 2-butenyloxybenzimidazole and trialkylboranes, with aldehydes and ketones.
CIDNP STUDY OF LIGHT-INDUCED ELECTRON-TRANSFER FROM HYDROQUINONE TO PHEOPHYTIN α
Authors: Maruyama Kazuhiro , Furuta Hiroyuki , Otsuki Tetsuo 
Published: July 2006

Abstract
Light-induced electron-transfer from hydroquinone to pheophytin α was investigated by means of CIDNP technique. Spin multiplicity of the excited pheophytin α concerned was solvent-dependent.
INFLUENCE OF BASICITY OF AXIAL LIGANDS ON REACTIONS OF BIS(α-FURILDIOXIMATO)IRON(II) WITH CARBON MONOXIDE
Authors: Sasaki Yoshihiro 
Published: July 2006

Abstract
Reactions of bis(α-furildioximato)iron(II), Fe(FrH)2(X)2, (X=pyridine, 4-cyanopyridine, 3-chloropyridine, 4-chloropyridine, 4-methylpyridine, 1-methylimidazole and butylamine) with carbon monoxide was studied kinetically in chloroform solutions. The reactions proceeded reversibly through a dissociative mechanism. The axial ligand-dissociation rate constants and the activation parameters of Fe(FrH)2(X)2 and Fe(FrH)2(X)(CO) were determined and discussed in terms of basicity of bases (X).
A NOVEL METHOD FOR THE GENERATION OF AN ESTER ENOLATE ANION FROM ETHOXYACETYLENE
Authors: Mukaiyama Teruaki , Murakami Masahiro 
Published: July 2006

Abstract
An ester enolate anion was generated in situ by the successive treatment of ethoxyacetylene with mercury(II) chloride, pyridine-1-oxide and zinc dust, and the zinc enolate thus formed further reacted with aldehydes to give α-chloro-β-hydroxyesters.
THE REACTION OF THIAZOLO[3,2-b]PYRIDAZINIUM PERCHLORATES WITH HYDRAZINES. FORMATION OF 1,4-BIS-(2-VINYL-3-PYRIDAZINYLIDENE)TETRAZENES
Authors: Satoh Kazue , Miyasaka Tadashi 
Published: July 2006

Abstract
Treatment of thiazolo[3,2-b]pyridazinium perchlorates with hydrazine hydrate in acetonitrile afforded the title compounds and several products depending upon its reaction time and temperature and difference of substituent. Catalytic reduction of the tetrazenes gave 2H-3,4-dihydropyridazino[6,1-c] triazines. Oxidation with 30% H2O2 yielded pyridazino[6,1-c]-3-triazinones.
2-METHYLENE-3-ALKOXYCYCLOPENTANONES AS REACTIVE INTERMEDIATES AND THEIR APPLICATION TO THE SYNTHESES OF DIHYDROJASMONE, CIS-JASMONE, AND (±)-JASMOLOLONE
Authors: Takahashi Takashi , Hori Kimihiko , Tsuji Jiro 
Published: July 2006

Abstract
Dihydrojasmone and cis-jasmone were synthesized in high yields by the Michael addition of lithium di-n-butylcuprate and bromomagnesium di-1-butenylcuprate, respectively, to 2-methylene-3-methyl-3-methoxymethyloxycyclopentanone. (±)-Jasmololone was also synthesized by the Michael addition of dialkenylcuprate to 2-methylene-3-methyl-3-methoxymethyloxy-4-ethoxyethyloxycyclopentanone.
LARGE INDUCED CIRCULAR DICHROISM OF METHYL ORANGE BOUND TO CHIRAL BILAYER MEMBRANES. ITS EXTREME SENSITIVITY TO THE PHASE TRANSITION AND THE CHEMICAL STRUCTURE OF THE MEMBRANE
Authors: Nakashima Naotoshi , Fukushima Hiroshi , Kunitake Toyoki 
Published: July 2006

Abstract
Large circular dichroism is induced when Methyl Orange is bound to the bilayer membrane of chiral dialkyl amphiphiles and the magnitude of the induced circular dichroism is changed drastically by the gel-to-liquid crystal phase transition and the chemical structure of the membrane.
SIMPLE SYNTHESIS OF 9-(5-DEOXY-β-d-ERYTHRO-PENT-4-ENOFURANOSYL)ADENINE FROM ADENOSINE BY SELENOXIDE FRAGMENTATION
Authors: Takaku Hiroshi , Nomoto Tadaaki , Kimura Kenji 
Published: July 2006

Abstract
5′-Se-(2-Nitrophenyl)-5′-selenoadenosine (3) was selectively synthesized by the reaction of adenosine with 2-nitrophenylselenocyanate and tri-n-butylphosphine. The selenide 3 was oxidized by treatment with excess hydrogen peroxide to the corresponding selenoxide (4), which readily undergo syn elimination under mild conditions to give the corresponding 9-(5-deoxy-β-d-erythro-pent-4-enofuranosyl)-adenine (5) in good yield.
STRUCTURES OF LEUKAMENINS
Authors: Takeda Yoshio , Fujita Tetsuro , Ueno Akira 
Published: July 2006

Abstract
Six new diterpenoids, leukamenin A, B, C, D, E and F with 15-oxo-ent-kaurene skeleton were isolated from the leaves of Rabdosia umbrosa var. leucantha f. Kameba and their structures were deduced from chemical and spectral evidence.
1,2-CARBONYL TRANSPOSITION OF CIS-BICYCLO[3.3.O]OCTAN-2-ONE TO ITS 3-ONE SKELETON: APPLICATION TO SYNTHESES OF dl-HIRSUTIC ACID AND dl-9(0)-METHANOPROSTACYCLIN
Authors: Yamazaki Mayumi , Shibasaki Masakatsu , Ikegami Shiro 
Published: July 2006

Abstract
A synthetic route to dl-hirsutic acid and an improved synthesis of dl-9(0)-methanoprostacyclin, both of which employ the 1,2-carbonyl transposition as a key step, are described.
DIALKYL 3-ALKOXY-3-(TRIMETHYLSILOXY)-2-PROPENEPHOSPHONATE; A ONE STEP PREPARATION OF (DIALKOXYPHOSPHINYL)METHYL-SUBSTITUTED KETENE ALKYL TRIMETHYLSILYL ACETAL
Authors: Okamoto Yoshiki , Azuhata Toshio , Sakurai Hiroshi 
Published: July 2006

Abstract
In the presence of chlorotrimethylsilane, trialkyl phosphite reacts smoothly with alkyl acrylates to give dialkyl 3-alkoxy-3-(trimethylsiloxy)-2-propenephosphonates in good yields.
Enantioface Differentiating Hydrogenation of β-Ketosulfone
Authors: Hiraki Yuji , Ito Kazuhisa , Harada Tadao , Tai Akira 
Published: July 2006

Abstract
The enantioface-differentiating hydrogenation of β-ketosulfone (I) over (R,R)-tartaric acid-NaBr-modified Raney nickel ((R,R)-TA-NaBr-MRNi) gave β-nydroxysulfone (II) in quantitative chemical yield and 70% optical yield. The optically pure II was obtained from the hydrogenation product by the preferential recrystallization method.
SYNTHESIS OF AMINO ACID BONDED SILICA GEL VIA ACTIVE ESTER WITH N-HYDROXYSUCCINIMIDE
Authors: Watanabe Noriyuki 
Published: July 2006

Abstract
The surface of silica gel was chemically modified by amino acid via active ester with N-hydroxysuccinimide. The formations of insoluble by-product and fine particle coming from silica gel, which occur in DCC method were avoided. The amounts of amino acid coupling to silica gel were about twice larger than that by DCC method.
DIRECT ALKYLAMINATION OF 1,4-DIHYDROXYANTHRAQUINONE IN THE PRESENCE OF SODIUM DITHIONITE
Authors: Kikuchi Masashi , Yamagishi Takamichi , Hida Mitsuhiko 
Published: July 2006

Abstract
In the presence of sodium dithionite, 1,4-dihydroxyanthraquinone reacted with n-butylamine to give 2-butylamino-1,4-dihydroxyanthraquinone in high yield under air. Under a nitrogen atmosphere, this reaction gave 1,4-bis(butylamino)anthraquinone nearly quantitatively.
THE CRYSTAL STRUCTURE OF μ-l-TARTRATO-DICOBALT(III) COMPLEX, Δ-cis(O,O),trans(O,O)-[(en)2Co(tart)(3−)Co(tart)(1−)(en)2]Na(C1O4)3·5H2O
Authors: Matsumoto Yuji , Miki Eiichi , Mizumachi Kunihiko , Ishimori Tatsujiro , Kimura Takashi , Sakurai Tosio 
Published: July 2006

Abstract
The title compound was prepared by the reaction of l-tartaric acid with [CoCO3(en)2]Br. It contains a dimer cation in which two cobalt atoms are bridged through a tridentate tartrate anion. The configuration about one cobalt atom is Δ-cis, and about another is trans(O,O).
EFFICIENT STEREOSELECTIVE SYNTHESIS OF rel-(6S,7S,8S)-7-BUTYL-8-HYDROXY-1-AZASPIRO[5.5]UNDECAN-2-ONE, A KEY INTERMEDIATE FOR PERHYDROHISTRIONICOTOXIN, AND ITS rel-(6R) ISOMER
Authors: Ibuka Toshiro , Minakata Hiroyuki , Mitsui Yoshinori , Tabushi Eiji , Taga Tooru , Inubushi Yasuo 
Published: July 2006

Abstract
Using 3-t-butyldimethylsilyloxy-1-cyclohexenyl methyl ketone as a starting material, a simple stereoselective synthesis of rel-(6S,7S,8S)-7-butyl-8-hydroxy-1-azaspiro[5,5]undecan-2-one, a useful intermediate for the synthesis of pharmacologically important alkaloid perhydrohistrionicotoxin, and its rel-(6R) isomer, was described.
OPTOACOUSTIC STUDY OF THE INFRARED MULTIPHOTON EXCITATION OF SF6
Authors: Fukumi Toshio 
Published: July 2006

Abstract
The optoacoustic effect was used to detect the infrared multiphoton excitation of SF6 as a function of laser wavelength and laser energy fluence. The red shift of the multiphoton excitation specra was observed and from the laser fluence dependence of the intensity of optoacoustic signals, this phenomenum was found to be arised from the resonance of multiquantum transitions to the overtone levels of SF6.
PREPARATION AND CRYSTAL STRUCTURE OF BIS(l-PHENYLEPHRINATO)COPPER(II) MONOHYDRATE
Authors: Nakai Hisayoshi , Noda Yukinao 
Published: July 2006

Abstract
The title compound was prepared, and its structure was determined by the X-ray method. The copper environment is trans-square planar and the two phenylephrinato ligands act as bidentate ligands through the N and O(alcolato) atoms.
AMMONIA SYNTHESIS FROM CARBON MONOXIDE, WATER, AND DINITROGEN OVER Ru–MgO–Cs2O
Authors: Uchiyama Soichi , Hattori Yasuyuki , Aika Ken-ichi , Ozaki Atsumu 
Published: July 2006

Abstract
NH3 is formed from CO, H2O, and N2 at a steady rate over Ru–MgO–Cs2O without forming any hydrocarbons at 370° to 430°C under 1 atm. The rate is proportional to N2 pressure, increases with H2O pressure, but has a maximum at about 5 Torr of CO pressure at 405°C. Normal hydrogen isotope effect was observed both in the title reaction and in the water gas shift reaction.