bluuebunny/crossref_metadata_2025_split huggingface dataset:
DIRECT EVIDENCE OF PHOTODISSOCIATION OF CARBAZOLE VIA THE HIGHER EXCITED TRIPLET STATE BY A DOUBLE EXCITATION METHOD
Authors: Yamamoto Sada-aki , Kikuchi Koichi , Kokubun Hiroshi 
Published: July 2006

Abstract
Photodissociation of carbazole is investigated in cyclohexane at room temperature by a double excitation method which utilizes two successive excitation light pulses; the first flash L1 is used to populate the lowest excited triplet state T1 of carbazole and the second flash L1 to excite T1 into the higher excited triplet state Tn. Selective Tn←T1 excitation of carbazole by L2 brings about both the formation of carbazyl radical and the depletion of T1. Therefore, it is concluded that carbazyl radical is formed via Tn.
KINETIC STUDY ON THE ADDITION OF ETHYLENE TO DI-μ-CHLORO-TETRAKIS (TRIPHENYLPHOSPHINE) DIRHODIUM (I)
Authors: Ohtani Yoshimi , Yamagishi Akihiko , Fujimoto Masatoshi 
Published: July 2006

Abstract
The addition of ethylene to di-μ-chloro-tetrakis (triphenylphosphine)dirhodium(I) is studied by means of a stopped-flow and a rapid-scan spectroscopic method. The reaction is found to proceed in two successive steps: [RhCl(PPh3)2]2 (Remark: Graphics omitted.)[(C2H4) {RhCl-(PPh3)2}2] (Remark: Graphics omitted.)2[RhCl(C2H4)(PPh3)2];K1 = 2.1×102 and k2 = 1.1 mol−1dm3s−1.
SYNTHESIS OF 15,19-METHANO-ω-NOR-PROSTAGLANDINS
Authors: Niwa Haruki , Kurono Masayasu 
Published: July 2006

Abstract
15,19-Methano-ω-nor-prostaglandin F2α and E2 methyl ester, 4 and 5 were synthesized from (−)-Corey’s aldehyde 9 and the β-oxidoylide 6 via allylic rearrangement of the intermediate 17.
TWO TYPES OF INDIRECT CYCLODIMERIZATION OF BIACETYL VIA ITS ENOL SILYL ETHERS
Authors: Murai Shinji , Ryu Ilhyong , Kadono Yukio , Katayama Hajime , Kondo Kiyoshi , Sonoda Noboru 
Published: July 2006

Abstract
Silyl ethers of biacetyl enols, an enone 2 and a diene 3, were prepared. Cyclodimerization of 2 gave a dihydropyran 4, while reaction of 3 with 2, maleic anhydride, and ethyl acrylate gave Diels–Alder adduct 5, 8, and 9, respectively. The compounds 4 and 5 were desilylated to afford 6 and a mixture of 7 and 7′, respectively.
SHORT-LIVED HETERONUCLEAR COPPER(II)-XYLENOL ORANGE-COBALT(II) AND COPPER(II)-XYLENOL ORANGE-NICKEL(II) COMPLEXES
Authors: Yamada Mutsuo , Fujimoto Masatoshi 
Published: July 2006

Abstract
Short-lived heteronuclear intermediates [CuII(XO)CoII] and [CuII(XO)NiII] are detected by a rapid-scan spectrophotometer upon mixing Cu2+ ion with a Co(II)- or a Ni(II)-complex of 3,3′-bis [N,N-bis(carboxymethyl)aminomethyl]-o-cresolsulfonphthalein (Xylenol Orange, XO) in weakly acid solution.
A NEW ONE-POT CROSS COUPLING REACTION OF THE GRIGNARD REAGENTS AND ALLYL ALCOHOLS VIA 2-ALLYLOXYPYRIDINIUM SALTS
Authors: Mukaiyama Teruaki , Imaoka Masanori , Izawa Toshio 
Published: July 2006

Abstract
A new one-pot cross coupling reaction of the Grignard reagents and allyl alcohols via 2-allyloxypyridinium salt was investigated. 2-Allyloxy-1-ethyl-4,6-dimethylpyridinium salts, prepared in situ from allyl alcohols and 1-ethyl-2-fluoro-4,6-dimethylpyridinium tetrafluoroborate, reacted easily with the Grignard reagents to afford the corresponding cross coupling products in good yield.
THE STRUCTURE OF KAMEBANIN, A NEW ANTITUMOR ENT-KAURENOID FROM ISODON KAMEBA OKUYAMA
Authors: Kubo Isao , Miura Iwao , Kamikawa Tadao , Isobe Takahiko , Kubota Takashi 
Published: July 2006

Abstract
Chemical investigation of the bitter principles from Isodon Kameba has led to the isolation and characterization of a new ent-kaurenoid diterpene, kamebanin 1, which has in vitro cytotoxicity, in vivo tumor inhibitory, and antibacterial activities.
ONE STEP SYNTHESIS OF 5,2′-BITHIAZOLE DERIVATIVES: REACTION OF N,N-DIMETHYL-2,4-DITHIOBIURET WITH α-HALOKETONES
Authors: Yamamoto Yuichi , Yoda Reiko , Sekine Kyoko 
Published: July 2006

Abstract
Thermal reaction of N,N-dimethyl-2,4-dithiobiuret (1a) with monochloroacetone (2a) in aqueous solution gave 4-methyl-2-(N,N-dimethylthiocarbamoyl)aminothiazole (3a) and 5,2′-bithiazole derivative, 4-methyl-2-dimethylamino-5-(4′-methylthiazol-2′-yl)thiazole (4a). Reaction of (1a) and phenacyl bromide (2b) gave 2-dimethylamino-4-phenyl-5-(4′-phenylthiazol-2′-yl)thiazole (4b) alone in one step and in a good yield.
IMMOBILIZATION OF ENZYME TO GRAFT-POLYMER ON GLASS SURFACE
Authors: Handa Takashi , Goto Sumio , Akino Toshiro 
Published: July 2006

Abstract
The immobilized glucoamylase (from Rhizopus niveus) was prepared by amidination reaction to partially imidoesterized polyacrylonitrile which had been grafted onto flaky glass surface preirradiated by electron-accelerator.
A STUDY OF THE SOLVENT EFFECT OF DIMETHYL SULFOXIMINE ON THE RATES OF SN2 REACTIONS
Authors: Furukawa Naomichi , Takahashi Fujio , Yoshimura Toshiaki , Oae Shigeru 
Published: July 2006

Abstract
Dimethyl sulfoximine was tested as a solvent in the SN2 reactions and was shown to have characteristic features of both protic and polar aprotic solvents. Dimethyl sulfoximine, when used as a mixed solvent with methanol, showed a large rate acceleration of the SN2 reaction likely DMSO or DMF.
σ-CARBON-BONDED COMPLEXES OF PYRIDINES WITH NICKEL(II)
Authors: Isobe Kiyoshi , Nakamura Yukio , Kawaguchi Shinichi 
Published: July 2006

Abstract
Oxidative substitution of tetrakis(triphenylphosphine) nickel(0) with a chloro- or bromo-pyridine takes place in toluene at room temperature to afford a dimeric complex, [NiX(σ-pyridyl) (PPh3)]2. The σ-pyridyl nickel(II) complex is very stable and has a strong preference for the dimeric structure, the bridging ligand being readily replaced by other halide and pseudo halide ions. [NiCl (2σ-C5H4N) (PPh3)]2 acts as a very powerful catalyst for completely selective cross coupling between 2-chloropyridine and methylmagnesium bromide.
CIRCULAR DICHROISM STUDY ON INCLUSION COMPLEXES OF SOME PROSTAGLANDINS WITH α- AND β-CYCLODEXTRINS
Authors: Uekama Kaneto , Hirayama Fumitoshi , Yamasaki Shyukou , Otagiri Masaki , Ikeda Ken 
Published: July 2006

Abstract
The interaction of some prostaglandins with α- and β-cyclodextrins in aqueous solution has been investigated by circular dichroism (CD) spectroscopy. The changes of the intrinsic CD of prostaglandins and the induced CD of cyclopentanone following the binding to cyclodextrins were largely dependent upon the geometry of guest and host molecules.
THE POSSIBLE USE OF MODIFIED TITANIUM AS POSITIVE GRID IN LEAD-ACID BATTERIES
Authors: Iwakura Chiaki , Inai Meguru , Tamura Hideo 
Published: July 2006

Abstract
During the course of studying on DSA-type electrodes, it was found that the ruthenium dioxide coated titanium has a promising character as a positive grid in lead-acid batteries. This paper briefly describes the preliminary works.
SYNTHESES OF CYCLOTETRADEPSIPEPTIDES, AM-TOXIN II AND ITS ANALOG
Authors: Shimohigashi Yasuyuki , Lee Sannamu , Kato Tetsuo , Izumiya Nobuo , Ueno Tamio , Fukami Hiroshi 
Published: July 2006

Abstract
Synthesis of a cyclotetradepsipeptide corresponding to the sequence of AM-toxin II (2a) was achieved, using methanesulfonyl chloride containing sulfur dioxide in the final step of dehydration. The peptide obtained was identical with natural 2a in regard to mp, TLC, UV, MS, ORD, crystal form and biological activity. An analog [l-Phe1]-AM-toxin (2b), simultaneously synthesized, showed extremely weak activity.
BASE-CATALYZED EQUILIBRIUM OF SHYOBUNONE AND RELATED COMPOUNDS
Authors: Niwa Masatake , Iguchi Masanobu , Yamamura Shosuke 
Published: July 2006

Abstract
On treatment with MeONa–MeOH (under reflux, 7–9 h), shyobunone and related compounds were converted into a mixture of six possible isomers (1, 2, 3, 4, 5, and 6), including the starting material, in the following ratio: 1/2/3/4/5/6 = 3 : 6 : 3 : 1 : 7 : 13. In the cases of the corresponding dihydro compounds, six isomers were also obtained in the following ratio remarkably different from that of shyobunone [7/8/9/10/11/12 = 23 : 7 : 14 : 15 : 21 : 19]. The stereostructures and conformations of these compounds are discussed on the basis of their ORD data.
CYCLIZATION REACTIONS BY THE USE OF 1,2-BIS(TRIMETHYLSILYL)IMINO-1,2-DIPHENYLETHANE
Authors: Matsuda Isamu , Takahashi Toshiro , Ishii Yoshio 
Published: July 2006

Abstract
Imidazole (3) or oxazoline (4) derivatives are obtained by the reactions of 1,2-bis(trimethylsilyl)imino-1,2-diphenylethane with carbonyl compounds after thermolysis or methanolysis of the common intermediate (2) of which thermal stability seems to depend on the electronic character of R.
THE ENANTIOSELECTIVE ABILITY OF CHIRAL DIPHOSPHINE–RUTHENIUM COMPLEX IN ASYMMETRIC DEHYDROGENATION OF SECONDARY ALCOHOLS
Authors: Ohkubo Katsutoshi , Terada Ikuhiro , Yoshinaga Kohji 
Published: July 2006

Abstract
(−)-2,3-O-Isopropylidene-2,3-dihydroxy-1,4-bis(diphenylphosphino)buthane(diop) was found to be an efficient chiral ligand on using in Ru(II) catalyzed enantioselection of racemic alcohols with unsaturated additives. The dehydrogenation of PhEtCHOH by Ru2Cl4((−)-diop) with PhCH=CHCOPh at 165°C resulted in the formation of S-(−)-PhEtCHOH(11.0%e.e. at Conv.=56.8%).
THE COEXTRACTION OF WATER INTO NITROBENZENE WITH ALKALINE EARTH METAL 2,2′,4,4′,6,6′-HEXANITRODIPHENYLAMINATES IN THE PRESENCE OF CROWN ETHERS
Authors: Iwachido Tadashi , Minami Masayoshi , Sadakane Akira , Tôei Kyoji 
Published: July 2006

Abstract
The number of water molecules attached to alkaline earth metal cations (M2+: Ca2+,Sr2+, and Ba2+), some crown ethers (L), and the 1:1 metal-crown complexes (ML2+) extracted into nitrobenzene with hexanitrodiphenylamine was determined by the Karl-Fischer method. Ca2+, Sr2+, and Ba2+ have 13.0, 12.1, and 10.5 water molecules in nitrobenzene respectively, and 6 to 8 water molecules are released on complexation with the crown ethers.
NEW DIRECTED CROSS-ALDOL REACTION USING 9-TRIFLUOROMETHYLSULFONYL-9-BORABICYCLO[3.3.1]NONANE
Authors: Inoue Tan , Uchimaru Tadafumi , Mukaiyama Teruaki 
Published: July 2006

Abstract
A directed cross-aldol reaction between two different carbonyl compounds by using 9-trifluoromethylsulfonyl-9-borabicyclo[3.3.1]nonane and tertiary amine is described. The reaction of methyl ketones with the other carbonyl compounds takes place in regiospecific manner to afford the corresponding cross-aldols in good yields through intermediates, 9-(1-methyl-1-alkenyl)oxy-9-borabicyclo[3.3.1]nonanes.
A FACILE METHOD FOR THE PINACOL REARRANGEMENT OF PHENYLETHANEDIOL DERIVATIVES BY THE USE OF 2-CHLOROPYRIMIDINIUM SALT
Authors: Mukaiyama Teruaki , Echigo Yoshiaki , Shiono Manzo 
Published: July 2006

Abstract
The pinacol rearrangement proceeds under mild conditions by treating phenylethanediol derivatives with 2-chloropyrimidinium salt to give the corresponding aldehyde or ketones in good yields.
ELECTRONIC SPECTRA OF THE ANION RADICALS OF PYRIDINE AND QUINOLINE N-OXIDES
Authors: Ezumi Kiyoshi , Kubota Tanekazu , Shida Tadamasa 
Published: July 2006

Abstract
The electronic spectra of the anion radicals of pyridine and quinoline N-oxides were newly recorded. The radicals were generated by γ-irradiation of the frozen solutions at 77°K. The spectra were interpreted by means of the semiempirical SCFMO-CI calculations.
STUDIES ON THE PREPARATION AND PHYSICAL PROPERTIES OF MULTIVALENT METAL CONDENSED PHOSPHATES. XII. PREPARATION OF VARIOUS CERIUM PHOSPHATES
Authors: Tsuhako Mitsutomo , Ikeuchi Sayuri , Matsuo Tsuneo , Motooka Itaru , Kobayash Masamitsu 
Published: July 2006

Abstract
CePO4, CeP2O7, Ce(PO3)4, and CeP5O14 were chiefly obtained by the reaction of CeO2 with phosphoric acid; while CePO4·0.5H2O, CePO4, Ce(PO3)3, and CeP5O14 by the reaction of CeCl3 with phosphoric acid. The crystal of Ce(PO3)4 was isomorphous with that of U(PO3)4, thus Ce(PO3)4 must be a novel tetravalent cerium metaphosphate. The existence of two kinds of cerium metaphosphate, Ce(PO3)4 and Ce(PO3)3, was confirmed in this study.
OLEAN-18-ENE DERIVATIVES WITH A 13αH-CONFIGURATION
Authors: Honda Tadashi , Murae Tatsushi , Tsuyuki Takahiko , Takahashi Takeyoshi 
Published: July 2006

Abstract
13αH-Olean-18-ene derivatives (4 and 5) were prepared from olean-12-en-19-one derivatives (6 and 24, respectively) by a forced Wolff–Kishner reduction and subsequent acetylation and methylation. Methyl 2,3-di-O-acetylarjunate (15) was transformed, via 16 and 17, into a 13βH-olean-18-ene derivative (21), which proved to be not identical with 4. A 13αH-configuration was therefore shown for 4. A signal due to a C(19)–H of the 13αH-olefins (4 and 5) was observed at δ 5.30, while that of the 13βH-olefin (21) at δ 5.10.
7,10-DITHIASESQUIFULVALENE-1,6-QUINONE [2-(1,3-DITHIOL-2-YLIDENE)-4,6-CYCLOHEPTADIENE-1,3-DIONE]
Authors: Nakayama Jyuzo , Ishihara Miyoko , Hoshino Masamatsu 
Published: July 2006

Abstract
The title compound was synthesized by the condensation of 3-hydroxytropone with 2-methylthio-1,3-dithiolylium iodide and its spectroscopic properties were described.
REACTIONS OF ALLYLTIN COMPOUNDS III. ALLYLATION OF AROMATIC HALIDES WITH ALLYLTRIBUTYLTIN IN THE PRESENCE OF TETRAKIS(TRIPHENYLPHOSPHINE)PALLADIUM(O)
Authors: Kosugi Masanori , Sasazawa Kazuo , Shimizu Yutaka , Migita Toshihiko 
Published: July 2006

Abstract
Catalytic allylation of aryl halides with allyltributyltin in the presence of tetrakis(triphenylphosphine)palladium(O) was investigated. The reaction with aryl bromides proceeded efficiently to yield allylbenzenes.
SYNTHESES OF 2-DIAZO-4-CYCLOPENTENE-1,3-DIONE AND 2-DIAZO-4,6-CYCLOHEPTADIENE-1,3-DIONE. A MARKED DIFFERENCE IN THE DEGREE OF RESONANCE CONTRIBUTION OF THE CANONICAL FORMS
Authors: Oda Masaji , Kasai Masaji , Kitahara Yoshio 
Published: July 2006

Abstract
2-Diazo-4-cyclopentene-1,3-dione 1 and 2-diazo-4,6-cycloheptadiene-1,3-dione 2 are synthesized. The spectral data of these compounds indicate that there are considerable difference between them in the degree of resonance contribution of the canonical forms: the contribution of the enolate canonical form 1b to the resonance hybrid cf 1 is less important than the corresponding form of usual 2-diazo-1,3-diones, while the enolate form 2b to 2 is very important.
ALICYCLIC TERPENOIDS FROM CYCLOCITRYL PHENYL SULFIDES. IV. A SYNTHESIS OF METHYL ESTERS OF VITAMIN A1 AND A2 ACIDS AND THEIR GEOMETRIC ISOMERS
Authors: Uneyama Kenji , Torii Sigeru 
Published: July 2006

Abstract
Methyl esters of vitamin A1 and A2 acids were synthesized by the base-catalyzed desulfination of the C20 skeletons 2a and 2b derived from the coupling reaction between 3a or 3b and the bromo compound 5.
FACILE ACYLATION OF NUCLEOPHILES WITH OXIDIZING AGENT-THIOL ESTER PAIRS
Authors: Minato Hiroshi , Kodama Hiroshi , Miura Takashi , Kobayashi Michio 
Published: July 2006

Abstract
Thiol esters (MeCO-SPh, 2,4,6-Me3C6H2CO-SMe, p-MeC6H4SO2-SMe) were found to function as good acylating agents for nucleophiles(MeOH, t-BuOH, PhOH, PhNH2, Cl−, Br−) when mixed with oxidizing agents (m-ClC6H4CO3H, N-bromosuccinimide) in CH2Cl2 solution. Thiol esters and NBS appear to form a sulfurane as the reactive intermediate.
SYNTHESIS OF SIX-MEMBERED RING ANALOGUES OF PROSTAGLANDIN F1α
Authors: Eggelte T A , Koning H de , Huisman H O 
Published: July 2006

Abstract
Several isomeric prostaglandin F1α analogues in which the cyclopentane moiety is replaced by a cyclohexane ring, have been prepared starting from the Diels–Alder adduct of 1,4-diacetoxy-1,3-butadiene and dimethyl fumarate.
REACTIVITY OF HYDROGEN CHEMISORBED ON PLATINUM FOR HYDROGENATION OF PROPYLENE
Authors: Yoshioka Norihiko , Nakamura Masami , Tsuchiya Susumu 
Published: July 2006

Abstract
The three types of chemisorbed hydrogen (β, γ, and δ) on platinum detected by the temperature programmed desorption were found to exhibit the different reactivity for the hydrogenation of propylene; γ-hydrogen was more reactive than β-hydrogen, and δ-hydrogen was not involved in the hydrogenation.
SILYL PHOSPHITES V. THE REACTIONS OF TRIS(TRIMETHYLSILYL) PHOSPHITE WITH CARBONYL COMPOUNDS
Authors: Sekine Mitsuo , Yamamoto Isamu , Hashizume Akio , Hata Tsujiaki 
Published: July 2006

Abstract
When tris(trimethylsilyl) phosphite (1) was treated with aldehydes, ketones, or α,β-unsaturated aldehydes at room temperature, the 1,2-adducts were obtained in high yields (75–94%). On the other hand, when α,β-unsaturated ketones or ethyl crotonate was used, the 1,4-adducts were obtained in high yields (71–84%). The silylated products were smoothly hydrolyzed to the corresponding phosphonates in almost quantitative yields by addition of alcohol or water.
METALCARBIDES: A NEW NO2–NO CONVERTER MATERIAL FOR A CHEMILUMINESCENT NOX ANALYZER
Authors: Futsuhara Natsuko , Masuda Kazue , Tsuchimoto Koji , Yamaki Naoomi 
Published: July 2006

Abstract
Metalcarbides are investigated as a new NO2–NO converter material for measuring NO2 by using a chemiluminescent NOX analyzer. It is found that the metalcarbides make it possible to convert quantitatively NO2 to NO under very mild conditions without the oxidation of NH3 and N-compounds and without the decomposition of NO.
NONEQUIVALENCE BETWEEN THE GEMINAL DIHYDROXYPHOSPHINYL GROUPS IN SOME 2-SUBSTITUTED 1-AMINOETHYLIDENEDIPHOSPHONIC ACIDS
Authors: Fukuda Masahiro , Okamoto Yoshiki , Sakurai Hiroshi 
Published: July 2006

Abstract
Spectroscopic nonequivalence between the geminal PO(OH)2 groups of some aminodiphosphonic acids with a highly electronegative substituent at 2-position of 1-aminoethylidenediphosphonic acid was found by 1H NMR measurement in D2O. This may result from the formation of an inner salt between amino group and one of the PO(OH)2 groups.
AN INTRAMOLECULAR C-ACYLATION OF AN ENOL: PHOTOCHEMICAL REARRANGEMENT OF TRICYCLO[3.3.2.02,4]DECA-6,9-DIEN-8-ON-1-OL
Authors: Uyehara Tadao , Kayama Yasutaka , Taniguchi Mitsuo , Kabuto Chizuko , Kitahara Yoshio 
Published: July 2006

Abstract
Under direct irradiation in methanol, the compound in the title (6) gave tricyclic keto-ester 7. In the presence of acetic acid, 6 in methanol gave tetracyclo[5.3.01,7.02,10.03,5]deca-6,8-dione (8), which underwent futher photochemical change to monocyclic keto-ester 9.
PHOTOISOMERIZATION OF 6-METHYLENETRICYCLO[3.2.1.02,7]OCT-3-EN-8-OLS : A CONVENIENT SYNTHESIS OF 3-METHYLENETETRACYCLO [3.3.0.0.4,602,8]OCTAN-7-OLS AND RELATED KETONES
Authors: Nitta Makoto , Inoue Osamu , Tada Masaru 
Published: July 2006

Abstract
Ultraviolet irradiation of 6-methylenetricyclo[3.2.1.02,7]oct-3-en-8-ols (Ia) and (Ib) afforded 3-methylenetetracyclo[3.3.0.0.4,602,8]octan-7-ols (IIa) and (IIb) in fairly good yields. This photorearrangement is considered to be a di-π-methane rearrangement. Oxidation of the photoproducts gave the ketones retaining the carbon skeleton of IIa and IIb
HIGHLY ASYMMETRIC SELECTIVE POLYMERIZATION OF (RS)-α-METHYLBENZYL METHACRYLATE BY GRIGNARD REAGENT-(−)-SPARTEINE CATALYST SYSTEMS
Authors: Okamoto Yoshio , Ohta Koji , Yuki Heimei 
Published: July 2006

Abstract
Polymerization of (RS)-α-methylbenzyl methacrylate by Grignard reagent-(−)-sparteine catalyst systems was found to be a highly asymmetric selective process. The catalyst systems polymerized preferentially (S)-monomer over (R)-monomer. At 60–70% yield of the polymer, the optical purity of the unreacted monomer was more than 90%.
THE STUDIES OF THE ACTIVATED COMPOUND (I) A METAL INDUCED ACYLATION
Authors: Abe Kyo , Sato Takanori , Nakamura Nobuo , Sakan Takeo 
Published: July 2006

Abstract
The new activated compound, 2-acyloxy-3-methylpyrazine was treated with the Grignard reagent to give ketone in high yield. The comparison of reactivity of the activated compounds (8-acyloxyquinoline and 2-acyloxy-3-methylpyrazine) was described.
SYNTHETIC CONTROL BASED ON CHIRAL 2-HALOPYRIDINIUM SALTS II. THE KINETIC RESOLUTION OF RACEMIC AMINES
Authors: Mukaiyama Teruaki , Onaka Makoto , Shiono Manzo 
Published: July 2006

Abstract
Various racemic amines are kinetically resolved by use of (S)-(+)-2-chloro-l-(1-cyclohexylethyl)-3-ethyl-6-methylpyridinium tetrafluoroborate (I) and (S)-(+)-2-phenylbutanoic acid (II).
THE CONFIGURATION OF (+)-GLUTINOSONE
Authors: Murai Akio , Taketsuru Hirofumi , Yagihashi Fujio , Katsui Nobukatsu , Masamune Tadashi 
Published: July 2006

Abstract
The configuration of (+)-glutinosone was determined on the basis of the chemical transformation from (−)-rishitin and the NMR spectrum in the presence of the shift reagent.
THE CONFIGURATION OF 17-ETHYL-3β-HYDROXYETIOJERVA-5,12,17(20)-TRIEN-11-ONE AND RELATED COMPOUNDS
Authors: Murai Akio , Sasamori Hiroshi , Masamune Tadashi 
Published: July 2006

Abstract
The title compound, one of the most important starting materials for the synthesis of C-nor-d-homosteroid and normal steroid hormones, was determined to possess (E)-configuration at the 17,20-double bond on the basis of the chemical and spectral evidence.
EMISSION SPECTRUM OF HYDROGEN SULFIDE IN A HELIUM AFTERGLOW
Authors: Tsuji Masaharu , Tsuji Kumiyo , Fukutome Hisao , Nishimura Yukio 
Published: July 2006

Abstract
Emission spectrum of H2S from the interaction of He (23S) with H2S was observed in a fast flow system. Radiation from the excited fragments, SH+(A3Π-X3Σ−) and H (Balmer series), was identified in the 300–500 nm region. It was presumed that the excited fragments arose from superexcited states of H2S.
BIOSYNTHESIS OF PROTOANEMONIN IN RANUNCULUS GLABER. THE STEREOCHEMISTRY OF THE HYDROGEN ELIMINATION IN THE FORMATION OF THE DOUBLE BOND OF PROTOANEMONIN
Authors: Suga Takayuki , Hirata Toshifumi , Okamoto Emiko , Kataoka Makio 
Published: July 2006

Abstract
In order to determine the stereochemistry of the hydrogen elimination in the formation of the Δ3-double bond of protoanemonin (I) by Ranunculus glaber Makino, [(3r)-3-3H1;3,4-14C]- and [3-3H2;3,4-14C]-α-ketoglutaric acids were administered to the plants. The 3H/14C ratios in I biosynthesized from these doubly labeled acids demonstrated that the formation of the Δ3-double bond occurs with the stereospecific loss of the pro-3s-hydrogen atom of α-ketoglutaric acid.
A DIFFUSION OF METAL INTO POLYMERIC LAYER BY A NOVEL ELECTRO-INDUCED METALLOCHROMIC REACTION
Authors: Ohno Shin 
Published: July 2006

Abstract
A copper evaporated organic film consisting of a poly(vinyl-chloride) matrix and a precursor of a chelating agent was tinged with magenta (λmax=520 nm) under successive treatments of electron bombardment and heating. On the bombarded part, structure of film was changed from laminated double layers to single organic one. The coloration was due to formation of a cupric metallochrome (colored chelate) and was closely related to the change of chemical property of evaporated copper by the above treatments. Thus the copper disappearance from the surface was estimated to have occurred by diffusion into the organic layer.
NOVEL EFFECTS OF CROWN-ETHER COMPLEXATION ON THE HETEROGENEOUS GAS-PHASE REACTIONS OF ALKYL HALIDES OVER SILICA GEL-SUPPORTED METAL CHLORIDES
Authors: Mizuno Koichi , Watanabe Hitoshi , Misono Makoto , Take Jun-ichiro , Yoneda Yukio 
Published: July 2006

Abstract
Gas-phase reactions of alkyl halides over the complexes of KCl and CaCl2 with dibenzo-18-crown-6 supported on silica gel exhibited high substitution to elimination ratio and relative reactivities of primary &gt; secondary and iodide &gt; bromide, in contrast to those over uncomplexed metal chlorides. These results together with stereochemistry and poisoning effect indicate that the complexation with crown ether enhances the nucleophilicity or basicity of metal chlorides.
AN IMMUNO SENSOR FOR SPECIFIC PROTEIN
Authors: Aizawa Masuo , Suzuki Shuichi , Nagamura Yoichi , Shinohara Rikio , Ishiguro Isao 
Published: July 2006

Abstract
An immuno sensor for determining specific protein has been developed. The measuring system is characterized by the potentiometric determination of potential difference across an antigenbinding membrane. A lipid antigen containing cardiolipin, phosphatidyl choline, and cholesterol was immobilized to an acetylcellulose membrane. The membrane-bound antigen retained the immunochemical reactivity to Wassermann antibody. The assymmetric membrane potential developed was dependent on the concentration of the antibody.