bluuebunny/crossref_metadata_2025_split huggingface dataset:
α-HALO-β-DICARBONYL COMPOUNDS. NOVEL CARBOXYL PROTECTING REAGENTS
Authors: Ishimaru Toshiyasu , Ikeda Hitoshi , Hatamura Mariko , Nitta Hajime , Hatanaka Minoru 
Published: July 2006

Abstract
α-Halo-β-dicarbonyl compounds are useful reagents for the protection of carboxylic acids, particularly penicillin 3-carboxylic acid. The protected carboxylic acids can be successfully converted into the free acids by treatment with nitrosating reagents such as sodium nitrite and alkyl nitrite. The probable mechanism of this deprotection is also described.
A KINETIC METHOD FOR THE DETERMINATION OF ASCORBIC ACID WITH 2,6-DICHLOROPHENOLINDOPHENOL
Authors: Hiromi Keitaro , Fujimori Haruko , Yamaguchi-Ito Junko , Nakatani Hiroshi , Ohnishi Masatake , Tonomura Ben’ichiro 
Published: July 2006

Abstract
A kinetic method for the determination of ascorbic acid is described. The method is based on the linear relationship, in a wide range, between the apparent first-order rate constant, kapp, of the reduction of 2,6-dichlorophenolindophenol by ascorbic acid and the concentration of ascorbic acid. The method is sensitive, specific, and applicable to turbid or colored samples.
A NEW METHOD FOR THE PREPARATION OF ISOCYANATES FROM METHYL THIOCARBAMATES BY THE USE OF 2-CHLOROBENZOXAZOLIUM SALT
Authors: Echigo Yoshiaki , Watanabe Yutaka , Mukaiyama Teruaki 
Published: July 2006

Abstract
Treatment of methyl thiocarbamates with 2-chloro-3-ethylbenzoxazolium tetrafluoroborate and triethylamine at room temperature affords isocyanates in good yields under neutral condition.
SYNTHESIS OF CARBOXYLIC ESTERS FROM ALKYL HALIDES AND ALKOXIDES USING PENTACARBONYLIRON AS A CARBONYLATING REAGENT
Authors: Yamashita Masakazu , Mizushima Kiyoshi , Watanabe Yoshihisa , Mitsudo Take-aki , Takegami Yoshinobu 
Published: July 2006

Abstract
Carboxylic esters were prepared under mild conditions in high yields from alkyl halides and alkoxides using pentacarbonyliron as a carbonylating reagent.
THE EFFECT OF PYRIDINIUM ION ON POSITRON ANNIHILATION IN AQUEOUS SOLUTIONS
Authors: Ujihira Yusuke , Kobayashi Yoshinori , Nomizu Tsutomu 
Published: July 2006

Abstract
Positron lifetime measurements in aqueous solutions of pyridine-hydrochloric acid at various solute concentrations revealed that pyridinium ion, formed by Py + H+\ightleftharpoons [PyH]+ reduced the relative intensity of ortho-positronium(I2) without changing ortho-positronium lifetime(τ2) significantly. Comparison of the result with that of anilinium ion suggested that the presence of pyridine ring, whose π electron density is lower than that of benzene, is an important point for the reduction of I2.
APPLICATION OF MASS SPECTRA OF IONS WITH EXCESS KINETIC ENERGY TO THE ISOTOPE-LABELLING TECHNIQUE FOR ORGANIC CHEMISTRY
Authors: Tsuchiya Masahiko 
Published: July 2006

Abstract
Precursors of ions with excess kinetic energy (KE ions) have higher internal energy than those of ordinary ions (thermal ions), so that rearrangement reactions like H/D scrambling may be less probable in the mass spectra of KE ions. For example, the location and number of deuterium atoms in 1,4-butanediol-2,2,3,3-d4 has been correctly indicated by the mass spectrum of KE ions, while the ordinary mass spectrum gives no reliable information because of rearrangement. Information obtained from mass spectrum of KE ions has also been described.
CARBON 13 SPIN-LATTICE RELAXATION TIMES OF THE INCLUSION COMPLEX OF β-CYCLODEXTRIN WITH SULFATHIAZOLE IN AQUEOUS SOLUTION
Authors: Uekama Kaneto , Hirayama Fumitoshi , Koinuma Hideomi 
Published: July 2006

Abstract
Carbon 13 spin-lattice relaxation times for inclusion complex of β-cyclodextrin with sulfothiazole in aqueous solution have been measured by an inversion-recovery method. The reduction of molecular motions and changes in carbon 13 chemical shifts in both species suggest a predominantly hydrophobic interaction.
THE REACTIONS OF BIS(TRIMETHYLSILYL) HYPOPHOSPHITE WITH CARBONYL COMPOUNDS
Authors: Hata Tsujiaki , Mori Hiroyuki , Sekine Mitsuo 
Published: July 2006

Abstract
Bis(trimethylsilyl) hypophosphite, generated in situ from hypophosphorous acid and silylating agents such as trimethylsilyl chloride in the presence of triethylamine or bis(trimethylsilyl)acetamide, reacted with carbonyl compounds to give the carbonyl adducts, which were successfully converted to anilinium salt of the corresponding phosphonous acids by treatment with aniline-containing ethanol.
TWO NEW BROMOPHENOLS FROM THE RED ALGA, RHODOMELA LARIX
Authors: Kurata Kazuya , Amiya Takashi 
Published: July 2006

Abstract
Two new bromophenols, 2,2′,3,3′-tetrabromo-4,4′,5,5′-tetrahydroxydiphenylmethane and 2,2′,3-tribromo-3′,4,4′,5-tetrahydroxy-6′-methoxymethyldiphenylmethane have been isolated from the red alga, Rhodomela larix.
OXIDATIVE DECYANATION OF PHENYLACETONITRILES WITH MOLECULAR OXYGEN IN AQUEOUS MEDIUM
Authors: Masuyama Yoshiro , Ueno Yoshio , Okawara Makoto 
Published: July 2006

Abstract
The alkylation of phenylacetonitrile (1) followed by the oxidative decyanation using molecular oxygen in aqueous alkali gave alkyl phenyl ketones (3).
MOLECULAR STRUCTURE OF η3-[(trans-1,2-DIMETHOXYCARBONYLVINYL)METHOXYCARBENE]TRICARBONYLIRON(0), A NOVEL COMPLEX CONTAINING THREE-CARBON FOUR-ELECTRON LIGAND, η3-VINYLCARBENE
Authors: Nakatsu Kazumi , Mitsudo Take-aki , Nakanishi Hiroshi , Watanabe Yoshihisa , Takegami Yoshinobu 
Published: July 2006

Abstract
X-ray structure determination of the title complex, [(OC)3FeC(OMe)–C(COOMe)=CH(COOMe)], reveals that the η3-vinylcarbene ligand coordinates to Fe with both the C=C group and the carbene C atom. The short Fe–C(carbene) length of 1.819(3) Å suggests some partial double bond character to its bond.
A SELECTIVE ESTER-EXCHANGE REACTION IN THE COPPER(II) CHELATE OF THE SCHIFF BASE DERIVED FROM SALICYLALDEHYDE AND DIBENZYLASPARTATE
Authors: Nakao Yasuo , Nakahara Akitsugu 
Published: July 2006

Abstract
Upon refluxing a solution of bis(N-salicylidenedibenzyl-Dl-aspartato)copper(II), 1, in methanol, bis(N-salicylidene-α-methyl-β-benzyl-Dl-aspartato)copper(II) 2, was obtained in a 63% yield, suggesting that an ester-exchange reaction occurred preferably at the α-position of the aspartate.
REACTIONS OF CYTOTOXIC NOR-DITERPENOID DILACTONES IN PODOCARPUS NAGI: MODIFICATIONS OF RING A FUNCTIONAL GROUPS
Authors: Hayashi Yuji , Matsumoto Takeshi , Hyono Toshiaki , Sakan Takeo 
Published: July 2006

Abstract
Chemical modifications of the ring A functional groups on the biologically active nor-diterpenoid dilactones of Podocarpus plants are described. Some results obtained here are different from the reported unusual properties of these unique compounds.
NOVEL THREE- AND ONE-CARBON RING EXPANSION REACTIONS OF A FIVE MEMBERED CARBOCYCLIC COMPOUND
Authors: Tsuzuki Kazuo , Hashimoto Hisanobu , Shirahama Haruhisa , Matsumoto Takeshi 
Published: July 2006

Abstract
Ethyl 2-oxo-1-(2-oxopropyl)-1-cyclopentanecarboxylate, on treatment with tBuOH-tBuOK at rt (1h), affords unusual ring expansion products ethyl 3,5-dioxo-1-cyclooctanecarboxylate, ethyl 4-acetyl-3-oxo-1-cyclohexanecarboxylate and ethyl 2-acetyl-3-oxo-1-cyclohexanecarboxylate in 19, 40 and 12% yields, respectively.
ISOLATION OF RADICAL ANION OF ALLOXAN DERIVED FROM THE REACTIONS OF ALLOXAN OR ALLOXANTIN WITH 1-BENZYL-1,4-DIHYDRONICOTINAMIDE
Authors: Endo Takeshi , Okawara Makoto 
Published: July 2006

Abstract
Radical anion of alloxan could be isolated as 1-benzyl-3-carbamoylpyridinium salt (III) by the reactions of 1-benzyl-1,4-dihydronicotinamide with alloxan or alloxantin (II). III was also prepared by the reactions of II with 1-benzyl-3-carbamoylpyridinium chloride.
REACTION OF AZINES WITH DIPHENYLCYCLOPROPENONE. SYNTHESIS OF 5-ARYL-2, 3-DIPHENYL-Δ2-PYRROLIN-4-ONES
Authors: Takahashi Masahiko , Yamaguchi Shin-ichi , Igari Norio 
Published: July 2006

Abstract
The reactions of aromatic aldehyde azines with diphenylcyclopropenone in refluxing toluene afforded 5-aryl-2, 3-diphenyl-Δ2-pyrrolin-4-ones in moderate yields.
SYNTHESIS OF 5-(1,3-DITHIOL-2-YLIDENE)-3,6-CYCLOHEPTADIENE-1,2-DIONE (OR 7,10-DITHIASESQUIFULVALENE-3,4-QUINONE) DERIVATIVES
Authors: Takahashi Kazuko , Morita Kazuyoshi , Takase Kahei 
Published: July 2006

Abstract
8-Phenyl-7,10-dithiasesquifulvalene-3,4-quinone (7a) and its halogen derivatives (7b and 7c) are synthesized. Although their IR and NMR data suggest a contribution of dipolar structure (7″) to the ground state, the solvent effect on the 1st bands in their ES showed a larger contribution of 7″ to the excited state rather than the ground state.
13C NMR SPECTRUM AND SPIN-LATTICE RELAXATION TIMES (T1) OF A [14]ANNULENO[14]ANNULENE DERIVATIVE AND THE SIGNAL ASSIGNMENTS BY THE T1 METHOD
Authors: Nakanishi Hiroshi , Akiyama Shuzo , Nakagawa Masazumi 
Published: July 2006

Abstract
13C NMR spectrum of a [14]annuleno[14]annulene derivative (1) and the spin-lattice relaxation times (T1) were studied. The assignments of the signals of four quaternary ring carbons were successfully made by comparing the observed T1’s with the calculated ones. The chemical shifts of 1 were compared with those of corresponding [14] and [22]annulene derivatives.
SYNTHESIS OF 7-HYDROXYPHTHALIDES STARTING FROM UNSATURATED LACTONES VIA 2-TRIALKYLSILOXYFURANS
Authors: Asaoka Morio , Miyake Kazutoshi , Takei Hisashi 
Published: July 2006

Abstract
Diels–Alder adducts of maleic anhydride and 2-trialkylsiloxy furans, prepared from unsaturated lactones and trialkylchlorosilane in high yields, afforded 3-hydroxyphthalic anhydrides on treatment with hydrobromic acid. The anhydrides were regiospecifically reduced to 7-hydroxyphthalides in high yields by means of excess sodium borohydride in alcohol.
AN ORIGIN FOR NONEQUIVALENCY OF CARBONS CONSTITUTING ROTATIONAL AXES IN 13C NMR SPECTRA: A CASE OF ROTAMERIC 9-(o-ALKYLPHENYL)FLUORENES
Authors: Nakamura Mikio , Nakamura Nobuo , Oki Michinori 
Published: July 2006

Abstract
The difference in chemical shifts of 9-C in ap and sp forms of 9-(o-alkylphenyl)fluorenes increases as the size of the alkyl groups increases. The change in the difference is correlated with 1JCH and is discussed on the ground of bond angle deformation.
NEW SYNTHETIC METHOD OF 5- AND 2,5-SUBSTITUTED 3-FUROATES, AND 1,4-DICARBONYL COMPOUNDS FROM UNSATURATED LACTONES
Authors: Asaoka Morio , Sugimura Naoyuki , Takei Hisashi 
Published: July 2006

Abstract
The title compounds were synthesized from 4-substituted 2-(1′-ethoxyalkylidene)-3-buten-4-olides 3, obtained by the reaction of 4-substituted 2- or 3-buten-4-olides with ortho esters and acetic anhydride.
A SIMPLE METHOD FOR MEASURING THE TRANSLATIONAL ENERGY OF IONS WITH AN ANALYTICAL MASS SPECTROMETER
Authors: Tajima Susumu , Sato Takeshi , Yanagisawa Tamae , Azami Tadashige , Tsuchiya Toshikazu 
Published: July 2006

Abstract
The average translational energy of ions has been readily measured by applying a variable retarding potential of negative voltage to the repeller electrode. The measured value of the methyl ion from acetonitrile at the threshold is in fair agreement with that in literature.
LÖSUNGSMITTELEINFLUSS BEI DER DIMERISIERUNG DES BUTADIENS UND BEI DER REAKTION VON BUTADIEN MIT CYCLOPENTADIEN
Authors: Nakagawa Kiyoshi , Ishii Yasutaka , Ogawa Masaya 
Published: July 2006

Abstract
Der Lösungsmitteleinfluss auf die Reaktionsgeschwindigkeiten der Dimerisierung des Butadiens und der Reaktion von Butadien mit Cyclopentadien wurde untersucht. Der unerwartete negative Einfluss der Lösungsmittelpolarität spricht dafür, dass es bei den von uns untersuchten Diels–Alder-Reaktionen in polaren Lösungsmitteln einer Entsolvatationsenergie bedarf.
FISH BIOLUMINESCENCE I. ISOLATION OF A LUMINESCENT SUBSTANCE FROM A MYCTOPHINA FISH, NEOSCOPELUS MICROCHIR, AND IDENTIFICATION OF IT AS OPLOPHORUS LUCIFERIN
Authors: Inoue Shoji , Okada Kunisuke , Kakoi Hisae , Goto Toshio 
Published: July 2006

Abstract
A luminescent substance was isolated from liver of N. microchir. It was proved to be identical with Oplophorus luciferin.
SQUID BIOLUMINESCENCE IV. ISOLATION AND STRUCTURAL ELUCIDATION OF WATASENIA DEHYDROPRELUCIFERIN
Authors: Inoue Shoji , Taguchi Hiroyasu , Murata Mikiko , Kakoi Hisae , Goto Toshio 
Published: July 2006

Abstract
Watasenia dehydropreluciferin was isolated from livers of Watasenia scintillans. Its structure was determined as Ia rather than Ib. Sodium borohydride reduction of Ia gave Watasenia preluciferin (IV).
MOLECULAR STRUCTURES OF DONOR–ACCEPTOR COMPLEXES OF BORON TRIFLUORIDE WITH TRIMETHYLAMINE AND DIMETHYLETHER
Authors: Shibata Shuzo , Iijima Kinya 
Published: July 2006

Abstract
The molecular structures of (CH3)3N·BF3 and (CH3)2O·BF3 were determined by electron diffraction. Both molecules were found to have a staggered form with rg(N–B) = 1.673 ± 0.006 Å, rg(O–B) = 1.719 ± 0.023 Å. The other molecular parameters for the complexes were compared with those for their donors and acceptor.
SYNTHESES AND SOME CHARACTERIZATION OF 3,5,7-CYCLOOCTATRIENE-1,2-DIONE AND ITS 3-BROMO DERIVATIVE
Authors: Oda Masaji , Oda Mitsunori , Miyakoshi Shoichi , Kitahara Yoshio 
Published: July 2006

Abstract
3,5,7-Cyclooctatriene-1,2-dione 1, a labile substance, is synthesized from 7-bromo-3,5-cyclooctadiene-1,2-dione by dehydrobromination and characterized by 1H-NMR spectrum and some chemical reactions. The formation of 3-bromo derivative 3 is also demonstrated mainly by means of 1H-NMR spectroscopy.
EQUILIBRATION OF METHYL 3-OXO-CIS-, 10-OXO-CIS-AND 10-OXO-TRANS-CYCLOUNDEC-1-ENECARBOXYLATES
Authors: Marchesini A , Paronzini M , Pagnoni U M 
Published: July 2006

Abstract
Methyl 3-oxo-cis-cycloundec-1-enecarboxylate (3) and the corresponding Δ3-isomers, methyl 10-oxo-cis- and 10-oxo-trans-cycloundec-1-enecarboxylates (5) and (4), were synthesized. Equilibration using 1,5-diazabicyclo [4.3.0]non-5-ene as a basic catalyst gave very different results in comparison with those reported for analogous systems with 7–10 membered ring.
A NOVEL BASE-CATALYZED REARRANGEMENT OF p-PEROXYQUINOL ESTERS
Authors: Nishinaga Akira , Nakamura Koichi , Yoshida Kaoru , Matsuura Teruo 
Published: July 2006

Abstract
The p-peroxyquinol esters derived from the base-catalyzed oxygenation of 4-alkyl-2,6-di-t-butylphenols (alkyl=R1) followed by the Schotten–Baumann acylation (R2COCl) undergo a novel base-catalyzed rearrangement with t-BuOK in DMF to give p-quinoxyacetic acid derivatives in excellent yields. A mechanism involving the initiation by the homolysis of O–O bond is discussed.
SELECTIVE FORMATION OF BUTADIENE IN CHLORINATION OF BUTENES THROUGH MOLTEN SALTS
Authors: Kikkawa Shoichi , Nomura Masakatsu , Shimizu Michimasa 
Published: July 2006

Abstract
The reaction of three butenes with chlorine through ZnCl2–KCl–NaCl melts yielded selectively butadiene at 450°C while chlorination through CuCl–KCl–NaCl melts and thermal chlorination produced considerable amounts of C4H7Cl and C4H8Cl2 along with expected butadiene.
SYNTHESIS OF E-TYPE 7-THIAPROSTAGLANDINS
Authors: Kurozumi Seizi , Toru Takeshi , Kobayashi Makiko , Hashimoto Yoshinobu 
Published: July 2006

Abstract
2-Alkylthiocyclopent-2-en-1-one derivative was prepared from cyclopent-2-en-1-one. From this intermediate, E-type 7-thiaprostaglandins were synthesized by conjugate addition of lithium organocuprates.
POLARIZED TRIPLET–TRIPLET ABSORPTION SPECTRUM USING STRETCHED POLYMER FILM AT LIQUID NITROGEN TEMPERATURE: DIPHENYLACETYLENE
Authors: Hoshi Toshihiko , Ota Kazuo , Yoshino Junko , Murofushi Kiyoshi , Tanizaki Yoshie 
Published: July 2006

Abstract
Measurements of a polarized triplet–triplet absorption spectrum using stretched polymer films have been attempted at liquid nitrogen temperature. The polarizations of the triplet–triplet transitions of diphenylacetylene were determined, and the molecular structure in the excited triplet state was discussed.
STRUCTURAL STUDY OF OPTICAL RESOLUTION V. THE CRYSTAL STRUCTURE OF HYDROGEN TRIS(ETHYLENEDIAMINE)COBALT(III) d-TARTRATE TRIHYDRATE
Authors: Tada Toshiji , Kushi Yoshihiko , Yoneda Hayami 
Published: July 2006

Abstract
A new diastereoisomeric salt, H(+)589–[Co(en)3](d-tart)2·3H2O, has been prepared, and complete resolution of racemic [Co(en)3]3+ cation has been effected by use of this salt. The X-ray structure analysis revealed that this salt has a local “[Co (en)3](d-tart)2” block similar to that previously found in Li(+)589–[Cr(en)3](d-tart)2·3H2O crystal.
ELECTRON SPIN RESONANCE SPECTROSCOPIC INVESTIGATIONS OF t-BUTYL SUBSTITUTED N-ARYL-N-ARYLTHIOAMINYLS
Authors: Miura Yozo , Katsura Yosuke , Kinoshita Masayoshi 
Published: July 2006

Abstract
t-Butyl substituted N-aryl-N-arylthioaminyls (2) were generated and their ESR and visible spectral data were determined. The radicals persist for a few days and it seems that they are not sensitive to oxygen.
MICROWAVE SPECTRA OF THE TRANS–TRANS ISOMER OF METHYLPROPYLETHER
Authors: Hayashi Michiro , Imachi Misako , Nakagawa Jun , Ozaki Akane 
Published: July 2006

Abstract
Microwave spectra of the trans–trans isomer of methylpropylether and its four deuterated species were measured. A plausible structure was estimated from the observed rotational constants. The dipole moment was determined to be 1.107 ± 0.005 D by Stark effect measurements. From the observed splittings of the spectra in the excited torsional state, the barrier to internal rotation of the CH3C group was obtained as 3280 ± 60 cal/mol.
EFFECTS OF CO-CATALYSTS ON THE DIMERIZATION OF ISOPRENE BY BIS(TRIPHENYLPHOSPHINE) NICKEL DICHLORIDE-AMINE-SODIUM BOROHYDRIDE SYSTEM
Authors: Mochida Isao , Kitagawa Kazunori , Fujitsu Hiroshi , Takeshita Kenjiro 
Published: July 2006

Abstract
A proper amount of water was found to enhance significantly the catalytic activity of Ni(PPh3)2Cl2–Amine-NaBH4 for the dimerization of isoprene. The principal products were linear dienes with n-propylamine, and cyclic ones with pyridine and its derivatives, respectively, but almost independent on the amount of water.
SYNTHESES OF [3.3] PARACYCLOPHANES AND THEIR HIGHER CYCLIC OLIGOMERS
Authors: Synmyozu Teruo , Kumagae Kimitaka , Inazu Takahiko , Yoshino Tamotsu 
Published: July 2006

Abstract
Tetraethyl [3.3] paracyclophane-2,2,11,11-tetracarboxylate, its 5,8-dimethyl and 5,6,8,9-tetramethyl homologues, and respective higher cyclic oligomer(s) were synthesized by condensation of tetraethyl p-diethylbenzene-ω,ω,ω′,ω′-tetracarboxylate with 1,4-bis(bromomethyl)-benzene, and its 2,5-dimethyl and 2,3,5,6-tetramethyl homologues in presence of sodium hydride under high dilution condition, respectively. 5,6,8,9-Tetramethyl[3.3]paracyclophane was obtained by hydrolysis, decarboxylative chlorination and reduction of tetraethyl 5,6,8,9-tetramethyl[3.3] paracyclophane-2,2,11,11-tetracarboxylate.
ELECTRON SPIN RESONANCE STUDY OF SPIN PROBES IN FROZEN AQUEOUS SOLUTIONS
Authors: Sato Eiji , Uematsu Shogo , Akahori Yukio 
Published: July 2006

Abstract
The ESR spectra of 12-nltroxlde stearic acid (12-NS) in frozen aqueous solutions of sodium hydroxide(1N∼0.005N) were examined in the temperature range from −22.0 to −0.1°C. The ESR line shapes of the spectra of 12-NS in ice exhibit two types spectra overlaped, a broad singlet and a sharp triplet. Some amounts of 12-NS molecules move rapidly in frozen aqueous solutions below the melting point of ice.
A NEW SYNTHESIS OF dl-VARIOTIN
Authors: Ishida Akihiko , Mukaiyama Teruaki 
Published: July 2006

Abstract
A new synthesis of dl-variotin (1) was accomplished by the reaction of 2-ethoxy-1-pyrroline and (2E,4E,6E)-8-hydroxy-6-methyl-2,4,6-dodecatrienoic acid (14), without protection of the hydroxyl group at C-8, utilizing 1-methyl-2-chloropyridinium iodide as a coupling reagent.
PROSTAGLANDINS AND CONGENERS XII. THE SYNTHESIS OF dl-THREO AND dl-THREO-15,16-DIHYDROXYPROSTAGLANDINS
Authors: Hallett W A , Wissner A , Grudzinskas CV , Weiss M J 
Published: July 2006

Abstract
An efficient first synthesis of all four dl-16-hydroxy-PGE2 racemates via conjugate addition of functionalized vinyl cuprates to a cyclopentenone is presented. Compounds in the PGA2 and PGF2α series are also described.
SYNTHESIS OF 1,2-PROPANEDIOL FORMATES FROM CARBON DIOXIDE, HYDROGEN, AND METHYLOXIRANE CATALYZED BY TRANSITION METAL COMPLEX
Authors: Koinuma Hideomi , Kato Hirohiko , Hirai Hidefumi 
Published: July 2006

Abstract
Glycol formates were prepared in a new type of catalytic reaction using carbon dioxide, hydrogen, and an oxirane as direct starting materials, and a transition metal complex like tris(triphenylphosphine)chlororhodium as catalyst.
1-ACETYL-2-THIOXO-4-IMIDAZOLIDINONES AS REACTIVE ACETYLATING AGENT
Authors: Sashio Minoru , Imono Shozo , Tanaka Makoto 
Published: July 2006

Abstract
Trans-acetylation of 1-acetyl-2-thioxo-4-imidazolidinones was investigated under mild and neutral conditions. It was found that the reagents were active toward amino group, but inactive toward hydroxy group.
THE FORMATION OF CYCLOPENT[cd]AZULENE AND BENZ[cd]AZULENE DERIVATIVES BY A FRIEDEL–CRAFTS-TYPE RING CLOSURE OF DIETHYL 4-PHENYLETHYNYL- AND DIETHYL 4-STYRYLAZULENE-1,3-DICARBOXYLATES WITH POLYPHOSPHORIC ACID
Authors: Nakadate Teruo , Morita Tadayoshi , Takase Kahei 
Published: July 2006

Abstract
Diethyl 4-phenylethynylazulene-1,3-dicarboxylate (3) undergoes a Friedel–Crafts-type ring closure on treatment with polyphosphoric acid to give the cyclopent[cd]azulene derivative (5). In a similar manner, diethyl 4-styrylazulene-1,3-dicarboxylate (4) gives the benz[cd]azulene derivative (8) and the cyclopent[cd]azulene derivative (9). Some chemical properties of 5 are described.
1H-NMR STUDY OF AEROSOL OT IN SOLUTION
Authors: Ueno Masaharu , Kishimoto Hiroshi , Kyogoku Yoshimasa 
Published: July 2006

Abstract
The solution states of Aerosol OT were studied by 1H-NMR measurements. In water two hydrocarbon chains of Aerosol OT molecules in monomeric state aggregate with each other with hydrophobic interactions as in micellar state.
DYE-SENSITIZED PHOTOOXYGENATION OF N,N-DIMETHYLBENZYLAMINE. SINGLET-OXYGEN PROCESS IN COMPETITION WITH TYPE I PROCESS
Authors: Inoue Kenzo , Saito Isao , Matsuura Teruo 
Published: July 2006

Abstract
Dye-sensitized photooxygenation of N,N-dimethylbenzylamine was shown to proceed by both singlet-oxygen and Type I mechanisms. The efficiency of each process was found to be strongly dependent on the type of photosensitizer.
REACTIONS OF S-METHYL THIOBENZOATE WITH METHYL TRIFLATE AND MAGIC METHYL. FORMATION OF BENZOIC TRIFLUOROMETHANESULFONIC ANHYDRIDE AND BENZOYLDIMETHYLSULFONIUM ION
Authors: Minato Hiroshi , Miura Takashi , Kobayashi Michio 
Published: July 2006

Abstract
The reactions of S-methyl thiobenzoate with methyl triflate and methyl fluorosulfate yielded benzoic trifluoromethanesulfonic anhydride and benzoyldimethylsulfonium ion, respectively. Both of these reactive intermediates were found to function as powerful benzoylating agents for an arene, amine, alcohol, and phenol.
PHOTOCHEMICAL REACTIONS OF p-DICYANOBENZENE WITH PRIMARY AND SECONDARY AMINES
Authors: Ohashi Mamoru , Miyake Kentaro 
Published: July 2006

Abstract
In sharp contrast with the cases of benzene or anthraceneprimary or secondary amine systems, photochemical reactions of p-dicyanobenzene with those amines take place at the α-positions instead of the N–H groups of amines via electron-transfer followed by proton-transfer.
STEREOSELECTIVITY IN ION-PAIR FORMATION. I. ASSOCIATION CONSTANTS OF Λ- AND Δ-[Co(en)3]3+ WITH l- AND MESO-TARTRATES FROM CD MEASUREMENTS
Authors: Yoneda Hayami , Taura Toshiaki 
Published: July 2006

Abstract
The ion association constants and the molar CD’s were determined for the ion pairs, Λ- AND Δ-[Co(en)3]3+ with l- and meso-tartrates, by utilizing CD measurements. The structures of these ion pairs were consistently interpreted in terms of the above two parameters. Furthermore, the results obtained here were compared with the chromatographic behaviors of these systems.
REINVESTIGATION ON THE CIDNP IN THE THERMOLYSIS OF DISPIRO[2.2.2.2]DECA-4,9-DIENE
Authors: Tsuji Takashi , Nishida Shinya 
Published: July 2006

Abstract
CIDNP in the thermolysis of dispiro[2.2,2.2]deca-4,9-diene and its derivative is reinvestigated and is found to be better explained in terms of S–T. mixing in the singlet biradical 3 rather than S–To mixing in 2, originally proposed.