bluuebunny/crossref_metadata_2025_split huggingface dataset:
6,6-DIMETHYL-6-SILAFULVENE. GENERATION AND TRAPPING REACTIONS
Authors: Nakadaira Yasuhiro , Sakaba Hiroyuki , Sakurai Hideki 
Published: July 2006

Abstract
6,6-Dimethyl-6-silafulvene generated from (allyl)(cyclopentadienyl)dimethylsilane reacts with a trapping reagent such as methanol, benzaldehyde, and benzophenone to give (cyclopentadienyl)(methoxy)dimethylsilane, 6-phenylfulvene, and 6,6-diphenylfulvene, respectively. Without a trapping reagent, the silafulvene undergoes dimerization.
1H- AND 13C-NMR OF LOW-SPIN TETRACYANOIRON(III) CHELATES FORMED WITH 1,2-DIAMINES OF FIXED CONFORMATIONS
Authors: Goto Masafumi , Takeshita Michihiro , Sakai Tomoya 
Published: July 2006

Abstract
Well resolved 1H- and 13C-NMR signals of the title compounds were assigned with the aid of change in chemical shift by varying the composition of the mixture of FeII and FeIII complexes of an identical set of ligands. Distinct differences in chemical shift between axial and equatorial protons of the chelate rings and 13C-isotropic shifts alternating in sign with each separation from FeIII center by C–C bond were observed.
SYNTHESIS OF 9,10-BENZOTETRACYCLO[5.3.0.02,4.03,5]DECA-1(7),9-DIEN-6-ONE, A VALENCE ISOMER OF BENZ[a]AZULEN-9(10H)-ONE
Authors: Sugihara Yoshikazu , Sugimura Takashi , Murata Ichiro 
Published: July 2006

Abstract
9,10-Benzotetracyclo[5.3.0.02,4.03,5]deca-1(7),9-dien-6-one (2), a valence isomer of benz[a]azulen-9(10H) -one (3), has been synthesized from 5,6-benzobicyclo [3.2.0] hepten-2-one utilizing the oxa-di-π-methane rearrangement.
FACILE SYNTHESIS OF α-FLUORO-β-KETOESTERS FROM POLYFLUOROALKENES
Authors: Ishikawa Nobuo , Takaoka Akio , Iwakiri Hiroshi , Kubota Satoshi , Kagaruki S R F 
Published: July 2006

Abstract
Alkyl 2-chloro-1,2,2-trifluoroethyl ketones and aryl 1,2,2,2-tetrafluoroethyl ketones were respectively prepared by the Friedel–Crafts acylation of trifluoroethene and by the Grignard arylation of N,N-diethyl-1,2,2,2-tetrafluoropropionamide, a hydrolyzed product of hexafluoropropene–diethylamine adduct. These alkyl and aryl polyfluoroalkyl ketones were subjected to base-induced dehydrohalogenation, and resulting trifluorovinyl ketones were hydrolyzed in situ affording α-fluoro-β-ketoesters in good yields.
TRANSFORMATION OF GRAYANOTOXIN II TETRAACETATE TO A 1,5-SECOGRAYANANE DERIVATIVE
Authors: Terai Tadamasa , Meguri Haruo , Hamanaka Nobuyuki , Matsuzaki Takao , Furusaki Akio , Kato Tsuyoshi , Matsumoto Takeshi 
Published: July 2006

Abstract
Irradiation of grayanotoxin II tetraacetate with UV light in the presence of lead tetraacetate in benzene afforded 1-epi-grayanol A pentaacetate in high yield.
DISTINCTIVE STRUCTURE-REACTIVITY SEQUENCES IN THE TYPE I AND TYPE II CYCLOADDITIONS OF CYCLOPROPYL-SUBSTITUTED ETHYLENE WITH TETRACYANOETHYLENE
Authors: Kataoka Fumio , Nishida Shinya 
Published: July 2006

Abstract
Structure-reactivity sequences of two cycloadditions, distinctive in pattern, between cyclopropylethylene and tetracyanoethylene were totally different. In the type I, a bulky group at C2 decreased the rate of the reaction, whereas, in the type II, bulky alkyls at C2 enhanced the reactivity. The results accommodate to a proposed scheme involving an electron transfer step.
REACTIONS OF SUBSTITUTED PYRIDINIUM N-IMINES WITH BENZYNE: SYNTHESES OF PYRIDO[1,2-b]INDAZOLES AND RELATED COMPOUNDS
Authors: Yamashita Yoshiro , Hayashi Takashi , Masumura Mitsuo 
Published: July 2006

Abstract
Reactions of benzyne with several pyridinium N-imines were examined. 2-o-Aminophenylpyridine derivatives 6, pyrido[1,2-b]indazoles (7), indazolo[2,3-a]quinoline (17), and indazolo[3,2-a]isoquinoline (18) were obtained by the reactions of benzyne with the corresponding ylides 5, 10, 15, and 16, respectively.
SURFACE DESIGN AND CATALYTIC ACTIVITIES OF WELL DEFINED, FIXED “Mo2” CATALYSTS—ACTIVE STRUCTURES FOR C3H6 METATHESIS
Authors: Iwasawa Yasuhiro , Kubo Hideo , Yamagishi Masahiko , Ogasawara Sadao 
Published: July 2006

Abstract
New fixed Mo2 catalysts with “paired” molybdenum species were prepared using Al2O3 and SiO2 find the active structure for C3H6 metathesis and the following order of activity for surface structures was found in comparison with the activities of fixed “single” Mo catalysts;
VENUSTIN A AND B, NEW HALOGENATED C15 METABOLITES FROM THE RED ALGA LAURENCIA VENUSTA YAMADA
Authors: Suzuki Minoru , Kurosawa Etsuro 
Published: July 2006

Abstract
Two new halogenated non-terpenoid C15 compounds, venustin A (1) and B (2), were isolated from the red alga Laurencia venusta Yamada. The structures of these compounds were determined by chemical and spectroscopic evidence.
ISOTHERMAL CHANGE OF THE SPECTRUM OF LOCALIZED ELECTRONS IN GLASSY 1-PROPANOL IRRADIATED AT 4 K
Authors: Ogasawara Masaaki , Shimizu Kunio , Yoshida Hiroshi 
Published: July 2006

Abstract
An isothermal change at 77 K of the absorption spectrum of electron localized at 4 K in glassy 1-propanol revealed the elementary steps responsible for the spectral shift from IR to the visible region: the rapid shift (from 1800 to 1650 nm) and decay of the IR peak were followed by a gradual shift (from 800 to 580 nm) and an increase of the visible peak. The results support the two-trapping site model previously proposed for alcoholic matrices.
PHOTOISOMERIZATION OF NORBORNADIENE TO QUADRICYCLANE IN THE PRESENCE OF COPPER(I)-NITROGEN LIGAND CATALYSTS
Authors: Maruyama Kazuhiro , Terada Kazutoshi , Naruta Yoshinori , Yamamoto Yoshinori 
Published: July 2006

Abstract
Use of copper(I)-nitrogen ligand catalysts, such as Ph3PCuCl.bipy (1), Ph3PCuCl.phen (2), Ph3PCuCl.phtha (3), and Ph3PCuBr.py (4), enables the photochemical isomerization of norbornadiene to quadricyclane in longer wavelength than 350 nm, in which CuCl catalyst itself can not induce such an isomerization.
(E)-γ-BISABOLEN-8,9-EPOXIDE AND ISOCYCLOEUDESMOL, TWO NEW SESQUITERPENOIDS FROM THE MARINE RED ALGA LAURENCIA NIPPONICA YAMADA1)
Authors: Suzuki Teruaki , Kikuchi Hajime , Kurosawa Etsuro 
Published: July 2006

Abstract
Two new sesquiterpenoids, (E)-γ-bisabolen-8,9-epoxide and isocycloeudesmol, have been isolated from L. nipponica Yamada (Rhodophyta, Rhodomelaceae) and their structures have been determined by spectroscopic and chemical evidences.
SURFACE STRUCTURES OF FIXED Cr CATALYSTS AND THEIR CATALYTIC ACTIVITIES FOR CO OXIDATION AND C3H6 HYDROGENATION
Authors: Iwasawa Yasuhiro , Ogasawara Sadao 
Published: July 2006

Abstract
Two types of active fixed Cr catalysts(Al2O3 and SiO2 supports) and surface structures of active sites are reported. Coordinatively unsaturated Cr2+ ions with three vacant positions in the “virgin” fixed catalyst showed a high activity for C3H6 hydrogenation Five-coordinated Cr3+ species with suitably strong exchange interaction between Cr3+ in a Cr3+–O–Cr3+ cluster of the “rearranged” fixed catalyst created by surface reconstruction were found to be active sites for CO oxidation.
HYDROGEN SEPARATION WITH ELECTROCHEMICAL CELL
Authors: Miura Norio , Ozawa Yoshihiro , Yamazoe Noboru , Seiyama Tetsuro 
Published: July 2006

Abstract
A new technique for hydrogen separation using a short-circuited electrochemical cell constructed by use of a solid electrolyte was described with preliminary experimental data. With phosphomolybdic acid as a proton conductor, a short-circuit current density of 7.4 mA/cm2 or a rate of hydrogen separation of 3.1 cm3/h·cm2-electrode, was attained experimentally.
SYNTHESIS OF PHTHALOCYANINES FROM PHTHALONITRILE WITH ORGANIC STRONG BASES
Authors: Tomoda Haruhiko , Saito Shojiro , Ogawa Shojiro , Shiraishi Shinsaku 
Published: July 2006

Abstract
In the presence of 1,8-diazabicyclo[5.4.0]undec-7-ene or 1,5-diazabicyclo[4.3.0]non-5-ene, metal-free phthalocyanine was obtained by heating phthalonitrile in alcohols. Addition of a copper(II) salt in the reaction gave copper phthalocyanine in a good yield.
THE EXAFS STUDY OF Cu(II) AQUEOUS SOLUTION USING A POSITION SENSITIVE DETECTOR
Authors: Sano Mitsuru , Taniguchi Kazuo , Yamatera Hideo 
Published: July 2006

Abstract
Extended X-ray absorption fine structure (EXAFS) spectroscopy has been applied to the study of an aqueous solution. An X-ray spectrum for 0.32 M Cu(CLO4)2 was measured by a multi-detection apparatus of laboratory scale with a usual X-ray tube and a position-sensitive detector and analyzed preliminarily by Fourier transformation method to give the Cu–O distances of 1.94 and 2.46 Å (assuming α = 0.39 Å), in agreement with the X-ray diffraction result.
SYNTHESES AND PROPERTIES OF TRIMETHYLBISDEHYDRO[21]ANNULENONE AND THE BENZANNELATED DERIVATIVES
Authors: Ojima Juro , Nakagawa Yukiko , Wada Kazuyo , Terasaki Masayuki 
Published: July 2006

Abstract
Syntheses of 2,9,14-trimethyl- 2, 14-methylbenzo[h]4, and 2-methyldibenzo[h,n]-10,12-bisdehydro[21]annulenone 5 are described. The effect of α-methyl substitution and benzannelation for the bisdehydro[21]annulenone ring sytem are discussed.
SYNTHESIS OF (+)-DEOXYVERNOLEPIN
Authors: Watanabe Masataka , Yoshikoshi Akira 
Published: July 2006

Abstract
2,3,3aα,4,5,5a,6,9,9aα,9bβ-Decahydro-3α,9α-dimethyl-5aβ-methoxycarbonyl-2-oxonaphtho[2,3-b]furan (2) accessible from α-santonin was transformed into (+)-deoxyvernolepin (1). The preparation of some α-methylenelactones related to 1 has also been described.
ELECTRON SPIN RESONANCE STUDY OF ARYLDIAZENYL RADICALS IN SOLUTION
Authors: Suehiro Tadashi , Tashiro Takaaki , Nakausa Ryuichi 
Published: July 2006

Abstract
Esr spectra of phenyl- and p-substituted phenyl-diazenyl radicals in solution give aN1 \backsimeq 23 G, aN2 - 9.4 G, and aH \backsimeq 1.1 G (two meta hydrogens), suggesting a free rotation of the N1=N2 group around the C1–N1 bond. o-Monosubstituted phenyldiazenyl radicals prefer to take a planar conformation, and show a hyperfine coupling constant of only one meta hydrogen-5.
REGIOSPECIFIC ALLYLATION OF SULFUR SUBSTITUTED ACTIVE METHYLENE COMPOUNDS WITH ALLYLIC BROMIDES
Authors: Ono Noboru , Miyake Hideyoshi , Tanabe Yo , Tanaka Kazuhiko , Kaji Aritsune 
Published: July 2006

Abstract
Allylation sulfur substituted active methylene compounds such as RSCH2Y [Y = C(=O)R, COOR, CN] with allylic bromides in the presence of bases gives a mixture of the SN2-product and the apparent SN2′-product. The former product is selectively obtained in alkylation in a nonpolar solvent. Synthetic utility of this regiospecific allylation is demonstrated in the simple synthesis of pellitorine.
TOPOLOGY OF TECTOSILICATE FRAMEWORK
Authors: Sato Mitsuo , Ogura Toshihiko 
Published: July 2006

Abstract
A new concept of coordination network is introduced for classifying and deriving possible frameworks of tectosilicates. 26 topologically different networks have been derived by connecting points with the degree of freedom 3 in the 2nd distance. 39 different tectosilicate structures are examined in view of this coordination network.
A PRELIMINARY STUDY ON CONFORMATIONAL ANALYSIS OF ION PAIRS CONTAINING [Co(en)3]3+
Authors: Yoshikawa Yuzo 
Published: July 2006

Abstract
The conformational analysis was performed for the systems of the ion pairs, Λ-[Co(en)3]3+–ClO4−–, – SO42−– , –PO43−–, and -tart2−- nH2O. The analysis of the Λ-[Co(en)3]3+ - tart2− - 25H2O systems gave the results consistent with the experimental data of the stereoselective ion associations, in which the approximation of a dielectric constant dependent on inter-charge distance was made. The structures of Λ-[Co(en)3]3+ -tart2− suggest that two hydroxyl groups of a tartrate ion play an important role.
STEREOSELECTIVE SYNTHESIS OF MESO(OR ERYTHRO) 1,3-DIOLS FROM β-HYDROXYKETONES
Authors: Narasaka Koichi , Pai Hong Chang 
Published: July 2006

Abstract
Meso(or erythro) 1,3-diols are prepared in high stereoselectivity from β-hydroxyketones by the treatment with tributylborane and the successive reduction with sodium borohydride.
REGIOSELECTIVE PARA-CHLORINATION OF ALKYLBENZENES ON CHEMICALLY-MODIFIED SILICA SURFACES
Authors: Konishi Hisatoshi , Yokota Kiyoshi , Ichihashi Yuji , Okano Tamon , Kiji Jitsuo 
Published: July 2006

Abstract
Chlorination of alkylbenzenes was carried out with chlorine in carbon tetrachloride in the presence of chemically-modified silica catalysts. The para/ortho ratios were remarkably higher than those obtained in the FeCl3-catalyzed chlorination. t-Butylbenzene was chlorinated at para-position almost exclusively. The catalyst could be reused several times.
FULVALENE TYPE COMPOUNDS CONTAINING 1,3-DITHIEPIN COUNTERPART. QUALITATIVE EVALUATION OF THE ELECTRON ACCEPTING ABILITY OF 1,3-DITHIEPIN SYSTEM
Authors: Sugihara Yoshikazu , Fujiyama Yoshiko , Murata Ichiro 
Published: July 2006

Abstract
Some fulvalenoids containing 1,3-dithiepin counterpart (5a), (5b), and (5c) have been synthesized through the reaction of 2-trimethylsilyl-1,3-dithiepinide ion (6) with di-tert-butyl-cyclopropenone, 2,3;6,7-dibenzotropone, and fluorenone, respectively. Comparison of the 1H-NMR spectra of these fulvalenes indicated the electron accepting ability of the 1,3-dithiepin moiety.
DIPHOSPHORUS TETRAIODIDE AS A MILD AND EFFICIENT REAGENT FOR THE DEOXYGENATION OF SULFOXIDES
Authors: Suzuki Hitomi , Sato Naofumi , Osuka Atsuhiro 
Published: July 2006

Abstract
By treatment with diphosphorus tetraiodide in dichloromethane at room temperature, sulfoxides are rapidly deoxygenated to the corresponding sulfides in high yields.
SOME EFFECTS OF R(R=Li,Na AND K) IONS ON CRYSTAL GROWTH OF RNd(WO4)2 CRYSTALS FROM TERNARY SYSTEMS Nd2O3–WO3–R2CO3
Authors: Oishi Shuji , Tate Isao 
Published: July 2006

Abstract
RNd(WO4)2(R=Li,Na and K) crystals were grown from high-temperature solutions of ternary systems Nd2O3–WO3–R2CO3 by slow cooling. Grown RNd· (WO4)2(R=Li and K) crystals were generally bigger than NaNd(WO4)2 crystals. These crystals, whose shapes were octahedron or decahedron, were reddish purple and mostly transparent. Among these tungstate crystals, NaNd(WO4)2 crystals had the highest melting point of 1235±5°C.
POTENTIAL ENERGY SURFACE OF [Cu(H2O)6]2+ AND [Zn(H2O)6]2+ DERIVED FROM AB INITIO MO CALCULATIONS
Authors: Sano Mitsuru , Yamatera Hideo 
Published: July 2006

Abstract
Ab initio molecular orbital calculations on [Cu(H2O)6]2+ and [Zn(H2O)6]2+ have been carried out to obtain the metal-oxygen bond lengths. The calculated results are in qualitative agreement with the expectation from the Jahn-Teller theorem; a distorted octahedron for Cu2+ and a regular octahedron for Zn2+. However, the preference for an elongated octahedron observed in the Cu2+ complex was not shown by the present calculation.
TEMPERATURE DEPENDENCE OF ACTIVATION VOLUME FOR ACETOLYSIS OF 2-ARYL-2-METHYLPROPYL TOSYLATES
Authors: Sera Akira , Yamada Hiroaki , Masaki Hitoshi 
Published: July 2006

Abstract
The activation volume of the acetolysis of the title compounds was found to have an unexpectedly large temperature dependence. The activation volume—temperature profile of a steep concave was observed which was responsible for the previously reported anomaly of the substituent dependence of the activation volume.
DIANION OF N-(o-METHOXYPHENYL)-2-METHYLPROPENAMIDE: A NEW REAGENT FOR THE CONVENIENT SYNTHESIS OF α-METHYLENE-γ-BUTYROLACTONES FROM CARBONYL COMPOUNDS
Authors: Tanaka Kazuhiko , Nozaki Yoshihito , Tamura Norikazu , Tanikaga Rikuhei , Kaji Aritsune 
Published: July 2006

Abstract
Dianion of N-(o-methoxyphenyl)-2-methylpropenamide was successfully generated on treatment of the amide with t-BuOK–BuLi at −78°C in THF and utilized as the key reagent for the synthesis of γ-substituted α-methylene-γ-butyrolactones.
THE SYNTHESES AND ABSOLUTE CONFIGURATIONS OF FOMANNOXIN, (−)-5-ACETYL-2-(1-HYDROXYMETHYLVINYL)-2,3-DIHYDROBENZOFURAN, AND ANODENDROIC ACID
Authors: Kawase Yoshiyuki , Yamaguchi Seiji , Inoue Osamu , Sannomiya Michiko , Kawabe Kazuko 
Published: July 2006

Abstract
The title compounds were synthesized from (−)-(S)- or (+)-(R)-2,3-dihydrobenzofuran-2-carboxylic acid. And their absolute configurations were determined.
A HIGHLY EFFICIENT AND RECYCLABLE CHIRAL DIRECTOR FOR ASYMMETRIC SYNTHESIS OF SULFOXIDES
Authors: Hiroi Kunio , Sato Shuko , Kitayama Ryuichi 
Published: July 2006

Abstract
The benzoxathiazine 2-oxide derivatives (2a–f) were prepared by reaction of the aminophenols (1a–f) with thionyl chloride in good yields. Equilibrium of 2a (R1=α-C10H7, R2=CH3) with hydrogen chloride and subsequent reaction with phenylmagnesium bromide followed by action of methyl- or butyllithium gave (S)-(−)-4a or (S)-(−)-4b with high enantiomeric excess, respectively.
NUCLEOPHILIC SUBSTITUTION OF ALCOHOL AT PHOSPHORUS OF SPIRO ACYLOXYPHOSPHORANE: TRANSPHOSPHORANYLATION
Authors: Kobayashi Shiro , Narukawa Yukitoshi , Hashimoto Takatsugu , Saegusa Takeo 
Published: July 2006

Abstract
Spiro acyloxyphosphoranes (S-AOPs, 1 and 3) underwent the nucleophilic substitution of alcohols at the phosphorus atom to give another S-AOPs (2) (Transphosphoranylation). Reaction mechanism and characteristics of the transphosphoranylation are described.
OXYMERCURATION-DEMERCURATION OF 6-METHYLENETRICYCLO[3.2.1.02,7]OCT-3-EN-8-ONE DERIVATIVES. AN EFFICIENT SYNTHESIS OF 2,4-CYCLOHEXADIENONE DERIVATIVES
Authors: Nitta Makoto , Omata Akihiko , Sugiyama Hiroshi 
Published: July 2006

Abstract
Oxymercuration-sodium borohydride reduction of 1,5-dimethyl-and 1,3,5-trimethyl-6-methylenetricyclo[3.2.1.02,7]oct-3-en-8-one was found to give 6-acetonyl-2,6-dimethyl- and 6-acetonyl-2,4,6-trimethyl-2,4-cyclohexadienones in good yields. The possible intermediates and the reaction mechanism were studied.
ISOLATION AND STRUCTURE OF NEODICTYOPROLENE, A NEW C11-COMPOUND OF BIOGENETIC SIGNIFICANCE FROM A BROWN ALGA DICTYOPTERIS PROLIFERA
Authors: Yamada Kiyoyuki , Ojika Makoto , Tan Hiroaki 
Published: July 2006

Abstract
Neodictyoprolene isolated as a trace component of a brown alga Dictyopteris prolifera was shown to be the acetate of cis, cis-1,5,8-undecatrien-3-ol postulated to be a pivotal biosynthetic intermediate leading to biologically active C11-substances such as sex attractants of brown algae (e.g., ectocarpene).
SYNTHESIS OF NOVEL PROSTANOIDS HAVING A CYCLOPENTA[c]FURAN STRUCTURE WITH A HEMITHIOACETAL SIDE CHAIN FROM AUCUBIN
Authors: Ohno Kiyotaka , Naruto Masanobu 
Published: July 2006

Abstract
The titled prostanoids, methyl (Z)-7-[(3aR,5S,6R,6aR)-1-(2-substituted-2-hydroxyethylthio)-5-hydroxy-hexahydro-1H-cyclopenta[c]furan-6-yl]-5-heptenoates, were prepared from aucubin via hemi-thioacetalization in construction of the alkyl-end (C13–C20) side chain.
A FACILE PREPARATION OF ASYM-MONOMETHYL, SYM-MONOMETHYL AND ASYM-DIMETHYL CITRATE
Authors: Hirota Kazuhiro , Kitagawa Harukazu , Shimamura Michiya , Ohmori Shinji 
Published: July 2006

Abstract
Asym-monomethyl citrate was prepared by hydrolysis of sym-dimethyl citrate. Sym-monomethyl and asym-dimethyl citrate were prepared by a selective hydrolysis of trimethyl citrate.
REACTION OF COBALOXIME(I), WITH 2-ALLYLOXYETHYL HALIDES. EVIDENCE FOR AN ELECTRON TRANSFER MECHANISM
Authors: Tada Masaru , Okabe Masami 
Published: July 2006

Abstract
Reaction of Cobaloxime(I), (CoI)− , with 2-allyloxyethyl halides (1, 2, and 3) gave cyclized organocobaloximes (5) formed by intramolecular rearrangement of 2-allyloxyethyl radicals to (3-tetrahydrofuranyl)methyl radicals. The intermediate radical must be formed by an electron transfer process which competes with an SN2 reaction to give a non-cyclized organocobaloximes.
A KINETIC STUDY ON THE PROTON-TRANSFER REACTIONS OF m- AND p-NITROPHENYLAZOSALICYLIC ACIDS COUPLED WITH INCLUSION REACTIONS WITH β-CYCLODEXTRIN IN AQUEOUS SOLUTIONS
Authors: Yoshida Noboru , Fujimoto Masatoshi 
Published: July 2006

Abstract
A kinetic study on the proton-transfer reactions of the title compounds coupled with inclusion reactions with β-cyclodextrin in aqueous solutions is carried out by means of a temperature-jump method. The forward rate constants for the inclusion reactions are in the order of magnitude 106 mol−1 dm3 s−1. The rate constants for the recombination of the title compounds with OH− ion increase in the concentrations of β-cyclodextrin.
REACTION OF 1-SUBSTITUTED INDOLES WITH CARBOXYLIC ACIDS AND N-IODOSUCCINIMIDE
Authors: Kwon Sundo , Kuroki Nobuhiko 
Published: July 2006

Abstract
1-Substituted indoles reacted with carboxylic acids and N-iodosuccinimide to give 1-substituted-2,3-diacyloxyindolines in significant yields.
LIQUID PHASE CO-AMMONOLYSIS OF PHENOL AND CYCLOHEXANOL WITH PALLADIUM-ON-CARBON CATALYST
Authors: Hamada Hideaki , Yamamoto Makoto , Matsuzaki Takehiko , Wakabayashi Katsuhiko 
Published: July 2006

Abstract
In the presence of Pd/C catalyst, phenol and cyclohexanol are aminated simultaneously to aniline and cyclohexylamine by ammonolysis, while conversion of phenol or cyclohexanol alone is very poor. It is suggested that this amiantion is caused by hydrogen transfer between phenol and cyclohexanol. Ru/C, Rh/C, and Pt/C are ineffective for this co-amination.
HEXAAMMINECOBALT(III)-HYDROGEN ION-EXCHANGE ON CRYSTALLINE ZIRCONIUM PHOSPHATE
Authors: Hasegawa Yoshitsugu , Kizaki Seiichi 
Published: July 2006

Abstract
The ion-exchange reaction was studied by the batch method at 75 °C. The reaction proceeded in the pH region of 3–6. The analysis of the exchanged solid showed that Co(NH3)63+ exchanged with the protons in the exchanger, and that two phases, the cobalt complex form and α-zirconium phosphate, were present in the solid.
REACTIONS OF 9-NITROANTHRACENE WITH THIOLS IN LIQUID AMMONIA
Authors: Takikawa Yuji , Abe Toshihiko , Sato Ryu , Takizawa Saburo 
Published: July 2006

Abstract
Anthrylsulfides were obtained in high yields in the reactions of 9-nitroanthracene 1 with thiols. The reactions with thiolates resulted in the formation of aci-9,9′-dinitro-10,10′-dihydro-10,10′-bianthryl 2 via a 9-nitroanthracene anion radical.
AZETIDINE-2,4-DIONES VIA PHOTOCYCLIZATION OF N-FORMYL-N-METHYL α,β-UNSATURATED AMIDES
Authors: Maruyama Kazuhiro , Ishitoku Takeshi , Kubo Yasuo 
Published: July 2006

Abstract
Upon irradiation N-formyl-N-methylcyclohexene-1-carboxamide (2a) cyclized to give N-methylcyclohexane-l,1-dicarboximide (3a) in a high yield. The reaction proceeds via intramolecular hydrogen abstraction. Similarly, several other alkyl-substituted azetidine-2,4-diones were synthesized.
A SIMPLE, HIGHLY VERSATILE SYNTHESIS OF CYCLOPROPYL PHENYL SULFIDES
Authors: Tanaka Kazuhiko , Uneme Hideki , Matsui Syuichi , Tanikaga Rikuhei , Kaji Aritsune 
Published: July 2006

Abstract
1,3-Bis(phenylthio)propane reacted readily with 2–2.2 equiv. of n-butyllithium in THF at 0°C to afford 1-lithiocyclopropyl phenyl sulfide. Treatment of the substituted 1,3-bis(phenylthio)propanes with 1.1 equiv. of n-butyllithium afforded the corresponding cyclopropanes in good yields.
TRACE CHARACTERIZATION OF THE FLUORESCENT SUBSTANCES OF A DINOFLAGELLATE, NOCTILUCA MILIARIS
Authors: Inoue Shoji , Okada Kunisuke , Tanino Hideo , Kakoi Hisae , Goto Toshio 
Published: July 2006

Abstract
Two fluorescent substances isolated from Noctiluca miliaris were identified as harman and norharman which were first examples isolated from marine sources.
A NEW SYNTHESIS OF WATASENIA PRELUCIFERIN BY CYCLIZATION OF 2-AMINO-3-BENZYL-5-(p-HYDROXYPHENYL)PYRAZINE WITH p-HYDROXYPHENYLPYRUVIC ACID
Authors: Inoue Shoji , Okada Kunisuke , Tanino Hideo , Kakoi Hisae 
Published: July 2006

Abstract
The reaction of 2-amino-3-benzyl-5-(p-hydroxyphenyl)pyrazine with p-hydroxyphenylpyruvic acid gave directly Watasenia preluciferin in a satisfactory yield without any reductive treatment.
SOLVENT EFFECT ON CARBONYL 13C HYPERFINE SPLITTING OF FREE ANION RADICAL OF 9-FLUORENONE: A MEASURE FOR ANION SOLVATION POWER OF APROTIC SOLVENTS
Authors: Nakamura Kazuo 
Published: July 2006

Abstract
The carbonyl 13C splitting of the free anion radical of 9-fluorenone was examined with eight solvents including pyridine to exhibit a large solvent dependence: 3.20 gauss in dimethylsulfoxide to 1.76 gauss in hexamethylphosphoric amide. A linear relationship between Gutmann’s acceptor number (AN) and 13C splitting (ac), as expressed by ac=0.16 AN + 0.06 (gauss), was found.