bluuebunny/crossref_metadata_2025_split huggingface dataset:
SYNTHESIS AND MAGNETIC PROPERTY OF COBALT(II)-MANGANESE(II) AND COBALT(II)-IRON(II) HETERO-METAL COMPLEXES WITH N,N′-BIS(3-CARBOXYSALICYLIDENE)ALKANEDIAMINES
Authors: Torihara Naoyuki , Okawa Hisashi , Kida Sigeo 
Published: July 2006

Abstract
CoMn(fsaen)(py)3, CoMn(fsapn)(py)3 and CoFe(fsapn)(py)3 (H fsaen=N,N′-bis(3-carboxysalicylidene)ethylenediamine, H4fsapn=N,N′-bis(3-carboxysalicylidene)propylenediamine) were synthesized and characterized. Cryomagnetic measurements indicated no spin-exchange interaction operating between the low-spin cobalt(II) and high-spin manganese(II) or iron(II) ions.
SYNTHETIC METHOD OF FUNCTIONALIZED UNSYMMETRICAL SULFIDES AND DISULFIDES USING DIPHENYLPHOSPHINODITHIOATES
Authors: Yoshifuji Masaaki , Hanafusa Fumito , Inamoto Naoki 
Published: July 2006

Abstract
Various kinds of diphenylphosphinodithioates were prepared and allowed to react with some organolithium compounds under mild reaction conditions to give functionalized unsymmetrical sulfides and disulfides in good yields.
PREPARATION OF A NOVEL AMMINEBROMOCYANO[1,4,7-TRIAZACYCLONONANE]COBALT(III) COMPLEX
Authors: Shimba Satoru , Fujinami Shuhei , Shibata Muraji 
Published: July 2006

Abstract
A new complex [Co(Br)(CN)(NH3)(1,4,7-triazacyclononane)]Cl, which exhibits a novel optical isomerism due to the arrangement of unidentate ligands, has been prepared, and the optical resolution of the complex has been achieved by means of column chromatography.
SYNTHESIS OF OPTICALLY ACTIVE 4-AMINO-2-(HYDROXYMETHYL)TETRAHYDROFURAN-4-CARBOXYLIC ACIDS
Authors: Yoshimura Juji , Kondo Shiro , Ihara Masaki , Hashimoto Hironobu 
Published: July 2006

Abstract
It was proved that optically active 4-amino-2-(hydroxymethyl)tetrahydrofuran-4-carboxylic acid (1) isolated from acid hydrolysate of diabetic urine has (2S,4S) configuration by synthesis of (2S)-diastereomers from d-ribose.
RACEMIZATION IN PEPTIDE SYNTHESIS BY THE UGI REACTION
Authors: Waki Michinori , Minematsu Yoshihiro , Meienhofer Johannes , Izumiya Nobuo 
Published: July 2006

Abstract
The Izumiya test for racemization in peptide synthesis was applied to examine the effect of solvent and temperature on racemization in the synthesis of a tripeptide derivative by the Ugi reaction (four-component condensation). Almost no racemization was observed under the reaction conditions using methanol and at low temperature.
REGIO- AND STEREOCONTROLLED POLYPRENYLATION OF QUINONES. A NEW SYNTHETIC METHOD OF COENZYME Q2, Q3, Q9, AND Q10
Authors: Naruta Yoshinori , Maruyama Kazuhiro 
Published: July 2006

Abstract
A new regio- and stereocontrolled synthesis of coenzyme Qn (n=2, 3 9, 10) is described. Coupling of geranyltrimethyltin with 2,3-dimethoxy-5-methylbenzoquinone was successfully undertaken in the presence of BF3·OEt2. After oxidation of the resulting mixture coenzyme Q2 was obtained in 90% overall yield with &gt;99% Δ2-trans stereochemistry. Similary, all- trars-coenzyme Q9 and Q10 were obtained in reasonable yields.
TRITHIOPEROXYBENZOATO(η3-DITHIOBENZOATO)OXOMOLYBDENUM(IV), MoO(S3CPh)(η3-S2CPh): SYNTHESIS AND X-RAY MOLECULAR STRUCTURE
Authors: Tatsumisago Masahiro , Matsubayashi Gen-etsu , Tanaka Toshio , Nishigaki Satoshi , Nakatsu Kazumi 
Published: July 2006

Abstract
The titled novel complex was obtained by the reaction of sodium molybdate(VI) dihydrate with diethylammonium dithiobenzoate in an acidic aqueous medium. An X-ray structure analysis of this complex has revealed the presence of trithioperoxybenzoato and η3 -dithiobenzoato ligands both coordinated to oxomolybdenum(IV).
MAGNETIC BEHAVIOR OF FIVE-COORDINATE COBALT(III) COMPLEX OF α,β,γ,δ-TETRAPHENYLPORPHIN
Authors: Yamamoto Kiyoko , Uzawa Jun , Chijimatsu Tamiko 
Published: July 2006

Abstract
1H NMR spectrum of chloro-α,β,γ,δ-tetraphenylporphinatocobalt(III) in inert solvent was found to show unusual temperature dependence. The signals became broad by raising the temperature in reversible manner. The compound is diamagnetic in solid state, and the observed temperature dependence was attributed to the partial transformation of the compound in the solution to a paramagnetic species with increased temperature. The formation of paramagnetic species was verified by magnetic moment measurement in the same solution.
ASYMMETRIC HYDROGENATION OF α-ACYLAMINOCINNAMIC ACID DERIVATIVES CATALYZED BY AMINOPHOSPHINE-RHODIUM COMPLEX. INVERSION IN THE STEREOSELECTIVITY OF THE AMINOPHOSPHINE-RHODIUM COMPLEX CATALYST BY N-METHYLATION OF THE LIGAND
Authors: Onuma Ken-ichi , Ito Tomiyasu , Nakamura Asao 
Published: July 2006

Abstract
Marked difference in the stereoselectivity of the rhodium complex with (1R,2R)-bis(diphenylphosphinamino)cyclohexane caused by N-methylation of the ligand in the asymmetric hydrogenation of α-acylaminocinnamic acid derivatives is described.
DIRECT CONVERSION OF ARYLAMINES TO THE CORRESPONDING HALIDES, BIPHENYLS AND SULFIDES WITH t-BUTYL THIONITRATE
Authors: Oae Shigeru , Shinhama Koichi , Kim Yong Hae 
Published: July 2006

Abstract
Reactions of various arylamines with t-butyl thionitrate gave various deaminative substitution products in good yields. t-Butyl thionitrate was found to be a better deaminative reagent than alkyl nitrites.
SYNTHESIS AND STEREOCHEMISTRY OF α-BISABOLOL
Authors: Iwashita Takashi , Kusumi Takenori , Kakisawa Hiroshi 
Published: July 2006

Abstract
Intramolecular addition reaction of nitrone (3) derived from (6E)-farnesal and N-methylhydroxylamine afforded isoxazolidines (4a, 4b), methyl amino group of which was removed by a series of reactions to obtain the stereoisomer (8) of α-bisabolol. Synthesis from (6Z)-farnesal by the same method afforded α-bisabolol, which established the stereochemistry of (−)-α-bisabolol as (17).
A NEW ALLYLATION REACTION OF THE COPPER(I) SALT OF ENAMINES WITH 2-ALLYLOXYBENZIMIDAZOLES
Authors: Yamaguchi Masahiko , Murakami Masahiro , Mukaiyama Teruaki 
Published: July 2006

Abstract
The allylation of the copper(I) salt of enamines with 2-allyloxybenzimidazoles followed by hydrolysis afforded unsaturated ketones in good yields.
AZO-CROWN ETHERS. THE DYES WITH AZO GROUP DIRECTLY INVOLVED IN THE CROWN ETHER SKELETON
Authors: Shiga Masanobu , Takagi Makoto , Ueno Keihei 
Published: July 2006

Abstract
Crown-type polyether azo dyes 1∼3 were synthesized, and the ion-pair extraction of sodium and potassium ion was studied. The extraction behavior resembles those of benzo-type crown ethers, but changes on light illumination due to trans–cis isomerization of the dyes. The cis-form lacks the affinity to metal ions.
APPLICATION OF PHOTOACOUSTIC SPECTROSCOPY FOR IN SITU MEASUREMENT OF SEMICONDUCTOR ELECTRODE REACTIONS
Authors: Masuda Hideki , Fujishima Akira , Honda Kenichi 
Published: July 2006

Abstract
An application of photoacoustic spectroscopy (PAS) for semiconductor electrode reactions is described. A cathodic decomposition of a CdS single crystal electrode and an electrochemical deposition of Cd2+ on the CdS electrode were measured by PAS technique in situ.
FORMATION OF DISK-LIKE AGGREGATES FROM SINGLE-CHAIN PHOSPHOCHOLINE AMPHIPHILES IN WATER
Authors: Okahata Yoshio , Ihara Hirotaka , Shimomura Masatsugu , Tawaki Shin-ichiro , Kunitake Toyoki 
Published: July 2006

Abstract
Single-chain phosphocholine amphiphiles which possess rigid segments in the hydrophobic portion formed disk-like aggregates, which are different from lecithin vesicles. When the rigid segment was azobenzene unit, trans-to-cis isomerization changed some membrane characteristics.
HIGHLY STEREOSELECTIVE SYNTHESIS OF TRISUBSTITUTED OLEFINS FROM ALKENYL ARYL SULFOXIDES
Authors: Takei Hisashi , Sugimura Hideyuki , Miura Morikazu , Okamura Hisashi 
Published: July 2006

Abstract
Alkenyl aryl sulfoxides could be alkylated stereoselectively via their lithium salts to afford α-alkylated (E)-alkenyl sulfoxides. Reduction of the sulfoxides to the corresponding sulfides followed by nickel–phosphine complexes catalyzed coupling reaction with Grignard reagents gave trisubstituted olefins.
STRUCTURE OF (+)-KJELLMANIANONE, A HIGHLY OXYGENATED CYCLOPENTENONE FROM THE MARIN ALGA, SARGASSUM KJELLMANIANUM
Authors: Nakayama Mitsuru , Fukuoka Yoshie , Nozaki Hiroshi , Matsuo Akihiko , Hayashi Shûichi 
Published: July 2006

Abstract
The structure and absolute configuration of a new cyclopentenone derivative, (+)-kjellmanianone, isolated from the brown alga Sargassum kjellmanianum has been determined as 5-carbomethoxy-5-hydroxy-3-methoxy-2-cyclopenten-1-one on the basis of the chemical and spectroscopic evidence and the X-ray analysis.
SYNTHESIS OF β-d-GLUCOPYRANOSYLVALIDAMINE: 2-O-β-d-GLUCOPYRANOSYL-1l-(1,3,4/2,6)-4-AMINO-6-HYDROXYMETHYL-1,2,3-CYCLOHEXANETRIOL
Authors: Ogawa Seiichiro , Shibata Yasuhito , Chida Noritaka , Suami Tetsuo 
Published: July 2006

Abstract
β-d-Glucopyranosylvalidamine (1a), the structure of which was assigned to the degradation product of validamycin A, was synthesized by condensation of a protected validamine (8) with acetobromoglucose, followed by deblocking. Unexpectedly, 1a was found not to be identical with an authentic sample derived from the antibiotic.
SYNTHESIS AND SOME REACTIONS OF 1-ADAMANTYL TRIFLUOROMETHANESULFONATE
Authors: Takeuchi Ken’ichi , Moriyama Takamasa , Kinoshita Tomomi , Tachino Hitoshi , Okamoto Kunio 
Published: July 2006

Abstract
1-Adamantyl trifluoromethanesulfonate (1) has been prepared from 1-bromoadamantane and silver trifluoromethanesulfonate in 2,2-dimethylbutane. The trifluoromethanesulfonate (1) abstracts hydride from pentane or hexane to form adamantane, initiates ring-opening polymerization of tetrahydrofuran, and reacts with alkyllithiums to afford 1-alkyladamantanes.
STRUCTURE OF SARGASSUMLACTAM, A NEW β,γ-UNSATURATED-γ-LACTAM, FROM THE MARINE ALGA SARGASSUM KJELLMANIANUM
Authors: Nozaki Hiroshi , Fukuoka Yoshie , Matsuo Akihiko , Soga Osamu , Nakayama Mitsuru 
Published: July 2006

Abstract
A new dehydro-γ-lactam, sargassumlactam, has been isolated from the brown alga Sargassum kjellmanianum, and its structure was determined to be 4,5-dehydro-3-methoxy-3,5-dimethoxycarbonyl-2-pyrrolidone by the spectroscopic and X-ray diffraction analysis.
AN EFFICIENT METHOD FOR THE PREPARATION OF HOMOALLYLIC ALCOHOL DERIVATIVES BY THE REACTION OF ALLYL IODIDE WITH CARBONYL COMPOUNDS IN THE PRESENCE OF STANNOUS HALIDE
Authors: Mukaiyama Teruaki , Harada Taira , Shoda Shin-ichiro 
Published: July 2006

Abstract
Allyl iodide reacts in situ under mild conditions with stannous halide to form allyltin dihaloiodide, which in turn reacts with carbonyl compounds in an aprotic solvent to give the corresponding homoallylic alcohol derivatives in good yields.
FLUORESCENCE DECAY OF 3,3′-DIETHYLTHIACARBOCYANINE IODIDE-SODIUM LAURYL SULFATE SYSTEM: DEAGGREGATION OF THE DYE AND DYE-DETERGENT AGGREGATE FORMATION ABOVE AND BELOW THE CRITICAL MICELLE CONCENTRATION
Authors: Sato Hiroyasu , Kawasaki Masahiro , Kasatani Kazuo , Kusumoto Yoshihumi , Nakashima Nobuaki , Yoshihara Keitaro 
Published: July 2006

Abstract
Fluorescence decay of 3,3′-diethylthiacarbocyanine iodide was studied in aqueous solutions of sodium lauryl sulfate. The large change in decay behavior is attributed to the deaggregation of the dye and the formation of the dye-detergent aggregate above and below the critical micelle concentration, respectively.
ISOLATION OF AMMINE(8-QUINOLINOLATO)COBALT(III) CHLORIDE
Authors: Yamamoto Yoshihisa 
Published: July 2006

Abstract
Tetraammine(8-quinolinolato)cobalt(III) chloride hydrate and diamminebis(8-quinolinolato)cobalt(III) chloride hydrate have been isolated and characterized by analytical and spectroscopic methods.
SYNTHESIS OF HEXA-N,O-ACETYL-Dl-HYDROXYVALIDAMINE
Authors: Ogawa Seiichiro , Chida Noritaka , Suami Tetsuo 
Published: July 2006

Abstract
Dl-(1,3,4/2,5,6)-4-Amino- 6-hydroxymethyl-1,2,3,5-cyclohexanetetrol (Dl-hydroxyvalidamine) was first synthesized as the peracetate, which confirmed the proposed structure of the branched-chain aminocyclitol derived by hydrogenolysis of antibiotic validamycin B, followed by acid hydrolysis.
THE RUTHENIUM COMPLEX-CATALYZED REDUCTION OF KETONES BY FORMIC ACID
Authors: Watanabe Yoshihisa , Ota Tetsuo , Tsuji Yasushi 
Published: July 2006

Abstract
An equimolar mixture of a ketone and formic acid was heated without solvent at 125°C for 3 h in the presence of a catalytic amount of dichlorotris(triphenylphosphine)ruthenium(II) to give the corresponding secondary alcohols in excellent yields.
A FACILE SYNTHESIS OF 4-HYDROXYINDOLE VIA ELECTROCHEMICAL OXIDATIVE C–C COUPLING
Authors: Torii Sigeru , Uneyama Kenji , Onishi Takashi , Fujita Yoshiji , Ishiguro Michihiro , Nishida Takashi 
Published: July 2006

Abstract
4-Hydroxyindole (1a), a useful intermediate for Pindolol (1b), has been prepared via electrooxidative coupling of 1,3-cyclohexadione with ethyl vinyl ether followed by ammonolysis and dehydrogenation.
A ONE-STEP PREPARATION OF 2,3-ANHYDRO-4,6-O-BENZYLIDENE-α-d-ALLOPYRANOSIDE AND -GULOPYRANOSIDE
Authors: Mitsunobu Oyo , Kudo Takashi , Nishida Mitsuru , Tsuda Nobuo 
Published: July 2006

Abstract
Methyl 4,6-O-benzylidene-α-d-glucopyranoside reacted with diethyl azodicarboxylate and triphenylphosphine to give methyl 2,3-anhydro-4,6-O-benzylidene-α-d-allopyranoside and -mannopyranoside with the former predominant, while allyl 4,6-O-benzylidene-α-d-galactopyranoside selectively afforded the corresponding 2,3-anhydroguloside.
THE SYNTHESIS OF NAPHTH[2,1-a]- AND NAPHTH[2,3-a]AZULENES
Authors: Yasunami Masafumi , Yang P W , Kondo Yukio , Noro Yukio , Takase Kahei 
Published: July 2006

Abstract
Naphth[2,1-a]- and naphth[2,3-a]azulenes were synthesized by dehydrogenation of 5,6-dihydronaphth[2,1-a]- and 5,12-dihydronaphth[2,3-a]azulenes which were obtained by the reaction of 2H-cyclohepta[b]furan-2-one with 1- and 2-pyrrolidinyl-3,4-dihydronaphthalenes, respectively.
SYNTHESIS AND PROPERTIES OF 5-CYCLOHEPTATRIENYLIDENE-2(5H)-THIOPHENONE
Authors: Takahashi Kazuko , Sakae Toshisada , Takase Kahei 
Published: July 2006

Abstract
The title compound 3 was prepared in 4 steps starting from 2,5-dibromothiophene in good yield. This synthetic method is advantageous for the easy preparation of the annulenones having an inserted quinonoid ring. The compound 3 is quite stable and proved to have a highly bond-alternated olefinic character on the basis of NMR data and dipole moment.
THE SYNTHESIS AND SOME PROPERTIES OF 1,2-AZULENEQUINONE (1,2-AZULENEDIONE) AND ITS DERIVATIVES
Authors: Morita Tadayoshi , Karasawa Michito , Takase Kahei 
Published: July 2006

Abstract
1,2-Azulenequinones (1,2-azulenediones) (la–c) were synthesized by dehydrogenation of the corresponding 1,2-dihydroxyazulenes (5a–c) which were prepared from 2-acetoxyazulenes (2b,c) by benzoyloxylation followed by hydrolysis. Some chemical and physical properties of la–c are also described.
DISODIUM 2,3,6-TRIBROMO-5-HYDROXYBENZYL 1′, 4-DISTJLFATE, A NEW BROMOPHENOL FROM THE RED ALGA, SYMPHYOCLADIA LATIUSCULA
Authors: Kurata Kazuya , Amiya Takashi 
Published: July 2006

Abstract
A new sulfated bromophenol, disodium 2,3,6-tribromo-5-hydroxybenzyl 1′,4-disulfate has been isolated from the red alga, Symphyocladia latiuscula. Its structure was established from the spectral properties and the chemical transformations.
SELECTIVE EXTRACTION OF ALKALI METAL CATIONS BY A PHOTORESPONSIVE BIS(CROWN ETHER)
Authors: Shinkai Seiji , Ogawa Toshiyuki , Kusano Yumiko , Manabe Osamu 
Published: July 2006

Abstract
A photo-responsive bis(crown ether) with azo-linkage(I) was synthesized. The solvent extraction study with (I) indicated that K+ is efficiently extracted by photo-isomerized cis-(I) but not by trans-(I), resulting in a remarkably large selectivity of trans-(I)/cis-(I) for Na+/K+ (238 fold). This suggests a possibility of photo-control of selective ion-extraction with (I).
PHOTORESPONSIVE MEMBRANES. REGULATION OF MEMBRANE PROPERTIES BY PHOTOREVERSIBLE cis–trans ISOMERIZATION OF AZOBENZENES
Authors: Kano Koji , Tanaka Yasuhiko , Ogawa Teiichiro , Shimomura Masatsugu , Okahata Yoshio , Kunitake Toyoki 
Published: July 2006

Abstract
Photoresponsive membranes have been constructed by incorporating the amphiphatic alkylammonium salts containing azobenzene chromophores into dipalmitoylphosphatidylcholine liposomes.
A MILD DEOXYGENATION OF HETEROAROMATIC N-OXIDES WITH DIPHOSPHORUS TETRAIODIDE
Authors: Suzuki Hitomi , Sato Naofumi , Osuka Atsuhiro 
Published: July 2006

Abstract
When treated with diphosphorus tetraiodide in dichloromethane under gentle reflux, the title N-oxides are easily deoxygenated to the parent bases in good yields.
PHOTOINDUCED ELECTRON TRANSFER BETWEEN AMPHIPATHIC RUTHENIUM(II) COMPLEX AND N,N-DIMETHYLANILINE IN SYNTHETIC BILAYER MEMBRANES AND PHOSPHOLIPID LIPOSOMES
Authors: Nagamura Toshihiko , Takuma Keisuke , Tsutsui Yasuhiro , Matsuo Taku 
Published: July 2006

Abstract
Photoreduction of amphipathic ruthenium(II) complex by N,N-dimethylaniline was studied by the flash photolysis in synthetic bilayer membranes and phospholipid liposomes. Back electron transfer was effectively retarded in these systems. The effect of phase transition on the rate of back electron transfer reaction was different in synthetic bilayers and in liposomes.
THE FACILE SYNTHESIS OF 1- AND 2-ALKYLAZULENES BY THE REACTIONS OF 2H-CYCLOHEPTA[b]FURAN-2-ONES WITH ENAMINES OF ALDEHYDES AND ACYCLIC KETONES
Authors: Yasunami Masafumi , Chen Alice , Yang P W , Takase Kahei 
Published: July 2006

Abstract
The reactions of 2H-cyclohepta[b]furan-2-one and its 3-cyano derivatives with enamines derived from aldehydes and acyclic ketones were investigated. On the reactions, 1- and 2-alkylazulenes were easily synthesized.
PHOTOCHEMICAL SYNTHESIS OF TRICYCLIC 1H-1,2-DIAZEPINES
Authors: Yamashita Yoshiro , Masumura Mituo 
Published: July 2006

Abstract
The photochemical reaction of tricyclic N-iminopyridinium ylides afforded 1H-1,2-diazepines containing novel structures by the selective electrocyclic ring closure followed by ring opening.
SYNTHESIS OF ANTIBIOTIC FORTIMICIN B
Authors: Suami Tetsuo , Honda Yutaka 
Published: July 2006

Abstract
Aminocyclitol antibiotic fortimicin B has been synthesized by condensation of 2,6-bis-N-(2,4-dinitrophenyl)-α-6-epi-purpurosaminyl chloride and 1,2:4,5-di-N,O-carbonylfortamine B, followed by removal of all protective groups.
DEFLUORINATION REACTIONS OF gem-DIFLUORO- AND MONOFLUOROOLEFINS. NOVEL METHODS FOR ONE-CARBON HOMOLOGATIONS OF CARBONYL COMPOUNDS LEADING TO ALDEHYDES, CARBOXYLIC ACIDS, AND ESTERS
Authors: Hayashi Sei-ichi , Nakai Takeshi , Ishikawa Nobuo 
Published: July 2006

Abstract
Defluorinative hydrolysis (or alcoholysis) of gem-difluoroolefins (1) easily prepared via the facile difluoromethylenation of carbonyl compounds afforded the carboxylic acids (or esters). The homologation method was applied to the synthesis of anti-inflammatory ibuprofen. Furthermore, defluorinative hydrolysis of monofluoroolefins obtained via the reduction of 1 gave the aldehydes.
REDUCTION OF COORDINATED DINITROGEN IN cis-W(N2)2(PMe2Ph)4 BY MEANS OF ACIDIC HYDRIDOMETAL CARBONYLS, H2Fe(CO)4 AND HFeCo3(CO)12
Authors: Nishihara Hiroshi , Mori Takehiko , Saito Taro , Sasaki Yukiyoshi 
Published: July 2006

Abstract
Formation of ammonia and hydrazine was quantitatively analyzed in the reaction of cis-W(N2)2(PMe2Ph)4 with acidic hydridometal carbonyls, H2Fe(CO)4 or HFeCo3(CO)12 after treatment of the products with aqueous KOH.
PHOTOOXIDATION OF SOME MESOIONIC AND RELATED SYSTEMS
Authors: Kato Hiroshi , Tani Kazue , Eurumisawa Haruki , Tamura Yoshiko 
Published: July 2006

Abstract
Photooxidation of several mesoionic compounds gave ring cleavage products, some of which were apparently formed via the endoperoxides of the mesoionic rings. Photooxidation of a Δ2-oxazolin-4-one and a Δ2-thiazolin-4-one gave the corresponding 4,4′-bisoxa- and bisthiazolinone in dichloromethane, whereas the former gave benzamide in dimethylformamide.
SYNTHESIS OF NOVEL QUINONES WITH SILVER (II) DIPICOLINATE AS A NEW SELECTIVE OXIDANT
Authors: Kloc Krystian , Mlochowski Jacek , Syper Ludwik 
Published: July 2006

Abstract
Benzo- and naphthoquinones bearing oxiranyl or 1,3-dioxolan-2-yl substituents were prepared by oxidative demethylation of appropriate hydroquinone dimethyl ethers with silver (II) dipicolinate. A remarkable selectivity of this silver (II) complex as an oxidizing reagent was demonstrated.
THE SPIROBICHROMAN-DIHYDROXYSPIROBIINDANE REARRANGEMENT
Authors: Tanaka Tsuguo 
Published: July 2006

Abstract
Rearrangement of 2,2′-spirobichroman derivatives having electron donating substituents into 4,4′-dihydroxy-1,1′-spirobiindane analogues was effected by boiling solution of the former in HBr- or HI-HBr-acetic acid.
RHODIUM CATALYZED CARBONYLATION REACTIONS OF CYCLOPROPANES
Authors: Hidai Masanobu , Orisaku Masami , Uchida Yasuzo 
Published: July 2006

Abstract
Cyclopropane was carbonylated by [Rh(CO)2Cl]2 under carbon monoxide pressure to give cyclobutanone, dipropyl ketone, propyl isopropyl ketone, and 2- or 3-methylcyclohexanone. Some other cyclopropane derivatives were also examined. Norcarane gave a small amount of bicyclo[4.2.0]octa-7-one, though phenylcyclopropane did not give any carbonylation products. The formation of polyketone was efficient in the case of methylenecyclopropane.
REMARKABLE CATALYTIC ACTIVITY OF 2-HYDROXYMETHYLIMIDAZOLE-Zn(II) COMPLEXES IN THE HYDROLYSIS OF p-NITROPHENYL PICOLINATE
Authors: Eiki Toshio , Kawada Shuji , Matsushima Kazumi , Mori Mikio , Tagaki Waichiro 
Published: July 2006

Abstract
The zinc complexes of 2-hydroxymethylimidazole derivatives were found to be remarkably active catalysts for the hydrolysis of p-nitrophenyl picolinate. For example, 2-hydroxymethylimidazole is much more active than the 4-hydroxymethyl isomer, and N-benzyl-2-hydroxymethylimidazole is more active than pyridine-2-carboxaldoxime. These results are discussed in relation to the catalyses of zinc containing metalloenzymes.
SULFATE AND NITRATE CONCENTRATION IN AEROSOL ABOVE KANTO AREA
Authors: Murano Kentaro , Izumi Katsuyuki , Mizuochi Motoyuki , Uno Itsushi , Wakamatsu Shinji , Okuda Michio 
Published: July 2006

Abstract
The concentration of sulfate and nitrate in aerosol above Kanto area was measured by aircraft on 6 th and 7 th August 1980 as a survey of photochemical smog. The concentration variation of both ions coincided with that of ozone throughout the field observation. This phenomenon is explained that the formation mechanism of sulfate and nitrate is closely concerned with that of ozone formation. The transport of ozone, sulfate and nitrate is governed mainly by Sagami Bay sea breeze and Kashima Nada sea breeze.
MASS SPECTROMETRIC DETERMINATION OF SPIN ADDUCTS IN SPIN TRAPPING TECHNIQUE
Authors: Suezawa Hironori , Abe Kazuhisa , Hirota Minoru , Ishii Tetsuo 
Published: July 2006

Abstract
The GC/MS(MC) technique was shown to be applicable to identify various kinds of free radicals trapped by α-aryl N-t-butyl nitrones. When spin adducts are unstable under the conditions for measurement, they were trimethylsilylated on the nitroxyl oxygen atom, which makes GC/MS measurement possible.
COMPLEX FORMATION OF EUROPIUM WITH THENOYLTRIFLUOROACETONE AND TRI-n-OCTYLPHOSPHINE OXIDE IN MICELLAR SOLUTION OF NONIONIC SURFACTANT
Authors: Taketatsu Tomitsugu 
Published: July 2006

Abstract
The distribution behavior of europium between micellar and bulk phases was investigated in aqueous solutions of europium-TTA and europium-TTA-TOPO complexes with nona-oxyethylene dodecyl ether by spectrophotofluorimetric method. Apparent equilibrium constants of these complexes were estimated.
THE C-4 CONFIGURATION AND 13C NMR SIGNALS OF HERQUEINONE FROM PENICILLIUM HERQUEI
Authors: Suga Takayuki , Yoshioka Takamitsu , Hirata Toshifumi , Aoki Tadashi 
Published: July 2006

Abstract
The C-4 configuration of herqueinone was determined to be s on the basis of the anisotropic effect of the carbonyl group at the 5-position on the geminal dimethyl groups in the 1H NMR spectra. Also, the full assignment of the 13C NMR signals of herqueinone was established by the selective 1H decoupling and the 13C-labeling techniques.