bluuebunny/crossref_metadata_2025_split huggingface dataset:
ISOMERIZATION OF OXIRANES TO ALLYLIC ALCOHOLS WITH DIALKYLBORYL TRIFLUOROMETHANESULFONATES
Authors: Inoue Tan , Uchimaru Tadafumi , Mukaiyama Teruaki 
Published: July 2006

Abstract
Isomerization of oxiranes to allylic alcohols by treatment with dialkylboryl trifluoromethanesulfonates and tertiary amines is described. Several reactions proceed in regioselective manner.
METATHESIS OF OLEYL CHLORIDE
Authors: Nakamura Ryuichi , Echigoya Etsuro 
Published: July 2006

Abstract
The metathesis of oleyl chloride (1-chloro-cis-9-octadecene) with an alkene such as 1-hexene, 5-decence, 2-butene, etc., and the disproportionation of oleyl chloride were found to be effectively catalyzed by a modified or unmodified Re2O7–Al2O3 catalyst at ambient temperature. The activity of the modified catalyst with MexOy such as V2O5, MoO3, WO3, GeO2, Re2O7–MexOy–Al2O3, was very high even at low Re contents. This reaction should be important in a synthesis of telechelic compounds or bioactive substances for insects such as sex attractant pheromones.
THE MOLECULAR STRUCTURE OF 3-METHYL-6-AMINO-1,2,4-TRIAZIN-5(2H)-ONE MONOHYDRATE
Authors: Furusaki Akio , Matsumoto Takeshi , Sekikawa Isao 
Published: July 2006

Abstract
The molecular structure of the title compound has been studied by using three-dimensional X-ray counter data. The molecule is unusual in the point that the non-ionic canonical structure contributes scarcely to the resonance in it.
CATA-CONDENSED DIBENZOPENTALENYL DIANIONS
Authors: Uyehara Tadao , Honda Tsugio , Kitahara Yoshio 
Published: July 2006

Abstract
Nuclear magnetic resonance spectrum (1H) of dilithium indeno[1,2-a]indenide (2) and that of the [2,1-a]-isomer (4) indicate unique charge delocalization, which reflects that those dianions consist of two charge delocalized indenides.
DETECTION OF SPARINGLY-SOLUBLE REACTION INTERMEDIATES IN SOLUTION BY THE STOPPED-FLOW METHOD FOR THE SCATTERED LIGHT
Authors: Mochizuki Katsura , Imamura Taira , Ito Tasuku , Fujimoto Masatoshi 
Published: July 2006

Abstract
In the course of the reaction between Co2+ and 1-(2-pyridylazo)-2-naphthol (PAN) in aqueous dioxane media, the formation and the redissolution of neutral insoluble intermediate [CoII(PAN)2]0 are observed in the stopped-flow signals for the light scattered by the reaction mixture. This approach for the detection of such invisible precipitates is also applied to the reaction of Ni2+ with PAN.
ELECTRONIC STRUCTURE OF DINITROGEN PENTAOXIDE
Authors: Okada Kazuo , Yabushita Satoshi , Yamaguchi Kizashi , Fueno Takayuki 
Published: July 2006

Abstract
Conformation and electronic structure of dinitrogen pentaoxide N2O5 were investigated on the basis of the generalized Hartree–Fock (GHF) molecular orbital (MO) method. It was found that N2O5 possesses a zwitterionic as well as weak diradical character. The concept of this duality in character is of importance to the understanding of the electronic structure and chemical behavior of N2O5.
KINETIC STUDIES OF THE REACTION OF PROPYLENE OXIDE ONTO SILICA GEL BY MEANS OF POTENTIOMETRY
Authors: Ono Katsumichi , Okura Kazuhisa , Murakami Kenkichi 
Published: July 2006

Abstract
Propylene oxide was found to react easily with silica gel surfaces in the presence of water. The reaction obeyed second order kinetics with respect to the concentration of proton. Kinetic data suggested that propylene oxide was chemisorbed on the silica gel surfaces with ring opening.
FORMATION OF 1,3-DITHIOLYLIUM SALTS BY REACTION OF 2-ALKOXY- AND 2-ALKYLTHIO-1,3-DITHIOLES WITH TRITYL SALT
Authors: Nakayama Jyuzo , Fujiwara Kazuo , Imura Mimiko , Hoshino Masamatsu 
Published: July 2006

Abstract
The reaction of 2-alkoxy-1,3-dithioles with trityl tetrafluoroborate gave 1,3-dithiolylium tetrafluoroborates and alkoxytriphenylmethanes in excellent yields. Similarly, 2-alkylthio-1,3-dithioles reacted with trityl tetrafluoroborate to give 1,3-dithiolylium tetrafluoroborates and alkylthiotriphenylmethanes.
AN APPLICATION OF ELECTRON MICROPROBE AUGER SPECTROSCOPY TO THE STUDY OF SELECTIVELY OXIDIZED Cu-0.28 WT% Al ALLOY SURFACE
Authors: Hanji Katsumi , Shimizu Hazime , Ono Masatoshi , Homma Teiichi 
Published: July 2006

Abstract
Electron microprobe Auger spectroscopy study of the surface compositional changes of a Cu-0.28 wt% Al alloy in the initial oxidation revealed that aluminum was enriched on the surface due to its selective oxidation. The degree of its enrichment was not uniform and depended on a structure of grains and on whether places were inside grains or grain boundaries.
PREPARATION AND CHARACTERIZATION OF OXOMOLYBDENUM(V) -PORPHYRIN COMPLEXES
Authors: Matsuda Yoshihisa , Kubota Fukiko , Murakami Yukito 
Published: July 2006

Abstract
Oxomolybdenum(V) complexes of tetraphenylporphine and octaethylporphine, Mo(O) (OC2H5) (TPP) and Mo(O) (OEP)X (X = Cl or OCH3), were prepared from the corresponding porphyrins by reaction with molybdenum pentachloride. Both ESR and electronic spectra indicate that the complexes coordinated with an alkoxide group exist in dichloromethane or chloroform as a single monomeric species, while more than one species are present in aromatic solvents for each of the complexes.
DIRECT SYNTHESES OF TERMINAL OLEFINS FROM THE REACTION OF 1-CHLOROMETHYLTRIMETHYLSILANE AND KETONES
Authors: Sekiguchi Akira , Ando Wataru 
Published: July 2006

Abstract
The reactions of ketones with 1-chloromethyltrimethylsilane in the presence of triphenylphosphine gave terminal olefins in good yields. The terminal olefins are formed through the Wittig type reactions of methylenetriphenylphosphorane with ketones.
BEHAVIOR OF ANTHRAQUINOID ACID DYES IN AQUEOUS SOLUTION OF SODIUM DODECYL SULFATE
Authors: Tuong Tran Dinh , Otsuka Kenji , Hayano Shigeo 
Published: July 2006

Abstract
The behavior of an anthraquinoid acid dye in an aqueous solution of an anionic surfactant,sodium dodecyl sulfate,was investigated by electronic spectroscopy and gel permeation chromatography. The experimental findings suggest that above the cmc, one dye molecule is associated with one surfactant micelle.
SYNTHESIS OF ULOSES BY THE OXIDATION WITH DIMETHYL SULFOXIDE-TRIFLUOROACETIC ANHYDRIDE
Authors: Yoshimura Juji , Sato Ken-ichi , Hashimoto Hironobu 
Published: July 2006

Abstract
Application of dimethyl sulfoxide-trifluoroacetic anhydride for the oxidation of an isolated hydroxyl group of partially protected carbohydrates gave uloses in good yields, and for that of 2,3-dihydroxyl groups of d-glucosides followed by the reaction with carbonyl reagents gave easily 2,3-diulose derivatives.
REACTION OF ORGANOMETALLIC COMPOUNDS UNDER HIGH PRESSURE. I. THE EFFECT OF PRESSURE ON THE INSERTION REACTIONS OF ALKYNES INTO trans-CHLOROHYDRIDO-BIS(TRIETHYLPHOSPHINE)PLATINUM(II)
Authors: Joh Takashi , Hagihara Nobue 
Published: July 2006

Abstract
The influence of pressure on the insertion reactions of alkynes into trans-chlorohydrido-bis(triethylphosphine)platinum(II) was investigated under high pressures up to 10,000 kg/cm2. It was found that the insertion reactions of alkynes into H–Pt(II) bond were generally accelerated with increasing pressure and the influence of pressure was remarkable in the reactions which proceeded via an ionic intermediate. In some cases change of reaction mechanisms by the pressure changes was observed.
OPTICAL EXCITATION IN COLLISIONS OF Ar+ AND He+ IONS WITH CS2
Authors: Tsuji Masaharu , Fukutome Hisao , Nishimura Yukio 
Published: July 2006

Abstract
By the impact of Ar+ or He+ ion beam of 2–3 keV, CS2 exibits similar spectra, although the recombination energies of Ar+ and He+ ions are very different: the intense \~{B}-\~{X} system of CS2+ and the weak A-X system of CS. The observed data are inconsistent with the predictions from the energy defect and Massey’s adiabatic parameter. But the charge-exchange reactions can be explained by the Franck–Condon principle.
A NOVEL FRAGMENTATION REACTION OF AN α,β-EPOXYCYCLOPENTANONE. STEREOSELECTIVE FORMATION OF TRISUBSTITUTED E-DOUBLE BOND
Authors: Tsuzuki Kazuo , Hashimoto Hisanobu , Shirahama Haruhisa , Matsumoto Takeshi 
Published: July 2006

Abstract
cis-1,6a-Epoxy-3a-methyloctahydropentalen-2-one readily undergoes fragmentation to give stereoselectively methyl (E)-3-methyl-7-oxo-2-octenoate in 75% yield, on treatment with a catalytic amount of sodium carbonate in methanol. A pericyclic mechanism is suggested for the new ring opening reaction.
GEOMETRY OPTIMIZATIONS OF 1,3-DIRADICALS: RING-OPENED AZIRIDINE AND ETHYLENE OXIDE
Authors: Yamaguchi Kizashi , Nishio Akinobu , Yabushita Satoshi , Fueno Takayuki 
Published: July 2006

Abstract
The geometry optimization procedure by use of the singlet DODS solution is applied to the ring-opened aziridine and ethylene oxide as examples of the so-called dipolar species. It is found that the trans-bent conformation is the most stable for both species. The diradical character is considerably developed for the optimized geometries inspite of the octet stabilization.
STUDIES DIRECTED TOWARDS THE SYNTHESIS OF FOMANNOSIN. A SYNTHESIS OF (±)-DIHYDROFOMANNOSIN ACETATE
Authors: Kosugi Hiroshi , Uda Hisashi 
Published: July 2006

Abstract
(±)-Dihydrofomannosin acetate has been synthesized by a reaction sequence involving the photocycloaddition of a Δα,β-butenolide derivative and the ring enlargement of a γ- to a δ-lactone system.
SYNTHESIS OF IMIDAZO[1,2-b]PYRIDAZINE 1-OXIDES BY REACTION OF OXAZOLO[3,2-b]PYRIDAZINIUM PERCHLORATES WITH HYDROXYLAMINE
Authors: Satoh Kazue , Miyasaka Tadashi , Arakawa Kiichi 
Published: July 2006

Abstract
The reaction of oxazolo[3,2-b]pyridazinium perchlorates (I) with hydroxylamine afforded monoximes (II) and dioximes (III), from both of which were synthesized imidazo[1,2-b]pyridazine 1-oxides (IV) by heating in mineral acid. The N-oxides were characterized by converting into the corresponding pyridazines by deoxygenation.
CHIRALE KONFORMERE BEI N-α-CHLOROVINYL–CARBAMIDSÄURECHLORIDEN
Authors: Ahlbrecht H , Vonderheid C 
Published: July 2006

Abstract
NMR-Untersuchungen zeigen, daß die durch Phosgenierung der Amide 1 zugänglichen N-Vinylcarbamidsäurechloride 3 als nicht planare, chirale Konformere vorliegen.
MICROWAVE SPECTRA OF ALLYLSILANE
Authors: Hayashi Michiro , Imachi Misako , Saito Makoto 
Published: July 2006

Abstract
Microwave spectra of allylsilane and its deuterated species were measured. Their rotational constants determined were predictable by a model having a set of structural parameters transferred from those of 1-butene and ethylsilane and the skeletal dihedral angle of 103°40′. Dipole moment obtained by Stark effect measurements was 0.526±0.022 D for the normal species making an angle of about 36° with the SiC bond. From the observed splittings of the spectra due to the excited silyl torsional state, the barrier to SiH3 internal rotation was determined to be 2130±70 cal/mol.
ASYMMETRIC SYNTHESIS OF PIPERIDINE DERIVATIVES: AN APPLICATION TO SYNTHESIS OF (S)-(−)-SEDAMINE AND (S)-(−)-ALLOSEDAMINE
Authors: Wakabayashi Toshio , Watanabe Kenzo , Kato Yoshinori , Saito Masahiko 
Published: July 2006

Abstract
(S)-(+)-2-oxo-6-piperidineacetic acid was synthesized by a novel route involving an asymmetric cyclization process. Its absolute configuration was determined by converting it to (S)-(−)-sedamine and (S)-(−)-allosedamine, piperidine alkaloids.
THE COLOR REACTION OF POLYVINYLCARBAZOLE WITH NITROGEN DIOXIDE AND ITS APPLICATION FOR THE DETECTION OF NITROGEN DIOXIDE
Authors: Abe Satsuki 
Published: July 2006

Abstract
Polyvinylcarbazole reacts selectively with nitrogen dioxide and develops a yellow color. The color producing components are identified to be nitro derivatives of the polymer. A new indicator tube developed as an application of this reaction will be used conveniently for the detection of nitrogen dioxide in the field of industrial hygiene.
REACTION OF 5-NITROSOTROPOLONE AND ITS ACETATE WITH CYCLOPENTADIENE
Authors: Saito Ikuo , Sakan Kunio , Itô Shô 
Published: July 2006

Abstract
The reaction of nitrosotropolone 1 with cyclopentadiene was found to proceed peri-and stereospecifically yielding unstable endo [4+2] adduct 6. Nitrosotropolone acetate 2 also reacts regio- and stereospecifically in benzene to give endo adduct 3. The structure of the products were determined on the basis of their spectra. Their quinoxaline derivatives were also prepared.
EFFECT OF pH ON SPECTRAL SENSITIZATION OF SILVER CHLORIDE
Authors: Abe Takao , Sukigara Mitsunori , Honda Kenichi 
Published: July 2006

Abstract
The effect of pH on the spectral sensitization of silver chloride was studied electrochemically. The sensitized photocurrent by rhodamine B decreased with lowering pH of the electrolyte solution, whereas in the case of 1,1′-diethyl-2,2′-quinocyanine chloride, the increase in the sensitized photocurrent was observed. The above fact suggests that H+ existing in the vicinity of the silver chloride surface plays an important role in increasing the sensitized photocurrent.
A LONG-RANGE ISOTOPE EFFECT ON A HFSC OF THE BICYCLO[2.1.1]HEXAN-5-YL RADICAL
Authors: Kawamura Takashi , Hayashida Shigeru , Yonezawa Teijiro 
Published: July 2006

Abstract
The hyperfine splitting constant (hfsc) of H6endo of the bicyclo[2.1.1]hexan-5-yl radical increased from 28.22 G to 28.80 G upon the replacement of H5 with a deuterium atom, which is qualitatively explained, with the aid of INDO calculations, as due to the decrease of the out-of-plane mode vibration of the C5–H5 bond upon the replacement.
FLUORESCENCE QUENCHING OF 9-AMINOACRIDINE BY ADENOSINE-5′-MONOPHOSPHATE AND GUANOSINE-5′-MONOPHOSPHATE
Authors: Kubota Yukio 
Published: July 2006

Abstract
The fluorescence properties (spectrum, lifetime and quantum yield) of 9-aminoacridine cation in aqueous solutions of nucleotides have been examined. It was found that the fluorescence of the dye is quenched by adenosine-5′-monophosphate and guanosine-5′-monophosphate. Quantitative analysis of the results shows that the quenching of fluorescence is caused by dynamic and static quenching processes.
PRESSURE-VOLUME APPROACH TO THE ACTIVITY COEFFICIENT OF NONELECTROLYTE IN AQUEOUS MIXED SOLVENT
Authors: Watarai Hitoshi , Suzuki Nobuo 
Published: July 2006

Abstract
The extension of McDevit and Long theory to the prediction of the activity coefficient of nonelectrolyte in aqueous mixed solvent has been made. By the use of the present approach, the characteristic composition dependences of the hydrogen gas solubility (literature data) in water-dimethyl sulfoxide (DMSO) mixtures and the observed partition coefficient of acetone and acetylacetone in the system of heptane/water-DMSO could be reasonably interpreted.
CHEMISTRY OF AMINOGLYCOSIDE ANTIBIOTICS P-2563 (P) AND (A)
Authors: Nara Kiyoshi , Sumino Yasuhiro , Katamoto Kazuyoshi , Akiyama Shunichi , Asai Mitsuko 
Published: July 2006

Abstract
Two antibiotics active against Gram-positive and -negative bacteria, P-2563 (P) (I) and (A) (II) were isolated from a cultured broth of Pseudomonas fluorescence P-2563. It was found that I and II have acylaminoglycoside having the same new aminopolyol in their molecule. From their chemical degradation studies and physico-chemical properties structures of I and II were proposed to be 3-O-(4-deoxy-4-propionamido-α-d-glucopyranosyl)-1,4-diamino-1,4-dideoxyhexitol and 3-O-(4-acetamido-4-deoxy-α-d-glucopyranosyl)-1,4-diamino-1,4-dideoxyhexitol, respectively.
SYNTHESIS OF (±)-MAYTENOQUINONE, (±)-DISPERMOL, AND (±)-DISPERMONE
Authors: Matsumoto Takashi , Ohmura Taishi 
Published: July 2006

Abstract
Three tricyclic diterpenes, maytenoquinone (1), dispermol (2), and dispermone (3), were synthesized as racemic forms starting from β-cyclocitral (5) by a simple route. Condensation of (5) with 3,4-dimethoxy-2-isopropylbenzyl chloride (8) afforded an alcohol (9) which was successively subjected to oxidation, intramolecular cyclization, demethylation, and oxidation to give (±)-1. Reductive cleavage of a hydroxyl group in (9) followed by cyclization gave (±)-2 which was further converted into (±)-3.
REACTION OF O(1D2) WITH ETHANE IN LIQUID AND HIGH-PRESSURE SF6
Authors: Kajimoto Okitsugu , Yamasaki Hiroshi , Fueno Takayuki 
Published: July 2006

Abstract
Sulfur hexafluoride has been found to be completely inert toward O(1D2) even in the liquid state, thus being quite suitable as a solvent for reactions of the O(1D2) atom. The reaction between O(1D2) and C2H6 was studied in high-pressure as well as liquid SF6. The limiting quantum yield of C2H5OH was found to be 0.67 in the high pressure limit and as large as 0.88 in the liquid state.
Cu NUCLEAR QUADRUPOLE RESONANCES OF SEVERAL COMPLEXES OF COPPER(I) HALIDES WITH TRIPHENYLPHOSPHINE
Authors: Okuda Tsutomu , Hiura Morio , Yamada Koji , Negita Hisao 
Published: July 2006

Abstract
The 63Cu nuclear quadrupole resonances have been observed in (CuX)nLm (X=Cl, Br, I; L=triphenylphosphine; n:m=1:1, 2:3, 1:2). Two characteristic frequency ranges were observed: the resonance frequencies of the three-coordinated Cu atoms are far above those of the four-coordinated.
A NEW SYNTHETIC METHOD FOR THE TRANSFORMATION OF ALCOHOLS TO ALKYL CHLORIDES USING 2-CHLOROBENZOXAZOLIUM SALT
Authors: Mukaiyama Teruaki , Shoda Shin-ichiro , Watanabe Yutaka 
Published: July 2006

Abstract
2-Chloro-3-ethylbenzoxazolium tetrafluoroborate reacts smoothly with a variety of alcohols in the presence of tetraethylammonium chloride to afford the corresponding alkyl chlorides in high yields. Replacement of a hydroxyl group at an asymmetric carbon atom with chlorine proceeds in a stereospecific manner.
SYNTHESES OF 1,4-DIHYDROPYRIDINES CONTAINING AMINO ACIDS AND REDUCTION OF ETHYL BENZOYLFORMATE
Authors: Endo Takeshi , Hayashi Yashuhiro , Okawara Makoto 
Published: July 2006

Abstract
1-Benzyl-1,4-dihydronicotinamide derivatives (IIa-IId) containing amino acid moieties such as glycine, l-alanine,l-leucine and l-phenylalanine were prepared, and the asymmetric reduction of ethyl benzoylformate by use of IIa-IId was examined.
THERMAL REARRANGEMENT OF 2-(BUTA-1,3-DIENYL)-2H-AZIRINES: FORMATION OF VINYLPYRROLES INSTEAD OF AZEPINES
Authors: Isomura Kazuaki , Tanaka Tatsuyoshi , Taniguchi Hiroshi 
Published: July 2006

Abstract
Thermal rearrangement of 2-(buta-1,3-dienyl)-2H-azirines, 1a, 1b, and 1c, afforded 2-vinylpyrroles, 4a, 4b, and 4c. The main product alleged as an azepine 2 was revealed to be a 2-vinylpyrrole 4a and evidence for the formation of the azepine 2 was not obtained.
TIME-RESOLVED FLUORESCENCE SPECTRA OF NITROGEN DIOXIDE EXCITED AT 450.4 NM BY A 4-METHYLUMBELLIFERONE LASER
Authors: Imasaka Totaro , Ogawa Teiichiro , Ishibashi Nobuhiko 
Published: July 2006

Abstract
The fluorescence spectra of nitrogen dioxide at 0.1 torr were measured (gate time; 0–150 μsec, 0–100 nsec, 5–15 μsec). The short-lived discrete emission and the long-lived continuum emission were resolved by using the pulse-gated photon counting method.
INTERACTION OF OZONE WITH 3,7-DIMETHYLOCTYL ACETATE ON SOLID ADSORBENTS
Authors: Beckwith Athelstan L J , Bodkin Colin L , Duong Thach 
Published: July 2006

Abstract
Oxidation with ozone of the acetate (1) adsorbed on silicagel, alumina, or barium sulphate proceeds in good yield and gives mainly the alcohol (2) and the ketone (3). The high regioselectivity of the reaction when conducted at a suitable substrate loading is attributed to the mutual steric effect of one molecule upon the other in the adsorbed monolayer.
AN EFFICIENT METHOD FOR THE SYNTHESIS OF MACROCYCLIC LACTONE
Authors: Mukaiyama Teruaki , Narasaka Koichi , Kikuchi Kazunori 
Published: July 2006

Abstract
Long chain ω-hydroxycarboxylic acids were quantitatively converted to 6-phenyl-2-pyridyl esters by the treatment of the acids with 6-phenyl-2-pyridone and 2-chloro-1-methylpyridinium iodide in the presence of triethylamine. These esters were cyclized in refluxing methylene chloride by the promotion of p-toluenesulfonic acid to give macrocyclic lactones in high yields.
THE INFLUENCES OF SUBSTITUENT AND CONFIGURATIOAL, GEOMETRY ON THE CIRCULAR DICHROISM OF LACTAMS
Authors: Wakabayashi Toshio , Kato Yoshinori , Watanabe Kenzo , Saito Masahiko 
Published: July 2006

Abstract
Chiroptical properties of five- and six-membered monocyclic lactams 1–10 of known absolute configuration have been studied. It was found that the N-methyl group dominantly contributed to the n→π* Cotton effects of δ-lactams; N-methylated lactams 7–10 exhibit positive Cotton effects while the unsubstituted lactam 6 shows a negative Cotton effect.
CYCLIZATION OF POLYENES XXII. SYNTHESIS AND STEREOCHEMISTRY OF THUNBERGOL
Authors: Kato Tadahiro , Suzuki Masanobu , Takahashi Masahiro , Kitahara Yoshio 
Published: July 2006

Abstract
Regio- and stereoselective synthesis of thunbergol(Vb) and its epimer(Va) was carried out starting from dl-epimukulol(IIb) and dl-mukulol(IIa), respectively. The present work establishes unequivocally the stereostructure of thunbergol which has remained unsolved.
STEREOCHEMICAL STUDIES OF THE ELECTROLYTIC REACTIONS OF ORGANIC COMPOUNDS III. ELECTROLYTIC REDUCTION OF 2-METHYLCYCLOHEXANONE TO 2-METHYLCYCLOHEXANOL
Authors: Nonaka Tsutomu , Wachi Sadayuki , Fuchigami Toshio 
Published: July 2006

Abstract
2-Methylcyclohexanone was electrolytically reduced to 2-methylcyclohexanol under a variety of conditions. The trans/cis ratio of 2-methylcyclohexanol strongly depended on cathode material, current density and organic co-solvent in aqueous sodium hydroxide, while in aqueous sulfuric acid such a strong dependence was not observed.
PREPARATION OF 2-OXA-3-6-DIOXO-9-VINYL-cis-DECALIN SKELETON, A PRECURSOR OF VERNOLEPIN
Authors: Torii Sigeru , Okamoto Tsutomu , Kadono Sinichi 
Published: July 2006

Abstract
2-Oxa-3,6-dioxo-4-methoxycarbonyl-9-vinyl-cis-decalin (9), a precursor of vernolepin, was synthesized from 3-ethoxy-2-cyclohexenone (3). The condensation of the kinetic enolate of 3 with acetaldehyde and subsequent dehydration afforded 5 in good yield. Deconjugative hydroxymethylation of 5 followed by esterification with methyl malonyl chloride gave 8.Intramolecular Michael addition of 8 provided 9 in 66% yield.
LOW TEMPERATURE ACTIVITY OF THE COPPER OXIDE CATALYST SUPPORTED ON ACTIVATED CARBON FOR REDUCTION OF NITRIC OXIDE WITH AMMONIA
Authors: Nozaki Fumio , Yamazaki Kenichiro , Inomata Takashi 
Published: July 2006

Abstract
The copper oxide catalyst supported on activated carbon showed a high activity even at the low temperature near 100 °C. The correlation between NO conversion and reaction temperature was really complicated, having both a maximum in the temperature range 120–150 °C and a minimum at the temperature near 300 °C. An appropriate amount of CuO supported on activated carbon was about 5 wt%.
THE PEPTIDE SYNTHESIS USING UNSYMMETRICAL CARBODIIMIDES
Authors: Ito Hisashi , Takamatsu Norihiro , Ichikizaki Iwao 
Published: July 2006

Abstract
When a peptide was synthesized by use of an unsymmetrical carbodiimide in which the electron density on one nitrogen atom is lower than that on the other, it has been found that the formation of N-acylurea is markedly suppressed and the racemization of the product is limited to a less extent in comparison with the case using DCC(dicyclohexylcarbodiimide).
CHARGE-TRANSFER-INDUCED PHOTOLYSIS OF BENZYL ACETATES WITH ALIPHATIC AMINES
Authors: Ohashi Mamoru , Tsujimoto Kazuo , Furukawa Yuji 
Published: July 2006

Abstract
Photolysis of benzyl acetates proceeds reductively in the presence of aliphatic amines via electron-transfer followed by proton-transfer. The reaction is appropriately included in the category of the photo-induced Birch reduction.
SYNTHESIS USING ALLYLIDENEDIHYDROPYRIDINES I. CONVENIENT SYNTHESIS OF 3-ETHENYLPYRAZOLO[1,5-a]PYRIDIKES
Authors: Kakehi Akikazu , Ito Suketaka , Uchiyama Kenji , Kondo Kenji 
Published: July 2006

Abstract
2-Allylidene-1,2-dihydropyridines possessing an electrophilic center in the 1-substituent were prepared by the reactions of pyridinium salts with ethyl ethoxymethylenecyanoacetate in the presence of alkali, and their thermolyses gave 3-ethenylpyrazolot[1,5-a]pyridines in nearly quantitative yields.