bluuebunny/crossref_metadata_2025_split huggingface dataset:
POLYMERIC NITROPHENYLSULFENYL CHLORIDE, AN INSOLUBLE AMINO PROTECTING REAGENT IN PEPTIDE SYNTHESIS
Authors: Ito Hisashi , Ogawa Keiichi , Ichikizaki Iwao 
Published: July 2006

Abstract
A polymeric nitrophenylsulfenyl chloride(5) was synthesized and used for amino protection during peptide synthesis. The insoluble protecting group can be selectively removed from the amino derivative with mild acid treatment similarly to o-nitrophenylsulfenyl(Nps) group, and the separation is quite easy due to its insolubility. When the protected derivative is treated with hydrogen chloride for deprotection, the polymeric reagent(5) is regenerated so that it can be used for amino protection repeatedly.
CYCLIZATION OF POLYENES XXX SYNTHESIS OF 2-HYDROXY- AND 1,2-DEHYDRO-7,8-OXIDO-NEPHTENOLS AND CEMBRENOL
Authors: Suzuki Masanobu , Shimada Akihide , Kato Tadahiro 
Published: July 2006

Abstract
The naturally occurring cembrenoids (I, II, and III) were successfully synthesized, demonstrating unequivocally the assigned structure.
THEORETICAL STUDIES ON THE DISTRIBUTION OF THE DAUGHTER FRAGMENTS PRODUCED BY THE β+-DECAY IN 18F-LABELLED METHYLFLUORIDE
Authors: Ikuta Shigeru 
Published: July 2006

Abstract
The β+ -decay in CH318F was theoretically studied with ab initio MO calculation. The transition probability from a parent to the daughter in the ground and various excited states was calculated. The recoil effect as well as the electron shake-off will play an important role for the final products.
“Sb–I–Ca PROCESS” FOR THERMOCHEMICAL HYDROGEN PRODUCTION
Authors: Miura Norio , Yamazoe Noboru , Seiyama Tetsuro 
Published: July 2006

Abstract
A new thermochemical water-splitting process named “Sb–I–Ca Process” is proposed with relevant thermochemical data and preliminary experimental results. The process consists of basic steps of five reactions and three phase-transitions, each of which proceeds to an acceptable extent. The overall efficiency is estimated to be ca.50 % with an assumption of 70 % heat recovery.
A SIMPLE SYNTHESIS OF α,β-UNSATURATED ALDEHYDES BY THE REACTION OF VINYLSILANES WITH DICHLOROMETHYL METHYL ETHER PROMOTED BY TITANIUM(IV) CHLORIDE. APPLICATION TO THE SYNTHESIS OF ETHYL 12-OXO-10(E)-DODECENOATE AND NUCIFERAL
Authors: Yamamoto Keiji , Yoshitake Junichi , Qui Nguyen Thi , Tsuji Jiro 
Published: July 2006

Abstract
1,2-Disubstituted vinyltrimethylsilanes (1) readily underwent formylation with replacement of the silyl group when treated with dichloromethyl methyl ether and titanium(IV) chloride. This reaction provides a simple procedure for the selective preparation of (E)-2-alkenals (2) and was conveniently applied to the synthesis of ethyl 12-oxo-10(E)-dodecenoate and nuciferal.
NOVEL DINITROGEN–COBALT COMPLEXES [Co(N2)(PR3)3Mg(THF)2] WHICH LIBERATE HYDRAZINE ON HYDROLYSIS
Authors: Miura Yoshikiyo , Yamamoto Akio 
Published: July 2006

Abstract
New dinitrogen–cobalt complexes with the formula of [CoN2(PR3)3Mg(THF)2] (PR3 = PPh3 and PPh2Et) have been obtained by the reaction of CoH(N2)(PPh 3)3 with diethylmagnesium and by the reaction of Co(acac)3, PPh2Et and MgEt2 under nitrogen; the N2 contained in the complexes was found to be converted into hydrazine and a small amount of ammonia on hydrolysis.
THERMOLYSES OF STRAINED 1,2,5-OXADIAZOLES AND 1,2,5-THIADIAZOLES OF THIANORBORNANE SERIES
Authors: Tsuge Otohiko , Takata Toshiaki , Ued Ikuhiko 
Published: July 2006

Abstract
Thermolysis of stereoisomeric 4-oxa-13-thia-3,5,10-triaza-1,7,10-triphenyltetracyclo[5.5.1.02,6.08,12]trideca-2,5-diene-9,11-diones, which are cycloadducts of 4,6-diphenylthieno[3.4-c]-1,2,5-oxadiazole to N-phenylmaleimide, under mild conditions results in ring cleavage of the oxadiazole ring to nitrile and nitrile oxide moieties which can be trapped as 1,3-cycloadducts to dimethyl acetylenedicarboxylate. On the other hand, analogous strained adducts obtained from 4,6-diphenylthieno[3.4-c]-1,2,5-thiadiazole and N-phenylmaleimide undergo a retro-cycloaddition reaction.
DETERMINATION OF METOL AND HYDROQUINONE IN A PHOTOGRAPHIC DEVELOPER BY LIQUID CHROMATOGRAPHY
Authors: Ohno Takashi , Mizusawa Shinya , Takai Nobuharu 
Published: July 2006

Abstract
Metol, hydroquinone and their oxidation products in a photographic developer were satisfactorily analyzed directly by liquid chromatography without any pre-treatment of the developer. The eluent of the liquid chromatography was prepared by eliminating the developing agents from the developer.
NEW GERANYLGERANYLBENZOQUINONE DERIVATIVES FROM SARGASSUM TORTILE
Authors: Ishitsuka Midori , Kusumi Takenori , Nomura Yukihiro , Konno Toshinori , Kakisawa Hiroshi 
Published: July 2006

Abstract
From the brown alga, Sargassum tortile, seven new benzoquinones and hydroquinones bearing diterpenoid side chains were isolated. 2-Geranylgeranyl-6-methylbenzoquinone, which is likely to be a basic substance of the diterpenoid-substituted benzoquinones distributed in many Sargassum species, was also obtained.
PHOTOCHEMICAL REARRANGEMENT OF 3-PHENYLATED 2(3H)-OXEPINONES IN ACIDIC MEDIA. FORMATION OF 5-STYRYL-2(5H)-FURANONES
Authors: Hoshi Nobuto , Hagiwara Hisahiro , Uda Hisashi 
Published: July 2006

Abstract
The sensitized photolysis of 3-phenylated 2(3H)-oxepinones in methylene chloride containing acids gives 5-styryl-2(5H)-furanones as the major products. The 1,5-phenyl migrated products, 7-pheny1-2(7H)-oxepinones, are proposed as the most plausible initial photoproducts.
NEW SESQUITERPENE LACTONES FROM EUPATORIUM CHINENSE VAR. SIMPLICIFOLIUM (MAKINO) KITAM.
Authors: Ito Kazuo , Sakakibara Yoshihisa , Haruna Mitsumasa 
Published: July 2006

Abstract
Five new sesquiterpene lactones, eupachifolin-A, -B, -C, -D, and -E, were isolated from Eupatorium chinense var. simplicifolium (Makino) Kitam. and their structures were described. Eupachifolin-A belongs to the class of cis-Δ4,5,cis-Δ1,10-germacranolides, whereas eupachifolin-B, -C, -D, and -E are mutually related guaianolides. Structures and stereochemistries of the new sesquiterpene lactones were determined by chemical transformations and extensive use of 1H and 13C NMR spectrometry.
STRUCTURE OF CARTHAMIN
Authors: Obara Heitaro , Onodera Jun-ichi 
Published: July 2006

Abstract
The structure 6, 1-(2,6-diketo-3-glucosyl-3,4-dihydroxy-5-p-hydroxycinnamoyl)-cyclohex-4-enylidene-1′-(2′,3′,4′-trihydroxy-3′-glucosyl-5′-p-hydroxycinnamoyl-6′-keto)-cyclohexa-1′,4′-dienylmethane, was assigned for carthamin on the basis of its spectroscopic evidence and hydrolytic behavior.
PREPARATION AND PROPERTIES OF SEVEN-COORDINATE DIMETHYLTIN(IV) AND DIMETHYLLEAD(IV) COMPLEXES: (CH3)2M(pan)(acac) (M = Sn, Pb)
Authors: Kawasaki Yoshikane , Sasaki Torahiko 
Published: July 2006

Abstract
Seven-coordinate dimethyltin(IV) and dimethyllead(IV) complexes, (CH3)2M(pan)(acac) (M = Sn, Pb) , were prepared. In these complexes the acetylacetonato ligand was found to become less labile as compared with that of six-coordinate complexes, (CH3)2M(acac)2 (M = Sn, Pb).
ELECTROCATALYTIC BEHAVIOR OF METAL PORPHYRINS IN THE REDUCTION OF CARBON DIOXIDE
Authors: Takahashi Katsuhiro , Hiratsuka Kazuya , Sasaki Hideo , Toshima Shinobu 
Published: July 2006

Abstract
The catalytic activity of metal porphyrins for the electroreduction of carbon dioxide was investigated by the measurements of current-potential curves on the Hg(Pt) electrode in aqueous electrolytic solutions. Metal-free, cobalt, iron and copper porphyrins(mesotetracarboxyphenylporphyrins, tetraphenylporphinesulfonate) were examined. Cobalt complexes were active but other metal porphyrins showed no activity. The reduction product was confirmed to be formic acid by the resorcinol test.
STRUCTURE AND ACIDITY OF 12-MOLYBDOPHOSPHORIC ACID AND ITS SALTS IN SOLID STATE AS CHARACTERIZED BY INFRARED SPECTROSCOPY
Authors: Furuta Motonobu , Sakata Kanji , Misono Makoto , Yoneda Yukio 
Published: July 2006

Abstract
Presence of water was found to be essential to maintain the Keggin structure of 12-molybdophosphoric acid (PMo12). Hydronium ion was detected by IR at high water contents. PMo12 was almost pure Brönsted acid as seen from IR spectra of adsorbed pyridine. Dependencies of the spectra on time, temperature, and presence of water were discussed in relation to the characteristic surface properties of PMo12.
CATALYTIC ACTIVITY OF MANGANESE NODULE FOR OXIDATIVE DEHYDROGENATION OF ALCOHOLS AND HYDROCARBONS
Authors: Nitta Masahiro , Matsuo Kiyotaka , Aomura Kazuo 
Published: July 2006

Abstract
Various kinds of alcohols and hydrocarbons except chain hydrocarbon are oxidatively dehydrogenated on manganese nodule catalyst. The catalytic activity shows no decrease for long reaction time in the presense of oxygen in the reactant. The surface excess oxygen on manganese nodule is strongly concerned in these reactions as active spieces.
MIXED-LIGAND COMPLEX OF COBALT(III) CONTAINING N,N′-BIS(2-PYRIDYLMETHYL)ETHYLENEDIAMINE AND ETHYLENEDIAMINE
Authors: Utsuno Shunji , Hayashi Arimichi , Kondo Susumu , Utsumi Minoru 
Published: July 2006

Abstract
The title complex was prepared and all the geometrical isomers and the diastreoisomers were separated. The structure of each isomer was assigned in terms of 13C-NMR and CD spectra.
REDUCTION OF β-ALKYLTHIO α,β-UNSATURATED KETONES [R1COCH=C(R2)SR3] WITH LiAlH4 OR NaBH4: CONVERSION TO α,β-UNSATURATED KETONES (R1CH=CHCOR2)
Authors: Nishio Takehiko , Omote Yoshimori 
Published: July 2006

Abstract
Reduction of β-alkylthio α,β-unsaturated ketones [R1COCH=C(R2)SR3] with lithium aluminium hydride (LiAlH4) or sodium borohydride (NaBH4) gave α,β-unsaturated ketones (R1CH=CHCOR2) in moderate yields. In some cases, the saturated γ-hydroxy sulfide is obtained in high yield.
SYNTHESIS OF 7-OXABICYCLO[2.2.1]HEPTANES FROM 3-CYCLOHEXENOLS INVOLVING PHOTO-INDUCED HYPOIODITE REACTION
Authors: Takahashi Hajime , Ito Masaaki 
Published: July 2006

Abstract
Various 7-oxabicyclo[2.2.1]heptanes were synthesized by the photo-induced hypoiodite reaction of 3-cyclohexenols, followed by reduction of 2-iodo-7-oxabicyclo[2.2.1]heptanes.
ASYMMETRIC SYNTHESIS OF 3-ALKYLSUCCINALDEHYDIC ACID METHYL ESTERS
Authors: Asami Masatoshi , Mukaiyama Teruaki 
Published: July 2006

Abstract
The highly stereoselective Michael addition was achieved by treating an aminal, prepared from (S)-2-(anilinomethyl)pyrrolidine and fumaraldehydic acid methyl ester, with the Grignard reagents. 3-Alkylsuccinaldehydic acid methyl esters were obtained with high enantiomeric excesses by the hydrolysis of the resulting aminals.
η-ALLYLIC COORDINATION OF β-DIKETONATE DIANIONS TO PALLADIUM(II)
Authors: Yanase Norio , Nakamura Yukio , Kawaguchi Shinichi 
Published: July 2006

Abstract
The terminal-carbon-bonded monoanions of 2,4-pentanedione and ethyl acetoacetate in the [PdCl(β-dik-C1)(bpy)] complexes were deprotonated and converted into the trihapta dianions in the reactions with thallium(I) 2,4-pentanedionate in benzene and in dichloromethane, respectively.
POTASSIUM FLUORIDE ON INORGANIC SOLID SUPPORTS. A SEARCH FOR FURTHER EFFICIENT REAGENTS PROMOTING HYDROGEN-BOND-ASSISTED ALKYLATIONS
Authors: Yamawaki Junko , Ando Takashi 
Published: July 2006

Abstract
Effectiveness of various inorganic solids as a support of potassium fluoride for promoting “hydrogen-bond-assisted” alkylations was studied. Alumina was found most effective; even O-alkylation of an alcohol can be easily undertaken by use of KF-Al2O3. A variety of molecular sieves showed a selectivity in the case of C-alkylation.
AN ASYMMETRIC TOTAL SYNTHESIS OF A NEW MARINE ANTIBIOTIC-MALYNGOLIDE
Authors: Sakito Yoji , Tanaka Shin , Asami Masatoshi , Mukaiyama Teruaki 
Published: July 2006

Abstract
(−)-Malyngolide was synthesized from (S)-2-hydroxy-2-nonyl-6-heptenal, prepared in high optical yield by an asymmetric synthesis using (S)-2-(anilinomethyl)pyrrolidine as a chiral auxiliary.
CHIRAL PHENYLPHOSPHONIC ESTERS, THEIR PREPARATION VIA ETHYL N-[CHLORO(PHENYL)THIOPHOSPHONYL] l-PROLINATE AND THEIR ABSOLUTE CONFIGURATIONS
Authors: Koizumi Toru , Takagi Hiroyasu , Yoshii Eiichi 
Published: July 2006

Abstract
Diastereomerically pure ethyl N-[chloro(phenyl)thiophosphonyl]-l-prolinate was prepared. From this intermediate various optically active phenylphosphonic acid derivatives have been obtained in high optical yields. Their absolute configurations have been determined by the chemical correlation.
HIGH CATALYTIC ACTIVITY OF IRON OXIDE FOR BENZYLATION, t-BUTYLATION, AND ACETYLATION OF TOLUENE WITH BENZYL, t-BUTYL, AND ACETYL CHLORIDES
Authors: Arata Kazushi , Hino Makoto 
Published: July 2006

Abstract
Iron oxides obtained by calcining at 300–500°C Fe(NO3)3 or iron hydroxides, precipitated by hydrolyzing FeCl3 and Fe(NO3)3 with ammonia, showed exceedingly high catalytic activities for the title reactions at room temperature.
ACYL AZIDES AS ACYLATING AGENTS. A FACILE SYNTHESIS OF SUBSTITUTED TETRALONES
Authors: Sanchez I H , Mendoza M T , Aguilar M A , Martell E A , Gonzalez M E , Lemini C 
Published: July 2006

Abstract
Treatment of 4-aryl butyryl azides or the intermediate mixed carbonic anhydrides with excess polyphosphoric acid or aluminum trichloride, respectively, provide a versatile method of synthesis of substituted tetralones, applicable to those cases where the necessary acid chlorides are unstable or difficult to prepare.
SYNTHESES AND REACTIONS OF DIAMINOOXOSULFONIUM SALTS
Authors: Okuma Kentaro , Higuchi Naotsugu , Ohta Hiroshi , Kobayashi Michio 
Published: July 2006

Abstract
Diaminooxosulfonium salts were prepared by alkylation of aminosulfoximines. Their reactions with dimsyl sodium gave the corresponding ylides and sulfoximines. The intramolecular rearrangement of the ylide led to ortho substitution bia an intermediate cyclohexadienoneimine. Hydrogen transfer, accompanying rearomatization and the subsequent action of a base gave a dihydrobenzoisothiazole derivative.
STRONG METAL-SUPPORT INTERACTION IN ALUMINA SUPPORTED PLATINUM CATALYSTS
Authors: Kunimori Kimio , Okouchi Takahiko , Uchijima Toshio 
Published: July 2006

Abstract
After heat treatments of Pt–Al2O3 catalysts in H2 and O2 at high temperatures, drastic changes both in H2 and O2 chemisorption occurred in spite of no change of Pt particle size. The extent of the changes was found to be quite different among the alumina supports used. The phenomenon relates to a strong metal-support interaction, and some aspects of different behaviors on these alumina supports were discussed.
A NOVEL SYNTHESIS OF TERMINAL OLEFINS BY ANODIC OXIDATION OF CARBOXYLIC ACIDS HAVING A TRIMETHYLSILYL GROUP ON THE β-POSITION
Authors: Shono Tatsuya , Ohmizu Hiroshi , Kise Naoki 
Published: July 2006

Abstract
Anodic oxidation of carboxylic acids having a trimethylsilyl group on the β-position gave exclusively terminal olefins in reasonable yields.
BIVALENT COBALT COMPLEXES WITH 1-(2-PYRIDYLAZO)-2-NAPHTHOL (β-PAN) AND ANALOGOUS LIGANDS
Authors: Mochizuki Katsura , Fujimoto Masatoshi 
Published: July 2006

Abstract
Bivalent cobalt complexes with the title ligands were synthesized and isolated. They were characterized by absorption spectra and magnetic moments. The Co (II) complexes were found to be oxidized to the Co (III) complexes in DMSO in the presence of Cu(II) ions.
SPLITTING OF WATER INTO HYDROGEN AND HYDROGEN PEROXIDE BY LIGHT IRRADIATION OF ANTHRAQUINONE DERIVATIVES
Authors: Okura Ichiro , Kim-Thuan Nguyen 
Published: July 2006

Abstract
Water splitting into hydrogen and hydrogen peroxide system is developed which contains anthraquinone as a photosensitizer, methyl viologen as an electron transfer agent and colloidal platinum as a catalyst.
SYNTHESIS AND MOLECULAR STRUCTURE OF TPPSn-Mn(CO)4–Hg–Mn(CO)5·1/2CH2C12: A BENT Sn–Mn–Hg–Mn ARRAY EXTENDED OVER A PORPHYRIN RING
Authors: Onaka Satoru , Kondo Yoshinori , Toriumi Koshiro , Ito Tasuku 
Published: July 2006

Abstract
The title compound was synthesized by the reaction of TPPSnCl2 with NaMn(CO)5 which was prepared by Na–Hg reduction of Mn2(CO)10 in THF. The Molecular structure was solved by X-ray diffraction techniques. The molecule possesses a Sn–Mn–Hg–Mn unit and the unit is bound to TPP through the tin atom. The Mn–Hg–Mn unit is almost linear, but the Sn–Mn–Hg unit is bent at a right angle.
PHOTOREDUCTION OF CARBONYLS WITH HYDROGEN SELENIDE. AN ESTIMATION OF THE HIGH HYDROGEN DONATING ABILITY OF HYDROGEN SELENIDE BY KINETIC STUDY AND CHEMICAL TRAPPING
Authors: Kambe Nobuaki , Kondo Kiyoshi , Sonoda Noboru 
Published: July 2006

Abstract
The rate constant for the photoreduction of acetophenone with hydrogen selenide in tetrahydrofuran was obtained as 4.7×108M−1s−1. It was also found that hydrogen selenide was able to trap short-lived excited carbonyls, and acyl or alkyl radicals generated in Norrish type I reaction.
CESIUM FLUORIDE-PROMOTED SYNTHESIS OF CARBOXYLIC ACID DERIVATIVES USING 2-FLUOROPYRIDINIUM SALT
Authors: Shoda Shin-ichiro , Mukaiyama Teruaki 
Published: July 2006

Abstract
In the presence of cesium fluoride, the equimolecular reactions of carboxylic acids with alcohols, amines or thiols using 2-fluoropyridinium salt proceeded smoothly under mild conditions to afford the corresponding carboxylic acid derivatives with base sensitive groups in good yields.
THREE NEW DAPHNIPHYLLUM ALKALOIDS WITH AN αβ,γδ-UNSATURATED ESTER GROUP FROM DAPHNIPHYLLUM GRACILE GAGE
Authors: Yamamura Shosuke , Lamberton J A , Niwa Masatake , Endo Keiko , Hirata Yoshimasa 
Published: July 2006

Abstract
Three new alkaloids have been isolated from the bark of Daphniphyilum gracile Gage, and their structures with an αβ,γδ-unsaturated ester group also been elucidated on the basis of their spectral and chemical properties. In addition, it is chemotaxonomically important that daphniphylline, one of the main alkaloids found in the Japanese species, has also been detected in this experiment, while this alkaloid has not been found in the leaves of the same plant.
THE ASYMMETRIC HYDROGENATION OF THE α-N-ACETYLAMINOCINNAMOYL DERIVATIVE OF AMINO ACIDS WITH CHIRAL BISPHOSPHINE–RHODIUM COMPLEX
Authors: Onuma Ken-ichi , Ito Tomiyasu , Nakamura Asao 
Published: July 2006

Abstract
An optical yield of the dipeptide obtained in the title reaction is affected by a chiral amino acid moiety in the substrate.
PREPARATION OF THE PERCHLORATE SALTS OF COBALT(III)- PORPHYRINS AND THEIR REACTIONS WITH VINYL ETHER
Authors: Sugimoto Hiroshi , Nagano Motoi , Yoshida Zen-ichi , Ogoshi Hisanobu 
Published: July 2006

Abstract
Cobalt(III) complexes of octaethylporphyrin(OEP) and tetraphenylporphyrin(TPP),[Co(III)(OEP)(L)2]ClO4;L=tetrahydrofuran(1),H2O(2) pyridine(3) and [Co(III)(TPP)(L)2]ClO4;L=H2O(4) ,pyridine(5) were synthesized. The reactions of (1),(2) and (4) with vinylethylether afforded organocobalt(III) complexes, whereas the reactions of (3) and (5) gave only reduced divalent complexes.
A SIMPLE, STEREOCONTROLLED SYNTHESIS OF α-ALKYLIDENE-γ-BUTYROLACTONES
Authors: Tanaka Kazuhiko , Tamura Norikazu , Kaji Aritsune 
Published: July 2006

Abstract
Treatment of γ-butyrolactone with bis[methoxy(thiocarbonyl)] disulfide in the presence of 2.2 equivalents of lithium diisopropylamide followed by the addition of aldehydes gave predominantly (E)-α-alkylidene-γ-butyrolactones. In contrast, when the reaction was carried out in the presence of metal salt such as cuprous iodide or zinc chloride, (Z)-α-alkylidene-γ-butyrolactone was obtained as the major product.
SUBSTITUENT EFFECTS ON THE PHOTOCURRENT QUANTUM YIELDS OF PARA-SUBSTITUTED TETRAPHENYLPORPHYRINS
Authors: Yamashita Kazuo , Miyoshi Keiko , Osuka Atsuhiro , Suzuki Hitomi 
Published: July 2006

Abstract
The photocurrent quantum yields of para-substituted tetraphenylporphyrins were found to be increased by electron-donating groups. Semi-logarithmic plots of the quantum yields vs. the half-wave potentials for the first ring oxidations of the porphyrins or the Hammett σ of substituents yielded a linear relationship.
BICYCLO[n.2.2]BRIDGEHEAD ALKENES, SYNTHESIS AND ELECTROPHILIC ADDITION OF ACETIC ACID
Authors: Sakai Yasuo , Tobe Yoshito , Odaira Yoshinobu 
Published: July 2006

Abstract
The synthesis of bicyclo[n, 2.2]bridgehead alkenes (2a) and (2b) by the solvolytic rearrangement of the corresponding tricyclic acetates (3a) and (3b) in acetic acid and the electrophilic addition of acetic acid to anti-Bredt olefin (2a) are described.
VALIDITY OF METHOXYCARBONYL AS AN N-PROTECTING GROUP IN PEPTIDE SYNTHESIS: NEW SYNTHESIS OF MSH-RELEASE INHIBITING FACTOR
Authors: Irie Hiroshi , Nakanishi Hiromi , Fujii Nobutaka , Mizuno Yukio , Fushimi Tamaki , Funakoshi Susumu , Yajima Haruaki 
Published: July 2006

Abstract
N-Methoxycarbonyl (MOC)-amino acids regenerate the parent amino acids by treatment with dimethyl sulphide and methanesulphonic acid. Synthesis of MSH-Release Inhibiting Factor was accomplished using MOC-amino acids and applying the above mentioned deblocking method.
SYNTHESIS OF OLEFINS BY NICKEL-CATALYZED DECARBONYLATION OF S-(2-PYRIDYL) THIOATES
Authors: Goto Toshio , Onaka Makoto , Mukaiyama Teruaki 
Published: July 2006

Abstract
S-(2-Pyridyl) thioates, especially derived from secondary and tertiary carboxylic acids, are decarbonylated by use of a catalytic amount of nickel chloride and zinc powder to give olefins in good yields.
ASYMMETRIC HYDROGENATION OF α-ACYLAMINOACRYLIC ACIDS AND ESTERS WITH AXIALLY DISSYMMETRIC BISAMINOPHOSPHINE–RHODIUM COMPLEXES
Authors: Miyano Sotaro , Nawa Masayoshi , Hashimoto Harukichi 
Published: July 2006

Abstract
From easily resolved 2,2′-diamino-1,1′-binaphthyl were prepared axially dissymmetric bisphosphine ligands, (R)- and (S)-2,2′-bis(diphenylphosphinamino)-1,1′-binaphthyl; the rhodium-catalyzed asymmetric hydrogenation of α-acylaminoacrylic acids and esters gave the corresponding amino acids of up to 95% optical purity.
GAS CHROMATOGRAPHIC DETERMINATION OF NITRITE ION IN WATER USING THE SANDMEYER REACTION
Authors: Chikamoto Takeji , Nagata Shogo 
Published: July 2006

Abstract
An improved gas chromatographic method is presented for the determination of trace amount of nitrite ion (NO2−) in water. The method is based on the Sandmeyer reaction, i.e., the diazotization of p-bromoaniline by NO2− followed by reaction with CuCl in hydrochloric acid to form p-bromochlorobenzene. The derivative is determined by gas chromatography, employing an electron capture detector. The detection limit for NO2− is 0.5 ng/ml (ppb).
PHOTOINDUCED TWO-ELECTRON REDUCTION OF METHYL VIOLOGEN DIMER BY 2-PROPANOL THROUGH INTRAMOLECULAR PROCESS AND FORMATION OF VIOLOGEN RADICAL CATION DIMER
Authors: Furue Masaoki , Nozakura Shun-ichi 
Published: July 2006

Abstract
In the photoreduction of the newly synthesized methyl viologen dimer,1′,1″-trimethylene-bis(1-methyl-4,4′-bipyridinium) perchlorate, by 2-propanol, the exclusive formation of the stable radical cation dimer at room temperature was observed, which gave an unequivocal evidence for the intramolecular process.
FREE RADICAL CHAIN ELIMINATION REACTION (ERC1). CONVERSION OF VICINAL DINITRO COMPOUNDS OR β-NITRO SULFONES TO OLEFINS WITH TRIBUTYLTIN HYDRIDE
Authors: Ono Noboru , Miyake Hideyoshi , Tamura Rui , Hamamoto Isami , Kaji Aritsune 
Published: July 2006

Abstract
Vicinal dinitro compounds (1) or β-nitro sulfones (2) are converted to olefins in good yields on treatment with tributyltin hydride. This elimination proceeds by way of an electron transfer chain mechanism. The elimination from 1 is nonstereospecific and the elimination from 2 is stereospecific.
PRODUCTION OF HYDROGEN AND HYDROCARBON FROM CELLULOSE AND WATER
Authors: Kawai Maki , Kawai Tomoji , Tamaru Kenzi 
Published: July 2006

Abstract
H2, CH4 and CO are produced by the thermal reaction (300°C) of cellulose and water vapor using Pt, Pt–TiO2 and Ru/SiO2 as catalysts, among which the Ru/SiO2 catalyst showed the highest activity for direct production of CH4, and H2.
ISOLATION AND STRUCTURE OF A 330 NM UV-ABSORBING SUBSTANCE, ASTERINA-330 FROM THE STARFISH ASTERINA PECTINIFERA
Authors: Nakamura Hideshi , Kobayashi Jun-ichi , Hirata Yoshimasa 
Published: July 2006

Abstract
A new mycosporine-like amino acid with a characteristic UV-absorption maximum at 330 nm has been isolated from the starfish Asterina pectinifera, and its structure was determined to be 5.