bluuebunny/crossref_metadata_2025_split huggingface dataset:
STUDY ON RACEMIZATION IN OXIDATION-REDUCTION CONDENSATION BY THE COUPLING REACTION FOR THE FORMATION OF BOC-LEU-ILE-ASP(NH2)-LEU-OBUt
Authors: Matsueda Rei , Takahagi Hidekuni , Mukaiyama Teruaki 
Published: July 2006

Abstract
Racemization in the oxidation-reduction condensation was studied by the coupling reaction for the formation of Boc-Leu-Ile-Asp(NH2)-Leu-OBut , recently reported for the detection of racemization in the azide, dicyclohexylcarbodiimide +1-hydroxybenzotriazole methods, etc. The coupling reaction using triphenylphosphine and 2,2′-dithiodipyridine-1,1′-dioxide gave favorable results to the present racemization test on solid support as well as in solution synthesis.
THE STRUCTURE OF EPILUBIMIN, A STRESS METABOLITE FROM DISEASED POTATO TUBERS
Authors: Katsui Nobukatsu , Yagihashi Fujio , Matsunaga Akira , Orito Kazuhiko , Murai Akio , Masamune Tadashi 
Published: July 2006

Abstract
The structure of epilubimin, a stress metabolite isolated from diseased potato tubers, was determined as shown in formula 1 on the basis of the chemical and spectral data.
TETRABRIDGED FERROCENOPHANES AND A PRECURSOR OF PERFERROCENOPHANE
Authors: Hisatome Masao , Watanabe Naoyuki , Yamakawa Koji 
Published: July 2006

Abstract
[4] [4] [4] [3] Ferrocenophanes (5a and 5b) , tetrabridged ferrocenophanes, have been synthesized via lactic acid derivatives of [4] [4] [3] ferrocenophanes. A precursor of perferrocenophane, 5-(3-carboxypropyl)[4] [4] [4] [3] ferrocenophane (7), has been derived from 5a.
SYNTHESIS OF CLADINOSE ANALOGUES OF CARBOMYCIN B
Authors: Tatsuta Kuniaki , Tanaka Akihiro , Kinoshita Mitsuhiro , Umezawa Sumio 
Published: July 2006

Abstract
Cladinose analogues (2 and 8) of carbomycin B have been synthesized by regio- and stereoselective introduction of cladinose instead of mycarose into the ethylene acetal (3) of demycarosylcarbomycin B. Their antimicrobial activities are also presented.
OXIDATION OF NITROALKYLBENZENE WITH ELECTRO-GENERATED SUPEROXIDE ION
Authors: Sagae Hiromitsu , Fujihira Masamichi , Osa Tetsuo , Lund Henning 
Published: July 2006

Abstract
THe oxidation of nitroalkylbenzene with electro-generated superoxide ion was studied by cyclic voltammetry and controlled potential macro-electrolysis. The electrochemical reduction of oxygen in the presence of nitrotoluenes (o- and p-) and p-nitroethylbenzene yielded under mild conditions the corresponding nitrobenzoic acids from the former and p-nitroacetophenone plus 1-(p-nitrophenyl)ethanol from the latter.
ISOLATION OF TWO DIASTEREOMERS OF DICHLORO{2-(S)-[(n-BUTYLPHENYLPHOSPHINO)METHYL]PYRROLIDINE}PALLADIUM(II)
Authors: Kinoshita Isamu , Kashiwabara Kazuo , Fujita Junnosuke 
Published: July 2006

Abstract
A pair of new diastereomers, the isomerism of which came from a pair of chiral phosphorus atoms were obtained for [PdCl2L], where L denotes 2-(S)-[(n-butylphenylphosphino)methyl]pyrrolidine prepared from (S)-proline. The absolute configurations of these isomers were suggested on the basis of the PMR spectra.
SELECTIVE ALKYLATION AND DESELENENYLATION OF CYANOMETHYL PHENYL SELENIDE IN AQUEOUS MEDIUM, AND AN APPLICATION TO 1-CYANOCYCLOPROPENE SYNTHESIS
Authors: Masuyama Yoshiro , Ueno Yoshio , Okawara Makoto 
Published: July 2006

Abstract
The alkylation followed by the deselenenylation of cyanomethyl phenyl selenide (1) gave α,β-unsaturated nitriles. The method was applied to generate 1-cyanocyclopropene, which was trapped using anthracene.
PHOTO-LIGAND-SUBSTITUTION REACTION OF TRIS(ETHYLENEDIAMINE) COBALT(III) ION WITH N-BIS(2-HYDROXYETHYL)DITHIOCARBAMATE ION
Authors: Nakashima Michio , Kida Sigeo 
Published: July 2006

Abstract
Tris(ethylenediamine)cobalt(III) ion underwent a ligand substitution with N-bis(2-hydroxyethyl)dithiocarbamate ion(=L−) to form [CoL3] in aqueous solution, when the light (460–585nm) was irradiated. The quantum yield (0.343–0.845) of the reaction is unusually high compared to those of the photo-ligand-substitution reactions of cobalt(III) complexes so far known.
CONFORMATIONAL EQUILIBRIA OF 8-HALOGENO-8,9,10,11-TETRAHYDRO-7H-CYCLOOCTA(de)NAPHTHALEN-9-ONES
Authors: Kamada Toshihiro , Yamamoto Osamu 
Published: July 2006

Abstract
The titled α-haloketones (1–3) were prepared and the conformations were studied based on the NMR spectra. It was found that 1–3 exist as an equlibrium mixture of axial-boat (ab) and equatorial-boat (eb) conformers in solution with the ab overwhelmingly predominant (−ΔG°(101°C)=−1.6 kcal/mol). The conformation ab is in a puckered form in all of 1–3 as a result of steric compression effect.
STEREOSELECTIVE PUMMERER REARRANGEMENT OF PHENYLSULFINYLCYCLOPROPANES WITH ACETIC ANHYDRIDE
Authors: Masuda Toshiaki , Numata Tatsuo , Furukawa Naomichi , Oae Shigeru 
Published: July 2006

Abstract
The Pummerer reaction of cis- and trans-2-phenyl-1-(phenylsulfinyl)cyclopropanes and cis, syn- and cis, anti-2,3-dimethyl-1-(phenylsulfinyl)cyclopropanes afforded the stereoselective products.
AZAFULVENES 7. CYCLOADDITION REACTION OF 8-AZAHEPTAFULVENE TO KETENE
Authors: Yamamoto Kikuo , Kajigaeshi Shoji , Kanemasa Shuji 
Published: July 2006

Abstract
8-alkyl- and 8-aryl-8-azaheptafulvenes reacted with diphenyl-and biphenyleneketene affording the corresponding [8+2] cycloadducts in good yields. Similarly the reactions with phenylketene gave only trans [8+2] cycloadducts.
PHOTOCHEMISTRY OF 2-PHENYLATED CYCLOHEPTA-3,5-DIENONES
Authors: Ushiyama Hidehiko , Hagiwara Hisahiro , Sato Kazuhiro , Uda Hisashi 
Published: July 2006

Abstract
Acetone sensitized photolysis of 2-phenyl- and 2-methyl-2-phenylcyclohepta-3,5-dienones gives in about equal yield 2-substituted bicyclo[3.2.0]hept-6-en-3-ones and 6-substituted cyclohepta-2,4-dienones as the major products, while on direct irradiation both dienones undergo mainly decarbonylation to produce unstable trienes.
ORTHO-METHYLATION OF 2,3-XYLIDINE OVEP SOLID CATALYSTS
Authors: Matsumoto Tadashi 
Published: July 2006

Abstract
The methylation of 2,3-xylidine with methanol was carried out over various solid catalysts. Silver-alumina showed 70% selectivity in the methylation at the ortho-position. The activity and the selectivity of catalysts were briefly discussed in view of the acidic and basic properties of the catalysts.
A NOVEL ETHYNYLATION OF α-SUBSTITUTED MESITYL OXIDES
Authors: Fujita Yoshiji , Wada Fumio , Onishi Takashi , Nishida Takashi 
Published: July 2006

Abstract
The ethynylation of ketone (2) in liquid ammonia at −33°C with stoichiometric sodium acetylide afforded the corresponding alcohol (3 and 4). Similar treatment of 1 resulted in only a little isomerization to 2. Favorskii ethynylation under pressure at 0°C yielded a mixture of 1, 2, 3 and 4 without any detectable 5, whichever ketone 1 or 2 being used.
STEREOSELECTIVE TOTAL SYNTHESES OF (±)-RECIFEIOLIDE AND (R)-(+)-RICINELAIDIC ACID LACTONE
Authors: Narasaka Koichi , Yamaguchi Masahiko , Mukaiyama Teruaki 
Published: July 2006

Abstract
The naturally occurring macrolide, (±)-recifeiolide, was synthesized stereoselectively. (E)-11-Hydroxy-8-dodecenoic acid (5) was obtained stereoselectively from 11-hydroxy-8-dodecynoic acid by the reduction with lithium, and the acid (5) was cyclized to (±)-recifeiolide in excellent yield via its 6-phenyl-2-pyridyl ester. Similarly, (R)-(+)-ricinelaidic acid was lactonized to afford the corresponding lactone in high yield.
COPPER-CATALYZED OXIDATIVE COUPLING OF DIPHENYLMETHANIMINE PROMOTED BY BICYCLOAMIDINES
Authors: Hayashi Hiromu , Tanaka Toshikazu , Shigemoto Naoya , Okazaki Tatsuya 
Published: July 2006

Abstract
Benzophenone azine was obtained in a high yield by copper-catalyzed oxidative coupling of diphenylmethanimine in the presence of bicycloamidines, 1,8-diazabicyclo[5.4.0]undecene-7(DBU) or 1,5-diazabicyclo[4.3.0]nonene-5(DBN) in tetrahydrofuran or 1,4-dioxane as a solvent.
THE COBALT–BISDEHYDROCORRIN COMPLEX AS A VITAMIN B12 MODEL
Authors: Murakami Yukito , Aoyama Yasuhiro , Nakanishi Shigenori 
Published: July 2006

Abstract
The (AD-bisdehydrocorrinato)dicyanocobalt(III) complex [Co(III)(CN)2(BDHC)] was reduced with sodium borohydride to give the corresponding cobalt(I) complex, which underwent alkylation with an alkyl bromide or iodide at the axial position. The second-order rate constants for reactions of Co(I)(BDHC) with alkyl halides in aqueous THF at 25.0±0.1°C reveal that an extra steric effect, which is not expected for the cobalt corrinoid, is exerted by the 1,3-diaxial-type interaction between angular methyl groups placed at C1 and C19 of BDHC and an alkyl groups bound to the nuclear cobalt. The present complex bears a resemblance to the cobalt corrinoid in various aspects.
TOTAL SYNTHESIS OF 14-FLUOROPROSTAGLANDIN F2α AND 14-FLUOROPROSTACYCLIN
Authors: Grieco Paul A , Yokoyama Yuusaku , Nicolaou Kyriacos C , Barnette William E , Smith J Brian , Ogletree Martin , Lefer Alan M 
Published: July 2006

Abstract
The synthesis of (±)-14-fluoroPGF2α methyl ester (1), (±)-15-epi-14-fluoroPGF2α methyl ester (12), and (±)-14-fluoroprostacyclin (2) is detailed. Prostaglandins 1 and 12 have been evaluated for pregnancy interruption in the hamster and smooth muscle stimulating effects on gerbil colon and hamster uterine strips. Prostacyclin 2 was evaluated for inhibition of human blood platelet aggregation and dilation of the isolated perfused cat coronary artery.
A SYNTHESIS OF 1,3-DIKETONES BY ELIMINATION OF SELENIUM FROM Se-ACYLMETHYL SELENOCARBOXYLATES
Authors: Ishihara Hideharu , Hirabayashi Yoshio 
Published: July 2006

Abstract
Se–Acylmethyl selenocarboxylates, prepared by a reaction of potassium selenocarboxylates with α-bromoketones, readily extruded elemental selenium by a treatment with potassium tert-pentoxide to form 1,3-diketones in good yields.
EFFECT OF PH ON THE FLOCCULATION OF PHOSPHATIDYLCHOLINE VESICLE WITH TRIMETHYLAMMONIUM GLYCOL CHITOSAN IODIDE
Authors: Fujii Susumu , Kokufuta Etsuo , Furusawa Kunio 
Published: July 2006

Abstract
Effect of pH on the flocculation of phosphatidylcholine vesicle with trimethylammonium glycol chitosan iodide (MGCH) was investigated over the pH region of 3–12. The flocculation based on the salt-linkage formation between phosphate group on the vesicle surface and trimethylammonium group in MGCH is affected by pH of bulk-phase.
CONFORMATIONAL ANALYSIS AND ISOLATION OF THE ISOMERS OF [Co(hexaen)]3+
Authors: Yoshikawa Yuzo 
Published: July 2006

Abstract
The conformational analysis of the meso and two racemic isomers of [Co(hexaen)]3+ (Fig. 1) has been carried out and their energy-minimized structures have been determined. Based on these results, the isolation of the three isomers was achieved.
OXIDATION OF 5H-1,2,3-DITHIAZOLE DERIVATIVE. FORMATION OF A NEW TYPE OF THIOLSULFINATE AND ITS DECOMPOSITION INVOLVING OXYGEN MIGRATION
Authors: Inagaki Yoshio , Okazaki Renji , Inamoto Naoki 
Published: July 2006

Abstract
Oxidation of 5H-1,2,3-dithiazole derivative equilibrated with 2,4,6-tri-t-butyl-N-thiosulfinylaniline by m-chloroperbenzoic acid gives two kinds of thiolsulfinate type compounds. One of them undergoes thermal decomposition involving oxygen migration, and the other undergoes unusually facile retro-ene reaction.
HIGHLY ACTIVE AND LESS AMMONIA FORMING Fe2O3–CuO–Al2O3 CATALYST FOR NO–H2–CO REACTION
Authors: Nozaki Fumio , Kaneko Akira , Maruko Yoshiaki , Sodesawa Toshiaki 
Published: July 2006

Abstract
Fe2O3–CuO–Al2O3 catalyst of a CuO/Fe2O3 molar ratio near 0.5 showed a high activity for NO–H2–CO reaction, with a simultaneous formation of NH3 being very limited. The catalyst also exhibited a high activity for decomposition of NH3 when the reaction temperature was higher than 500°C.
REACTION OF STYRYL-TYPE BIS-DIMETHYLGLYOXIMATO(PYRIDINE) COBALT(III), STYRYL COBALOXIMES, WITH 1,3-BENZODITHIOLYLIUM TETRAFLUOROBORATE
Authors: Miura Kyo , Tada Masaru 
Published: July 2006

Abstract
Styryl-type cobaloximes give the coupling products, 2-styryl-1,3-benzodithioles, by the reaction with 1,3-benzodithiolylium tetrafluoroborate. The trans isomers of styryl cobaloximes are more reactive and more stereospecific than the cis isomers. A mechanism involving a CT-state and electron transfer is proposed.
31P NMR STUDIES ON THE MECHANISM OF ASYMMETRIC HYDROGENATION CATALYZED BY RHODIUM(I) COMPLEXES WITH CHIRAL PYRROLIDINODIPHOSPHINE LIGAND
Authors: Ojima Iwao , Kogure Tetsuo 
Published: July 2006

Abstract
The structures of rhodium(I) complexes with a chiral pyrrolidinodiphosphine, BPPM, are studied by means of 31P NMR spectroscopy. The spectra show that there are two conformational isomers without substrate. However, the complex takes a preferred conformation by the coordination of an olefinic substrate. The results are well accommodated by the “induced fit” model.
CARBOXYLATION OF DIOLS BEARING SHORT CARBON CHAINS WITH CARBON MONOXIDE IN THE PRESENCE OF HF–SbF5
Authors: Yoneda Norihiko , Takahashi Yukio , Sakai Yukio , Suzuki Akira 
Published: July 2006

Abstract
Diols having a small number of C-atoms are known to be not carboxylated with carbon monoxide or formic acid using strong acid (Koch–Haaf acid synthesis). However, diols with four or more C-atoms, except their vicinal derivatives, give the corresponding carboxylated products in good yields by the reaction of carbon monoxide under mild conditions in the presence of HF–SbF5.
COMPLEXOMETRIC TITRATIONS BASED ON THERMOCHROMISM
Authors: Yamada Mutsuo , Nakada Shoji , Ito Tasuku , Fujimoto Masatoshi 
Published: July 2006

Abstract
Based on the thermochromism observed for the metal complexes of Xylenol Orange, complexometric titrations of Co2+, Ni2+, Cu2+, and Zn2+ ions were successfully carried out in a lower pH region where the titrations at room temperature were impossible so far.
ALKYL–ALKYL COUPLING OF LITHIUM ALKYLALUMINATES AND ALKYL–ALLYL CROSS-COUPLING OF THE ALUMINATES WITH ALLYLIC HALIDES BY THE USE OF COPPER (II) ACETATE: AN APPLICATION OF THE CATALYTIC HYDROALUMINATION OF OLEFINS TO ORGANIC SYNTHESIS
Authors: Isagawa Kakuzo , Ohige Manabu , Tatsumi Kimio , Otsuji Yoshio 
Published: July 2006

Abstract
Lithium alkyl-1-trihydroaluminates, which are prepared by the catalytic hydroalumination of α-olefins with LiAlH4 in the presence of a catalytic amount of a titanium–aluminium complex, undergo the alkyl–alkyl coupling reaction upon treatment with copper (II) acetate. The reaction of lithium alkylaluminates with allylic halides in the presence of copper (II) acetate affords the alkyl–allyl cross-coupling products.
POTENTIOMETRIC BEHAVIOR OF AQUEOUS SOLUTIONS OF MALEIC ACID-STYRENE COPOLYMER WITH ADDED BIVALENT METAL IONS
Authors: Yamashita Fumitaka , Komatsu Tsuyoshi , Nakagawa Tsurutaro 
Published: July 2006

Abstract
The interaction of copoly(maleic acid-styrene), MASt, with bivalent metal ions, Mn(II), Co(II), Ni(II), Cu(II), and Zn(II), was investigated by pH titration method at 25 °C and the ionic strength of 0.1 mol/kg. The titration curves in the absence and presence of bivalent metal ions overlap in some dissociation region of the first neutralization step.
SYNTHESIS AND THE MOLECULAR STRUCTURE OF ACETATOTRICHLORO(TRIPHENYLPHOSPHINE OXIDE)TIN(IV)
Authors: Masaki Mitsuo , Matsunami Satoshi , Okimoto Kiyomi , Ueda Hideo 
Published: July 2006

Abstract
Acetatotrichloro(triphenylphosphine oxide)tin(IV) was synthesized by the reaction of stannic chloride, acetic acid and triphenylphosphine oxide or by the reaction of dichlorotin(IV) diacetate with tetrachlorobis(triphenylphosphine oxide)tin(IV). The structure of the complex was determined by the X-ray method. The molecule is monomeric and tin atom is six-coordinated.
REACTION AND STEREOCHEMISTRY OF 1,2,3-TRITHIANE RING
Authors: Kato Atsushi , Hashimoto Yohei , Otsuka Isoji , Nakatsu Kazumi 
Published: July 2006

Abstract
Oxidative desulfurization of 5-hydroxy-1,2,3-trithiane affords cis- and trans-4-hydroxy-1,2-dithiolane-1-oxide. X-Ray structure determination of 1,2,3-trithian-5-yl N-methylcarbamate reveals that the trithiane ring takes a chair conformation with S–S = 2.040(4) Å(av), S–S–S = 101.5(3)°, and S–S–C = 98.6(3)°(av), and that the side chain places in the equatorial position.
DETERMINATION OF ANTIMONY BY SUB- AND SUPER-EQUIVALENCE METHOD OF ISOTOPE DILUTION ANALYSIS
Authors: Kambara Tomihisa , Yoshioka Hiroe 
Published: July 2006

Abstract
Trace amount of antimony (0.45∼0.28 μg/ml) has been determined by sub- and super-equivalence method in isotope dilution analysis. Substoichiometric amount of Sb(III) was oxidized to Sb(V) by potassium dichromate and separated by BPHA (in CHCl3) extraction. It has been found that the determination can be performed within an accuracy of 2% in the wide region of acid concentration.
SYNTHESIS OF GLYCINE BY THE AMMONOLYSIS OF TETRACHLOROETHANE AND TRICHLOROETHYLENE
Authors: Inoue Masami , Enomoto Saburo 
Published: July 2006

Abstract
Glycine was obtained selectively by heating of tetrachloroethane with an excess amount of aqueous ammonia. Trichloroethylene which is separated as an intermediate compound in the early period of the ammonolysis also formed glycine. The yield increased by the addition of sodium carbonate and reached 54.6 mole% at 170° for 2 hr.
MESOMORPHIC PROPERTIES OF N-(4-ETHYLPYRIDINIO)-4-ALKOXYBENZAMIDATES: YLIDE AS A LIQUID CRYSTAL
Authors: Kise Hideo , Nishisaka Yasuyoshi , Asahara Teruzo , Seno Manabu 
Published: July 2006

Abstract
N-(4-Ethylpyridinio)-4-alkoxybenzamidates (1) were prepared and their phase transition properties were determined. The ylides with long alkoxyl groups (1, n=4–8) exhibit liquid crystallinity, while methoxy, ethoxy, and propoxy homologs are not mesomorphic.
A NEW SYNTHETIC ROUTE TO 1,1-BIS(METHYLTHIO)-1,3-BUTADIENES VIA THE [2,3]SIGMATROPIC REARRANGEMENT OF DITHIOCARBENES
Authors: Nakai Takeshi , Mikami Koichi 
Published: July 2006

Abstract
Thermolysis of the sodium salts of S-allyl-S′-methyldithiocarbonate tosylhydrazones (4) followed by methylation provided good yields of the corresponding 1,1-bis(methylthio)-1,3-butadiene (1) via the [2,3]sigmatropic rearrangement of the dithiocarbenes(5).
THE PREPARATION OF 4-METHYL-1,3,4,5-TETRAHYDROPYRROLO[4,3,2-de]ISOQUINOLINE AND ITS CONVERSION INTO 3,4-DISUBSTITUTED INDOLES
Authors: Somei Masanori , Hashiba Kazuhiko , Yamada Fumio , Maekawa Toshio , Kimata Toshihiko , Kaneko Chikara 
Published: July 2006

Abstract
Various 3,4-disubstituted indoles were prepared from 4-methyl-1,3,4,5-tetrahydropyrrolo[4,3,2-de]isoquinoline which was obtained readily by the two novel synthetic routes starting from 2-methyl-5-nitroisoquinolinium iodide.
RING ENLARGEMENT OF THE PHOTOCHEMICALLY GENERATED endo-2,3-TRIMETHYLENENORBORN-exo-2-YLCARBINYL CATION. OCCURRENCE OF A DIFFERENT REACTION PATHWAY FROM THAT IN SULFURIC ACID
Authors: Takaishi Naotake , Miyamoto Norioki , Inamoto Yoshiaki 
Published: July 2006

Abstract
endo-2,3-Trimethylenenorborn-exo-2-ylcarbinyl cation (1a), formed by irradiating the corresponding iodide (1) in heptane, rearranged mainly to tricyclo[6.2.1.02,6]undec-2(6)-ene (2), an entirely different product from the same cation in sulfuric acid. The difference is interpreted with the “free” character of the cation produced in a high energy, photochemical process.
SINGLET-OXYGEN REACTIONS OF 1,4-CYCLOHEXADIENE. A SYNTHETIC APPROACH TO THE BENZENE-1,4-ENDOPEROXIDE
Authors: Saito Isao , Tamoto Koji , Katsumura Akifumi , Sugiyama Hiroshi , Matsuura Teruo 
Published: July 2006

Abstract
Dye-sensitized photooxygenation of 1,4-diphenyl-1,4-cyclohexadiene (1) at 0 °C followed by reduction with sodium bisulfite gave 1,4-diphenyl-7-hydroxy-5,6-dioxabicyclo[2.2.2]oct-2-ene (2). Mesylation of 2 followed by treatment with potassium t-butoxide yielded p-terphenyl, accompanied with the generation of singlet oxygen.
SYNTHESIS OF E- AND Z-ISOMERS OF 3-(α-THIOETHOXYMETHYLENE)OXINDOLE: CHARACTERIZATION AND RELATIVE STABILITY OF THE TWO ISOMERS
Authors: Kaneko Chikara , Kawai Shinji , Somei Masanori 
Published: July 2006

Abstract
The E- and Z-isomers of 3-(α-thioethoxymethylene)oxindole have been synthesized for the first time and the verification that the E-isomer is more stable than the Z-isomer is provided experimentally.
SYNTHESIS OF CYCLOPENTABBCANOM
Authors: Nokami Junzo , Matsuura Nobuyoshi , Sueoka Tatsufumi , Eusumoto Yoshihisa , Kawada Mikio 
Published: July 2006

Abstract
Ring contraction by the Favorskii-type rearrangement of α-sulfonyloxycyclohexadecanone (3) gave the corresponding cyclopentadecanecarboxylic acid (5) in a good yield. The acid (5) was converted to cyclopentadecanone (7) via α-phenylthio- (or α-methylthio-)cyclopentadecanecarboxylic acid (6).
A CONVENIENT ROUTE TO 5′-MODIFIED PSEUDOISOCYTIDINES AND 2-THIOPSEUDOURIDINES
Authors: Sato Tsuneo , Watanabe Makoto , Noyori Ryoji 
Published: July 2006

Abstract
A stereo- and regiocontrolled synthesis of 5′-alkylated or -arylated pseudoisocytidines and 2-thiopseudouridines is described.
REACTION OF ALDEHYDES WITH 1,3-DICARBONYL COMPOUNDS IN THE PRESENCE OF POTASSIUM CARBONATE. A CONVENIENT SYNTHESIS OF α,β-UNSATURATED CARBONYL COMPOUNDS VIA DEACYLATION
Authors: Tsuboi Sadao , Uno Takaaki , Takeda Akira 
Published: July 2006

Abstract
Condensation of aldehydes with 1,3-dicarbonyl compounds such as 2,4-pentanedione (2), ethyl 2-chloro-3-oxobutanoate (4), 3-chloro-2,4-pentanedione (5), and α-acetyl-γ-butyrolactones, catalyzed by potassium carbonate proceeded via deacylation under mild conditions to give α,β-unsaturated ketones and esters in one step.
SYNTHESES AND PROPERTIES OF DIALKYLCYCLOPROPENYLIDENE PALLADIUM COMPLEXES
Authors: Yoshida Zen-ichi , Kamitori Yasuhiro 
Published: July 2006

Abstract
As the transition metal complexes of dialkylcyclopropenylidene, the palladium complexes of 2,3-di-isopropyl- and 2,3-di-t-butyl cyclopropenylidene, trans-X2-μ-X2Pd2II (C3R2)2, (1; X=Cl, 1′; X=Br), cis-(n-Bu3P)Cl2PdIIC3R2 (2), and [trans-(n-Bu3P)2ClPdIIC3R2]+ClO4− (3), have been synthesized. The 13C nmr and ir spectra of these complexes have been discussed for the structural elucidation.
A DIRECT SYNTHESIS OF MONOCARBAMIC ESTER OF 1,2-DIOL FROM CARBON DIOXIDE, EPOXIDE AND AMINE
Authors: Yoshida Yasuhiko , Inoue Shohei 
Published: July 2006

Abstract
Monocarbamic ester of 1,2-diol derived from the corresponding 1,2-epoxide was obtained directly in a good yield by the reaction of epoxide, carbon dioxide, and primary or secondary amine.
SOLUBILITY PHASE DIAGRAM OF BIS(ETHYLENEDIAMINE)OXALATOCOBALT(III) (1R,3S,4S,7R)-3-BROMOCAMPHOR-9-SULFONATE
Authors: Fuyuhiro Akira , Yamanari Kazuaki , Shimura Yoichi 
Published: July 2006

Abstract
The solubility isotherm of a ternary system, Λ-[Co(ox)(en)2](d-C10H14OBrSO3)-Δ-[Co(ox)(en)2](d-C10H14OBrSO3)- H2O, was determined between 5 and 25 °C. It was found that the resolving agent (1R,3S,4S,7R)-3-bromocamphor-9-sulfonate ion is applicable to the optical resolution of the [Co(ox)(en)2]+ ion below 19 °C, in spite of the formation of a pseudo racemic compound Λ-[Co(ox)(en)2]·Δ-[Co(ox)(en)2](d-C10H14OBrSO3)2·2H2O.
POTASSIUM FERRATE, A NEW SELECTIVE OXIDIZING AGENT
Authors: Tsuda Yoshiko , Nakajima Shoichi 
Published: July 2006

Abstract
Potassium ferrate, which can be easily and economically prepared but has never been used in organic syntheses, was found to be a new efficient selective oxidizing agent. It works at room temperature on a variety of benzyl alcohols to yield benzaldehydes without further oxidation.
THE REACTION OF AZIDOFORMATES WITH ALLYL ETHERS IN THE PRESENCE OF TRANSITION METAL COMPLEXES
Authors: Migita Toshihiko , Chiba Mitsuo , Kosugi Masanori , Nakaido Setsuko 
Published: July 2006

Abstract
Palladium complex catalyzed reaction of azidoformates with allyl ethers afforded N-carboalkoxyimines III as major products, contrasting with the corresponding photo-induced and thermal reactions. Formation of III is thought to involve α-C–H insertion of carboalkoxy nitrene as a primary step.
SYNTHESIS OF PROSTAGLANDIN ANALOGS I. NOVEL AND EFFECTIVE INTERMEDIATES FOR MODIFICATION OF ω-CHAIN
Authors: Wakatsuka Hirohisa , Konishi Yoshitaka , Kori Seiji , Hayashi Masaki 
Published: July 2006

Abstract
A simple and effective preparation of the useful intermediates for the synthesis of the prostaglandin (PG) analogs which are modified at ω-chain is reported.