bluuebunny/crossref_metadata_2025_split huggingface dataset:
9-Methyl-9-nitro-10-nitromethylene-9,10-dihydroanthracene. The First Isolation of a Proposed Intermediate for the Side-chain Nitration of Arenes under Heterolytic Conditions
Authors: Suzuki Hitomi , Kimura Emiko , Katayama Toshimi , Ogawa Takuji 
Published: July 2006

Abstract
Reaction of 9-methy 1-10-nitromethylanthracene with nitric acid in dichloromethane at low temperatures followed by treatment with DABCO gave 9,10-bis(nitromethy1(anthracene and the title compound. The latter is converted by further action of nitric acid to 9-methy1-10-trinitromethylanthracene, 10-methyl-9-anthrylnitrile oxide, and other oxidation products.
Structures of Scuterivulactone C1 and C2 by Two-Dimensional NMR Spectroscopy. New Clerodane Type Diterpenoids from Scutellaria rivularis WALL.
Authors: Kikuchi Tohru , Tsubono Koji , Kadota Shigetoshi , Kizu Haruhisa , Imoto Yoshitaka , Tomimori Tsuyoshi 
Published: July 2006

Abstract
Two new clerodane type diterpenoid lactones, scuterivulactone C1 and C2, have been isolated from the whole herbs of Scutellaria rivularis WALL. and their structures have been elucidated by means of 2-D NMR spectroscopy including INADEQUATE and 1H–13C long-range COSY.
Formation of Poly(lactide) with Controlled Molecular Weight. Polymerization of Lactide by Aluminum Porphyrin
Authors: Trofimoff Laurence , Aida Takuzo , Inoue Shohei 
Published: July 2006

Abstract
Poly(lactide) with narrow molecular weight distribution was obtained by the ring-opening polymerization of D-lactide with (5,10,15,20-tetraphenylporphinato)aluminum alkoxide as initiator. The polymerization was demonstrated to proceed via the ring-opening of lactide at the acyl-oxygen bond to give (porphinato)aluminum alkoxide as the growing species.
An Acid Dependence of the Photdsubstitution of Tris(1,10-phenanthroline)ruthenium(II). Intermediate with a Monodentate Phenanthroline Ligand
Authors: Tachiyashiki Satoshi , Nagao Noriharu , Mizumachi Kunihiko 
Published: July 2006

Abstract
The quantum yield of the photosubstitution of tris(1,10-phenanthroline )ruthenium(II) increased steeply with the increase in acid (HCl or CF3SO3H) concentration to reach a plateau at the acid concentration higher than 0.1 mol dm−3, indicating the protonation to a reaction intermediate of the complex, probably to a nitrogen atom in the reaction intermediate with a monodentate phenanthroline ligand.
Thermogravimetric Analyzer(TG)-Gas Chromatography(GC)/Mass Spectrometry(MS) and Pyrolytic Studies of 1,6-Bis(2-oxooxazolidin-3-ylcarbonylamino)hexane
Authors: Shimasaki Choichiro , Murai Atsuko , Sakai Yukiko , Tsukurimichi Eiichi 
Published: July 2006

Abstract
1,6-Bis(2-oxooxazolidin-3-ylcarbonylamino)hexane (1) was prepared from 2-oxazolidinone and hexamethylenediisocyanurate using triethylenediamine as a catalyst in benzene. A TG effluent gas is collected in a cold trap and then directly injected into a GC for separation, the MS for unequivocal identification. The 13 effluent compounds from the thermal degradation of 1 were identified.
The Catalytic Asymmetric Michael Reaction of Tin(II) Enethiolates
Authors: Yura Takeshi , Iwasawa Nobuharu , Narasaka Koichi , Mukaiyama Teruaki 
Published: July 2006

Abstract
The catalytic asymmetric Michael reaction of tin(II) enethiolates forming 5-oxodithioesters in high yield with moderate to good enantioselectivity is achieved by employing catalytic amounts of stannous triflate and chiral diamine.
Synthesis of New Type Stable Heterotriene. Conjugated Dienic Thioketone
Authors: Karakasa Takayuki , Moriyama Satoshi , Motoki Shinichi 
Published: July 2006

Abstract
2-Phenyl-3-thiobenzoyl-5,6-dihydrobenzo[h]-2H-thiochromene was synthesized in 4 steps from 2-(phenylthio)methylene-1-tetralone. The thione reacted as a heterodiene with norbornene to give the corresponding [4+2]cycloadduct.
Catalytic Reduction of Diphenylacetylene by Zinc over Palladium-Carbon Using Viologens as Electron Mediators
Authors: Shosenji Hideto , Nakano Yasuhiro , Yamada Kimiho 
Published: July 2006

Abstract
Diphenylacetylene was reduced over palladium–carbon in methanol–water mixture in presence of zinc using N,N′-dialkyl-4,4′-bipyridinium ions (viologens) as mediators giving cis-stilbene as the major product and bibenzyl as the minor one. The reaction involved the direct contact of zinc with the catalyst.
Synthesis and Crystal Structure of a Dinuclear Iron Tetracarbonyl Complex Containing a Ligand , η5, η5-C5Me4CH2CH2CH2C5Me4
Authors: Tobita Hiromi , Habazaki Hiroki , Shimoi Mamoru , Ogino Hiroshi 
Published: July 2006

Abstract
A dinuclear iron carbonyl complex with trimethylene-bridged permethylcyclopentadienyl rings as a ligand, [Cp2(3)Fe2(CO)4] (1) and its oligomeric derivative [Cp2(3)Fe2(CO)4]n (2) were Synthesized, where Cp2 represents the ligand, η5, η5-C5Me4CH2CH2CH2C5Me4. The oligomeric mixture 2 was easily converted to monomer 1, and crystal structure of 1 was determined.
Fulgides as Efficient Photochromic Compounds. Role of the Substituent on Furylalkylidene Moiety of Furylfulgides in the Photoreaction
Authors: Yokoyama Yasushi , Goto Takakazu , Inoue Tetsushi , Yokoyama Masato , Kurita Yukio 
Published: July 2006

Abstract
Quantum yields of photoreactions of furylfulgides having Me, Et, n-Pr, or i-Pr on the furylalkylidene moiety were measured. The E–Z isomerization was greatly suppressed and the cyclization was accelerated when the alkyl group (R) became bulkier. When R was i-Pr, no E–Z isomerization was observed and the quantum yield of the colorizing cyclization was 0.62.
Freezing of Equilibrium of 1,2,3-Triazole and 3 (5)-Methylpyrazole by Complex Formation with 1,1-Bis(2,4-dimethylphenyl)but-2-yn-1-ol, and X-Ray Crystal Structure of the Complexes
Authors: Toda Fumio , Tanaka Koichi , Elguero Jose , Stein Zafra , Goldberg Israel 
Published: July 2006

Abstract
From an equilibrium mixture of two tautomers, 1H- and 2H-1,2,3-triazole, the relatively unstable 1H-isomer was isolated in pure state as a 1:1 complex with 1, 1-bis(2,4-dimethylphenyl)but-2-yn-1-ol. The two equilibrating tautomers of almost the same stability, 3- and 5-methyltriazole, were also isolated in pure state as a 1:1:1 complex of these and the host compound.
Design of a New Host Compound, 2,2-Di(p-hydroxyphenyl)propane, and Crystal Structure of Its 1:1 Complex with Methylhydrazine
Authors: Toda Fumio , Tanaka Koichi , Hyoda Tosiharu , Mak Thomas C W 
Published: July 2006

Abstract
A new host compound, 2,2-di(p-hydroxyphenyl)propane, which exhibits high inclusion ability towards phenols, amines, and hydrazines, has been designed. The crystal structure of its 1:1 complex with methylhydrazine comprises centrosymmetric cyclic dimeric units consolidated by O–H···N hydrogen bonding.
Optical Resolution of (±)-Fenfluramine and (±)-Norfenfluramine by Preferential Crystallization
Authors: Coquerel Gérard , Bouaziz Roger , Brienne Marie-Josèphe 
Published: July 2006

Abstract
Five salts of (±)-fenfluramine (F) and three salts of (±)-norfenfluramine (N) have been identified as being conglomerates. Six of these salts could be resolved by preferential crystallization.
Regioselective P–O(2′) Cleavage of Cytidine 2′,3′-Cyclic Monophosphate Catalyzed by α-Cyclodextrin
Authors: Komiyama Makoto 
Published: July 2006

Abstract
Regioselective cleavage (selectivity 98%) of the P–O(2′) bond of cytidine 2′,3′-cyclic monophosphate is carried out at pH 11.08, 20 °C by use of α-cyclodextrin as catalyst. Without α-cyclodextrin, the selectivity is only 47% due to concurrent cleavage of the P–0(3′) bond. The regioselective catalysis is ascribed to the formation of a complex between α-cyclodextrin and the monophosphate.
Lactucaxanthin Accumulation and Stacking in the Thylakoid Membrane of a Chlorella Mutant Strain
Authors: Hashizume Hiroshi , Takayama Mami , Satoh Takeya , Ohashi Kensaku 
Published: July 2006

Abstract
Lactucaxanthin, instead of violaxanthin which is an essential carotenoid for violaxanthin cycle, and zeaxanthin were identified in the extract from a mutant strain of green algae, Chlorella ellipsoidia, by proton NMR spectroscopy. The positive exiton chirality was observed by the CD measurements, suggesting that the stacking with these xanthophylls was of the right handed helical mode in the chlorophyll-deficient thylakoid membrane.
Cobalt (II) Chloride Catalysed Regioselective Cleavage of Oxiranes with Chlorotrimethylsilane
Authors: Iqbal Javed , Khan Mohd Amin 
Published: July 2006

Abstract
Oxiranes can be cleaved regioselectively with chlorotrimethysilane in presence of cobalt(II) chloride to the corresponding O-silylated vicinal chlorohydrins in excellent yields.
Highly Selective Synthesis of Phenanthryl Acetates by Palladium Catalyzed Cyclocarbonylation of Naphthylallyl Acetates
Authors: Iwasaki Masakazu , Matsuzaka Hiroyuki , Hiroe Yoshitaka , Ishii Youichi , Koyasu Yukio , Hidai Masanobu 
Published: July 2006

Abstract
Palladium catalyzed cyclocarbonylation of 3-naphthylallyl acetates selectively affords phenanthryl acetates in good yields.
Boron Trifluoride-Assisted Ziegler–Zeiser Reaction of Perfluoroalkyllithiums, An Efficient Synthesis of Perfluoroalkylated Heterocycles
Authors: Uno Hidemitsu , Okada Shin-ichiro , Shiraishi Yasukazu , Shimokawa Kazuhiro , Suzuki Hitomi 
Published: July 2006

Abstract
Quinoline, isoquinoline, quinaldine, phthalazine, and quinoxaline are all found to react smoothly with perfluoroalkyllithiums in the presence of BF3·OEt2, giving the corresponding perfluoroalkyl addition and/or substitution products in good yields. Perfluoroalkylation occurs at the carbon atom next to the nitrogen.
p-Bis(diphenylhydrosilyl)benzene. A Useful Reagent for the Deoxygenation of Alcohols via Acetates
Authors: Sano Hiroshi , Takeda Toshimitsu , Migita Toshihiko 
Published: July 2006

Abstract
Acetates which were derived from primary, secondary, and tertiary alcohols were deoxygenated to the corresponding hydrocarbons in high yield by p-bis(diphenylhydrosilyl)benzene under homolytic conditions.
A Solid-State Amperometric Oxygen Sensor Using NAFION Membrane Operative at Room Temperature
Authors: Kuwata Shigeki , Miura Norio , Yamazoe Noboru 
Published: July 2006

Abstract
New type amperometric oxygen sensors using a NAFION membrane were investigated for monitoring oxygen partial pressure at room temperature. The sensor element finally constructed had a structure in which an electrochemical cell was combined with a hydrogen-generation system and a gas-diffusion layer. Its sensing current under the short-circuit condition was found to vary linearly with the oxygen partial pressure. The 90% response time was about 3 min at 25 °C.
The Intramolecular Interaction in the Excited State of 1-Pyrenylmethyl 9-Anthracenecarboxylate
Authors: Iwamura Michiko , Takuma Keiichi , Koga Noboru , Iwamura Hiizu 
Published: July 2006

Abstract
1-Pyrenylmethyl 9-anthracenecarboxylate exhibits an intramolecular exciplex emission. The electron transfer from the pyrene to the anthracenecarboxylate chromophore has been shown by the effects of solvent and temperature on the fluorescence spectra to drive the formation of the exciplex in spite of the unfavorable s-cis conformation of the carboxylate C–O bond.
cis–trans Reversible Photoisomerization of an Amphiphilic Azobenzene Derivative in Its Pure LB Film Prepared as Polyion Complexes with Polyallylamine
Authors: Nishiyama Katsuhiko , Fujihira Masamichi 
Published: July 2006

Abstract
By using polyallylamine (PAA) for the aqueous subphase, the pure LB films of an azobenzene derivative with a long alkyl-chain showed reversible cis–trans photoisomerization due to the relatively large cross section of the molecule determined by the surface density of the ammonium cations of protonated PAA.
Highly Ion-selective and Super Ion-conductive Solid Electrolyte Thin Films of AgCl Supported in a Porous Glass
Authors: Ichikawa Atsushi , Komiyama Hiroshi 
Published: July 2006

Abstract
A solid electrolyte thin film of AgCl was prepared in a porous silica plate by supplying silver nitrate and sodium chloride aqueous solutions to the opposite faces of the porous plate. The film showed an extremely selective conductivity of silver ion, greater than that in AgCl crystal by seven orders of magnitude.
Substitution Reaction of Ketene Dithioacetals with Carbon Electrophiles by the Promotion of Trityl Chloride-Tin(II) Chloride or Trimethylsilyl Chloride-Tin(II) Chloride Catalyst System
Authors: Mukaiyama Teruaki , Sugumi Hiroyuki , Uchiro Hiromi , Kobayashi Shu 
Published: July 2006

Abstract
In the presence of catalytic amounts of trityl chloride or trimethylsilyl chloride and tin(II) chloride, ketene dithioacetals smoothly react with allyl methyl ethers or α,β-unsaturated orthoesters to afford the corresponding allyl or alkoxycarbonylethyl substituted ketene dithioacetals in good yields.
Preparation of Titania-Supported V–Mo–O Oxide as Highly Active Catalysts for the Simultaneous Removal of SO2 and NO from Exhausts
Authors: Teraoka Yasutake , Yamashita Akihiro , Yamazoe Noboru 
Published: July 2006

Abstract
The titania supported V–Mo–O prepared from VOCl3 and Mo(CO)6 was found to be very active for the simultaneous removal of SO2 and NO. It was shown that the V–Mo–O oxide was supported as an amorphous phase and formed a surface compound similar to vanadium oxysulfate at a steady working state.
Rapid Solidification of (2-Hydroxyethyl)trimethylammonium Silicate
Authors: Hasegawa Isao , Sakka Sumio 
Published: July 2006

Abstract
A large amount of solids of (2-hydroxyethyl)trimethylammonium silicate, whose silicate skeleton has the double four-membered ring structure, was abruptly separated out from the mixed solution of (2-hydroxyethyl)trimethylammonium hydroxide aqueous solution and tetraethoxysilane after a few hours of stirring.
A Ring Expansion of Cyclic Ketones to α-Phenylthio Ketones via Lewis Acid Mediated Denitration
Authors: Kim Sunggak , Park Jung Ho 
Published: July 2006

Abstract
The adducts of cyclic ketones with the lithium derivative of (phenylthio)nitromethane are readily rearranged to the ring expanded α-phenylthio ketones via aluminum chloride mediated denitration.
Interception of 1,4-Radical Cations Derived from a Cage Ketone with Molecular Oxygen
Authors: Ikeda Hiroshi , Yamashita Yoshiro , Kabuto Chizuko , Miyashi Tsutomu 
Published: July 2006

Abstract
1,4-Radical cations, produced from a cage ketone containing a cyclobutane ring by a reaction with an aminium salt or photochemical reaction of an electron donor–acceptor complex with TCNE, were intercepted by molecular oxygen to give novel oxygenated products.
Crystal Structural Study on 2:1 Complexes of Equatorial Isomers of 3,5-Dimethylcyclohexanone and 3,5-Dimethylcyclohexanol with 1,1,6,6-Tetraphenylhexa-2,4-diyne-1,6-diol
Authors: Toda Fumio , Tanaka Koichi , Kai Akihiro , Tanaka Naoki , Tsugiyama Yuko , Hamada Kensaku , Fujiwara Takaji 
Published: July 2006

Abstract
Selective inclusion of the diequatorial isomer of 3,5-dimethylcyclohexanone and the triequatorial isomer of 3,5-dimethylcyclohexanol by 1,1,6,6-tetraphenylhexa-2,4-diyne-1,6-diol was observed. The crystal structure of these complexes was studied.
Molecular Structure of Tris(acetylacetonato)technetium(III)
Authors: Hashimoto Kazuyuki , Kabuto Chizuko , Omori Takashi , Yoshihara Kenji 
Published: July 2006

Abstract
The molecular structure of tris(acetylacetonato)technetium(III) was determined by means of the single crystal X-ray diffraction method. The complex has a typical octahedral coordination and the average ∠O–Tc–O is 90.2°. The average Tc–O distance is 2.025 Å.
A Regioselective Synthesis of 2,5-Di(methylsulfonyl)phenol
Authors: Ono Mitsunori , Nakamura Yoshisada , Sato Shingo , Itoh Isamu 
Published: July 2006

Abstract
A regioselective and a practical synthesis of 2,5-di(methylsufonyl)phenol is described on the basis of the reactivity analysis of 2,4-dichloro-methylsulfonylbenzene by use of the HSAB principle.
Synthesis of Callicarpone, a Fish-killing Diterpene
Authors: Matsumoto Takashi , Imai Sachihiko , Mimura Kazuyoshi , Aiba Keizo 
Published: July 2006

Abstract
Callicarpone, a fish-killing diterpene, has been synthesized from (+)-11-acetoxy-12-benzoyloxy-8,11,13-abietatrien-7-one via an intermediate, 11,11-ethylenedioxy-9βH-abieta-13(15)-en-12-one.
Synthesis and Reactivities of Novel η2-(C,O) Methylphenylketene Complex of Nickel
Authors: Sugai Ryuji , Miyashita Akira , Nohira Hiroyuki 
Published: July 2006

Abstract
Bis(triphenylphosphine)(methylphenylketene)nickel complex (1) was cleanly isolated from the reaction of bis(1,5-cyclooctadiene)nickel with methylphenylketene in the presence of triphenylphosphine. The spectroscopic analyses of 1 suggest to be η2-(C,O) ketene structure being close to oxanickelacyclopropane structure. Based on the chemical reactivities of 1, it is proposed that the ketene moiety of 1 switches its coordination mode from η2-(C,O) to η2-(C,C) type prior to undergoing further reactions.
Radical Induced Regio- and Stereoselective Ring-Opening of gem-Difluorocyclopropanes. Synthesis of the (E)-Difluoroallylic System
Authors: Morikawa Tsutomu , Uejima Masayuki , Kobayashi Yoshiro 
Published: July 2006

Abstract
The radical induced regioselective ring-opening of gem-difluorocyclopropanes via deoxygenation or deiodination gave (E)-difluoroallylic compounds stereoselectively.
A Facile Synthesis of Tetrakis(trimethylsilyl)butatriene Properties and Cycloadditions
Authors: Sakurai Hideki , Kudo Muneo , Sakamoto Kenkichi , Nakadaira Yasuhiro , Kira Mitsuo , Sekiguchi Akira 
Published: July 2006

Abstract
Tetrakis(trimethylsilyl)butatriene was readily prepared by flash vacuum pyrolysis of hexakis(trimethylsilyl)-2-butyne. The physical and chemical properties of the butatriene are described.
Novel Cation Transport Behavior of N-Octadecylmonoazacrown Ethers Cooperated with 2,6-Di(t-butyl)-4-nitrophenol
Authors: He Gong-Xin , Kurita Mayumi , Ishii Izumi , Wada Fumio , Matsuda Tsutomu 
Published: July 2006

Abstract
A new ‘double-cycle’ mechanism is presented for the N-octadecylmonoazacrown ether mediated cation transport to an acidic receiving phase cooperated with 2,6-di(t-butyl)-4-nitrophenol. The occurrence of the novel process may be attributable to the lower acidity of the phenol and aggregation behavior of the protonated monoazacrown ethers in the membrane phase.
(S)-β,ω-Dihydroxyalkyl Phenyl Sulfones. Synthesis by Bakers Yeast Reduction and Use as Precursors of Optically Active Lactones
Authors: Sato Toshio , Okumura Yoshiyuki , Itai Junichi , Fujisawa Tamotsu 
Published: July 2006

Abstract
The enantioselective reduction of ω-hydroxy-β-ketoalkyl phenyl sulfones with bakers’ yeast gives (S)-ω,β-dihydroxyalkyl phenyl sulfones, which are convenient precursors for optically active lactones as shown in the synthesis of (R)-4-hexanolide and (R)-umbelactone.
Diastereofacial Control in the Reaction of (R)-α-(p-Tolylsulfinyl)acetophenones with Several Organometallics
Authors: Fujisawa Tamotsu , Fujimura Atsushi , Ukaji Yutaka 
Published: July 2006

Abstract
The diastereofacial controlled addition of organometallics to optically active β-ketosulfoxide was achieved to furnish both diastereomers of β-hydroxy sulfoxide depending on the selection of organometallic reagents. Trichloromethyltitanium added to (R)-α-(p-tolylsulfinyl)acetophenones to give (RsRc)-β-hydroxy sulfoxides, while (RsSc)-β-hydroxy sulfoxides were obtained by utilizing trimethylaluminum. The utility of the present reaction was demonstrated in the synthesis of both enantiomers of sydowic acid.
Catalytic Enantioselective Conjugate Addition of Dialkylzincs to α,β-Unsaturated Ketones Using Nickel Bromide–N,N-Dibutylnorephedrine
Authors: Soai Kenso , Hayasaka Toraoiki , Ugajin Shoji , Yokoyama Shuji 
Published: July 2006

Abstract
Combination of nickel bromide and N,N-dibutylnorephedrine catalyzed the enantioselective conjugate addition of dialkylzincs to α, β-unsaturated ketones to afford optically active β-substituted ketones in up to ca. 50% enantiomeric excess.
Benzylic Cyanation via Oxidation and Simultaneous Nucleophilic Substitution
Authors: Lemaire Marc , Doussot Joël , Guy Alain 
Published: July 2006

Abstract
Use of dichlorodicyano benzoquinone and trimethylsilyl cyanide in suitable solvent permits the direct and ready transformation of benzylic C–H bonds to C–CN bonds with high yield and selectivity via oxidation and simultaneous nucleophilic substitution.
Photoinduced Preparation of Geometrical Isomers of [RuX(2mqn)2(NO)] (X = Cl or Br; 2mqn = 2-Methyl-8-quinolinolate Ion) from Two Kinds of the Cis Isomers
Authors: Kamata Hiromi , Konishi Yoshiaki , Ogino) Yoshimi Kamata (née , Miki Eiichi , Mizumachi Kunihiko , Ishimori Tatsujiro , Nagai Takashi , Tanaka Mikio 
Published: July 2006

Abstract
trans-[RuX(2mqn)2(NO)] (X = Cl or Br; 2mqn = 2-methyl-8-quinolinolate ion) was prepared photochemically from two kinds of the cis isomers, cis (O,O),cis (N,N)- and cis (O,O),trans (N,N)-[RuX(2mqn)2(NO)], in deoxygenated dichloromethane or dibromomethane. From the former cis isomer, the latter cis isomer was also prepared.
Isolation and Structure of Magnoloside A, a New Phenylpropanoid Glycoside from Magnolia obovata Thunb.
Authors: Hasegawa Takashi , Fukuyama Yoshiyasu , Yamada Toshihide , Nakagawa Kazuyuki 
Published: July 2006

Abstract
Magnoloside A, a novel phenylpropanoid glycoside has been isolated from the MeOH extract of Magnolia obovata and its structure has been elucidated as 3,4-dihydroxy-β-phenyl-ethyl-O-α-l-rhamnopyranosyl-(1→2)-3-O-caffeoyl-β-d-allopyranoside by means of spectroscopic and chemical evidences.
Novel 1,2-Phenyl Shift in Silver-assisted Reaction of Triphenylchloroallene with Aromatic Amines
Authors: Kitamura Tsugio , Taniguchi Hiroshi 
Published: July 2006

Abstract
Triphenylchloroallene reacted with aromatic amines in the presence of silver triflate to give 2, 3,4-triphenyl-1-aza-1,3-butadiene derivatives via a novel 1,2-phenyl shift.
Acid-Base Bifunctional Behavior of ZrC2 in Dual Adsorption of CO2 and NH3
Authors: Xu Bo-Qing , Yamaguchi Tsutomu , Tanabe Kozo 
Published: July 2006

Abstract
Temperature-programmed-desorption(TPD) profiles of NH3 and CO2 coadsorbed on ZrO2 revealed a progress of a new peak at around 553 K, which was not found when NH3 and CO2 were adsorbed individually. It was concluded that, though the most of the sites responsible to the adsorption of NH3 and CO2 were located independently, a part of them were located closely, where the pre-adsorbed NH3 molecule enhanced the adsorption of post-adsorbing CO2 molecules. This type of interaction was not found on either typical solid acid (SiO2–Al2O3 ; SA) or solid base (MgO).
Conductive Langmuir–Blodgett Films of Dialkyldimethylammonium–Ni(dmit)2 Complexes
Authors: Nakamura Takayoshi , Tanaka Hideaki , Matsumoto Mutsuyoshi , Tachibana Hiroaki , Manda Eiichiro , Kawabata Yasujiro 
Published: July 2006

Abstract
Conductive LB films of dialkyldimethylammonium–Ni(dmit)2complexes are described. The precursor 1:1 complexes were transferred onto substrates and converted into conductors by the bromine oxidation. The bulk conductivities of the films were 10−3 to 10−1 S/cm, depending on the length of alkyl chain. The spectral changes during the oxidation was also examined.
A Convenient Approach to the Synthesis of Deoxyribonucleoside-3′-hydrogen Phosphonates via Bis(1,1,1,3,3,3-hexafluoro-2-propyl) Phosphonate Intermediate
Authors: Takaku Hiroshi , Yamakage Shunitchy , Sakatsume Osamu , Ohtsuki Michiya 
Published: July 2006

Abstract
Transesterification of a new reagent, bis(1,1,1,3,3,3-hexafluoro-2-propyl)phosphonates was found to be very effective for the preparation of deoxyribonucleoside-3′-hydrogen phosphonates. The yields of deoxyribooligonucleotides by the H-phosphonate method on a solid support depended on the molar concentrations of the reacting species.
Synthesis of Two Isomeric [2.2](2,4)Pyridinophanes
Authors: Kawashima Toshihide , Fujimoto Yukari , Tohda Yasuo , Ariga Masahiro , Mori Yutaka , Misumi Soichi 
Published: July 2006

Abstract
Two isomeric [2.2] (2,4)pyridinophanes having Ci and C2 symmetry were synthesized by the thermal sulfur extrusion method from the corresponding disulfones and characterized by their 1H-NMR spectra.