bluuebunny/crossref_metadata_2025_split huggingface dataset:
Very Large Cooperative Phenomena on the Main Phase Transition of L-α-Dipalmitoylphosphatidic Acid During the Cooling Process
Authors: Sakaguchi Hiroshi 
Published: April 2006

Abstract
Gel/liquid crystal phase transition of concentrated water suspension of L-α-dipalmitoylphosphatidic acid was examined by using differential scanning calorimeter. During the cooling process, very sharp exothermic curve was obtained compared with endothermic one during the heating process. This sharp peak is a good evidence of high cooperativity among alkyl chains of lipid molecules during the transition from liquid crystalline phase to gel phase.
New Method to Determine the External Surface Area of ZSM-5 Zeolite
Authors: Sato Hiroshi , Sakamoto Akemi , Hirose Kenichi , Chikaishi Kazuhiro 
Published: April 2006

Abstract
The external surface area of ZSM-5 zeolite obtained by the benzene filled-pore method is smaller than that by the electron micrograph method when the crystalline diameter is smaller than 0.3μm. On the other hand, the surface area of ZSM-5 which contains template in its intra-crystalline micro-pores agrees well with the external surface area of calcined ZSM-5 obtained by the electron micrograph method in a whole range of crystalline diameters.
Hydrogenation of Carbon Monoxide over the Mixed Catalyst Composed of Co–Ni/MnO–ZrO2 and Zeolite Catalyst
Authors: Ishihara Tatsumi , Iwakuni Hideharu , Eguchi Koichi , Arai Hiromichi 
Published: April 2006

Abstract
The mechanical mixtures of Co–Ni/MnO–ZrO2 and zeolite were used as catalysts for the selective synthesis of gasoline by CO hydrogenation. Formation of branched-paraffins was promoted but that of higher hydrocarbons than carbon number of 10 was suppressed by combination with zeolite. The product distribution strongly depended on the type of zeolite catalyst. The combination of Co–Ni/MnO–ZrO2 with PtH-pentasil zeolite was very active for the formation of gasoline with high octane number.
Development of Extraction and Separation Monitoring in Situ with On-line SFE·SFC/FTIR System
Authors: Ikushima Yutaka , Saito Norio , Hatakeda Kiyotaka , Ito Shota , Goto Tomio 
Published: April 2006

Abstract
On-line SFE·SFC/FTIR with a high pressure flow cell withstanding pressures as high as 50 MPa was built up to make an in situ observation at supercritical state. The extraction and separation efficiency determined by this system was correlated with a parameter derived from solubility parameter concept.
Propylene Metathesis by Use of Novel TiCl4 or Ti(O-i-Pr)4-treated Low Valent Lanthanide Particles (Sm and Yb)
Authors: Imamura Hayao , Koda Kazuyoshi , Miura Hiroshi , Tsuchiya Susumu 
Published: April 2006

Abstract
TiCl4 or Ti(O-i-Pr))4-treated low valent, highly dispersed lanthanide particles (Sm and Yb) prepared by metal vapor deposition exhibited the activity for propylene metathesis at 333–473 K. Propylene was selectively converted to ethylene and but-2-ene.
Nonlinear Optical Properties and Structure of Biphenyls Containing Donor–Acceptor Chromophores and Bulky Substituents
Authors: Takagi Koichi , Ozaki Mitsuo , Nakatsu Kazumi , Matsuoka Masaru , Kitao Teijiro 
Published: April 2006

Abstract
Effects of various substituents including chromophores on the second harmonic generation(SHG) of biphenyls were examined. Among them, 4-hydroxy-3,5-di(t-butyl)-2′,4′-dinitrobiphenyl (1d) exhibited effective SHG response. The X-ray structure of 1d shows that the molecule is skewed around the 1–1′ bond and the molecular arrangement along the c-axis in the space group of Pca21 is favorable for SHG.
Interaction of Guanine Nucleotides with Ribonuclease F1′ as Studied by Absorption and Circular Dichroism Spectroscopies
Authors: Yoshida Hiroshi , Kanae Hidehiko 
Published: April 2006

Abstract
Difference spectra have been observed in both absorption and circular dichroism upon binding of various guanine nucleotides to ribonuclease F1′. The dissociation constants of the enzyrne–nucleotide complexes have been determined based on the difference absorption spectra. The results have been compared with those obtained with ribonuclease T1.
Electron Microscopic Studies of Crystalline and Amorphous Monolayers of Fatty Acids
Authors: Kajiyama Tisato , Tanimoto Youichi , Uchida Motoko , Oishi Yushi , Takei Ryutaro 
Published: April 2006

Abstract
A crystalline monolayer was observed at the subphase temperature Tsp below the melting point Tm of monolayers, while an amorphous monolayer was observed at Tsp above Tm of the monolayer, irrespective of the magnitude of surface pressure. A π-A isotherm depends on the phase of a monolayer; a plateau on the π-A isotherm (coexistence of solid and liquid phases) was observed for an amorphous monolayer and also, no plateau on the π-A isotherm (coexistence of solid and gas phases) for a crystalline monolayer. The phase transition from an amorphous to a crystalline state was not detected during compressing a monolayer.
Direct Preparation of Mesophase Pitch from Naphthalene by the Aid of HF/BF3
Authors: Mochida Isao , Shimizu Kiyoyuki , Korai Yozo , Sakai Yukio , Fujiyama Susumu 
Published: April 2006

Abstract
Direct preparation of mesophase pitch from naphthalene was studied using HF/BF3 in an autoclave under autogeneous pressure at 260 °C. A mesophase pitch of 100% anisotropy was produced catalytically first at a yield above 60%. The pitch carried 52% of benzene soluble fraction, exhibiting softening temperature of as low as 215 °C. The pitch consisted principally of naphthalene oligomers which carried a large content of naphthenic hydrogens with some alkyl and phenyl groups. The pitch was smoothly spun into thin fiber, which was rapidly stabilized for 30 min at 270 °C.
Gravimetric Characterization of Porous Ceramic Thin Films with Quartz Crystal Microbalance
Authors: Yoshikai Masaaki , Machida Masato , Eguchi Koichi , Arai Hiromichi 
Published: April 2006

Abstract
Direct measurement of N2 adsorption onto porous Al2O3 films was examined with a quartz crystal microbalance at 77 K. Nitrogen adsorption led to the change in resonant frequency (ΔF) of the Al2O3 coated quartz crystal. A cumulative plot of ΔF at the relative pressure corresponds to the N2 adsorption isotherm, from which pore size distribution and surface area of the Al2O3 thin films (ca. 0.1 mg) were successfully obtained.
Molecular and Crystal Structures of E- and Z-Isomers of 2,5-Dimethyl-3-furylethylidene(isopropylidene)-succinic Anhydride
Authors: Yoshioka Yasunori , Tanaka Takanori , Sawada Masami , Irie Masahiro 
Published: April 2006

Abstract
Molecular and crystal structures of E- and Z-isomers of 2,5-dimethyl-3-furylethylidene(isopropylidene)-succinic anhydride were examined. Both isomers have structures twisting between the furan ring and the succinic anhydride portion. The photocyclization reaction is initiated by a π–π* transition from each part of the molecule, not from a π-orbital delocalized over the molecule.
Decomposition of Chlorofluorocarbons by the Reaction with Water Vapor Catalyzed by Iron Oxide Supported on Activated Carbon
Authors: Okazaki Susumu , Kurosaki Akito 
Published: April 2006

Abstract
Chlorofluorocarbons such as CClF3 and CCl2FCClF2 were readily decomposed by the reaction with water vapor at temperatures higher than 450 °C in the presence of iron oxide supported on activated carbon.
Selective Sugar Binding with a Synthetic Polyhydroxy Macrocycle. A Remarkable Selectivity for Fructose over Glucose
Authors: Tanaka Yasutaka , Ubukata Yumiko , Aoyama Yasuhiro 
Published: April 2006

Abstract
D-Fructore, a ketohexose, is readily solubilized in CCl4 via complex formation with resorcinol-dodecanal cyclotetramer (1) , in marked contrast to D-glucose, a closely related aldohexose, which shows almost no affinity to 1. The affinity of fructose can be further enhanced by oligomeric modification of 1.
[1,2-Benzenediolato(2−)-O-O′]oxotitanium. A Chemoselective and Efficient Catalyst for Aldol-type Reaction of Ketene Silyl Acetals with Aldehydes
Authors: Hara Ryuichiro , Mukaiyama Teruaki 
Published: April 2006

Abstract
In the presence of a catalytic amount of [1,2-benzenediolato(2−)-O,O′]oxotitanium, ketene silyl acetals smoothly react with aldehydes to afford the corresponding β-hydroxy carboxylic esters in good yields under mild conditions. According to this procedure, an aldehyde group is selectively activated, while an acid labile acetal group remains intact.
New Reactions of a Thionitrosoarene
Authors: Takahashi Masaki , Okazaki Renji , Inamoto Naoki 
Published: April 2006

Abstract
A transient thionitrosoarene was trapped by an azide, diazo compound, oxygen, and thiirane to give a sulfur diimide, thiocarbonylimine, N-sulfinylaniline, and N-thiosulfinylaniline, respectively. In the reaction with oxygen N-sulfonylaniline was also formed and underwent a novel type of intramolecular cyclization.
Amphiphilic Compounds Having Pyrazine Nucleus. Formation of Monolayer and Langmuir–Blodgett Film
Authors: Takehara Kenji , Niino Hiroyuki , Oozono Yasuhiko , Isomura Kazuaki , Taniguchi Hiroshi 
Published: April 2006

Abstract
Among the all types of amphiphilic carboxylic acids, having phenylpyrazine as the chromophore and alkyl or alkoxy group as the hydrophobic part, 5-(4′-alkoxyphenyl)pyrazine-2-carboxylic acid formed the most stable and closely packed monolayer, which could be easily deposited to form a Y-type Langmuir–Blodgett film.
[4+2]-Type Cycloadditions of Tropone and Heptafulvene Derivatives with a Tautomeric Mixture of Cycloheptatrienylidene and Cycloheptatetraene
Authors: Saito Katsuhiro , Watanabe Tetsuya , Takahashi Kensuke 
Published: April 2006

Abstract
Reactions of tropone derivatives and 8,8-dicyanoheptafulvene with a tautomeric mixture of cycloheptatrienylidene and 1,2,4,6-cycloheptatetraene afforded [4+2]-type cycloadducts.
Metalloporphyrin-Catalyzed Reduction of Dioxygen by Ferrocene Derivatives
Authors: Fukuzumi Shunichi , Mochizuki Seiji , Tanaka Toshio 
Published: April 2006

Abstract
Metalloporphyrin-catalyzed reduction of dioxygen by ferrocene derivatives occurs efficiently via outer-sphere electron transfer from ferrocene derivatives to metalloporphyrins (MTPP+), followed by acid-catalyzed reduction of dioxygen by MTPP in the presence of perchloric acid in acetonitrile.
Acid-Catalyzed Reduction of Ketones by an NADH Model Compound and the Relation with Acid-Catalyzed Photoinduced Electron-Transfer Reactions
Authors: Fukuzumi Shunichi , Chiba Makoto , Tanaka Toshio 
Published: April 2006

Abstract
Various ketones are readily reduced by an acid-stable NADH model compound, 10-methylacridan (AcrH2), in the presence of perchloric acid in acetonitrile. Rates of the acid-catalyzed reduction of ketones by unprotonated AcrH2 are well correlated with rates of the acid-catalyzed photoinduced electron-transfer reactions from the excited state of [Ru(bpy)3]2+ to the ketones.
Formation of Radical Cations of Dihydropteridine and Dihydroflavin in the Photoreduction of Pteridine and Flavin Analogues by Benzyl Alcohol Derivatives
Authors: Fukuzumi Shunichi , Tanii Kumiko , Tanaka Toshio 
Published: April 2006

Abstract
Radical cations of dihydropteridine and dihydroflavin are formed in the photoreduction of pteridine and flavin analogues, respectively, by benzyl alcohol derivatives in the presence of perchloric acid in acetonitrile via photoinduced electron transfer from benzyl alcohol derivatives to the triplet excited states of protonated pteridine and flavin analogues. Their ESR spectra and the stabilities are compared.
Microbial Synthesis of Optically Pure α-Methoxy-α-trifluoromethyl-α-phenylacetic Acid
Authors: Ohta Hiromichi , Miyamae Yoshitaka , Kimura Yoichi 
Published: April 2006

Abstract
Preparatin of optically pure α-methoxy-α-trifluoromethyl-α-phenylacetic acid via microbial asymmetric hydrolysis of cyanohydrin acetate as the key step is described.
Cyclodextrin-Coupled Protoporphyrinatoiron Complex and Its Semi-Stable Oxygen Adduct Formation in an Aqueous Medium
Authors: Eshima Kiyoshi , Matsushita Yoh-ichi , Hasegawa Etsuo , Nishide Hiroyuki , Tsuchida Eishun 
Published: April 2006

Abstract
Protoporphinatoiron IX was coupled with α-cyclodextrin on its secondary hydroxy groups side with three urethane bonds. This cyclodextrin-coupled porphinatoiron shows reduced acute toxicity and forms an oxygen adduct in cooled aqueous medium.
Consistent Correlation between Absolute Configuration of α-Hydroxy Carboxylic Acids and Lanthanoid Induced Shift by an NMR Chiral Shift Reagent in Aqueous Solution
Authors: Kabuto Kuninobu , Sasaki Yoichi 
Published: April 2006

Abstract
The absolute configuration of various α-hydroxy acids, including those with polar substituent(s) on the side chain, have been consistently correlated with the relative position of α-proton or α-methyl signals due to their enantiomers in 1H NMR in the presence of the chiral shift reagent for aqueous solution, 1,2-propanediaminetetraacetatoeuropium(III).
Synthesis of Novel Tetraazapentalene Derivatives (10-S-3) with a Hypervalent Sulfur and Carbonyl Groups
Authors: Matsumura Noboru , Mori Osamu , Tomura Masaaki , Yoneda Shigeo 
Published: April 2006

Abstract
Tetraazapentalenes (R = CH3 and CH2=CHCH2) reacted with isocyanates to give new types of tetraazapentalenes, (2) and (3). The compounds, 2 and 3 were also obtained by the reaction of isocyanates with thiadiazolopyrimidines.
Synthesis of Superconducting Oxide by Mist Pyrolysis Method
Authors: Awano Masanobu , Takagi Hiroyoshi , Torii Yasuyoshi , Murayama Norimitsu , Sudo Eiichi 
Published: April 2006

Abstract
The powder of oxide superconductor was synthesized by the mist pyrolysis method. Ba2YCu3O7−y single phase particles were produced at reaction temperature of about 950 °C. The particle size changed with the concentration of starting solution and was about 0.1 μm diameter at the concentration of 0.00125 mol/l. They had homogeneity as the result of pyrolysis of droplets, including stoichiometric components.
Unusual Activation of Irreversibly Adsorbed CO on CeO2
Authors: Arai Toru , Maruya Ken-ich , Domen Kazunari , Onishi Takaharu 
Published: April 2006

Abstract
Irreversibly adsorbed CO at 273 K on partially reduced CeO2 was hydrogenated to form C1–C6+ hydrocarbons at 473 K. The amount of adsorbed CO and the rate of hydrocarbon formation increased with increasing the extent of reduction of CeO2·Ce3+ and/or oxygen vacancy on the surface is an active center for the adsorbed CO hydrogenation.
An Evidence for Remarkable Difference of the Electrophilicity between Two Carbonyl Groups in the Photoexcited 1,2-Naphthoquinone. Photocycloaddition Reaction of 1,2-Naphthoquinone with Olefins
Authors: Takuwa Akio 
Published: April 2006

Abstract
The [4+2]photocycloaddition reactions between 1,2-naphthoquinone and olefins have been investigated. From the results of the stereochemistry and the regiochemistry of the adducts, it is concluded that the carbonyl oxygen atom at the position 2 in the photoexcited triplet state of 1,2-naphthoquinone attacks selectively one of the olefinic carbons.
Photocross-linking and the Cleavage of DNA by Iron Complex-substituted Psoralen
Authors: Nakamura Yushin 
Published: April 2006

Abstract
The iron complex-substituted psoralen (1) having a moiety capable of photochemically cross-linking to DNA and a DNA cleaving moiety was synthesized. The photoreaction of which is noniron complex of 1, with Col E1 plasmid DNA gave the covalently interstrand cross-linked DNA which was cleaved in the presence of FeSO4 and dithiothreitol under air.
Novel Phenolics from Phytopathogenic Fungus Helicobasidium mompa
Authors: Kajimoto Tetsuya , Yamashita Masami , Imamura Yohko , Takahashi Kokichi , Nohara Toshihiro , Shibata Motoo 
Published: April 2006

Abstract
Novel phenolics HM-1(3), HM-2(5), HM-3(6), and HM-4(7) were obtained from phytopathogenic fungus Helicobasidium mompa which causes violet root rot against mulberry and several kinds of fruit trees. Compounds 3 and 7 could be precursors of helicobasidin and deoxyhelicobasidin, which have already been isolated from the same oriqin, while 5 and 6 were unusual types of C15-compound.
Catalytic Activity of Mixed Metal Oxides for Selective Oxidation of Propane to Acrolein
Authors: Kim Young-Chul , Ueda Wataru , Moro-oka Yoshihiko 
Published: April 2006

Abstract
Various mixed metal oxide catalysts were tested for the oxidation of propane to acrolein. An Ag-doped bismuth vanadomolybdate catalyst was found to be most effective among the catalysts tested; the selectivity to acrolein reached to more than 60% at 13% conversion of propane.
Partial Oxidation of Ethane over Boron Oxide Added Catalysts
Authors: Murakami Yasushi , Otsuka Kiyoshi , Wada Yuji , Morikawa Akira 
Published: April 2006

Abstract
B2O3–Al2O3, B2O3–MgO, B2O3–La2O3, and B2O3–P2O5 are selective catalysts for the partial oxidation of ethane. Among these catalysts, B2O3(30wt%)-added Al2O3 showed the highest catalytic activity in the formations of acetaldehyde (yield 1.03%) and ethylene (14.6%). Acetaldehyde is formed not via ethylene but directly from ethane. The formations of ethylene and acetaldehyde occur on different active sites.
Active Species of CuY Zeolite Catalyst in CO Oxidation at Low Temperatures
Authors: Tanabe Shuji , Matsumoto Hiroshige 
Published: April 2006

Abstract
The formation and catalytic behavior of active species in CuY zeolite were investigated with aids of TPR and EXAFS measurements. The active species formed during a reduction–reoxidation treatment was directly and reversibly reduced to Cu metal clusters with CO, indicating that the CO oxidation on the zeolite proceeded via the redox mechanism of active CuO clusters.
Remarkable Activities of Ni–Cu/SiO2 Catalysts for the Decomposition of Methanol to Syngas
Authors: Tada Akio , Watarai Yutaka , Takahashi Katuhiro , Imizu Yuzo , Itoh Hidenobu 
Published: April 2006

Abstract
The activities and selectivities of Ni–Cu/SiO2 catalysts for the titled reaction were investigated. The binary metal catalysts exhibited much higher performances than Ni/SiO2 and Cu/SiO2. In particular, 100% conversion and 100% CO selectivity were obtained over Ni0.1Cu0.9/SiO2 at a reaction temperature as low as 280 °C during the process time of 96 h.
Crystal Structure of the Electrochemical Product of Potassium Dicyanophthalocyaninatocobalt(III). Novel Two-Dimensional Stacking Interaction of Phthalocyanine
Authors: Inabe Tamotsu , Maruyama Yusei 
Published: April 2006

Abstract
The crystal obtained by electrocrystallization of potassium dicyanophthalocyaninatocobalt (III), K[Co(Pc) (CN)2], in acetonitrile has been found to be a cation deficient salt, K[Co(Pc)(CN)2]2(CH3CN)5. The structural study has indicated that partly overlapped phthalocyanine rings form a two-dimensional sheet.
The Use of a Nicotinoyl Group as a Protective Group for Hydroxyl and Amino Functions
Authors: Ushida Satoshi 
Published: April 2006

Abstract
The effective use of a nicotinoyl group as an easily introducible and cleavable protective group for hydroxyl and amino groups is described. Deprotection by alkaline hydrolysis is performed after activation by quarternization of pyridine moiety with methyl iodide.
Remarkably Facile 1,3-Diol Fragmentation. Synthesis of a Seco-sesquiterpene of Tobacco
Authors: Kato Michiharu , Tooyama Youichi , Yoshikoshi Akira 
Published: April 2006

Abstract
A benzylic hydroxyl group activated by the 2,6-dimethoxy-4-methylphenyl group was proved to be a remarkably reactive nucleofuge in 1,3-diol fragmentation under mild conditions. 4-(2,2,6-Trimethyl-6-vinylcyclohexyl)-2-butanone, a seco-sesquiterpene, was synthesized by using a fragmentation product thereby obtained.
Preparation of Electroactive Poly(dihydroxyphenylene)
Authors: Yamamoto Kimihisa , Asada Toshio , Nishide Hiroyuki , Tsuchida Eishun 
Published: April 2006

Abstract
Hydroquinone is electro-oxidatively polymerized to poly(dihydroxyphenylene), which is a Nernstian-type electroactive polymer (E° = 0.7 V in acidic medium) and shows a redox reaction through two-electron transfer accompanied with 4 protons dissociation on Pt electrode.
A Novel Glycosylation Reaction of 2-Amino-2-deoxy-d-glucopyranose Using Dimethylphosphinothioate
Authors: Inazu Toshiyuki , Yamanoi Takashi 
Published: April 2006

Abstract
β-Glucosides were stereoselectively obtained in good yields from 3,4,6-tri-O-benzyl-2-benzyloxycarbonylamino-2-deoxy-α-d-glucopyranosyl dimethylphosphinothioate with several alcohols in the presence of iodine and a catalytic amount of trityl or perchlorate salts.
A New Approach in the Construction of the Pentacyclic Ring System of Neosurugatoxin
Authors: Okada Kunisuke , Mizuno Yasushi , Tanino Hideo , Kakoi Hisae , Inoue Shoji 
Published: April 2006

Abstract
Details on a second synthetic procedure of neosurugatoxin framework are described using a Diels–Alder adduct obtained from 6-bromo-3-ethoxycarbonylmethylene-2-oxoindoline and 1,3-pentadiene.
Kinetic Study on the γ-Radiolysis of 5-Fluorouracil Derivatives
Authors: Kuroda Tokuyuki , Hisamura Koji , Nakamizo Nobuhiro , Otsuji Yoshio 
Published: April 2006

Abstract
The reactivity of 5-fluoro-1-(2-phenylethenesulfonyl)uracil (1) and 5-fluoro-1-phenylthioureidouracil (2) in the γ-radiolysis of their aqueous solutions was studied by a competitive kinetic method using nitrobenzene and acetone as reference compounds. The rate constants for the reactions of 1 and 2 with eaq− were of the same order of magnitude as that for nitrobenzene. The efficiencies of the conversion of intermediates generated from 1 and 2 into 5-fluorouracil were also estimated.
Dinitrogen Species Adsorbed on ZrO2 Studied by Infrared Spectroscopy
Authors: Sakata Yoshihisa , Abe Hiroshi , Kondo Junko , Maruya Ken-ichi , Domen Kazunari , Onishi Takaharu 
Published: April 2006

Abstract
Infrared active dinitrogen band was observed at 2341 cm−1 on a ZrO2 surface at 300 K. These species disturb the dissociative adsorption of hydrogen on ZrO2.
Tris(4-t-butylphenylcarbamate)s of Cellulose and Amylose as Useful Chiral Stationary Phases for Chromatographic Optical Resolution
Authors: Okamoto Yoshio , Hatano Kazuhiro , Aburatani Ryo , Hatada Koichi 
Published: April 2006

Abstract
Cellulose tris(4-t-butylphenylcarbamate) and amylose tris(4-t-butylphenylcarbamate) were adsorbed on macroporous silica gel and used as chiral stationary phases for high-performance liquid chromatography to separate racemic compounds. The carbamates, particularly cellulose derivative, exhibited remarkable optical resolving power, and resolved racemic drugs such as chloroquine and nicardipine which were not resolved on other phenylcarbamate derivatives of cellulose and amylose.
Efficient Cleavages of Ribonucleoside 2′,3′-Cyclic Phosphates and Ribonucleotide Dimers Catalyzed by β-Cyclodextrin Attached with Diethylenetriamine-Zinc(II) Complex
Authors: Komiyama Makoto , Matsumoto Yoichi 
Published: April 2006

Abstract
The complex between a modified β-cyclodextrin, which is attached with a diethylenetriamine residue at the primary hydroxyl side, and zinc(II) ion effectively and homogeneously catalyzes the cleavages of the 2′,3′-cyclic monophosphates of ribonucleosides and the ribonucleotide dimers. The magnitude of the catalysis is highly dependent on the kind of the nucleic base in the substrates.
Vibrational Circular Dichroism of Metal Complexes Containing trans-1,2-Diaminocyclohexane
Authors: Morimoto Hideharu , Kinoshita Isamu , Mori Masayasu , Kyogoku Yoshimasa , Sugeta Hiromu 
Published: April 2006

Abstract
The vibrational circular dichroism of (1R,2R)-diaminocyclohexane complexes of Pd(II), Cu(II), Ni(II), and Co(III) in CD3CN are characterized by positive and negative bands for the antisymmetric and symmetric NH2 stretching vibrations, respectively. This feature is attributable to the λ conformation of the chelate ring.
Palladium-catalyzed Desulfonylative Carbonylation of Arylsulfonyl Chlorides in the Presence of Titanium Tetraalkoxides
Authors: Miura Masahiro , Itoh Kenji , Nomura Masakatsu 
Published: April 2006

Abstract
The carbonylation of arylsulfonyl chlorides with a catalytic amount of tetrakis(triphenylphosphine)palladium(0) in the presence of a titanium tetraalkoxide gives the corresponding esters along with diaryl disulfides.