bluuebunny/crossref_metadata_2025_split huggingface dataset:
Novel Formations of Unsymmetrical 1,2,5-Benzotrithiepins from Olefins and Benzopentathiepin in the Presence of Lewis Acid. Benzopentathiepin as a Novel 1,5-Dipole Synthon
Authors: Sato Ryu , Onodera Akira , Goto Takehiko , Saito Minoru 
Published: May 2006

Abstract
Some unsymmetrical 1,2,5-benzotrithiepins were synthesized in moderate to good yields by the novel reactions of various olefins with benzopentathiepin (BPT) in the presence of a Lewis acid, trifluoroborane etherate. In this reaction, BPT was found to serve as a 1,5-dipole synthon.
Characterization of a Perhydro-5,6-di(methylene)-2,4-dioxopyrimidine Intermediate and Its Cycloaddition Reactions Leading to Quinazoline Derivatives
Authors: Noguchi Michihiko , Doi Kenji , Kiriki Yasutoshi , Kajigaeshi Shoji 
Published: May 2006

Abstract
Perhydro-5,6-di(methylene)-2,4-dioxopyrimidine derivative, a useful intermediate for the synthesis of some fused pyrimidines, was characterized as the [4+2] cycloadduct to N-methylmaleimide.
Novel Photocyclization between Quinone and 1,1-Diphenylcyclopropane
Authors: Maruyama Kazuhiro , Imahori Hiroshi , Ozawa Yoshiki 
Published: May 2006

Abstract
Photochemical reaction of 2,3-dichloro-1,4-naphthoquinone with 1,1-diphenylcyclopropane gave a spirofuran adduct as the sole photoproduct.
Cyclo-((S)-leucyl-(S)-histidyl). A Catalyst for Asymmetric Addition of Hydrogen Cyanide to Aldehydes
Authors: Mori Atsunori , Ikeda Yoshitaka , Kinoshita Koichi , Inoue Shohei 
Published: May 2006

Abstract
Asymmetric addition of hydrogen cyanide to various aldehydes in the presence of a catalytic amount of cyclo-((S)-leucyl-(S)-histidyl) affords the corresponding cyanohydrins in moderate to good optical yields. The reaction of benzaldehyde with hydrogen cyanide gives (S)-2-hydroxy-2-phenylacetonitrile (85%, 55% ee) whose stereochemistry is found to be opposite to our previous result using cyclo-((S)-phenylalanyl-(S)-histidyl).
Synthesis of Conformationally Restricted Dimeric Porphyrins Unsymmetrically Linked with Quinone
Authors: Osuka Atsuhiro , Ida Kazutaka , Nagata Toshi , Maruyama Kazuhiro , Yamazaki Iwao , Tamai Naoto , Nishimura Yoshinobu 
Published: May 2006

Abstract
Unsymmetrically quinone-substituted porphyrin dimers were synthesized. The fluorescence of the both porphyrins in these models was effectively quenched by the attached quinone.
1-O-Palmityl-D-glucuronate Endows Liposomes with Long Half-Life In Vivo
Authors: Namba Yukihiro , Sakakibara Toshiyuki , Masada Mikio , Ito Fumiaki , Oku Naoto 
Published: May 2006

Abstract
More liposomes containing 1-O-palmityl-D-glucuronic acid (PGA), a synthetic glycolipid, bound to macrophages than those containing phosphatidylglycerol did in vitro; however, PGA-liposomes circulated longer in vivo. PGA-liposomes did not aggregate in the presence of serum, but liposomes containing 1-O-palmityl-D-glucose or myristic acid aggregated rapidly, suggesting that both carbohydrate and carboxyl group of PGA are important for preventing liposomal aggregation in serum. This low agglutinative character may be one of the factors for long circulation of PGA-liposomes in vivo.
Laser-induced Highly Selective Synthesis of Ethylene Glycol from Methanol in the Presence of Hydrogen Peroxide
Authors: Shimizu Yuichi , Sugimoto Shun’ichi , Kawanishi Shunichi , Suzuki Nobutake 
Published: May 2006

Abstract
Ethylene glycol was highly selectively synthesized in high quantum yield by KrF-laser irradiation of the N2-saturated methanol containing hydrogen peroxide.
A New Method for the Synthesis of Protected Chiral 4-Hydroxy-2-cyclopentenone
Authors: Kitano Yasunori , Okamoto Sentaro , Sato Fumie 
Published: May 2006

Abstract
A new method for the synthesis of (R)-4-t-butyldimethylsiloxy-2-cyclopentenone (1, R = t-BuMe2-Si) has been developed which involves the effective preparation of the chiral (Z)-γ-iodo allylic alcohol and its conversion into 1 via cycliacylation reaction.
Photochromic Systems Utilizing the Reversible Photoredox Reactions between a Flavin Analogue and Benzenethiol Derivatives
Authors: Ishikawa Masashi , Fukuzumi Shunichi , Tanii Kumiko 
Published: May 2006

Abstract
Irradiation of a yellowish flavin analogue, riboflavin-2′,3′,4′,5′-tetra-acetate (Fl) in a polymer matrix film as well as in acetonitrile containing benzenethiol derivatives and a base with visible light (λ &gt; 360 nm) results in the decrease in absorbance due to Fl (λmax 442 nm). The color reverts to yellow by irradiation of the samples with ultraviolet light (λ &lt; 360 nm).
Nucleophilic Catalysis in the Hydrolysis of Methoxymethyl Benzenesulfenate, a Formaldehyde Acetal
Authors: Okuyama Tadashi , Fueno Takayuki 
Published: May 2006

Abstract
Acid-catalyzed hydrolysis of methoxymethyl benzenesulfenate is accelerated by nucleophiles (Cl−, Br−, I−, R2S, AcO− tertiary amines, and the substrate itself) through the attack at the proformyl carbon while water attacks at the sulfenyl sulfur.
Surface Property of the Langmuir–Blodgett Films of Polymers Modified with Perfluoroalkyl Groups by Ether Bonds
Authors: Tamura Masanori , Sekiya Akira 
Published: May 2006

Abstract
o- And p-1,1-dihydroperfluoroalkoxyphenyl groups were introduced to polyallylamine and Langmuir–Blodgett films of the polymers were successfully prepared. Characterization of the films indicated that the surface energy becomes lower by introduction of perfluoroalkyl chains by ether bonds instead of carbon–carbon bonds in the polymer, and very low γc value, less than 10 dyn cm−1, was achieved.
Laser Breakdown Spectrochemical Analysis of Microparticles in Liquids
Authors: Kitamori Takehiko , Matsui Tetsuya , Sakagami Masaharu , Sawada Tsuguo 
Published: May 2006

Abstract
A focused pulsed laser beam was irradiated on a CaCO3 microparticle in water, and a laser breakdown of single microparticle was induced. In the laser breakdown plasma emission spectrum, the emission lines of Ca I and Ca II were observed, while these lines did not appear for the Ca2+ aqueous solution. Hence this method is effective for analysis of microparticulate impurities in liquids.
Detection of Bimodal Inclusion Complexes of Heptakis(2,3,6-tri-O-methyl)-β-cyclodextrin with Naphthalene Derivatives Using Fluorescence Spectroscopy
Authors: Nakamura Asao , Saitoh Kunihiko , Toda Fujio 
Published: May 2006

Abstract
Simultaneous formation of two types of 1:1 complexes of 6-(4-methylphenylamino)-2-naphthalenesulfonate (6,2-TNS) with heptakis(2,3,6-tri-O-methyl)-β-cyclodextrin (TMCD) in solution was detected by fluorescence spectroscopy. Fluorescence titration supported the formation of 1:1 complexes. However, the observed fluorescence spectrum was resolved into two components by time-resolved spectroscopy.
Binding of a Fluorescent Oligonucleotide to a Circularized Intervening Sequence from Tetrahymena thermophila
Authors: Sugimoto Naoki , Sasaki Muneo , Kierzek Ryszard , Turner Douglas H 
Published: May 2006

Abstract
Binding behavior of a fluorescent oligonucleotide εACUCU to a circularized intervening sequence from Tetrahymena thermophila has been investigated by fluorescence titration. The binding constant was 9.5 × 106 mol−1 dm3 at 10 °C, roughly 3 orders of magnitude larger than expected for simple Watson–Crick base pairing.
HCl-Vapour-Etching for the Preparation of Monolayer V2O5/TiO2 Catalysts with High Exposure of Active Sites
Authors: Okada Koichi , Satsuma Atsushi , Hattori Tadashi , Murakami Yuichi 
Published: May 2006

Abstract
A novel method was proposed for the preparation of monolayer V2O5/TiO2 catalysts with very high exposure of active sites. In the method, extra vanadium species in highly loaded V2O5/TiO2 catalysts are selectively etched by HCl vapour.
Ion-Associate Solvent Extraction of Gallium(III) from Aqueous Sodium Hydroxide Solution
Authors: Obi Hideki , Segawa Tadashi , Yotsuyanagi Takao 
Published: May 2006

Abstract
Gallium(III) was extracted as Q3[GaL3] from 1–4 mol/dm3 NaOH solutions by the combined use of o-dihydroxy derivatives of benzene or naphthalene (H2L) and asymmetric quarternary ammonium ions (Q+) having at least one methyl-group. Hydrophobic large alkyl groups are an essential constituent of the extractant, while disposition of them is not necessarily restricted on the ligands (H2L), but on the counter ions (Q+). These findings provide a new basis for designing the reagent suitable for the ion-association extraction of metal ion from the strongly alkaline media.
Salt-Induced Photoamination of Arenes by Aliphatic Amines via Arene/p-Dicyanobenzene Exciplexes. A Mechanism for Salt Effects on Charge Separation of Exciplexes
Authors: Yasuda Masahide , Matsuzaki Yoriaki , Yamashita Toshiaki , Shima Kensuke 
Published: May 2006

Abstract
Salt Effects on arene/p-dicyanobenzene exciplexes which undergo photoamination of arenes with aliphatic amines in the presence of tetra-n-butylammonium tetrafluoroborate are investigated. From a kinetic analysis it is found that the photoamination proceeds via charge-separation of the exciplexes with the salt followed by nucleophilic addition of aliphatic amines.
The Effects of cis-Coordinating Phosphine of Chiral Bisphosphine–Rhodium Complexes on the Catalytic Activities in the Asymmetric Hydrogenation of Itaconic Acid
Authors: Takahashi Hisashi , Yamamoto Naoko , Takeda Hideo , Achiwa Kazuo 
Published: May 2006

Abstract
The effects of cis-coordinating phosphine of the rhodium complexes of BCPM ((2S,4S)-N-(t-butoxycarbonyl)-4-(dicyclohexylphosphino)-2-[(diphenylphosphino)methyl]pyrrolidine) analogues bearing electron donating or attracting groups on the catalytic activities in the asymmetric hydrogenation of itaconic acid are described.
Formation of C3 Hydrocarbons from Methane Catalyzed by Na+ Doped ZrO2
Authors: Matsuhashi Hiromi , Sakurai Kenji , Arata Kazushi 
Published: May 2006

Abstract
Sodium doped ZrO2 was studied as the methane activation catalyst and found to be highly active at low temperature giving C3 hydrocarbons as main products. Among the catalysts tested, 4.3 mol% Na+ doped ZrO2 showed the best conversion (18.2%) and selectivity (59.0%) for the formation of C2 and C3 hydrocarbons at 873 K; the yield of C3 was 7.5% with ratio 3.3 of propane/propene.
Friedel–Crafts Alkylation of Phenylsilanes with α-Chloro Sulfides
Authors: Ishibashi Hiroyuki , Sakashita Hiroshi , Morita Satoko , Mitani Sumiyo , Ikeda Masazumi 
Published: May 2006

Abstract
Treatment of trimethylphenylsilane with methyl chloro(methylthio)acetate in the presence of atannic chloride gave a mixture of the alkylated silylbenzenes, in which the meta- and para-substituted products predominated. The partial rate factors of this reaction suggest that the trimethylsilyl group slightly activates the meta- and para-positions of the silylbenzene.
1,4-Addition of Diisobutylaluminium Benzenetellurolate to α,β-Unsaturated Carbonyl Compounds and Aldol Reaction of Resulting Aluminium Enolates
Authors: Sasaki Kazuaki , Aso Yoshio , Otsubo Tetsuo , Ogura Fumio 
Published: May 2006

Abstract
Diisobutylaluminium benzenetellurolate, prepared from diphenyl ditelluride and diisobutylaluminium hydride, easily added to α,β-unsaturated carbonyl compounds in 1,4-fashion to give β-phenyltelluro carbonyl compounds. The intermediate aluminium enolates reacted with aldehydes to give aldol adducts. Subsequent telluroxide elimination resulted in the formation of α-substituted α,β-unsaturated carbonyl compounds.
Free-Radical Approach to C–C Bond Formation on a Trifluoromethyl-Substituted Carbon. Intramolecular Cyclization
Authors: Morikawa Tsutomu , Uejima Masayuki , Kobayashi Yoshiro 
Published: May 2006

Abstract
A trifluoromethyl-substituted carbon radical, generated by radical deoxygenation of α-trifluoromethyl alcohol, intramolecularly formed C–C bond to give a five- or six-membered cyclic compound.
Microbial Asymmetric Oxidation of 2-Alkoxyethylsulfides and a Facile Synthesis of Chiral Vinyl Sulfoxide
Authors: Ohta Hiromichi , Matsumoto Shinsuke , Okamoto Yasushi , Sugai Takeshi 
Published: May 2006

Abstract
2-Alkoxyethyl phenyl sulfides were oxidized by incubation with Rhodococcus equi IFO 3730 to afford chiral sulfoxides of high enantio excess. Phenyl vinyl sulfoxide and 2-hydroxyethyl phenyl sulfoxide were obtained from microbial oxidation products without any loss of their optical purities.
Uphill and Selective Transport of Thiocyanate Ion through a Bulk Liquid Membrane Containing Ferric Tetraphenylporphyrin Complex as a Mobile Carrier
Authors: Kokufuta Etsuo , Sumi Katsuhiro , Wu Wen-Chin 
Published: May 2006

Abstract
Ferric complex of tetraphenylporphyrin is useful as a carrier for preparing a bulk liquid membrane system in which SCN− ion is selectively transported against its concentration gradient by coupling with the flow of OH− ion coming from the opposite direction.
The Formation of an Alternating Zigzag and Linear Chain Structure with Topochemical Induction into the Racemate Crystal
Authors: Hasegawa Masaki , Kunita Akira , Chung Chanmoon , Hayashi Keiichi , Sato Sadao 
Published: May 2006

Abstract
Methyl and ethyl α-cyano-4-[2-(2-pyridyl)ethenyl]cinnamate crystals were highly photoreactive and formed the cycloadduct having an alternating zigzag and linear chain structures accompanied with topochemical induction of the two chiralities alternatively in the chain from the β-type achiral crystal of prochiral molecules.
On the Symmetry of SbIIIBr63− and SbVBr6− Ions in the (NH4)4SbIIISbVBr12 Crystal. A Study of 81Br NQR Zeeman Effect
Authors: Terao Hiromitsu , Okuda Tsutomu 
Published: May 2006

Abstract
The single-crystal Zeeman effect was investigated for the 81Br NQR lines in the mixed-valence compound (NH4)4SbIIISbvBr12 at room temperature. Comparing with the results of X-ray analysis, it was concluded that the SbIIIBr63− ions possess D2d symmetry and the SbvBr6− ions possess D4h (nearly Oh) symmetry.
A New Generation of o-Quinone Methides from o-(1-(Alkylthio)alkyl)phenols under Mild Conditions
Authors: Inoue Tsutomu , Inoue Seiichi , Sato Kikumasa 
Published: May 2006

Abstract
o-(1-(Alkylthio)alkyl)phenols are converted into o-quinone methides in good yield by treatment with silver oxide under mild conditions. Since the methides tend to prefer (E) configuration, cis-4-alkyl-2-alkoxychromans are exclusively obtained as a result of endo [4+2] cycloaddition of the methides and vinyl ethers.
p-Anisyloxymethyl Group, a Novel Oxidatively Removable Acetal Type OH-Protecting Group
Authors: Masaki Yukio , Iwata Ikuhiro , Mukai Isao , Oda Hirohisa , Nagashima Hiromu 
Published: May 2006

Abstract
Protection of various types of alcohols with p-anisyloxymethyl (p-AOM) chloride gave the corresponding p-AOM ethers which were deprotected with ceric ammonium nitrate efficiently. Chemoselective removal either of p-AOM group or of tetrahydropyranyl group is also reported.
Reversible Binding of Acetylene to Cationic Cobalt(III) Octaethylporphyrin
Authors: Setsune Jun-ichiro , Ikeda Mitsuhiro , Ishimaru Yoshihiro , Kitao Teijiro 
Published: May 2006

Abstract
Acetylene is reversibly inserted into a Co–N bond of bis(aquo)octaethylporphyrinatocobalt(III) perchlorate, (OEP)CoIII(H2O)2ClO4 (1), in CH2Cl2 solution, generating a d6 high spin (S = 2) complex. Addition of 2,6-lutidine to a mixture of 1 and acetylene gave a σ-vinylcobalt(III) complex, (OEP)CoIII–CH=CH–L+ClO4 [L = 2,6-lutidine], whereas pyridine replaced the acetylene ligand to afford (OEP)CoIII(PY)2ClO4. These results suggest the intermediacy of a CoIII acetylene π-complex.
Aromatization of Lower Paraffin with Hybrid Catalysts Containing ZSM-5
Authors: Fujimoto Kaoru , Nakamura Ikusei , Yokota Kohshiroh 
Published: May 2006

Abstract
It was pointed out that Ga promote the zeolite-promoted aromatization of lower paraffin by “Reverse Spillover Effect” of hydrogen. A new hybrid catalyst which was comparable to Ga-ZSM-5 for the title reaction was developed on this concept.
Synthesis of Statine and Its Analogues
Authors: Yanagisawa Hiroaki , Kanazaki Takuro , Nishi Takahide 
Published: May 2006

Abstract
Statine, (3S,4S)-4-amino-3-hydroxy-6-methylheptanoic acid, and its analogues were prepared from 5,6-anhydro-3-deoxy-1,2-O-isopropylidene-d-glucofuranose. The key step is the stereospecific reaction of the epoxy sugar with the Grignard reagent.
Hydroacylation of Simple Alkyl Vinyl Ketones Using Organotetracarbonylferrates
Authors: Yamashita Masakazu , Tashika Haruyoshi , Suemitsu Rikisaku 
Published: May 2006

Abstract
Alkyl vinyl ketones were hydroacylated by organotetracarbonylferrates to the corresponding 1,4-diketones in good yields in dipolar aprotic solvents such as dimethylacetamide. The addition of 18-Crown-6 made an increase of the yields.
Ozonolysis of Uracils in Water
Authors: Matsui Masaki , Nakazumi Hiroyuki , Kamiya Kazusaki , Yatome Chizuko , Shibata Katsuyoshi , Muramatsu Hiroshige 
Published: May 2006

Abstract
The ozonolysis of uracils unsubstituted at the 1-position gave new 1-acyl-5-hydroxyhydantoins and 5-hydroxyhydantoins in water, while that of 1-substituted uracils gave the corresponding 5-hydroxyhydantoins in low yields. The structure of 1-acetyl-5-hydroxy-5-methylhydantoin was determined by X-ray crystallography.
Cleavage of the Imino Bonds of Validoxylamine A Derivatives with N-Bromosuccinimide
Authors: Ogawa Seiichiro , Miyamoto Yasunobu , Nakajima Akihiro 
Published: May 2006

Abstract
Reaction of validoxylamine A derivatives with N-bromosuccinimide in aqueous N,N-dimethylformamide resulted in a cleavage of the imino bonds to give rise to synthetically useful protected derivatives of (+)-validamine and valienamine, and the cyclohexanone and -hexenone derivatives.
Preparation of Poly(2,5-thienylene-vinylene) Film by Hydrogen Transfer Reaction
Authors: Iwatsuki Shouji , Kubo Masataka , Yamashita Hideki 
Published: May 2006

Abstract
A tough film of fully conjugated poly(2,5-thienylene-vinylene) was successfully prepared by hydrogen transfer reaction in dioxane from poly(2,5-thienylene-ethylene) film obtained in the vapor deposition process with 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) as an oxidizing reagent.
Redox Properties of a Series of Iron(III) Trinuclear Carboxylates, [Fe3(μ3-O)(μ-RCO2)6(L)3]n+
Authors: Nakata Kou , Nagasawa Akira , Sasaki Yoichi , Ito Tasuku 
Published: May 2006

Abstract
Seventeen trinuclear iron(III) carboxylate complexes, [Fe3(μ3-O)(μ-RCO2)6(L)3]n+ (n = 1 or 7; RCO2 = simple carboxylate, pyridine carboxylic acid, or amino acid; L = H2O, pyridine, or imidazole) gave two reduction peaks in cyclic voltammogram in CH3CN. The first reversible redox potential (E1/2 = +0.23 to −0.60 V vs. Ag/Ag+ electrode) has a good linear correlation with pKa (1.5–4.8) of the bridging carboxylate ligand.
Remarkable Solvent Effects on the Photocatalytic Behavior of [fac-Re(bpy)(CO)3Br] (bpy = 2,2′-bipyridine). Selective Hydrogen Evolution in Ether Solvents in the Presence of Triethylamine
Authors: Pac Chyongjin , Ishii Koichiro , Yanagida Shozo 
Published: May 2006

Abstract
Irradiation of [fac-Re(bpy)(CO)3Br] and triethylamine in tetrahydrofuran at &gt; 400 nm results in the catalytic H2 evolution without the CO2 reduction to CO, while the CO2 reduction occurs with little H2 evolution in N,N-dimethylformamide and acetonitrile.
Dimensionality Examination of Cation Radical Salts Based on EDT-TTF (EDT-TTF = Ethylenedithiotetrathiafulvalene)
Authors: Kato Reizo , Kobayashi Hayao , Kobayashi Akiko 
Published: May 2006

Abstract
Crystal and electronic structures of organic conductors, (EDT-TTF)2X (EDT-TTF = ethylenedithiotetrathiafulvalene; X = PF6, AsF6, TaF6, BF4, ClO4, ReO4, Au(CN)2), have been studied. In all these compounds, the donor molecules exhibit face-to-face stacking. Simple tight-binding band calculations indicate quasi-one-dimensional electronic structures.
Aldol Addition Reaction of Chiral Acetylurea and a Convenient Synthesis of Optically Pure Methyl β-Alkyl-β-hydroxypropionate
Authors: Kishikawa Keiki , Yamamoto Makoto , Kohmoto Shigeo , Yamada Kazutoshi 
Published: May 2006

Abstract
The aldol addition reaction of chiral acetylurea with aldehydes diastereoselectively gives β-alkyl-β-hydroxypropionyl-ureas (3 and 4) and the methanolysis of the adducts 3 and 4, separated perfectly by conventional column chromatography on silica gel, gives the corresponding optically pure methyl β-alkyl-β-hydroxypropionates.
Triethylgallium Mediated Lactamization of α,ω-Amino Carboxylic Acids
Authors: Yamamoto Yoshinori , Furuta Toshiaki 
Published: May 2006

Abstract
The 5-, 6-, 7-, and 8-membered lactams are obtained from the corresponding α,ω-amino carboxylic acids in good to high yields by treatment with triethylgallium in toluene or benzene.
CO Hydrogenation on Supported Ultrafine Iron Particle Catalysts Prepared by Gas Evaporation Method
Authors: Chang Byong-tae , Kim Sung-jin , Hong Pang-bu 
Published: May 2006

Abstract
Ultrafine iron particles prepared by the gas evaporation method were found to be able to become high active and relatively stable catalysts for CO hydrogenation, simply by mixing them with supports, under the conditions of Fe contents less than 10 wt% and reaction temperatures below 250 °C. The sequence of catalytic activity, depending upon the kind of support, was as follows; TiO2(JRC-3,4,5 and Wake, M) &gt; HZSM-5(US) &gt; SiO2(M) &gt; Al2O3(M) &gt; NaZSM-5(M).
Aggregation States and Bistable Light Switching of (Liquid Crystalline Polymer)/(Low Molecular Weight Liquid Crystal) Mixture Systems
Authors: Kajiyama Tisato , Kikuchi Hirotsugu , Miyamoto Akira , Moritomi Satoru , Hwang Jenn Chiu 
Published: May 2006

Abstract
Binary mixtures composed of side chain type-liquid crystalline polymer (LCP) and low molecular weight liquid crystal (LMWLC) of which chemical structure is similar to the mesogenic side chain of LCP were prepared. Good miscibility between LCP and LMWLC was obtained in a mesophase state over a whole range of concentration. Response time of molecular reorientation by an imposed electric field remarkably decreased with an increase in the fraction of LMWLC. A new type of reversible and bistable electro-optical effect based on light scattering was proposed for the mixture system in a smectic state.
Reinvestigation of the Reaction of Samarium Metal with Mercury(II) Iodide
Authors: Deacon Glen B , Forsyth Craig M 
Published: May 2006

Abstract
Samarium(II) iodide is obtained from reaction of mercury(II) iodide with an excess of samarium metal in boiling tetrahydrofuran. The preparation involves formation and reduction of samarium(III) iodide and is affected by the quality of the samarium metal.
Evaluation of Defects of Polyimide Langmuir–Blodgett Films by Electrochemical Method
Authors: Nishikata Yasunari , Kakimoto Masa-aki , Morikawa Atsushi , Kobayashi Ichiro , Imai Yoshio , Hirata Yoshiki , Nishiyama Katsuhiko , Fujihira Masamichi 
Published: May 2006

Abstract
The defects of the polyimide LB films deposited on glassy carbon electrodes were examined by means of cyclic voltammetry of the redox couple of potassium ferri- and ferrocyanide in aqueous solution. The degree of defects of the polypyromellitimide LB films was apparently less than that of the cadmium arachidate LB film. The polyimide derived from aliphatic tetracarboxylic acid afforded the ten-layer LB films possessing no detectable defects.
Electrochemical Behavior of Polyimide Langmuir–Blodgett Films
Authors: Nishikata Yasunari , Kobayashi Ichiro , Kakimoto Masa-aki , Imai Yoshio , Hirata Yoshiki , Nishiyama Katsuhiko , Fujihira Masamichi 
Published: May 2006

Abstract
The redox reaction of the polyimide LB films themselves was examined by means of cyclic voltammetry. Both their cathodic and anodic current peaks decreased with potential cycling, and no peaks were observed after a few tens of sweeps, whereas the redox reaction was reversible in the case of polyimide cast films.
The Reaction of Cobalt(III) Porphyrins with α-Diazo-β-Dicarbonyl Compounds
Authors: Setsune Jun-ichiro , Iida Toshiya , Kitao Teijiro 
Published: May 2006

Abstract
Cobalt(III) porphyrins reacted with α-diazo-β-dicarbonyl compounds to give N,Co-methano bridged Co(III) porphyrins in good yields. The axial ligand and the peripheral substituents have great influence on the insertion of the carbenes and on the subsequent transformation to Co(III) N-alkylporphyrins with a linkage.