bluuebunny/crossref_metadata_2025_split huggingface dataset:
Synthesis of DNA-Carbohydrate Conjugate via Diazocoupling: A New Class of Modified DNA with Enhanced Stability and Lectin-Recognition Ability
Authors: Matsuura Kazunori , Akasaka Tsukasa , Hibino Miki , Kobayashi Kazukiyo 
Published: May 2003

Abstract
Salmon testes DNA was treated with a diazonium salt connected to N-β-lactoside via a spacer chain to yield a diazo coupling product with a degree of substitution of 0.14. The DNA-lactose conjugate kept a typical B-type conformation similar to native DNA, and showed higher melting temperature and stronger nuclease resistance than native DNA. The conjugate was found to acquire a strong binding affinity to galactose-specific lectin RCA120.
Synthesis and Spectroscopic Characterization of Heteroleptic Europium(III) Double-deckers Containing 2,3-Naphthalocyaninato and Tetra(4-pyridyl)porphyrinato Ligands
Authors: Jiang Jianzhuang , Du Daming , Choi Michael T M , Xie Jinglei , Ng Dennis K P 
Published: May 2003

Abstract
The first heteroleptic 2,3-naphthalocyaninato and porphyrinato double-decker complexes, namely Eu(Nc)(TPyP) (1) and Eu[Nc’(SC12H25)8](TPyP) (2), were prepared by the base-promoted cyclization of 2,3-dicyanonaphthalenes using Eu(TPyP)(acac) as the template, and were spectroscopically characterized.
Supramolecular Electro- and Proto-Photoswitch
Authors: Otsuki Joe , Harada Kenkichi , Araki Koji 
Published: May 2003

Abstract
The fluorescence from a zinc-tetraphenylporphyrin–4-(phenylazo)pyridine supermolecule is switched on/off responding to external redox or (de)protonation stimuli, exemplifying a non-covalent approach to construct supramolecular photoswitches.
Sonochemical Preparation of Size-Controlled Palladium Nanoparticles on Alumina Surface
Authors: Okitsu Kenji , Nagaoka Shinya , Tanabe Shuji , Matsumoto Hiroshige , Mizukoshi Yoshiteru , Nagata Yoshio 
Published: May 2003

Abstract
A new method for the preparation of Pd nanoparticles immobilized on alumina at room temperature by ultrasonic irradiation of an aqueous solution of tetrachloropalladate(II) is reported. The size of Pd particles can be controlled by changing the type of alcohol and the amount of coexisting alumina.
Intercalation of Aliphatic Carboxylates in Hydrotalcite Interlayers: Selective Photochemical Hydrogen Abstraction by Benzophenonecarboxylate
Authors: Takagi Katsuhiko , Saito Naoya , Shichi Tetsuya , Sawaki Yasuhiko 
Published: May 2003

Abstract
The photochemical hydrogen abstraction of p-benzoylbenzoate ions (BPC) from aliphatic carboxylate ions in LDH (hydrotalcite) interlayers yielded a series of their 1:1 adducts. The product distributions were rather selective as well as distinctive from those of sodium salts and methyl esters in homogeneous solutions without LDH. These results have been discussed on the basis of their mutual disposition on the layer surfaces of the LDH.
Selective Oxidative Decomposition of Ammonia in Water to Nitrogen Catalyzed by Platinum-supported Titania
Authors: Taguchi Junji , Nakato Teruyuki , Okuhara Toshio 
Published: May 2003

Abstract
Selective oxidative decomposition of NH3 (or NH4+) in water to N2 was achieved with 0.5 wt%Pt/TiO2 catalyst at 433 K under 8 atm of O2 without alkalization of the solution; NH3 of 1000 ppm was exclusively converted to N2 and undesirable products, NO2− and NO3− in the solution and N2O in the gas phase were little formed.
Syntheses and Structures of Zn Coordination Polymers with 4,4′-Bipyridine and 4,4′-Azopyridine. Effect of Counter Anions on the Network System
Authors: Kondo Mitsuru , Shimamura Mariko , Noro Shin-ichiro , Yoshitomi Tomomichi , Minakoshi Seika , Kitagawa Susumu 
Published: May 2003

Abstract
Three zinc(II) coordination polymers, [Zn(4,4′-bpy)(NCS)2]n(4,4′-bpy = 4,4′-bipyridine; 1), {[Zn(4,4′-bpy)(SO4)(H2O)3]·3H2O}n (2), and {[Zn2(azpy)2(SO4)2(H2O)3]·0.5(azpy)}n (azpy = 4,4′-azopyridine; 3) have been synthesized and structurally characterized. 1 and 2 show assembled structure of one-dimensional chains, while 3 has a three-dimensional structure with pillared-layer type network. The important effect of counter anions on the coordination network was studied.
Noncatalytic Cannizzaro-type Reaction of Formaldehyde in Hot Water
Authors: Tsujino Yasuo , Wakai Chihiro , Matubayashi Nobuyuki , Nakahara Masaru 
Published: May 2003

Abstract
In hot water heated up to 250 °C and 4 MPa, methanol and formic acid are produced from the Cannizzaro-type reaction of formaldehyde without a catalyst, although this disproportionation reaction is well-known to occur in the presence of a large amount of base catalysts in ambient conditions. Formic acid further undergoes the hydride transfer reaction with formaldehyde, and the final yield of methanol exceeds 50%.
Lanthanide Ion-Mediated Hydrolysis of DNA on Phosphate Bilayer Membrane
Authors: Kimizuka Nobuo , Watanabe Eiji , Kunitake Toyoki 
Published: May 2003

Abstract
Binding of Ce3+ ion onto phosphate bilayer membranes and hydrolysis of plasmid DNA are examined. DNA cleavage is significantly promoted only when a particular phosphate bilayer is used in the liquid crystalline state.
Superoxide Dismutase Mimetic Complex of Mn(II) / N,N-Bis(2-pyridylmethyl)-(S)-Histidine
Authors: Yamato Kazuhiro , Miyahara Ikuko , Ichimura Akio , Hirotsu Ken , Kojima Yoshitane , Sakurai Hiromu , Shiomi Daisuke , Sato Kazunobu , Takui Takeji 
Published: May 2003

Abstract
A novel dinuclear Mn(II) complex, [Mn(L)(H2O)]2(ClO4)2 (1) where L is N,N-bis(2-pyridylmethyl)-(S)-histidinate, was synthesized. X-ray structure analysis of 1 revealed that each Mn(II) ion is a doubly carboxylate-bridged sevencoordinate structure. Cyclic voltammmetry indicated that electrode reaction of 1 was dependent on pH. The reactivity toward superoxide was evaluated by in vitro xanthine-xanthine oxidase-cytochrome c assay. The IC50 value of 1 is equal to 0.29 μM (1 M = 1 mol dm−3), which is one of the highest values in Mn(II) SOD mimetic complexes.
Radical Cation of Dodecamethylcyclohexagermane Generated by Pulse Radiolysis
Authors: Mochida Kunio , Kuwano Naoko , Nagao Haruka , Seki Shuhei , Yoshida Yohichi , Tagawa Seiichi 
Published: May 2003

Abstract
The radical cation of dodecamethylcyclohexagermane, (Me2Ge)6, generated by pulse radiolysis technique showed two transient absorption bands at 310 and 410 nm. These transient peaks were quenched with triphenylamine as a radical cation scavenger.
Dispersion Control of Ni Particles in Porous Silica by Solution Exchange of Wet Silica Gel
Authors: Takahashi Ryoji , Sato Satoshi , Sodesawa Toshiaki , Kato Masayuki , Yoshii Takaaki 
Published: May 2003

Abstract
Particle size of NiO in silica with well defined mesoporous structure can be controlled from 3.5 to 10 nm regardless of NiO content up to 30 wt% by solution exchange of wet silica gel derived from sol-gel process. Ni surface area of samples reduced at 500 °C can be enlarged by decreasing the NiO particle size, resulting in 30 m2g−1 at 30 wt% loading. The catalysts showed superior activities for gas-phase hydrogenation of benzene.
Study of the DNA Interaction with Water-soluble Cationic Fullerene Derivatives
Authors: Takenaka Shigeori , Yamashita Kenichi , Takagi Makoto , Hatta Taizo , Tanaka Atsuo , Tsuge Otohiko 
Published: May 2003

Abstract
The cationic fullerene derivatives 1a–c are fairly well soluble in water and bind to calf thymus DNA due to the electrostatic interactions at the phosphate anion sites and the hydrophobic interactions in the grooves.
A Facile Procedure for the Conversion of Nitroolefins into Carbonyl Compounds Using Al-NiCl2·6H2O-THF System
Authors: Bezbarua Maitreyee S , Bez Ghanashyam , Barua Nabin C 
Published: May 2003

Abstract
It has been demonstrated that a variety of nitroolefins can be efficiently converted into the corresponding carbonyl compounds by the reaction with an Al-NiCl2·6H2O-THF system.
Wurtz-type Coupling Reaction of Pseudo-pentacoordinate Halodisilanes Using Magnesium: Enhanced Reactivity of the Silicon-Halogen Bond by Intramolecular Amine-coordination to Silicon
Authors: Tamao Kohei , Asahara Masahiro , Saeki Tomoyuki , Toshimitsu Akio 
Published: May 2003

Abstract
A 2,3-bis(pseudo-pentacoordinate) tetrasilane was obtained by the reductive dimerization of 1-[8-(dimethylamino)-1-naphthyl]-1-chlorodisilane using magnesium, and also from the analogous 1-fluorodisilane using a mixture of magnesium and magnesium bromide.
Self-Assembled Monolayers Derived from Calix[4]resorcinarenes Exhibiting Excellent Desorption-Resistance and Their Applicability to Surface Energy Photocontrol
Authors: Oh Sang-Keun , Nakagawa Masaru , Ichimura Kunihiro 
Published: May 2003

Abstract
Self-assembled monolayers exhibiting excellent desorption-resistance was readily available by the adsorption of crown conformers of O-carboxymethylated calix[4]resorcinarenes on aminated silica substrates through multi-point adsorption.
Field Screening Test for Iron Leached from Well Bore Rock Samples by Using Color Development of Iron(III)-Xylenol Orange System
Authors: Ishida Akihiko , Kaneko Emiko , Yotsuyanagi Takao 
Published: May 2003

Abstract
A field test for iron leached from rocks has been developed by using a purple blue iron(III)-Xylenol Orange (XO) complex formed at the iron(III) concentrations above the molar concentration of XO. The test is performed in an aqueous drop on a Tefron® plate. When the iron content exceeds a criterion, a distinct color change from yellow to purple blue appears in the drop containing a 10-mg rock sample, HCl, XO, and (NH4)2S2O8. This method was applied to the prediction of water quality in aquifers.
Origin of π-Facial Stereoselectivity in Nucleophilic Addition. Application of the Exterior Frontier Orbital Extension Model to Substituted Bicyclo[2.2.1]heptan-7-ones
Authors: Tomoda Shuji , Senju Takatoshi 
Published: May 2003

Abstract
The exterior frontier orbital extension model (EFOE model) has shown that π-facial stereoselection in nucleophilic additions of 2,3-endo,endo-disubstituted bicyclo[2.2.1]heptan-7-ones (1) is dictated by the three terms of the Salem-Klopman equation – steric effect, electrostatic interaction and orbital interaction.
Synthesis of 2′,5′-Dideoxy-5′-Substituted Pyrimidine Nucleosides via Intramolecular Glycosylation
Authors: Sugimura Hideyuki , Katoh Yoshiko 
Published: May 2003

Abstract
5′-Azido-5′-deoxy and 5′-arylthio-5′-deoxy pyrimidine nucleosides were synthesized employing intramolecular glycosylation, in which a reaction intermediate was treated in situ with an azide salt or thiol.
Three-dimensional Structure of J Aggregates of Pseudoisocyanine Chloride Dyes at a Mica/Solution Interface Revealed by AFM
Authors: Sugiyama Shoko , Yao Hiroshi , Matsuoka Osamu , Kawabata Ren , Kitamura Noboru , Yamamoto Sadaaki 
Published: May 2003

Abstract
By using tapping-mode atomic force microscopy (AFM), we revealed for the first time the structure of J aggregates of pseudoisocyanine chloride(PIC-Cl) dyes at a mica/solution interface in an aqueous PIC-Cl solution. The J aggregates were leaf-like islands in multilayers of PIC-Cl molecules. The minimal size of the aggregate necessary for the J band was also revealed. Dye molecules grow into the J aggregates at a mica/solution interface by a Volmer-Weber type growth process.
Facile Synthesis of a Phosphotriester Intermediates for Solution-Phase Preparation of Oligonucleotide Phosphorothioates
Authors: Miyashita Takanori , Mori Kenya , Shinozuka Kazuo 
Published: May 2003

Abstract
Fully protected 2′-deoxynucleoside phosphorothioate triester derivatives, which are key starting materials for the large-scale solution-phase preparation of phosphorothioate oligonucleotides, were easily synthesized by a new method starting from common, fully protected 2′-deoxynucleosides.
Cyclopropanation of Ketene Silyl Acetals with Allylic Acetates Using η3-Allylpalladium-Pyridinylimidazole Catalysts
Authors: Satake Akiharu , Koshino Hiroyuki , Nakata Tadashi 
Published: May 2003

Abstract
Highly selective cyclopropanation of ketene silyl acetals with allylic acetates was carried out in the presence of novel η3-allylpalladium-pyridinylimidazole complexes and sodium acetate in DMSO at room temperature. When cinnamyl acetate was used as an allylic acetate, phenylcyclopropane derivative was obtained stereoselectively in 83% yield.
Two New Sesterterpenes from the Marine Sponge, Coscinoderma mathewsi
Authors: Kimura Junji , Hyosu Mitsumasa 
Published: May 2003

Abstract
The sponge Coscinoderma mathewsi from Pohnpei, Micronesia contains two new sesterterpenes having a scalarane-type skeleton possessing cis B/C ring juncture. The structures of the new compounds were elucidated by interpretation of spectral data.
Diastereoselective Specificity for the Hydrolysis of Dipeptide Esters in Aqueous Media
Authors: Ueoka Ryuichi , Goto Kouichi , Tanoue Osamu , Miki Atsushi , Yoshimitsu Shinya , Imamura Chikara , Ihara Yasuji , Murakami Yukito 
Published: May 2003

Abstract
The diastereoselectivity for the hydrolysis of p-methoxycarbonylphenyl N-(benzyloxycarbonyl)-D(L)-phenylalanyl-L-leucinate in aqueous solution was inverted by changing concentrations of the substrates or the reaction temperature. The monomer-aggregate transition operated on the LL-substrate, which was suggested by the spectroscopic measurements, seems to be responsible for such behavior.
Direct Synthesis of Propionamide and Propiononitrile from Ethylene, Carbon Monoxide, and Ammonia Using Supported Ru and Rh Catalysts
Authors: Zhao Shu-Ping , Sassa Shu-Ichi , Inoue Hideaki , Yamazaki Masato , Mori Tohru , Kobayashi Masahiro , Morikawa Yutaka 
Published: May 2003

Abstract
Propionamide and propiononitrile were formed by passing the mixture of ethylene, carbon monoxide, and ammonia under atmospheric pressure over silica- or zeolite-supported Ru ammine complex catalyst. Rh ammine complex also promoted the reaction but the catalytic activity was low. It is inferred that propionamide is formed primarily and is dehydrated successively on the acidic site of the support.
Catalytic Hydrocarbon Oxygenation by a Dinuclear Ruthenium(II) Complex with Molecular Oxygen
Authors: Kojima Takahiko , Matsuda Yoshihisa 
Published: May 2003

Abstract
A bis-μ-chloro Ru(II) dimer with tris(2-pyridylmethyl)amine (TPA) exhibited catalytic oxygenation of alkenes and cooxygenation of alkanes in the presence of cyclohexene with molecular oxygen (1 atm) at room temperature without reducing reagents; reactions proceeded via a radical chain mechanism as a main pathway.
Methanol Formation from Dichloromethane under Hydrothermal Conditions
Authors: Yamasaki Yuki , Enomoto Heiji , Yamasaki Nakamichi , Nakahara Masaru 
Published: May 2003

Abstract
CH2Cl2 (1 mole) mixed with NaOH (2 moles) was treated under hydrothermal conditions at 250 °C. The chlorinated methane was completely hydrolyzed to form methanol and the formate by the Cannizzaro reaction. The reactant and products were analyzed by 1H-, 2H-, and 13C-NMR. Solvent isotope effect on the transformation was also investigated. The hazardous and environmentally troublesome organic solvent was safely converted into the useful compounds.
Transient Attenuated Total Internal Reflection Spectroscopy to Measure the Relaxation Kinetics of Triplet State of Tetra(N-methylpyridinium-4-yl)porphine at Liquid-Liquid Interface
Authors: Tsukahara Satoshi , Watarai Hitoshi 
Published: May 2003

Abstract
Tetra (N-methylpyridinium-4-yl)porphine (tmpyp4+) was adsorbed to the toluene/water interface with dodecylsulfate ions. Transient attenuated total internal reflection spectroscopy was developed to measure the relaxation kinetics of the triplet state of tmpyp4+ generated by laser irradiation at the interface. For both a probe white light and a pulsed 532 nm-laser light, the angle of incidence was set to 67° that was larger than the critical angle at the interface, 63°. It was observed that the triplet tmpyp4+ at the interface was quenched faster than in aqueous solutions.
Synthesis of Ti-containing Porous Silica with High Photocatalytic Activity
Authors: Kosuge Katsunori , Singh Puyam S 
Published: May 2003

Abstract
Ti-containing mesoporous silica with high photocatalytic activity has been synthesized by a simple reaction system at ambient temperature; one of these products shows photocatalytic activity in the decomposition of acetic acid as high as 39 times than that of one of most photocatalytic commercial anatase.
Optically Active Poly- and Oligo(biphenyl carbonate)s as Stable Helical Molecules
Authors: Murakawa Ken-ichi , Furusho Yoshio , Takata Toshikazu 
Published: May 2003

Abstract
Low molecular weight polycarbonate ((R)-2) derived from polycondensation of (R)-4,4′,6,6′-tetramethyl-2,2′-dihydroxybiphenyl ((R)-3) showed large Cotton effect at 210 nm compared with its unit model. CD spectra of model oligomers of (R)-2 (2-8mers) obtained by stepwise synthesis and their structure simulation suggested that (R)-2 and higher oligomers can hold a stable left-handed helix.
Oxidation of Alcohols to Carbonyl Compounds under Solvent-Free Conditions Using Permanganate Supported on Alumina
Authors: Hajipour Abdol Reza , Mallakpour Shadpour E , Imanzadeh Gholamhasan 
Published: May 2003

Abstract
A manupulatively simple and rapid method for oxidation of alcohols to the corresponding carbonyl compounds is described. The reaction is conduced under solventless ‘dry’ conditions using alumina-supported permanganate.
Polymerization of Glycidyl Phenyl Ether with a Thiophosphonic Acid Ester as a Novel Thermally Latent Initiator
Authors: Kim Moonsuk , Sanda Fumio , Endo Takeshi 
Published: May 2003

Abstract
S,S-Di-t-butyl phenylthiophosphonate (1) served as a novel thermally latent initiator in the polymerization of glycidyl phenyl ether (GPE) in the presence of ZnCl2.
Solid and Solution State Structures of a Reversible Molecular Oxygen-Carrying Molybdenum Porphyrin Dioxygen Complex
Authors: Fujihara Tetsuaki , Rees Nicholas H , Umakoshi Keisuke , Tachibana Junichi , Sasaki Yoichi , McFarlane William , Imamura Taira 
Published: May 2003

Abstract
The molecular structure of a reversible oxygen carrier, MoVIO(tmp)(O2) has been characterized by X-ray crystallography. Oxo and dioxygen ligands are actually coordinated with cis conformation, which leads to a saddle-like distortion of the porphyrin ring. The result of 2D ROESY shows the distortion of the porphyrin ring is retained in solution.
Radical Cyclization Reaction Using a Combination of Phosphinic Acid and a Base in Aqueous Ethanol
Authors: Yorimitsu Hideki , Shinokubo Hiroshi , Oshima Koichiro 
Published: May 2003

Abstract
Treatment of allylic ether of 2-iodophenol or 2-haloethanal allylic acetal with phosphinic acid, a base and a radical initiator (AIBN or triethylborane) in aqueous ethanol provided the corresponding radical cyclization product in excellent yield. An addition of a base is critical to employ phosphinic acid as a radical mediator.
An Affinity Capillary Electrophoresis for the Separation of Sequence Isomers of Oligonucleotide
Authors: Katayama Yoshiki , Arisawa Takumi , Ozaki Yoshihisa , Maeda Mizuo 
Published: May 2003

Abstract
An affinity capillary electrophoresis for gene mutation assay was developed using oligonucleotide-polyacrylamide conjugate as pseudo-immobilized affinity ligand. In the system, magnesium ion concentration was found to be a key factor to achieve efficient separation of sequential isomers of oligonucleotide with the same chain length.
Two Adsorption States of C2H4 at Saturation Coverage on Pd(110)-(2x1)-H
Authors: Ichihara Shigeru , Okuyama Hiroshi , Kato Hiroyuki , Kawai Maki , Domen Kazunari 
Published: May 2003

Abstract
The adsorption of C2H4 on Pd(110)-(2x1)-H at 160 K was studied by scanning tunneling microscopy and high-resolution electron energy loss spectroscopy. We found that two adsorbed species coexist at high coverage. The species were characterized by C-C stretching energies of 170 and 153 meV, which were identified as one-dimensional and c(2x2) domains, respectively. The latter species, which appeared only at high coverage, was bonded to the bare surface, which implied the possibility of H atom transition into the subsurface.
Stereoselective Glycosylation of Thioglycosides Promoted by Respective Combinations of N-Iodo- or N-Bromosuccinimide and Trityl Tetrakis(pentafluorophenyl)borate. Application to One-Pot Sequential Synthesis of Trisaccharide
Authors: Takeuchi Kazuya , Tamura Takayuki , Mukaiyama Teruaki 
Published: May 2003

Abstract
New highly effective promoter system for the glycosylation of thioglycoside, the combined use of stoichiometric amount of either N-iodosuccinimide or N-bromosuccinimide and a catalytic amount of TrB(C6F5)4, was developed and was successfully applied to the one-pot sequential synthesis of trisaccharides. In the first glycosylation step, 3,4,6-tri-O-benzyl-2-O-p-toluoyl-β-D-glucopyranosyl phenylcarbonate was treated with thioglycosides in the presence of a catalytic amount of TrB(C6F5)4 alone, and the following glycosylation with methyl α-D-glycosides was carried out by further addition of either N-iodosuccinimide or N-bromosuccinimide to the initially resulted reaction mixture to afford the corresponding trisaccharides in one-pot manner.
Tuning of Intramolecular π-π Overlap Mode of Tetrathiafulvalene Bisannulated Macrocycles in the Open-Shell Electronic State
Authors: Akutagawa Tomoyuki , Abe Yukako , Hasegawa Tatsuo , Nakamura Takayoshi , Inabe Tamotsu , Christensen Christian A , Becher Jan 
Published: May 2003

Abstract
Charge-transfer complexes of bis(methylthio)tetrathiafulvalene (DMT-TTF) bisannulated macrocycles with 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4-TCNQ) were prepared. The crystal structural analysis revealed an intramolecular dimer structure with the π-π overlap of DMT-TTF units. The magnitude of intramolecular π-π overlap depends on the ring size of macrocycles.
Hyperfine Splitting of 2,2,6,6-Tetramethylpiperidine-N-oxyl in Octyl β-d-Glucoside-Containing Large Unilamellar Vesicle Suspensions
Authors: Kashiwagi Hiroshi , Aizawa Kazutoshi , Ueno Masaharu 
Published: May 2003

Abstract
Hyperfine splitting patterns of the ESR spectra of 2,2,6,6-tetramethylpiperidine-N-oxyl (TEMPO) in octyl β-d-glucoside (OG)-containing egg yolk phosphatidylcholine (EPC) large unilamellar vesicle suspensions were mainly composed of TEMPO dissolved in water, in lamellar EPC, and in nonlamellar EPC. Their hyperfine splitting constants and half widths were available for monitoring the behavior of OG in the course of vesicle destruction.
Novel Application of a Solid Super Acid, Sulfated Zirconia, as a Catalyst for Koch Carbonylation Reaction
Authors: Mori Hajime , Wada Aya , Xu Qiang , Souma Yoshie 
Published: May 2003

Abstract
A solid superacid, sulfated zirconia, worked well in the Koch reaction. Under optimized conditions, tertiary alcohols were selectively transformed to the corresponding carboxylic acids (34-72%), while primary alcohols were transformed to the corresponding ethers (58-72%).
The Co2(CO)8-Catalyzed Hydrosilylation of Oxygen-Containing Olefins: Silylmetalation as a Key Step
Authors: Chatani Naoto , Kodama Tamotsu , Kajikawa Yasuteru , Murakami Hidetatsu , Kakiuchi Fumitoshi , Ikeda Shin-ichi , Murai Shinji 
Published: May 2003

Abstract
The hydrosilylation of oxygen-containing olefins in the presence of Co2(CO)8 was carried out. The Co2(CO)8-catalyzed hydrosilylation of allyl acetate with HSiEt2Me is consistent with proceeding via a silylmetalation mechanism rather than a classical hydrometalation (Chalk-Harrod mechanism).
Fluorescence Energy Transfer in Dendritic Poly(l-lysine)s Combining Thirty-two Free Base- and Zinc(II)-porphyrins in Scramble Fashion
Authors: Kato Tamaki , Uchiyama Motonori , Maruo Naoki , Arai Toru , Nishino Norikazu 
Published: May 2003

Abstract
Dendritic poly(l-lysine)s combining thirty-two free base- and Zn(II)-porphyrins in scramble fashion were successfully synthesized and exhibited highly efficient (85%) fluorescence energy transfer from Zn(II)-porphyrins to free base-porphyrins.