bluuebunny/crossref_metadata_2025_split huggingface dataset:
EFFICIENT CONVERSION OF CARBOXYLIC ACIDS INTO THIOL ESTERS
Authors: Kunieda Takehisa , Abe Yoshihiro , Hirobe Masaaki 
Published: July 2006

Abstract
A facile and direct preparation of thiol esters from carboxylic acids and thiols using diphenyl 2-oxo-3-oxazolinylphosphonate in the presence of triethylamine is described.
METAL-CATALYZED ORGANIC PHOTOREACTIONS. TITANIUM(IV) CHLORIDE-CATALYZED PHOTOREACTIONS OF ALCOHOLS AND FORMIC ESTERS
Authors: Sato Tadashi , Kaneko Hirokazu , Takahashi Toyohiko 
Published: July 2006

Abstract
The UV-irradiation of some alcohols in the presence of titanium(lV) chloride gave products with a C–C bond formation between alcohol molecules. The titanium(iv) chloride-catalyzed photoreaction of formic esters in alcohols induced the formylation of alcohol at the α-position.
CHEMILUMINESCENCE OF 9-METHYLENEACRIDANS IN MICELLAR AND MEMBRANOUS SYSTEMS
Authors: Shinkai Seiji , Ishikawa Yu-ichi , Manabe Osamu , Kunitake Toyoki 
Published: July 2006

Abstract
Chemiluminescence of a 1,2-dioxetane derived from 9-methylene-10-dodecylacridan was not detected in aqueous solution but was detected in micellar and membranous systems. The quantum yield and the rate of the chemiluminescence decay in the membranous (2C1615G and 2C1630G) system were affected by the chain melting transition. The results indicate that the chemiluminescence is sensitively affected by the microenvironmental effect.
THE REACTIONS OF BENZYLATED PYRROLE AND ADENINE RIBONUCLEOSIDES WITH GRIGNARD REAGENTS
Authors: Kawana Masajiro 
Published: July 2006

Abstract
The anomerization of benzylated pyrrole nucleosides were found to proceed by the use of t-BuMgBr. These nucleosides also reacted with MeMgI to produce open-chain products. On the other hand, the reaction of a perbenzylated adenosine with the Grignard reagent gave rise to regioselective 2′-O-debenzylation.
CRYSTALLIZATION OF ZEOLITE ZSM-5 FROM SINGLE CATION SYSTEM
Authors: Nakamoto Hiromi , Takahashi Hiroshi 
Published: July 2006

Abstract
Crystallization rates of ZSM-5 from the reaction mixture of TPA single cation system was measured in relation with the composition of the reactants. The crystallization rate strongly depended on concentration ratios of the components such as (TPA)2O/SiO2, SiO2/Al2O3 and H2O/SiO2 i.e., it increased along with increasing (TPA)2O/SiO2 and SiO2/Al2O3 and decreased with increasing H2O/SiO2. Na cation did not seem to play a major role in the crystallization from the Na-TPA cation system with SiO2/Al2O3 ratio above ca. 100.
TPD AND XPS STUDY ON THERMAL BEHAVIOR OF ABSORBED OXYGEN IN La1−xSrxCoO3
Authors: Yamazoe Noboru , Teraoka Yasutake , Seiyama Tetsuro 
Published: July 2006

Abstract
Two types of oxygen desorption from La1−xSrxCoO3 were revealed by the appearance of a broad desorption peak(α) below ca. 800°C and a sharp one(β) around 820°C. The binding energy of O ls level for absorbed oxygen was clearly different from that for lattice oxygen. Close examination shows that α is ascribable to the desorption of the absorbed oxygen while β may be the desorption of a part of lattice oxygen.
THE STRUCTURE OF SAFFLOMIN-A, A COMPONENT OF SAFFLOWER YELLOW
Authors: Onodera Jun-ichi , Obara Heitaro , Osone Masahide , Maruyama Yasunobu , Sato Shingo 
Published: July 2006

Abstract
The structure of safflomin-A, a yellow component of the flowers of Safflower (Carthamus tinctorius L.), was investigated.
A NOVEL METHOD FOR THE SYNTHESIS OF β-LACTAMS BY MEANS OF PHASE TRANSFER SYSTEM
Authors: Watanabe Yutaka , Mukaiyama Teruaki 
Published: July 2006

Abstract
The reaction of β-amino acids with methanesulfonyl chloride in a chloroform-water bilayer system in the presence of 15 mol% of tetrabutylammonium hydrogen sulfate gives the corresponding β-lactams in good yields.
OLEFIN SYNTHESIS BY REACTION OF ALKYL PHENYL TELLURIDES WITH CHLORAMINE-T
Authors: Otsubo Tetsuo , Ogura Fumio , Yamaguchi Hachiro , Higuchi Hiroyuki , Sakata Yoshiteru , Misumi Soichi 
Published: July 2006

Abstract
Alkyl phenyl tellurides reacted with chloramine-T in refluxing tetrahydrofuran to give olefins in high yields.
SYNTHETIC STUDIES TOWARD MAYTANSINOIDS PREPARATION OF THE OPTICALLY ACTIVE INTERMEDIATES FROM d-MANNOSE
Authors: Isobe Minoru , Ichikawa Yoshiyasu , Kitamura Masato , Goto Toshio 
Published: July 2006

Abstract
Optically active intermediates (15 and 23) for maytansine were synthesized from d-mannose via heteroconjugate addition of methyllithium as a crucial step.
TOTAL SYNTHESIS OF IONONES AND IRONES FROM 2-HYDROXYMEWL-4-PHENYLTHIO-1-BUTENE
Authors: Mandai Tadakatsu , Nishikawa Kengo , Yamaguchi Hirofumi , Kawada Mikio , Otera Junzo 
Published: July 2006

Abstract
A sequence of allylation, the Wacker reaction, and desulfonylation of homoallyl sulfones provided a new synthetic method for the α,β,γ,δ-unsaturated ketone system often encountered in natural products. This procedure was successfully applied to ionone and irone synthesis.
INTRAMOLECULAR Cα- AND Cγ-ALKYLATIONS OF TERTIARY ENAMINONES. FACILE ROUTES TO FUNCTIONALIZED INDOLE RING SYSTEMS
Authors: Iida Hideo , Yuasa Yoshifumi , Kibayashi Chihiro 
Published: July 2006

Abstract
Under the suitably controlled conditions, the tertiary enaminones undergo intramolecular ring formation at Cα and Cγ to give 1-(2-bromo-4,5-methylenedioxybenzyl) tetra (or hexa)hydro-4(or 6)-oxoindoles which can serve as potential precursors to lycoranes.
A ONE-POT AND SELECTIVE PREPARATION OF ALKYLATED 3-CYCLOHEXEN-1-ONE
Authors: Takabe Kunihiko , Ohkawa Suguru , Katagiri Takao 
Published: July 2006

Abstract
Treatment of lithiated nitrile with conjugated 1,3-dienes, such as isoprene, myrcene, and butadiene, followed by hydrolysis with 3N–HC1 gave selectively alkylated 3-cyclohexen-1-ones.
HYDROGEN PRESSURE DEPENDENCE OF THE ASYMMETRIC HYDROGENATION OF METHYL ACETOACETATE WITH MODIFIED NICKEL/SiO2 CATALYST
Authors: Nitta Yuriko , Sekine Fumimaro , Sasaki Jun , Imanaka Toshinobu , Teranishi Shiichiro 
Published: July 2006

Abstract
The optical yield of methyl 3-hydroxybutyrate in the asymmetric hydrogenation of methyl acetoacetate with tartaric acid-modified Ni/SiO2 catalyst decreased linearly with an increase in the hydrogen pressure up to 10 kg/cm2 in contrast to the data under higher hydrogen pressures.
CATALYTIC REACTIVITY OF THE LATTICE OXIDE IONS OF PRASEODYMIUM OXIDE
Authors: Takasu Yoshio , Matsui Masaki , Matsuda Yoshiharu 
Published: July 2006

Abstract
Lattice oxide ions of praseodymium oxide, Pr6O11, have been revealed to play an important role in the oxidation of carbon monoxide using 18O2 tracer and a TPD(temperature-programmed-desorption) techniques.
THE SENSITIZATION EFFECT IN THE LASER INDUCED INFRARED FLUORESCENCE SPECTROSCOPY BY ADDITION OF A SECOND COMPONENT
Authors: Higuchi Seiichiro , Kihara Noriaki , Waki Hiroshi , Tanaka Shigeyuki 
Published: July 2006

Abstract
The laser induced infrared fluorescence spectra of gaseous samples were measured, adding propylene as a second component. It was shown that the marked intensity enhancement was realized for the bands of the objective components in such mixed samples. This effect seemed to become larger with smaller concentrations of the components.
A CONVENIENT SYNTHESIS OF α-HYDROXYALLENES BY THE REACTION OF PROPARGYL IODIDES WITH ALDEHYDES IN THE PRESENCE OF STANNOUS HALIDE
Authors: Mukaiyama Teruaki , Harada Taira 
Published: July 2006

Abstract
In the presence of stannous halide, propargyl iodides react with aldehydes in an aprotic solvent to yield α-hydroxyallenes as major products, particularly in the cases of γ-substituted propargyl iodides, along with β-hydroxyacetylenes.
ROLE OF AgClO4 IN ACTIVATING SIGMA-ARYLNICKEL HALIDE COMPLEX FOR ETHYLENE DIMERIZATION
Authors: Ishimura Yoshimasa , Maruya Ken-ichi , Nakamura Yoshiyuki , Mizoroki Tsutomu , Ozaki Atsumu 
Published: July 2006

Abstract
C6F5Ni (PPh3)2Br gives a maximum activity for ethylene dimerization when mole ratio of added AgClO4 to the complex reaches two. 31P-NMR study of the reaction between AgClO4 and the complex reveals that the variation in dimerization activity runs parallel with concentration of C6F5Ni (PPh3) ClO4 formed by the reaction with AgClO4, thus disclosing a catalytically active species.
PHOTOREGULATED BINDING OF AMPHIPATHIC PROTEINS TO AZOAROMATIC POLYMER
Authors: Negishi Naoki , Ishihara Kazuhiko , Shinohara Isao , Okano Teruo , Kataoka Kazunori , Sakurai Yasuhisa , Akaike Toshihiro 
Published: July 2006

Abstract
Photoresponsive polymeric adsorbents were prepared by coating of insoluble support with polymeric azo dyes. Adsorption behaviors of amphipathic proteins to the adsorbent were studied. The adsorption behavior suggests that the hydrophobicity of these protein surface is different from each other.
STEREOSPECIFIC ALKYLATION OF THE OXIDIZED DIKETOPIPERAZINE DERIVATIVE, 3,6-DIMETHOXY-l,4-DIMETHYL-2,5-PIPERAZINEDIONE
Authors: Nakatsuka Shin-ichi , Sasaki Kenji , Yamaguchi Ken-ichiro , Goto Toshio 
Published: July 2006

Abstract
Kinetic monoalkylation of 3,6-dimethoxy-l,4-dimethyl-2,5-piperazinedione 2a via its anion gave a single stereoisomer (3) in which two methoxy groups are in the same side. Acid catalyzed equilibrium of 3 gave a mixture of 3 and its stereoisomer 4 in about 1:1 ratio. Acylation also gave a monoacylated product.
A CONVENIENT STEREOSPECIFIC SYNTHESIS OF α,β-UNSATURATED CARBOXYLIC ESTERS VIA THE PALLADIUM-CATALYZED CARBONYLATION OF 1-ALKENYLBORANES
Authors: Miyaura Norio , Suzuki Akira 
Published: July 2006

Abstract
1-Alkenyiboranes readily prepared by the hydroboration of alkynes react smoothly with carbon monoxide in the presence of palladium chloride and sodium acetate in methanol to give the corresponding α,β-unsaturated carboxylic esters with retention of configuration with respect to alkenylboranes in good yields.
IMMOBILIZATION OF STRONTIUM FROM AN AQUEOUS SOLUTION USING THE CRYSTALLINE HYDROUS TITANIUM DIOXIDE FIBERS
Authors: Sasaki Takayoshi , Komatsu Yu , Fujiki Yoshinori 
Published: July 2006

Abstract
Immobilization of strontium from an aqueous solution was studied by using the two kinds of crystalline hydrous titanium dioxide fibers(C-TiHO). Strontium ions were adsorbed on the C-TiHO from an alkaline solution and its final composition was SrTixO2x+1·nH2O(x=4–6). The Sr-adsorbed C-TiHO was decomposed into the mixture phase of strontium titanate (SrTiO3) and rutile (TiO2) by calcining at 1000 °C. The sintered mixture phase was proved to be suitable as an immobilizer of strontium from the results of leaching tests under atmospheric and hydrothermal conditions.
SYNTHESIS OF 2-NITROALKYL PHENYL SELENIDES AND THEIR CONVERSION TO NITROALKENES
Authors: Hayama Takashi , Tomoda Shuji , Takeuchi Yoshito , Nomura Yujiro 
Published: July 2006

Abstract
Treatment of alkenes with benzeneselenenyl bromide followed by addition of silver nitrite provided a mixture of 2-nitroalkyl and 2-hydroxyalkyl phenyl selenides. Oxidation of the former selenides with hydrogen peroxide gave nitroalkenes in 90–93% yields.
ALBAFURAN C, A NATURAL DIELS–ALDER ADDUCT OF A DEHYDROPRENYL-2-PHENYLBENZOFURAN WITH A CHALCONE FROM MULBERRY
Authors: Takasugi Mitsuo , Ishikawa Shin-ichi , Nagao Shigemitsu , Masamune Tadashi 
Published: July 2006

Abstract
The structure elucidation of a minor antifungal compound, isolated from “intact” epidermis of mulberry shoots and named albafuran C, is described.
GORGOST-5-ENE-3β,7α,11α,12β-TETRAOL 12-MONOACETATE, A NEW MARINE STEROL FROM THE GORGONIAN ISIS HIPPURIS
Authors: Tanaka Jun-ichi , Higa Tatsuo , Tachibana Kazuo , Iwashita Takashi 
Published: July 2006

Abstract
The title compound (1) has been isolated from the gorgonian Isis hippuris, and its structure was elucidated by spectral analysis. It is one of the most highly oxygenated marine sterols retaining the C5–C6 unsaturation.
DIRECT HYDROXYLATION OF AROMATIC COMPOUNDS IN AN RF PLASMA
Authors: Tezuka Meguru , Yajima Tatsuhiko , Tsuchiya Atsuhiko 
Published: July 2006

Abstract
The hydroxylation of aromatic compounds was carried out in the plasma generated by a radiofrequency discharge. Benzene and naphthalene yielded phenol and naphthols, respectively, as single volatile products. With respect to alkylbenzenes, the oxidation of the side-chains competed with the aromatic hydroxylation.
ACETYLATION BY KETENE OF ALCOHOLS SUPPORTED ON SOLID ADSORBENTS
Authors: Chihara Teiji , Takagi Yuzuru , Teratani Shousuke , Ogawa Haruo 
Published: July 2006

Abstract
Primary, secondary, and tertiary alcohols supported on solid adsorbents such as alumina, silica gel, celite, magnesium oxide, zinc oxide, titanium oxide, and charcoal were acetylated by ketene in good yields.
PALLADIUM(II)-CATALYZED CHLOROALLYLATION OF ALKYNYLSILANES. REGIO- AND STEREOSELECTIVE SYNTHESIS OF β-CHLOROALKENYLSILANES
Authors: Yamaguchl Ryohei , Kawasaki Hiroshi , Yoshitome Toshihide , Kawanisi Mituyosi 
Published: July 2006

Abstract
Reactions of alkynyltrimethylsilanes with allylic chlorides in the presence of a catalytic amount of PdCl2(PhCN)2 give regio-and stereoselectively 4-trimethylsilyl-5-chloro-1,4(E)-dienes in good yields.
TOTAL SYNTHESIS OF BASTADIN-6, A BROMINATED TYROSINE-DERIVED METABOLITE FROM THE SPONGE IANTHELLA BASTA
Authors: Nishiyama Shigeru , Suzuki Tomoko , Yamamura Shosuke 
Published: July 2006

Abstract
Bastadin-6, a 28-membered ring lactam, was synthesized from the known bis-p-methoxybenzyl bastadin-2 in 6 steps.
LACTONIZATION OF γ-HALO ESTERS WITH SILICA GEL CATALYST
Authors: Tsuboi Sadao , Fujita Hiroshi , Muranaka Koichi , Seko Katsuhiko , Takeda Akira 
Published: July 2006

Abstract
A facile synthesis of γ-butyrolactones by the lactonization of γ-halo esters with silica gel catalyst and its application to the stereoselective synthesis of (±)-canadensolide are described.
THE SYNTHESIS OF 5H-CYCLOHEPT[a]AZULEN-5-ONE AND ITS NOVEL REACTION WITH A SULFUR YLIDE: THE FORMATION OF A NEW HETEROCYCLIC SYSTEM
Authors: Yasunami Masafumi , Takagi Atsushi , Takase Kahei 
Published: July 2006

Abstract
5H-Cyclohept[a]azulen-5-one and its 11-methoxycarbonyl derivative were synthesized. The latter reacted in a novel manner with a sulfur ylide to give a new heterocyclic compound having 5-oxa-5H-dicyclohepta[cd,hi] indene skeleton.
PHOTOREACTIONS OF 8-METHYLENE- AND 8-DICYAN0METHYLENE-TRICYCL0[3.2.2.02,4]NON-6-ENE
Authors: Kumagai Tsutomu , Ichikawa Motomu , Mukai Toshio 
Published: July 2006

Abstract
8-Methylenetricyclo[3.2.2.02,4]non-6-ene (4) gave 8-methylenetetracyclo[4.3.0.02,4.05,7]nonane (6) on photolysis, whereas the dicyano-derivative (5) afforded two different-types of products, 8-dicyanomethylenetricyclo[3.3.1.02,4]non-6-ene (9) and 9,9-dicycano-8-methylenetricyclo[3.2.2.02,4]non-6-ene (10).
THE ISOLATION OF TWO SIMPLE γ-LACTONIC CEMBRANOLIDES FROM THE SOFT CORAL SINULARIA MAYI
Authors: Uchio Yasuto , Eguchi Shizuko , Nakayama Mitsuru , Hase Tsunao 
Published: July 2006

Abstract
Two simple γ-lactonic cembranolides were isolated from the soft coral Sinularia mayi Lüttschw. and structurally elucidated on the basis of spectral and chemical evidence.
SYNTHESIS OF Dl-VALIDOXYLAMINE B
Authors: Ogawa Seiichiro , Toyokuni Tatsushi , Iwasawa Yoshikazu , Abe Yasuo , Suami Tetsuo 
Published: July 2006

Abstract
Dl-Validoxylamine B was first synthesized by the reaction of Dl-4,7:5,6-Dl-O-isopropylidene-(1,4,6/5)-4,5,6-trihydroxy-3-hydroxymethyl-2-cyclohexenylamine with Dl-3,4-di-O-acetyl-1,2-anhydro-5,7-O-benzylidene-(1,2,4,6/3,5)-6-hydroxymethyl-1,2,3,4,5-cyclohexanepentol, followed by removal of the protecting groups.
A CONVENIENT SYNTHESIS OF BENZYLMETHYLCHLOROSILANES BY THE PALLADIUM-CATALYZED DECHLORINATIVE SILYLATION OF BENZYLIC CHLORIDES WITH METHYLCHLORODISILANES
Authors: Matsumoto Hideyuki , Kasahara Miyuki , Matsubara Ikuya , Takahashi Masatoshi , Nakano Taichi , Nagai Yoichiro 
Published: July 2006

Abstract
Benzylmethylchlorosilanes were prepared in high yields by the dechlorinative silylation of benzylic chlorides with methylchlorodisilanes MenSi2Cl6−n (n = 2,3, and 4) in the presence of a catalytic amount of Pd(PPh3)4.
CATALYTIC ACTIVITY OF BINUCLEAR MANGANESE(III) COMPLEXES FOR THE DECOMPOSITION OF HYDROGENPEROXIDE
Authors: Oishi Naoyasu , Nishida Yuzo , Kida Sigeo 
Published: July 2006

Abstract
Some alkoxo-bridged binuclear manganese(III) complexes showed high catalytic activity for the decomposition of hydrogenperoxide compared with mononuclear manganese(III) complexes.
HIGH-TEMPERATURE EVACUATED HYDROXYAPATITE AS A BASE CATALYST FOR THE ISOMERIZATION OF 1-BUTENE
Authors: Imizu Yuzo , Kadoya Masahiro , Abe Hiromichi , Itoh Hidenobu , Tada Akio 
Published: July 2006

Abstract
Hydroxyapatite calcined in air did not show any catalytic activity for the isomerization of 1-butene even at 573 K, but hydroxyapatite evacuated above 773 K catalyzed the isomerization at 273 K selectively to form cis-2-butene by an intramolecular hydrogen rearrangement.
SYNTHESES AND HOMOPOLYMERIZATION OF 7,8-DIALKOXYCARBONYL-7,8-DICYANOQUINODIMETHANES
Authors: Iwatsuki Shouji , Itoh Takahito , Nishihara Katsumi , Furuhashi Hidehiko 
Published: July 2006

Abstract
7,8-Dimethoxycarbonyl-7,8-dicyanoquinodimethane and 7,8-diethoxycarbonyl-7,8-dicyanoquinodimethane were prepared successfully as novel compounds. These two compounds homopolymerized readily under thermal, radical, and anionic conditions except for cationic one. Moreover, weak bases such as triethylamine, pyridine, and pyrrolidine were found to induce the homopolymerization.
ON THE STRUCTURE OF AILANTHONE, A BITTER PRINCIPLE FROM AILANTHUS ALTISSIMA
Authors: Naora Hirokazu , Furuno Tetsuo , Ishibashi Masami , Tsuyuki Takahiko , Takahashi Takeyoshi , Itai Akiko , Iitaka Yoichi , Polonsky Judith 
Published: July 2006

Abstract
The structure of ailanthone has been revised and shown to be 11β,20-expoxy-1β, 11α, 12α-trihydroxypicrasa-3,13(21-diene-2,16-dione by X-ray diffraction analysis.
METAL-NITROXYL SPIN EXCHANGE INTERACTION OBSERVED FOR THE IMINOXYL LABELED Co(II)-TETRAPHENYLPORPHYRIN
Authors: Ogiyama Shinji , Okada Keizo , Tajima Kunihiko , Sasaki Hidetoshi , Mukai Kazuo , Ishizu Kazuhiko 
Published: July 2006

Abstract
A typical AB type featured to spin–spin exchange interaction was observed for the ESR of the iminoxyl adduct of the low spin tetraphenylporphyrin-Co(II) complex. A scalar spin–spin exchange interaction (J) between the nitroxide and the metal site was successfully extimated from the line separation in the observed AB type doublet splitting.
PHOTO-INDUCED OXIDATIVE ADDITION OF BUTYL IODIDE TO A DIMERIC RHODIUM(I) COMPLEX. AN ELECTRON TRANSFER CHAIN MECHANISM
Authors: Fukuzumi Shunichi , Nishizawa Nobuaki , Tanaka Toshio 
Published: July 2006

Abstract
Irradiation of an acetonitrile solution of [Rh2(dicp)4]2+ (dicp = 1,3-diisocyanopropane) in the presence of butyl iodide by the visible light at 553 nm produces the adduct, [Rh2(dicp)4(n-Bu) (I)]2+, in a high quantum yield, e.g., Φ = 25.2. A photo-induced electron transfer chain mechanism is presented based on the effects of electron acceptors (p-dinitrobenzene, p-benzoquinone, and chloranil) and radical scavengers (oxygen and isopentyl nitrite) on the photochemical reaction.
CHIRALITY CONTROL BY KINETIC PROTONATION: ENANTIOSELECTIVE SYNTHESES OF (+)-VELBANAMINE, (−)-ISOVELBANAMINE, AND (+)-CLEAVAMINE
Authors: Takano Seiichi , Uchida Wataru , Hatakeyama Susumi , Ogasawara Kunio 
Published: July 2006

Abstract
Optimal conditions for inversion of the chirality at 2-position of the 2-alkyllactone(5) have been established. By utitizing the inversion method developed, three indole alkaloids, (+)-velbanamine(16), (−)-isovelbanamine(17), and (+)-cleavamine(18), have been synthesized from the chiral lactone(1) which has been previously used for the syntheses of the enantiomers of these alkaloids.
REGENERATION OF VITAMIN E FROM α-CHROMANOXYL RADICAL BY GLUTATHIONE AND VITAMIN C
Authors: Niki Etsuo , Tsuchiya Jyunichi , Tanimura Ritsuko , Kamiya Yoshio 
Published: July 2006

Abstract
α-Chromanoxyl radical formed by the interaction of α-tocopherol (vitamin E) with alkoxyl radical or DPPH was found by electron spin resonance spectroscopy to react with glutathione and vitamin C to regenerate α-tocopherol.
PREPARATION OF SEVERAL NEW TRANSITION METAL HYDRIDO COMPLEXES OF A TYPE MH(Y)Ln (M = Ni, Pd, Pt; Y = IMIDO, ALKENYL CARBOXYLATO) AND ELIMINATION OF HY FROM THE COMPLEXES ON INTERACTION WITH π-ACIDS
Authors: Yamamoto Takakazu , Sano Kenji , Yamamoto Akio 
Published: July 2006

Abstract
MH(succinimido) (PCy3)2 (M = Ni, Pd) and trans-PtH(OCOR) (PCy3)2(R = –C(CH3)=CH2, –CH2CH=CH2) have been prepared by oxidative addition of succinimide or the corresponding acid to the zero-valent transition metal complexes. Treatment of the hydrido complexes with π-acids such as CO and maleic anhydride causes elimination of succinimide or RCOOH.
RAPID ELECTRONIC RELAXATION PHENOMENON IN THE TRANSITION BETWEEN 6A1 AND 2T2 STATES
Authors: Maeda Yonezo , Ohshio Hiroki , Takashima Yoshimasa 
Published: July 2006

Abstract
N,N′-Bis(1-methyl-3-oxobutylidene)ethylenediaminato-1,3-di-4-pyridylpropaneiron(III) tetraphenylborate was synthesized and the temperature dependences of the Mössbauer spectrum and magnetic susceptibility for the compound were measured. The fact that the electronic relaxation between 6A1 and 2T2 states is faster than the lifetime (0.86×10−7 s) of the nuclear excited state of an 57Fe Mössbauer atom was confirmed by means of Mössbauer spectroscopy.
5,6-DIHYDROPHENANTHRIDIN-5-YL AS AN ACTIVATABLE PROTECTING GROUP OF CARBOXYLIC ACID—A DIRECT PREPARATION OF AMIDES FROM 5-ACYL-5,6-DIHYDROPHENANTHRIDINE
Authors: Narasaka Koichi , Hirose Takuji , Uchimaru Tadafumi , Mukaiyama Teruaki 
Published: July 2006

Abstract
Various amides are directly prepared from the protected carboxylic acids, 5-acyl-5,6-dihydrophenanthridines, by the reaction with primary amines in the presence of cerie pyridinium chloride and cupric oxide.
CHEMICAL PROPERTIES OF PROTEINACEUS CELL WALL FROM AN ACIDO-THERMOPHILE, Sulfolobus acidocaldarius
Authors: Inatomi Ken-ichi , Ohba Masayuki , Oshima Tairo 
Published: July 2006

Abstract
Proteinaceus cell wall from an acido-thermophilic archaebacteria, Sulfolobus acidocaldarius, contains two glycoproteins of molecular weight 40 000 and 100 000 as major subunits. Glucose and mannose were major carbohydrate components. The cell wall proteins were rich in hydrophobic amino acid residues. In the electron microscopy, a hexagonal array was seen on the surface of the isolated cell wall as well as the intact cell.
A CONVENIENT SYNTHESIS OF (±)-RETRONECINE
Authors: Niwa Haruki , Kuroda Akio , Yamada Kiyoyuki 
Published: July 2006

Abstract
Retronecine (1), the necine base of physiologically active pyrrolizidine alkaloids was synthesized in racemic form from ethyl 2,3,5,6-tetrahydro-1H-pyrrolizine-7-carboxylate (2) in five steps.
TIME-RESOLVED ABSORPTION SPECTROSCOPIC DETECTION OF 10,10-DIMETHYL-10-SILAANTHRACEN-9(10H)-ONE OXIDE
Authors: Sugawara Tadashi , Iwamura Hiizu , Hayashi Hisaharu , Sekiguchi Akira , Ando Wataru , Liu Michael T H 
Published: July 2006

Abstract
Laser-photolysis studies have been carried out on a solution of 9-diazo-10,10-dimethyl-10-sila-9(10H)-anthracene in cyclohexane. In aerated solutions, the triplet 10,10-dimethyl-10-silaanthracen-9(10H)-ylidene was quenched with oxygen (kq=2×109 M−1s−1) to give a characteristic absorption (λmax at 425 nm) due to the corresponding carbonyl oxide.
PHOTOINDUCED ION PERMEATION THROUGH TERNARY COMPOSITE MEMBRANE COMPOSED OF POLYMER/LIQUID CRYSTAL/AZOBENZENE-BRIDGED CROWN ETHER
Authors: Kumano Atsushi , Niwa Osamu , Kajiyama Tisato , Takayanagi Motowo , Kano Koji , Shinkai Seiji 
Published: July 2006

Abstract
Azobenzene-bridged crown ether(AZO-CR) in the ternary composite membrane exhibits trans–cis photoisomerization by irradiation of ultraviolet and visible lights. The K+ ion permeation through the ternary composite membrane is facilitated by photoirradiation. The facilitated transport of K+ ion is in strong relation to an altered affinity of AZO-CR for K+ ion due to the trans–cis configurational change of AZO-CR induced by photoirradiation. The cation permeation is remarkably influenced by the magnitude of solubility of counter-anion to the composite membrane.