bluuebunny/crossref_metadata_2025_split huggingface dataset:
SYNTHESIS AND PHOTOCHEMICAL REACTIVITY OF O-ALKYLMALEIMIDE
Authors: Izawa Yasuji , Yokoi Kanemasa , Tomioka Hideo 
Published: July 2006

Abstract
Irradiation of O-alkylmaleimide, prepared by the reaction of silver maleimide with alkyl bromide, resulted in Norrish type II elimination presumably initiated by γ-hydrogen abstraction of excited carbon–nitrogen double bond.
THE STRUCTURE OF TRANS-DICHLORO(1,4,8,11-TETRAAZACYCLOTETRADECANE)NICKEL(III) PERCHLORATE
Authors: Ito Tasuku , Sugimoto Masako , Toriumi Koshiro , Ito Haruko 
Published: July 2006

Abstract
The Ni in the title compound, [NiIIICl2L](ClO4), has an octahedral geometry of trans-NiCl2N4 type and is in the trivalent state. The Ni–N and Ni–Cl distances average 1.970(4) and 2.452(4) Å, respectively.
HIGH RESOLUTION 13C NMR SPECTRA OF CHITIN OLIGOMERS IN AQUEOUS SOLUTION
Authors: Saitô Hazime , Mamizuka Takashi , Tabeta Ryoko , Hirano Shigehiro 
Published: July 2006

Abstract
13C NMR spectra of chitin oligomers in aqueous solution were analyzed for a reference of assignment of solid state 13C NMR spectra of chitin and N-acyl chitosans, and also of 13C chemical shift data in aqueous solution.
SOME GRAPHITE LAMELLAR STRONG AND SUPER ACIDS AS CATALYSTS IN THE ISOMERIZATION AND CLEAVAGE REACTIONS OF PENTANE AND HEXANE
Authors: Yoneda Norihiko , Fukuhara Tsuyoshi , Abe Takafumi , Suzuki Akira , Kudo Kazuyoshi 
Published: July 2006

Abstract
Graphite lamellar catalysts of acids; SbF5, SbF5–HF and AlBr3–Br2 were found to be effective for the isomerization and cleavage reactions of pentane and hexane at room temperature. Graphite-SbF5–HF catalyst was excellent and gave skeletal isomerization products exclusively from pentane and hexane. Graphite-AlBr3–Br2 catalyst showed a highly catalytic activity to yield C4∼C7 alkanes which were formed via the β-cleavage reaction of oilgomeric alkyl cations derived from starting alkanes. Graphite-SbF5catalyst exhibited catalytic behavior and gave skeletal isomerization products exclusively for pentane but gave C4∼C7 alkanes as the major products for hexane.
X-RAY CRYSTAL STRUCTURE OF NEODYMIUM NITRATE COMPLEX WITH TETRAETHYLENE GLYCOL
Authors: Hirshima Yoshiyuki , Tsutsui Toshiyuki , Shiokawa Jiro 
Published: July 2006

Abstract
Neodymium atom is decacoordinated with oxygen atoms in the title complex, where tetraethylene glycol acts as a pentadentate ligand, forming a ring-like structure together with a unidentate nitrate. Two bidentate nitrates coordinate to neodymium atom from above and below the plane formed by tetraethylene glycol.
FORMATION OF BUTANE FROM BUTANOL CATALYZED BY Fe2O3, Fe2O3–ZrO2, AND Fe2O3–ZnO
Authors: Jin Tuo , Hattori Hideshi , Tanabe Kozo 
Published: July 2006

Abstract
A considerable amount of butane was found to form from 1-butanol or 2-butanol over Fe2O3, Fe2O3–ZrO2, and Fe2O3–ZnO at 250°C. The effect of hydrogen addition on the formation of butane was small. The mechanism is suggested to involve a nucleophilic substitution of OH− by H− which is liberated in the dehydrogenation of butanols.
ION-DIPOLE ASSOCIATION CHROMATOGRAPHY ON ION EXCHANGER IN NON-AQUEOUS MEDIA. SEPARATION AND CHARACTERIZATION OF CROWN ETHERS AND RELATED COMPOUNDS
Authors: Aoki Shin-ichi , Shiga Masanobu , Tazaki Masato , Nakamura Hiroshi , Takagi Makoto , Ueno Keihei 
Published: July 2006

Abstract
A silica gel-bound sulfonate type cation exchanger was used as a stationary phase in organic media for the chromatographic separation of crown ethers through the ion-dipole interaction. Crown ethers were retained on the column depending on the nature of metals on the ion exchanger, while the open-chain homologues showed only a limited affinity to the column. The chromatography was useful for the analysis and characterization of crown ethers and related compounds.
RADICAL CHROMATOGRAPHY OF SPIN ADDUCTS PRODUCED FROM γ-IRRADIATED LINOLEIC ACID IN NONAQUEOUS SOLUTION
Authors: Taniguchi Hitoshi , Aoshima Hitoshi 
Published: July 2006

Abstract
Spin adducts produced from γ-irradiated linoleic acid in an ethanol solution containing 2-methyl-2-nitrosopropane could be separated into nine fractions with high performance liquid chromatography. Distinct ESR spectra were observed from seven fractions and radical structures were identified for two major components.
NEW CHIRAL AMINOPHOSPHINES PREPARED FROM l-ORNITHINE AND CATALYTIC ASYMMETRIC HYDROGENATION USING THEIR RHODIUM(I) COMPLEXES
Authors: Osakada Kohtaro , Ikariya Takao , Saburi Masahiko , Yoshikawa Sadao 
Published: July 2006

Abstract
From readily preparable chiral diamines were obtained new aminophosphines, (3S)-[N,N′-bis(diphenylphosphino)]-3-aminopiperidine, and (3S)-[N,N′-bis(diphenylphosphino)]-3-(methylamino)piperidine. Asymmetric hydrogenation of α-acylaminoacrylic acids, employing Rh(I) complexes with these aminophosphines as catalyst, gave optically active N-acyl-α-amino acids.
DUAL COORDINATION BEHAVIOR OF MONOETHANOLAMINE IN HOFMANN-MEA-TYPE CLATHRATES Cd(NH2CH2CH2OH)2Ni(CN)4·C4H5N AND Cd(NH2CH2CH2OH)Ni(CN)4·2C6H6
Authors: Nishikiori Shin-ichi , Iwamoto Toschitake 
Published: July 2006

Abstract
In the host structures of the novel clathrates Cd(mea)2Ni(CN)4·C4H5N and Cd(mea)Ni(CN)4·2C6H6 the mea (= NH2CH2CH2OH) behaves as a unidentate ligand in the former and as an ambident one in the latter.
PREPARATION OF RED ORGANIC PIGMENT WITH SILICA GEL AS CORE
Authors: Suzuki Mituru , Itô Seisirô , Kuwahara Tosihide 
Published: July 2006

Abstract
Red organic pigment with silica gel as core was prepared by deriving the surface silanols of silica gel to the structure similar to azo dyestuff, such as Sudan I. The surface silanols were esterified with phenylmethanol, and the introduced phenyl group was nitrated, reduced, diazotized and coupled with 2-naphthol as shown in Fig. 1. The prepared pigment showed approximately same color as Sudan I.
A NEW METHOD FOR THE PREPARATION OF SUBSTITUTED PYRROLOANTHRONE
Authors: Arai Sadao , Yamagishi Takamichi , Hida Mitsuhiko 
Published: July 2006

Abstract
1-Benzylaminoanthraquinone reacted with benzyl chloride in the presence of powdered KOH in DMSO to give spiro[1-dibenzylamino-10-anthrone-9,3′-[2]phenyloxirane] (1) quantitatively under a nitrogen atmosphere. The oxirane (1) was converted into 1-phenyl-2-benzylpyrrolo[4,3,2-mn]anthracene-6-one (2) (substituted pyrroloanthrone) having strong fluorescence in ethanol by treatment with hydrochloric acid.
ELECTRONIC RAMAN BANDS IN POTASSIUM FERRICYANIDE
Authors: Ohata Atsuko , Morioka Yoshiyuki , Nakagawa Ichiro 
Published: July 2006

Abstract
In the Raman spectrum of potassium ferricyanide several new bands were found at low temperatures. The Raman bands at 665 cm−1 and 840 cm−1 are assigned to the electronic transitions within a ground state manifold of a low-spin Fe3+ ion and that at 935 cm−1 is attributed to a vibronic transition.
SYNTHESIS AND CHARACTERIZATION OF μ-OXO BIS(METHOXOOCTAETHYLPORPHYRINATOOSMIUM(IV))
Authors: Sugimoto Hiroshi , Mori Masayasu 
Published: July 2006

Abstract
The oxidation of octaethylporphyrinatoosmium(II)carbonyl with 2,3-dimethylindole/O2 gave a new tetravalent osmium complex. The elemental analysis, molecular weight measurement and spectroscopic data indicate that this complex is a diamagnetic linear μ-oxo dimer of octaethylporphyrinatoosmium(IV) methoxide; [OEPOs(IV)OCH3]2O.
X-RAY PHOTOELECTRON SPECTRA OF COBALT(III) COMPLEXES WITH SEVERAL KINDS OF SULFUR DONOR ATOMS
Authors: Kita Masakazu , Yamanari Kazuaki , Kishi Kosaku , Ikeda Shigero , Shimura Yoichi 
Published: July 2006

Abstract
The X-ray photoelectron spectroscopic data of 25 cobalt(III) complexes of CoNxS6−x types are reported(x = 6, 5, 4, 3, and 0). The S2p3⁄2 binding energies can readily be distinguished into eight types of sulfur ligands. The S2p3⁄2, Co2p3⁄2, and Nls binding energies are distributed between two extremes; one represents the case of thiolato and sulfenato complexes, and the other sulfinato and sulfito ones. These results are discussed in connection with the structural trans effect.
ASYMMETRIC CYCLOPROPANATION OF FUMARATES WITH METHYLENE BROMIDE CATALYZED BY COBALT OR NICKEL COMPLEXES
Authors: Matsuda Hideki , Kanai Hiroyoshi 
Published: July 2006

Abstract
Highly optically active trans-1,2-cyclopropanedicarboxylic acid derivatives were prepared from chiral fumarates and methylene bromide catalyzed by cobalt(0) or nickel(0) complexes.
PALLADIUM-PROMOTED REACTION OF ALLYL TRIMETHYLSILYL ETHERS WITH ARYL IODIDES
Authors: Hirao Toshikazu , Enda Jun , Ohshiro Yoshiki , Agawa Toshio 
Published: July 2006

Abstract
Allyl trimethylsilyl ether reacts with aryl iodides in the presence of palladium acetate and lithium chloride to afford selectively β-aryl (E)-α,β-unsaturated carbonyl compound.
A CONVENIENT ALLYLATION OF ORTHO-QUINONES. AN EXTENSION ON THE UTILITY OF ALLYLTIN REAGENTS
Authors: Maruyama Kazuhiro , Takuwa Akio , Naruta Yoshinori , Satao Kuniaki , Soga Osamu 
Published: July 2006

Abstract
Lewis acid catalyzed allylation of 1,2-naphthoquinones and o-benzoquinones with allyltributyltins gave monoallylation products in reasonable to high yields.
ON THE UNUSUAL SPECTROSCOPIC BEHAVIORS OF 3-METHYL-10-DODECYLISOALLOXAZINE(AMPHIPHILIC FLAVIN ANALOGUE)
Authors: Shinkai Seiji , Harada Akiko , Ishikawa Yu-ichi , Manabe Osamu , Yoneda Fumio 
Published: July 2006

Abstract
At room temperature in aqueous solution, the visible absorption peak of the title isoalloxazine (III) gives a three-banded fine structure, which has been believed to appear only in enzymatic hydrophobic region, in nonpolar solvents, or at extremely low temperature. On the other hand, another amphiphilic flavin 3-hexadecyl-10-butylisoalloxazine (II) has not such a fine structure. Thus, the unusual fine structure in (III) was attributed to aggregative “stacking” of the isoalloxazine heads, and the difference in the stacking mode between (II) and (III) was discussed.
CATALYSIS OF HETEROPOLY ACIDS ENTRAPPED IN ACTIVATED CARBON
Authors: Izumi Yusuke , Urabe Kazuo 
Published: July 2006

Abstract
Activated carbon was found to be able to entrap a certain amount of heteropoly acids, resulting in solid acid catalysts. Heteropoly acids thus entrapped were hardly removed even by extraction with hot water or hot methanol. The entrapped catalysts offer convenient methods for liquid-phase etherification of alcohols and vapor-phase selective esterification.
STEREOSELECTIVE SYNTHESIS OF α,β-EPOXYPHENYLKETONES FROM α,α-DIBROMOPHENYLKETONES AND ALDEHYDES USING STANNOUS FLUORIDE
Authors: Shoda Shin-ichiro , Mukaiyama Teruaki 
Published: July 2006

Abstract
trans-α,β-Epoxyphenylketones are stereoselectively synthesized via aldol type intermediates under mild conditions starting from α,α-dibromophenylketones and aldehydes using stannous fluoride.
THE ELECTROCHEMICAL REDUCTION OF BENZOYL AZIDE IN ACETONITRILE
Authors: Arai Toshio , Shingaki Tadao , Inagaki Masao 
Published: July 2006

Abstract
The electrochemical reduction of benzoyl azide in acetonitrile was investigated. As the products, N-benzoyl benzamide, benzamide, and benzoic acid were obtained, and the presence of azide anion (N3−) was observed in the electrolytic solution. A tentative mechanism of the electrochemical reduction was advanced.
COORDINATION-SITE EXCHANGE REACTIONS OF SOME ACETYLACETONATO PALLADIUM(II) COMPLEXES: AUTOCATALYSIS AND SELF-CATALYSIS
Authors: Tanaka Hiroshi , Isobe Kiyoshi , Kawaguchi Shinichi 
Published: July 2006

Abstract
A novel type of palladium(II) complexes containing a chelated acetylacetonate anion, carbon-bonded pyridyl ligand, and triphenylphosphine were prepared. They undergo the coordination-site exchange catalyzed by the phosphine freed from the reacting complex (autocatalysis) or the nitrogen end of the carbon-bonded pyridine in the reacting species (self-catalysis).
THE ASYMMETRIC MICHAEL REACTION OF (2R,3S)-3,4-DIMETHYL-2-PHENYLPERHYDRO-1,4-OXAZEPINE-5,7-DIONE WITH 1-NITROCYCLOHEXENE
Authors: Takeda Takeshi , Hoshiko Tomonori , Mukaiyama Teruaki 
Published: July 2006

Abstract
Optically active (2-nitrocyclohexyl)acetic acid(III) was obtained by the Michael reaction of (2R,3S)-3,4-dimethyl-2-phenylperhydro-1,4-oxazepine-5,7-dione(I) with 1-nitrocyclohexene in the presence of potassium t-butoxide (or cesium fluoride) and crown ether, followed by acid hydrolysis.
METHYLATED DERIVATIVES FROM THE HYDROLYSIS PRODUCTS OF SAFFLOMIN-A
Authors: Onodera Jun-ichi , Sato Shingo , Obara Heitaro 
Published: July 2006

Abstract
New methoxy-chalcone and flavanone derivatives were obtained by the methylation of the hydrolysis products of safflomin-A (1), a yellow component of the flowers of Safflower (Carthamus tinctorius L.). The formation of these derivatives significantly contributes to the elucidation of the structure of 1, proposed by us.
REDUCTION MECHANISM OF 12-MOLYBDO- AND 12-TUNGSTOPHOSPHORIC ACIDS IN THE SOLID STATE
Authors: Katamura Koichi , Nakamura Teiji , Sakata Kanji , Misono Makoto , Yoneda Yukio 
Published: July 2006

Abstract
On the basis of the temperature programmed reduction (TPR) by hydrogen and infrared spectral changes during reversible reduction-oxidation cycle, it was concluded that 12-molybdophosphoric acid in the solid state is reduced in two steps: H2 → 2H++ 2e → H2O . Reducibility of heteropoly acids measured by TPR exhibited fair correlation with their catalytic activity for methacrolein oxidation.
DETERMINATION OF CONFIGURATION OF MONOSACCHARIDES BY HPLC ON DIASTEREOISOMERIC 1-DEOXY-1-(N-ACETYL-α-METHYLBENZYLAMINO)ALDITOL ACETATES
Authors: Oshima Ryuichi , Kumanotani Ju 
Published: July 2006

Abstract
Acyclic diastereoisomers, 1-deoxy-1-(N-acetyl-α-methylbenzylamino)alditol acetates, are readily obtained by reductive amination of sugars with chiral α-methylbenzylamine in the presence of sodium cyanoborohydride. Ten pairs of enantiomers of common monosaccharides are resolved by an adsorption HPLC on the diastereoisomers.
NORCARADIENE–CYCLOHEPTATRIENE EQUILIBRIUM IN 7-ALKYL-7-CYANOCYCLOHEPTATRIENES
Authors: Takahashi Kazuko , Takase Kahei , Toda Hideo 
Published: July 2006

Abstract
The steric effect on the cycloheptatriene (CHT)–norcaradiene (NCD) equilibrium has been studied in simple 7-alkyl-7-cyanocycloheptatrienes, such as 7-ethyl-, 7-benzyl-, 7-isopropyl-, 7-cyclopropenyl-, and 7-tert-butyl-7-cyanocycloheptatrienes. The NCD component increases with bulkiness of the 7-alkyl group in this order, but the cycloheptatriene carrying an extremely bulky 7-tert-butyl group is out of this order.
THE MOLECULAR-SYMMETRY REDUCTION IN SOME CYCLIC DIFULVALENE SYSTEMS
Authors: Toyota Azumao , Nakajima Takeshi 
Published: July 2006

Abstract
The energetically favorable molecular-symmetry groups of some cyclic difulvalene systems are examined by using the theory of double bond fixation. It is found that molecules 2 and 5 should suffer the symmetry reduction from D2h to C2h and molecules 1, 3, 4, and 6 show no symmetry reduction. Further, a simple rule for predicting the stable molecular shapes of these systems is presented.
THE CLAISEN REARRANGEMENT USING β-ALKYLTHIO-β,γ-UNSATURATED ALCOHOLS. A NEW METHOD FOR THE PREPARATION OF FURANS AND γ-OXOCARBOXYLIC ESTERS
Authors: Takeda Takeshi , Fujiwara Tooru 
Published: July 2006

Abstract
Various furans and γ-oxocarboxylic esters were prepared by the pivalic acid-promoted Claisen rearrangement using β-alkylthio-β,γ-unsaturated alcohols followed by the treatment of the rearrangement products with an acid catalyst such as hydrochloric acid or sulfuric acid in good yields.
DYNAMIC STUDY ON THE QUENCHING OF THE EMISSION OF TRIS(BIPYRIDINE)RUTHENIUM(II) BY N,N′-DIMETHYL-4,4′-BIPYRIDINIUM (DMBP) WITH SODIUM DODECYLSULFATE IN THE PREMICELLAR REGION: ENHANCED ELECTRON TRANSFER IN DMBP-INDUCED PREMICELLES
Authors: Sato Hiroyasu , Kawasaki Masahiro , Kasatani Kazuo , Ban Taketora 
Published: July 2006

Abstract
A dynamic study was made on the quenching of the emission of tris(bipyridine)ruthenium(II) by N,N′-dimethyl-4,4′-bipyridinium (DMBP) in the presence of sodium dodecylsulfate, most enhanced in the premicellar region. It revealed that the enhancement is due to the DMBP-induced formation of premicelles in which a very effective electron transfer occurs.
CARBOXYLATION OF 1-ACYLINDOLES WITH CARBON MONOXIDE AND PALLADIUM ACETATE IN THE PRESENCE OF SODIUM PEROXYDISULFATE
Authors: Itahara Toshio 
Published: July 2006

Abstract
A treatment of 1-acylindoles with palladium acetate and sodium peroxydisulfate under a carbon monoxide atmosphere gave the corresponding 1-acylindole-3-carboxylic acids.
SYNTHESIS OF NEW 2-OXAZOLINONES FROM N-CARBOXY α-DEHYDROAMINO ACID ANHYDRIDES
Authors: Yonezawa Yasuchika , Shin Chung-gi , Ohtsu Akira , Yoshimura Juji 
Published: July 2006

Abstract
Addition of methanol to N-carboxy α-dehydroamino acid anhydride in the presence of NBS, followed by the treatment of the resulting product with base gave a new 2-oxazolinone-4-carboxylate.
PHOTOLYSIS OF [n.2.2]PROPELLANONES INVOLVING A CYCLOBUTANONE RING
Authors: Tobe Yoshito , Kanazawa Yukihiko , Kakiuchi Kiyomi , Odaira Yoshinobu 
Published: July 2006

Abstract
Photolysis of [n.2.2]propellanones (5) and (6) involving a cyclobutanone ring in methanol afforded the cycloelimination products 7 and 9 in good yields, especially in the case of highly strained [3.2.2]propellanone (6), via α-cleavage in the direction leading to the less favorable acyl-alkyl radical pair.
ALKYLATION OF TRIMETHYLSILYLCYCLOPENTADIENIDE ANION WITH tert-BUTYL BROMOACETATE. A DESILYLATION REACTION ASSISTED BY A REMOTE STERIC REPULSION
Authors: Carceller Elena , Massó Teresa , Serratosa Fèlix , Vilarrasa Jaume 
Published: July 2006

Abstract
Alkylation of trimethylsilylcyclopentadienide anion with tert-butyl bromoacetate, in contrast with the alkylation with the corresponding methyl ester, proceeds with simultaneous elimination of the trimethylsilyl group. A peculiar, long-distance steric effect is postulated.
GENERATION OF SINGLET OXYGEN ON IRRADIATION OF CONTACT CHARGE–TRANSFER PAIRS OF 1,2,3,4-TETRAMETHYLNAPHTHALENE WITH OXYGEN
Authors: Sakuragi Hirochika , Furusawa Gen-ichi , Ueno Katsuhiko , Tokumaru Katsumi 
Published: July 2006

Abstract
Irradiation of 1,2,3,4-tetramethylnaphthalene (1) in methanolbenzene (1:1) or methanol-acetonitrile (1:1) under oxygen with 366nm light resulted in the formation of an epoxyalcohol (2), a diol (3), an enediol (4), and an endoperoxide (5). Based on some features of the reaction, it is assumed that this photooxygenation is due to singlet oxygen generated on excitation of the contact charge–transfer pairs of 1 with oxygen.
DIOXYGEN ABSORPTION BY A 2:1 COPPER(II)-DISULFIDE SYSTEM. PARTIAL INCORPORATION OF OXYGEN ATOMS FROM DIOXYGEN UPON COPPER(II)-CATALYZED DISULFIDE BOND CLEAVAGE TO SULFINATE
Authors: Yamauchi Osamu , Seki Hiroko 
Published: July 2006

Abstract
Synthetic and spectroscopic studies have established that the oxygen atoms from dioxygen are partly incorporated into the sulfinate moiety of the Cu(II)-2-[(2-pyridylmethyl)amino]ethylsulfinate complex upon the Cu(II)-catalyzed disulfide bond cleavage of bis {2-[(2-pyridylmethyl)amino]ethyl}disulfide under dioxygen.
THE REACTION OF TERMINAL ALKYNES WITH THE REAGENT PREPARED FROM BENZENESELENENYL BROMIDE AND SILVER NITRITE. NOVEL EFFICIENT SYNTHESIS OF 1-ALKYNYL PHENYL SELENIDES
Authors: Hayama Takashi , Tomoda Shuji , Takeuchi Yoshito , Nomura Yujiro 
Published: July 2006

Abstract
1-Alkynyl phenyl selenides were synthesized in good yields by the reaction of 1-alkynes with a new reagent prepared from benzeneselenenyl bromide and silver nitrite.
A CONVENIENT PREPARATIVE METHOD OF CARBOHYDRATE PHOSPHATES WITH BUTYLLITHIUM AND PHOSPHOROCHLORIDATE
Authors: Inage Masaru , Chaki Haruyuki , Kusumoto Shoichi , Shiba Tetsuo 
Published: July 2006

Abstract
α-Glycosyl phosphates and 4-phosphates of N-acylglucosamine derivatives were prepared in high yields via the reaction of corresponding O-lithium salts with dibenzyl or diphenyl phosphorochloridate at low temperature.
REACTION OF SYN HEAD-TO-HEAD COUMARIN DIMER WITH AMINES AND THERMAL BEHAVIOR OF THE ADDUCTS
Authors: Hasegawa Masaki , Katsuki Hirokazu , Yonezawa Noriyuki , Yoshida Tsuyoshi , Ikebe Yutaka 
Published: July 2006

Abstract
The lactone-opening reaction of syn head-to-head coumarin dimer with amines gave c-3,c-4-bis(2-hydroxyphenyl)-r-1,c-2-cyclobutanedicarboxamides and/or -dicarboximides. The product ratio of the amide to the imide varied with the reaction temperature and the amount of amine used. Thermal reaction of these lactone-opened derivatives proceeded in two ways depending on the nature of amine moiety to give either the original coumarin dimer or 2,2’-dihydroxystilbene and the maleimide derivative.
COPPER(I) IODIDE ASSISTED REACTION OF NONACTIVATED IODOARENES WITH SODIUM TRIFLUOROACETATE IN HEXAMETHYLPHOSPHORIC TRIAMIDE. NUCLEAR TRIFLUOROMETHYLATION AND DIARYL ETHER FORMATION
Authors: Suzuki Hitomi , Yoshida Yoshiki , Osuka Atsuhiro 
Published: July 2006

Abstract
Polymethyliodobenzenes react with sodium trifluoroacetate, in tine presence of copper(I) iodide, in hexamethylphosphoric triamide at 150–180°C, giving a mixture of the corresponding polymethylbenzotrifluoride, parent hydrocarbon, and bis(polymethylphenyl) ether.
PREPARATION OF A NOVEL DINUCLEAR COMPLEX OF PALLADIUM BRIDGED BY DIANION OF DIACETONE ALCOHOL
Authors: Suzuki Hiroharu , Moro-Oka Yoshihiko , IKAWA Tsuneo , Miyajima Tohru , Tanaka Isao , Ashida Tamaichi 
Published: July 2006

Abstract
Novel dinuclear complex of palladium coordinating dianion of diacetone alcohol is prepared by the reaction of a μ-peroxo complex of palladium with acetone or diacetone alcohol. Coordination of the dianion of diacetone alcohol is confirmed by means of X-ray structural analysis.
AN ALDOL-TYPE REACTION OF ACETONITRILES USING DIALKYLBORYL TRIFLATE
Authors: Hamana Hiroshi , Sugasawa Tsutomu 
Published: July 2006

Abstract
Acetonitriles and benzaldehydes react in the presence of dialkyl boryl triflate and diisopropylethylamine in dichloromethane to give the corresponding aldol-type products in good yields under mild conditions.
CYCLIZATION REACTION THROUGH OXIRANE RING CLEAVAGE OF 9,10-EPOXYHUMULA-2,6-DIEN-13-AL. SELECTIVE FORMATION OF 3,6-SECOPROTOILLUDANE AND BICYCLOHUMULANE SKELETONS
Authors: Shirahama Haruhisa , Hayano Kiyoharu , Arora Gurdial Singh , Ohtsuka Toshikazu , Murata Yoshihiko , Matsumoto Takeshi 
Published: July 2006

Abstract
9,10-Epoxyhumula-2,6-dien-13-al gave 3,6-secoprotoilludane derivatives by treatment with TMSOTf and a bicyclohumulane derivative by BF3·OEt2 selectively in each case.
ENANTIOSELECTIVE CROSS ALDOL REACTION VIA DIVALENT TIN ENOLATE
Authors: Iwasawa Nobuharu , Mukaiyama Teruaki 
Published: July 2006

Abstract
Highly enantioselective cross aldol reaction between aromatic ketones and various aldehydes is achieved via divalent tin enolates employing chiral diamines derived from (S)-proline as ligands.
SURFACE SUBCARBONYLS IMPREGNATED BY THE REACTIONS BETWEEN Co2(CO)8 AND γ-Al2O3 OR SiO2
Authors: Nakamura Ryuichi , Oomura Akihiro , Okada Norio , Echigoya Etsuro 
Published: July 2006

Abstract
Some different surface subcarbonyls such as [Co4(CO)12]ads., [Co2(Co)6B2], and [Co(Co)3B]2, (B = O2−, OH− on the supports, were observed in the impreganation of Co2(CO)8 with preheated γ-Al2O3 and SiO2 supports at 298 K. Their relative concentrations distinctly depend on the Co loading as well as the support.
STUDIES ON THE NEW CRYSTALLINE PHASE OF AZAFERROCENE AND RUTHENOCENE
Authors: Kubo Atsushi , Ikeda Ryuichi , Nakamura Daiyu 
Published: July 2006

Abstract
A new low-temperature phase of azaferrocene Fe(C5H5)(C4H4N), stable below 281 K, was found from the measurements of proton spinlattice relaxation time T1, and differential thermal analysis. For ruthenocene Ru(C5H5)2, a phase transition was located at 392 K.