bluuebunny/crossref_metadata_2025_split huggingface dataset:
THE PREPARATION OF N-ALKYL AND N-ARYLGLYCINES FROM GLYOXYLIC ACID USING CARBONYLHYDRIDOFERRATE AS A REDUCING AGENT
Authors: Watanabe Yoshihisa , Shim Sang Chul , Mitsudo Take-aki , Yamashita Masakazu , Takegami Yoshinobu 
Published: July 2006

Abstract
N-Substituted glycines were prepared from glyoxylic acid and a variety of primary amines using carbonylhydridoferrate (0).
STEREOSELECTIVE SYNTHESIS OF TRISUBSTITUTED OLEFINS VIA π-ALLYLIC NICKEL BROMIDE COMPLEXES WITH FUNCTIONAL GROUP
Authors: Sato Kikumasa , Inoue Seiichi , Morii Shigeki 
Published: July 2006

Abstract
The reaction of several organic halides with the complexes, prepared from 1-bromo-2-methyl-4-phenoxy-2-butene or 4-benzyloxy-1-bromo-2-methyl-2-butene and nickel carbonyl in benzene, afforded trisubstituted (E)-olefins, such as 2-methyl-4-phenoxy-1-phenyl-2-butene, geranyl benzyl ether, and farnesyl benzyl ether, stereoselectively.
CARBON-13 NMR SPECTRA OF SODIUM SALTS OF DIETHYL ALKYL-SUBSTITUTED MALONATES
Authors: Kiyooka Syun-ichi , Suzuki Kojiro 
Published: July 2006

Abstract
13C chemical shifts of diethyl alkyl-substituted malonates and their sodium salts in dimethylsulfoxide are reported. The resonances of carbonyl carbons and α-carbons having an active hydrogen in the sodium salts were respectively found at 0.5∼1 ppm 20 ppm lower fields than those of the original malonates did.
TRANSFER HYDROGENATION OF ALDEHYDES CATALYZED BY DIHYDRIDOTETRAKIS(TRIPHENYLPHOSPHINE)RUTHENIUM(II)
Authors: Imai Hideaki , Nishiguchi Takeshi , Fukuzumi Kazuo 
Published: July 2006

Abstract
In the hydrogen transfer reaction catalyzed by dihydridotetrakis(triphenylphosphine)ruthenium(II), aldehydes and ketones are reduced to corresponding alcohols by ethers, hydroaromatic compounds, a tert-amine and alcohols under mild conditions.
LAYERED COMPOUNDS. XXVIII. [2.2](1,3)PYRENOPHANE AND ANOTHER TRIPLE-LAYERED METACYCLO-PYRENOPHANE
Authors: Umemoto Teruo , Kawashima Toshihide , Sakata Yoshiteru , Misumi Soichi 
Published: July 2006

Abstract
[2.2] (1,3)Pyrenophane (5) and a triple-layered metacyclopyrenophane (10) were synthesized successfully via transannular reaction of 4,6-bisbromomethyl[2.2]metacyclophane with bromine as a key step and finally by dehydrogenation with DDQ.
THERMALLY STABLE CYCLOHEXADIENYL RADICALS PRODUCED IN THE BENZENE CLATHRATES WITH METAL COMPLEX HOST LATTICES
Authors: Iwamoto Toschitake , Kiyoki Mamoru , Matsuura Niro 
Published: July 2006

Abstract
The cyclohexadienyl radicals in the γ-irradiated benzene clathrates Cd(diam)M(CN)4·2C6H6 (diam = (NH3)2, NH2(CH2)2NH2, or NH2(CH2)3NH2; M = Cd or Hg) are stable up to 423 K.
A CONVENIENT METHOD FOR METHYLENATION OF CARBONYL COMPOUNDS. THE REDUCTIVE β-ELIMINATION OF 2-(PHENYLTHIO)ETHANOLS INTO TERMINAL OLEFINS USING TiCl4–LiAlH4
Authors: Watanabe Yutaka , Shiono Manzo , Mukaiyama Teruaki 
Published: July 2006

Abstract
2-(Phenylthio)ethanols readily accessible from carbonyl compounds and phenylthiomethyllithium were converted into terminal olefins in high yields by way of the reductive β-elimination on treatment with TiCl4 and LiAlH4 in the presence of tertiary amine such as 1,8-bis(dimethylamino)naphthalene or tri-n-butylamine.
NOVEL [σ+π] CYCLOADDITION OF SILACYCLOBUTANES WITH ACETYLENES CATALYZED BY PALLADIUM COMPLEXES
Authors: Sakurai Hideki , Imai Takafumi 
Published: July 2006

Abstract
In the presence of a palladium complex, 1,1-dimethyl-1-silacyclobutane reacts smoothly with dimethyl acetylenedicarboxylate to give 1,1-dimethyl-2,3-bis(methoxycarbonyl)-1-silacyclohex-2-ene in quantitative yield. Other silacyclobutanes react similarly with various acetylenes to give silacyclohexene derivatives.
CONVERSION OF γ -RAYS INTO UV-LIGHT
Authors: Sato Shin , Okazaki Kiyoshi 
Published: July 2006

Abstract
The apparatus for the measurement of the efficiency of the conversion of γ-rays into UV-light has been devised. The conversion system consists of helium gas with a drop of mercury. The G-value of UV-light-photons at 253.7 nm produced in this system by γ-irradiation was estimated both experimentally and theoretically. The mercury photosensitized decomposition of nitrous oxide at 0°C was used as the actinometer. The efficiency of the conversion of 60Co γ-rays into UV-light at 253.7 nm was found to be 80 %.
VINYLAMINE XIX. ZUR HYBRIDISIERUNG DES STICKSTOFFS IN DIPHENYLAMIN UND iso-BUTENYLANILIN
Authors: Ahlbrecht Hubertus , Papke Günter 
Published: July 2006

Abstract
Die Darstellung von 15N-markiertem Diphenylamin (2) und iso-Butenylanilin (3) wird beschrieben. Vergleich der 1J15NH -Kopplung zeigt, daß der Einfluß einer Vinylgruppe und eines Phenylkerns auf einen Anilinstickstoff sehr ähnlich ist und in beiden Fällen zu einer starken Einebnung der Stickstoffpyramide führt.
REDOX SUBSTOICHIOMETRY IN ISOTOPE DILUTION ANALYSIS. I. DETERMINATION OF ANTIMONY IN THE PRODUCT OF RADIOANTIMONY 124Sb
Authors: Kambara Tomihisa , Suzuki Junsuke , Yoshioka Hiroe , Nakamura Toshio 
Published: July 2006

Abstract
Redox substoichiometry in the isotope dilution analysis of antimony was studied. As the substoichiometric reaction the oxidation of trivalent antimony to pentavalent with potassium permanganate was used, followed by the BPHA extraction of trivalent antimony. The redox substoichiometry was applied to the determination of antimony content in 124Sb obtained from JAERI. The content determined was 0.481±0.02 μg, which agreed with the certified value.
PREPARATION AND CIRCULAR DICHROISM OF OPTICAL ACTIVE COBALT(III) COMPLEX CONTAINING 3,3′-DIMETHYL-2,2′-BIPYRIDINE
Authors: Suzuki Toshishige 
Published: July 2006

Abstract
Cobalt(III) complex of a bulky ligand 3,3′-dimethyl-2,2′-bipyridine (dmbpy), [Coen2dmbpy] Cl(ClO4)2·H2O was synthesized and resolved. Stereospecific coordination was found. The effects of non-coplanarity of coordinated dmbpy were observed in the absorption (AB) and circular dichroism (CD) spectra of the resolved complex.
A CONVENIENT METHOD FOR THE REDUCTION OF RUTHENIUM AND RHODIUM HALIDE COMPLEXES
Authors: Kono Hiromichi , Wakao Naofumi , Nagai Yoichiro 
Published: July 2006

Abstract
[RuX2(PPh3)3] (X = Cl or Br) and [RhCl(PPh3)3] were reduced with silicon hydrides in the presence of triethylamine in benzene to give [RuHX(PPh3)3·C6H6] and [RhH(PPh3)4] in high yields.
THE PHOTOLYSIS OF VINYL IODIDE AND THE MASS SPECTRUM OF VINYL RADICAL
Authors: Yamashita Shigeru 
Published: July 2006

Abstract
The photolysis of vinyl iodide has been studied using UV light beam of high intensity and a collision-free photochemical reactor incorporated in the ion-source of mass spectrometer. The primary process C2H3I + hν → C2H3 + I was found predominant and the process C2H3I + hν → C2H2 + HI minor, and the mass spectrum of vinyl radical was obtained.
APPARENT MOLAL COMPRESSIBILITY OF SODIUM CHLORIDE IN WATER
Authors: Sakurai Masao , Nakajima Toshio , Komatsu Tsuyoshi , Nakagawa Tsurutaro 
Published: July 2006

Abstract
Apparent molal adiabatic compressibilities of sodium chloride were measured in water at 5, 25, and 45°C. The Debye–Hückel limiting slopes were estimated experimentally. A convenient equation for the conversion of adiabatic to isothermal compressibilities was derived. The results indicate that the limiting slope for isothermal compressibility is larger by about 10% than that for adiabatic compressibility.
THERMOLYSES OF 1,8-CIS AND TRANS-TRICYCLO[6.4.0.03,6]DODECA-4,10-DIENE-2,7-DIONE. A SEQUENTIAL RING OPENING AND INTRAMOLECULAR DIELS-ALDER REACTION LEADING TO A CAGE MOLECULE AND MARKED DEPENDENCE OF THE REACTION ON CONFIGURATION AND SUBSTITUENT
Authors: Oda Masaji , Miyazaki Hideo , Kitahara Yoshio 
Published: July 2006

Abstract
Thermolysis of the ois title compound 4 yields a cage molecule 6 by a sequential ring opening of the cyclobutene and intramolecular Diels–Alder reaction. On the other hand, the trans isomer 8 gives 2,3-benzo-2,5-cyclooctadiene-1,4-dione 10 by a ring opening followed by hydrogen shifts and an oxidation. While the former reaction shows a marked substituent effect, the latter does not. An unusual conformation of 10 is suggested.
THE ASSOCIATION OF i-BUTYRATE AND TRIMETHYLACETATE IONS IN WATER
Authors: Ebina Satoshi , Uedaira Hisashi 
Published: July 2006

Abstract
The electric conductivities of sodium i-butyrate and trimethylacetate were measured in water at 25°C. It was shown that the molar conductivities of both solutions reach a maximum at a concentration of about 1 mol m−3 (McBain effect), and that the hydrophobic interaction of i-butyrate and trimethylacetate ions is so strong that these ions form a dimer.
METATHESIS OF ALKENES HAVING FUNCTIONAL GROUPS
Authors: Nakamura Ryuichi , Matsumoto Shuichi , Echigoya Etsuro 
Published: July 2006

Abstract
WC16/(CH3)3Al2Cl3 and Mo(OC2H5)2Cl3/(CH3)3Al2Cl3 were found to be the effective catalysts for the metathesis of alkenes having various functional groups such as –COOR, –OCOR, –OR, –CN, –COR, and –CONR2. These reactions should be quite important in a synthesis of telechelic compounds or bioactive substances such as sex attractant pheromones.
A NEW METHOD FOR CYCLOPENTENONE ANNELATION VIA THE REARRANGEMENT OF BICYCLIC CYCLOPROPYL KETONES. SYNTHESES OF BICYCLO[4.3.0] NON-6-EN-8-ONE AND BICYCLO[5.3.0]DEC-7-EN-9-ONE
Authors: Wada Eiji , Nakai Takeshi , Okawara Makoto 
Published: July 2006

Abstract
A new sequence for cyclopentenone annelation is described which involves the rearrangement of protonated bicyclic acetylcyclopropanes as a key step. Applications of the annelation procedure to cyclohexene and cycloheptene afforded the bicyclo[4.3.0]nonane and bicyclo[5.3.0]decane frameworks, respectively. Further elaboration of the bicyclodecane derivative provides a simple and efficient synthetic route to 2-substituted azulenes.
NEW SYNTHESIS OF γ-IONONE
Authors: Mukaiyama Teruaki , Saigo Kazuhiko , Takazawa Osamu 
Published: July 2006

Abstract
γ-Ionone was successfully synthesized without accompanying any isomeric substances such as α- and β-ionones by dehydration of a key intermediate, 4-(6-methylene-2,2-dimethylcyclohexyl)-4-hydroxy-2-butanone, prepared from γ-cyclocitral and acetone by the use of di-n-butylboryl trifluoromethanesulfonate and triethylamine as coupling reagents.
THE REACTION OF ENOL ETHERS WITH SIMMONS–SMITH REAGENT. THE FORMATION OF ALLYLIC ETHERS
Authors: Ryu Ilhyong , Murai Shinji , Sonoda Noboru 
Published: July 2006

Abstract
The Simmons–Smith reaction of methyl and ethyl cyclohexenyl ethers has resulted in the formation of allylic ethers, in addition to expected cyclopropyl ethers. In one case the allylic ether was obtained as the major product of this reaction.
NOVEL CYCLOPROPENYL PHOSPHONIC ACID ESTERS AND NEW SYNTHESIS OF PYRROLE DERIVATIVE. REACTIONS OF TRIALKYLTHIOCYCLOPROPENIUM ION AND DIALKYLTHIOCYCLOPROPENETHIONE WITH TRIVALENT PHOSPHORUS COMPOUNDS
Authors: Yoneda Shigeo , Hirai Hideo , Yoshida Zen-ichi 
Published: July 2006

Abstract
The reactions of trialkylthiocyclopropenium ion (1) and dialkylthiocyclopropenethione (6) with various trivalent phosphorus compounds were investigated. The reactions of 1 and 6 with trialkyl phosphite were found to give the cyclopropenyl phosphonic acid esters. The similar treatment of 1 with hexamethylphosphorous triamide led to the formation of the pyrrole derivative.
SELECTIVE CLEAVAGE OF C–O BONDS IN ESTERS THROUGH OXIDATIVE ADDITION TO NICKEL(0) COMPLEXES
Authors: Ishizu Junichi , Yamamoto Takakazu , Yamamoto Akio 
Published: July 2006

Abstract
Zero-valent nickel complexes, especially bis(1,5-cyclooctadiene)nickel Ni(cod)2 in the presence of various tertiary phosphines, promote cleavage of C–O bonds in phenyl carboxylates and alkenyl acetates to give nickel complexes such as nickel carbonyls and nickel phenoxide and other gaseous and liquid products. The position of cleavage of the ester and consequently the products of the reaction depend on the ester, nickel complex employed and the ligand added to the reaction mixture.
INTERMEDIATE STATE IN THE PHOTOIONIZATION OF CHLORPROMAZINE IN ETHANOL
Authors: Iwaoka Teiki , Kondo Michio 
Published: July 2006

Abstract
The excited state responsible for the photoionization of chlorpromazine was investigated in ethanol. Triplet–triplet energy transfer experiment excluded the participation of the lowest (π-π*)triplet state in the ionization process. Fluorescence was not influenced by addition of several quenchers which retarded the photoionization. The higher triplet state of different electronic configuration from the lowest (π-π*)triplet state is suggested to be the reactive state for the ionization.
INAPPLICABILITY OF THE “EXO RULE” TO THE 1,3-DIPOLAR CYCLOADDITIONS TO NORBORNADIENES
Authors: Taniguchi Hisaji , Ikeda Toshikazu , Yoshida Yoshihiro , Imoto Eiji 
Published: July 2006

Abstract
1,3-Dipolar cycloadditions of phenylglyoxylonitrile oxide, benzonitrile-N-phenylimine, or N-phenyl-C-p-nitrophenylnitrone to norbornadiene and 2,3-disubstituted norbornadienes gave the endo-adducts together with the exo-adducts. These observations show that 1,3-dipolar cycloadditions to norbornadienes do not follow the “exo rule” of Alder and Stein.
ENANTIOSELECTIVE ADDITION OF DICHLOROCARBENE TO OLEFINS BY USE OF CHIRAL TERTIARY AMINES
Authors: Kimura Yoshikazu , Ogaki Yasuhisa , Isagawa Kakuzo , Otsuji Yoshio 
Published: July 2006

Abstract
Dichlorocarbene generated from chloroform and aqueous sodium hydroxide using chiral tertiary amines as a catalyst adds enantioselectively to olefins to give chiral dichlorocyclopropane derivatives. Optical rotations of the products strongly depend on the structure of catalysts employed.
THE REACTION OF ORGANOSILICON HYDRIDES WITH ETHYL AZIDOFORMATE. FORMATION OF ORGANOSILYL ISOCYANATES AND ALKOXIDES FROM ETHYL N-ORGANOSILYLCARBAMATES
Authors: Watanabe Hamao , Arai Nori , Ohsawa Noboru , Kobayashi Mitsunobu , Kitahara Tohru , Nagai Yoichiro 
Published: July 2006

Abstract
Reaction of organosilicon hydrides with ethyl azidoformate was investigated. The products, ethyl N-silylcarbamates which were formed in 30–80% yields, are shown to be thermally unstable and to give organosilyl isocyanates and alkoxides by heating.
ASYMMETRIC HYDROGENATION BY A RHODIUM CATALYST COMPLEXED WITH A PHOSPHINITE DERIVED FROM CELLULOSE
Authors: Kawabata Yasuziro , Tanaka Masato , Ogata Ikuei 
Published: July 2006

Abstract
High optical yields up to ca. 77% were obtained in the hydrogenation of 2-phenyl-1-butene by use of a rhodium catalyst complexed with an insoluble phosphinite derived from 6-O-triphenylmethylcellulose. Recycling of the catalyst was also investigated.
SELECTIVE FORMATION OF KETONE, DIKETONE AND ALDEHYDE BY THE CO INSERTION INTO NICKEL–ALKYL BONDS OF DIALKYLNICKEL COMPLEXES. A NOVEL NICKEL-CATALYZED SYNTHESES OF KETONES AND TERTIARY ALCOHOLS FROM GRIGNARD REAGENTS, ARYL HALIDES, AND CARBON MONOXIDE
Authors: Yamamoto Takakazu , Kohara Teiji , Yamamoto Akio 
Published: July 2006

Abstract
Reaction of dialkylnickel complexes, NiR2L2 (R = CH3, C2H5, C3H7; L = 1/2 (2,2′-bipyridine), 1/2[1,2-bis(diphenylphosphino)ethane], triethylphosphine) with carbon monoxide give ketones, diketones and aldehydes depending on the reactivity of the dialkylnickel complexes and the reaction temperature. Nickel complexes NiY2L2 (Y = halogen or alkyl; L = ligand) catalyze formation of ketones and tertiary alcohols from Grignard reagents, aryl halides, and carbon monoxide.
AN ELECTRON SPIN RESONANCE STUDY OF THE OXIDO-REDUCTIVE INTERACTION OF Cu(II)-GLYCYLGLYCINE AND CYSTEINE IN A NEUTRAL AQUEOUS SOLUTION
Authors: Hanaki Akira 
Published: July 2006

Abstract
The oxi do-reductive interaction of Cu(II)-glycylglycine and cysteine was examined with electron spin resonance ( ESR) spectroscopy using a continuous-flow technique. Firstly, Cu(II)-glycylglycine associates with cysteine to form a ternary complex, which is decomposed subsequently (relaxation time = 150 msec) to ESR silent species. When an excess of cysteine is added, the ternary complex is transformed to unidentified Cu(II) species, probably Cu(II)-cysteine complexes, undergoing rapid decomposition to Cu(I) species.
2-DIALKYLAMINOPYRIDINIUM SALTS AS NEW TYPE OF CATALYSTS IN TWO-PHASE ALKYLATION REACTION
Authors: Tanaka Toshio , Mukaiyama Teruaki 
Published: July 2006

Abstract
2-Dialkylaminopyridinium salts, derived from 2-halopyridinium salts and primary or secondary amines, were effectively employed as catalysts in the two-phase alkylation reaction of active methylene compounds with alkyl halides to afford the corresponding alkylated products in good yields.
BETAINE AS AN EFFECTIVE ACID CAPTOR: A CONVENIENT METHOD FOR THE SYNTHESIS OF CARBOXYLIC ESTERS
Authors: Mukaiyama Teruaki , Toda Haruhiko , Kobayashi Susumu 
Published: July 2006

Abstract
The equimolar reactions of carboxylic acids and alcohols with 1-methyl-2-fluoro or -2-chloropyridinium salt in the presence of a betaine, (3,4-dihydro-2H-pyrido[1,2-a]pyrimidin-2-one(I)), afforded the corresponding carboxylic esters in good yields.
CATALYTIC DECOMPOSITION OF A DIBENZYLSELENONIUM YLIDE WITH THIOAMIDES
Authors: Tamagaki Seizo , Hatanaka Isao 
Published: July 2006

Abstract
Dibenzylselenonium cyano(methoxycarbonyl)methylide was readily decomposed by the action of catalytic amounts of thioamides affording the corresponding selenide and tetra-substituted ethylene, while with increasing amounts of the thioamides the ylide was found to react in a different fashion.
STRUCTURE OF KADSURIC ACID. A NEW SECO-TRITERPENOID FROM KADSURA JAPONICA DUNAL
Authors: Yamada Yasuji , Hsu Chau-Shin , Iguchi Kazuo , Suzuki Sukeji , Hsu Hong-Yen , Chen Yuh-Pan 
Published: July 2006

Abstract
A new A-seco-lanostane type triterpenoid, kadsuric acid, was isolated from Kadsura japonica Dunal and its structure was elucidated as 1 on the basis of the spectroscopic data and the chemical transformations.
THE CHOLESTERIC MESOPHASE IN POLY-l-GLUTAMIC ACID-POLY(ETHYLENE OXIDE)-DIMETHYLFORMAMIDE SYSTEM
Authors: Tsutsui Tetsuo , Tanaka Takehide 
Published: July 2006

Abstract
The cholesteric mesophase of poly-l-glutamic acid which incorporated poly(ethylene oxide) chains was found. The polarizing micrographs of the cholesteric phases, the phase diagram of poly-l-glutamic acid-poly(ethylene oxide)-dimethylformamide ternary system, and the effect of molecular weight of poly(ethylene oxide) on the stability of the cholesteric phases, suggested the importance of the intermolecular interactions between constituent polymers for the stabilization of the cholesteric mesophases.
Hg(II)-, Hg(I)-, AND Ag(I)-INDUCED 1,8-DIALKOXYLATION, -DIAMINATION, AND -DIACYLOXYLATION OF 2,7-DI-TERT-BUTYL-4,5,9,10-TETRAPHENYLTRICYCLO [6.2.0.03,6]DECA-1,3(6),4,7,9-PENTAENE
Authors: Takehira Yoshikazu , Tanaka Koichi , Toda Fumio 
Published: July 2006

Abstract
The treatment of the title compound (1) with Hg(II), Hg(I), or Ag(I) salt in the presence of ROH, RNH2, and RCO2H afforded 5,10-dialkoxy- (2a–c), 5,10-diamino- (2d–e), and 5,10-diacyloxy-2,7-di-tert-butyl-4,5,9,10-tetraphenyltricyclo [6.2.0.03,6]deca-1,3,6,8-tetraene (2f–g), respectively.
AES-FDS SIMULTANEOUS MEASUREMENT FOR DECOMPOSITION OF FORMIC ACID OVER CLEAN SURFACE OF COPPER–NICKEL ALLOY
Authors: Watanabe Kuniaki , Mohri Mamoru , Hashiba Masao , Yamashina Toshiro 
Published: July 2006

Abstract
A combined system of Auger spectroscopy (AES) and flash desorption spectroscopy (FDS) was utilized to reveal adsorption and decomposition processes of formic acid over clean surface of Cu–Ni alloy. It was found that the surface treatments of ion-bombardment and annealing brought about a great difference in decomposition process which could be attributed to change of the surface composition.
METHANOL REFORMING REACTION OVER COPPER-CONTAINING MIXED OXIDES
Authors: Kobayashi Haruo , Takezawa Nobutsune , Minochi Chiaki 
Published: July 2006

Abstract
Methanol was decomposed into hydrogen and carbon dioxide in the presence of water at atmospheric pressure over copper-containing mixed oxides, indicating that the reforming reaction CH3OH + H2O = CO2+ 3H2 proceeded to an appreciable extent. The mixed oxides were active and selective for the reforming reaction whereas the single oxides which constituted the mixed oxides were much less active for the reaction.
SPIN-LABELED METACHROMATIC DYES. II. INTERACTIONS OF SPIN-LABELED PROFLAVINE WITH POLYPHOSPHATE AND SOME DYE-POLYPHOSPHATE COMPLEXES
Authors: Yamaoka Kiwamu , Noji Sumihare 
Published: July 2006

Abstract
Metachromasy was studied by means of ESR and light absorption using a spin-labeled Proflavine (slPF) which interacts with polyphosphate. The exchange interaction between bound slPF’s was observed. Qualitative correlations were found between the magnetic and optical data. slPF could be utilized as a probe for dye-polyphosphate complexes.
STUDIES ON NITRO SUGARS VII. SYNTHESIS OF METHYL 2,3,5-TRIACETAMIDO-2,3,5-TRIDEOXY-β-d-PENTOFURANOSIDES VIA NITROOLEFIN
Authors: Takamoto Tetsuyoshi , Tanaka Hozumi , Kawahara Takayuki , Sudoh Rokuro 
Published: July 2006

Abstract
Synthesis of methyl 5-azido-3-nitro-2,3,5-trideoxy-β-d-glycero-pent-2-enofuranoside (7) from methyl 5-O-benzoyl-3-deoxy-3-nitro-β-d-xylofuranoside (2) through five steps in 13% overall yield is described. The nitroolefin 7 was treated with hydrazoic acid in the presence of trace of sodium azide, followed by hydrogenation and N-acetylation, to give a diastereoisomeric mixture of four triacetamido furanoside derivatives.
CORE STRUCTURES OF IRON-SULFUR COMPLEXES FROM MAGNETIC CIRCULAR DICHROISM
Authors: Muraoka Tsugufumi , Nozawa Tsunenori , Hatano Masahiro 
Published: July 2006

Abstract
The magnetic circular dichroism (MCD) spectra were measured for the first time on the rebredoxin model iron-sulfur complexes. The bands at around 390 and 490 nm were assigned to Faraday A terms from curve analysis, which indicated effective Td symmetries for the complexes. Furthermore the propriety as the rubredoxin model was discussed on the basis of the MCD spectra.
ACTIVE MOLTEN SALTS CATALYST FOR HYDROCRACKING OF ANTHRACENE
Authors: Kikkawa Shoichi , Nomura Masakatsu , Kubo Toshio , Nakatsuji Yohji 
Published: July 2006

Abstract
It was found that ZnCl2–CuCl melts showed an excellent hydrocracking activity for anthracene compared with that of molten ZnCl2 catalyst in view of increasing the yield of low boiling hydrocracked products. The difference of activities between ZnCl2–CuCl melts and ZnCl2 melts is discussed primarily based on the product distribution.
SYNTHESIS OF [3.3]METACYCLOPHANE
Authors: Shinmyozu Teruo , Inazu Takahiko , Yoshino Tamotsu 
Published: July 2006

Abstract
[3.3]Metacyclophane was synthesized by hydrolysis of tetraethyl [3.3]metacyclophane-2,2,11,11-tetracarboxylate (III), followed by decarboxylative chlorination and reduction. Compound III was obtained by the coupling reaction of m-bis(bromomethyl)benzene (I) and tetraethyl m-diethylbenzene-ω,ω,ω′,ω′ -tetracarboxylate (II) in the presence of sodium hydride as a base under high dilution conditions.
A NOVEL REACTION OF CHLORANIL WITH 1,4-DISUBSTITUTED PIPERAZINEDIONES
Authors: Tanaka Tatsuo 
Published: July 2006

Abstract
Reaction of 1,4-diphenyl-2,6-piperazinedione with chloranil in benzene at refluxing temperature afforded an adduct, 2,4,5,7-tetrachloro-10,12-diphenyl-3,6,9,11-tetraoxo-10,12-diaza-tricyclo[6.3.1.02,7]-4-dodecene, which was formed through dehydrogenation followed by 1,3-dipolar cycloaddition of chloranil to the intermediate mesoionic species. 4-Methyl-1-phenyl-2,6-piperazinedione reacted with chloranil to give a similar adduct.
THE MICHAEL TYPE REACTION OF O-SILYLATED KETENE ACETALS WITH α,β-UNSATURATED CARBONYL COMPOUNDS PROMOTED BY TITANIUM TETRACHLORIDE
Authors: Saigo Kazuhiko , Osaki Masaaki , Mukaiyama Teruaki 
Published: July 2006

Abstract
O-Silylated ketene acetals reacted with α,β-unsaturated carbonyl compounds at −78°C in the presence of TiCl4 or in the coexistence of TiCl4 and Ti(OPr-i)4 to afford the corresponding δ-ketoesters in good yields.
CATIONIC HYDRIDE COMPLEXES OF PALLADIUM
Authors: Moriyama Hiroshi , Saito Taro , Sasaki Yukiyoshi 
Published: July 2006

Abstract
A series of cationic hydride complexes of palladium [PdH(L)(PCy3)2]+BPh4− (PCy3 = tricyclohexylphosphine, L = pyridines, pyrazole and imidazole) have been synthesized from a new palladium hydride complex PdH(NO3)(PCy3)2 and characterized.