bluuebunny/crossref_metadata_2025_split huggingface dataset:
CHEMOSELECTIVE REACTIONS OF ALLYLSILANES WITH 1,1-DIMETHOXYBUTAN-3-ONE AND 1,1-DIMETHOXYPROPAN-2-ONE
Authors: Ojima Iwao , Kumagai Miyoko 
Published: July 2006

Abstract
The reaction of allylsilanes with 1,1-dimethoxybutan-3-one was found to proceed selectively on the acetal moiety regardless of the kind of Lewis acid, while the chemoselectivity of the corresponding reaction with 1,1-dimethoxypropan-2-one was changed dramatically by the sort of Lewis acid employed.
CONVENIENT SYNTHETIC METHODS OF SOME FUNCTIONALIZED INDOLIZINES
Authors: Kakehi Akikazu , Ito Suketaka , Maeda Toshiake , Takeda Ryoichi , Nishimura Masao , Yamaguchi Tetsuya 
Published: July 2006

Abstract
The thermolyses of 2-allylidene-1-ethoxycarbonylmethyl-1,2-dihydropyridines gave the corresponding 3-ethoxycarbonylindolizine with elimination of methylene compounds, and their reactions with acetic anhydride afforded 2-acetoxy-1-ethenylindolizines.
HYDROGEN PEROXIDE OXIDATION OF CYCLOHEXANONE AND CYCLOHEXANONE PEROXIDE IN THE PRESENCE OF SOME METAL OXIDES
Authors: Ishii Yasutaka , Adachi Akihiko , Imai Ryoichi , Ogawa Masaya 
Published: July 2006

Abstract
Cyclohexanone was oxidized to 1-hydroxy-1′-hydroperoxydicyclohexyl peroxide(HHP) by TeO2- and to adipic acid by H2MoO4 and H2WO4. The oxidation products from cyclohexanone. 1-Hydroxy-1-hydroperoxycyclohexane(HHC) was proposed as a reaction intermediate.
LOW TEMPERATURE CONVERSION OF PENTANE WITH ALUMINUM CHLORIDE–METAL SULFATE MIXTURES
Authors: Ono Yoshio , Tanabe Tadashi , Kitajima Nobumasa 
Published: July 2006

Abstract
The mixtures of aluminum chloride and metal sulfate are found to be effective catalysts for the conversion of pentane at low temperatures. For example, when 10 ml of pentane was shaked with the equimolar mixture of AlCl3 and Ti2(SO4)3 (7.5 mmol each) at 28 °C for 3 hr, the pentane conversion of 46 % was obtained with the selectivity to isopentane of 84 %. In the vapor phase conversion, however, the main product was found to be isobutane.
OPTICAL RESOLUTION OF 2-AMINOETHYL-n-BUTYLPHENYLPHOSPHINE AND THE BIS(ACETYLACETONATO)COBALT(III) COMPLEX CONTAINING THE RESOLVED AMINOPHOSPHINE
Authors: Kashiwabara Kazuo , Kinoshita Isamu , Fujita Junnosuke 
Published: July 2006

Abstract
2-Aminoethyl-n-butylphenylphosphine was resolved. A pair of diastereomers of the bis(acetylacetonato)cobalt(III) complex with the resolved aminophosphine was isolated and absolute configurations of the complexes and the aminophosphine were assigned on the basis of the 1H-NMR and circular dichroism spectra of the diastereomers.
β-DIKETONATE DIANION AS A BRIDGING OR C,O-CHELATING LIGAND
Authors: Okeya Seichi , Yanase Norio , Nakamura Yukio , Kawaguchi Shinichi 
Published: July 2006

Abstract
The 2,4-pentanedionate dianion acts as a bridging ligand in [Be(acac)L] and [Pd(acac)L] which were prepared by the reactions of (2,2′-bipyridine)chloro(2,4-pentanedionato-C1 )palladium(II) (HL) with [Be(acac)2] and [Pd(acac)2]. On the other hand the 1,1,1-trifluoro-2,4-pentanedionate dianion is chelating to the metal atom in [Pt(C5H3O2F3)L2′] (L′= PPh3 and AsPh3).
THE PFEIFFER EFFECT WITH A DISSYMMETRIC METAL COMPLEX AS AN ENVIRONMENT SUBSTANCE. II. POSSIBILITY TO PREDICT THE ABSOLUTE CONFIGURATION OF METAL COMPLEXES
Authors: Wada Yoshiaki , Miyoshi Katsuhiko , Yoneda Hayami 
Published: July 2006

Abstract
The chiral equilibrium of [Cr(ox)3]3− was found to be displaced in favor of its Δ-enantiomer when its racemate was mixed with the Λ-enantiomers of several complexes of the type cis-[Co(en)2(X)(Y)]n+ in dioxane-water mixtures. It was proposed that the Pfeiffer effect is useful to infer the absolute configuration of these Co(III) complexes.
COPPER-CATALYZED AMINATION OF α-SUBSTITUTED ANTHRAQUINONES
Authors: Yoshida Katsuhira , Matsuoka Masaru , Ueyama Tamio , Yamashita Yoshio , Kitao Teijiro 
Published: July 2006

Abstract
The reaction of 1-aminoanthraquinone with large excess of butylamine in the presence of various copper salts gave 1-amino-4-butylaminoanthraquinone in 15–40% yield. 1,4-Dihydroxyanthraquinone was also aminated at β-position in the same condition. Nucleophilic amination catalyzed with the copper salts of α-substituted anthraquinones was proposed.
A NEW METABOLITE, ASPERMUTARUBROL, FROM ASPERGILLUS SYDOWI
Authors: Shibata Kozo , Kamikawa Tadao , Kaneda Norimasa , Taniguchi Makoto 
Published: July 2006

Abstract
A new phenolic metabolite, aspermutarubrol, was isolated from Aspergillus sydowi and bis(5-methyl-2,3-dihydroxyphenyl) ether was assigned to this substance from the spectroscopic evidence and the synthesis of its tetramethyl ether.
SYNTHESIS AND PHOTOISOMERIZATION OF “MINI-β-CAROTENES”
Authors: Gapski George , Kini Aravinda , Liu R S H 
Published: July 2006

Abstract
The trans triene obtained from coupling of cyclocitral can be converted photochemically, quantitatively to the hindered cis isomer. But, the two isomers of the pentaene obtained from coupling of β-ionone were found to interconvert under selective sensitization but not to give the hindered 7-cis isomers.
NOVEL MIGRATION OF METHYL GROUP OF 6,10,10-TRIMETHYL-4-OXOTRICYCLO[4.4.0.01,3]DECANE WITH BORON TRIFLUORIDE IN ACETIC ACID-ACETIC ANHYDRIDE
Authors: Sekizaki Haruo , Ito Masaaki , Inoue Shoji 
Published: July 2006

Abstract
6,10,10-Trimethyl-4-oxotricyclo [4.4.0.01,3] decane 1 undergoes migration of one of the gem-dimethyl group on treatment with boron trifluoride in acetic acid-acetic anhydride giving the acetates (2) and (3).
CO-PYROLYSIS OF 1,2-DICHLOROPROPANE AND METHANOL ON ACTIVATED ALUMINA
Authors: Shinoda Kiyonori 
Published: July 2006

Abstract
The co-pyrolysis of 1,2-dichloropropane (DCP) and methanol on activated alumina was carried out at 270°C. The reaction products contained a significant amount of oxygen-containing compounds as well as the ordinary pyrolysis compounds. The formation of acetone and acrolein increased as a function of the time factor.
QUANTITATIVE OZONE-OXIDATION OF TRYPTOPHAN TO N′-FORMYLKYNURENINE AND KYNURENINE
Authors: Sakiyama Fumio , Masuda Nobuhito , Nakazawa Takashi , Katsuragi Yasuhiro 
Published: July 2006

Abstract
Tryptophan was quantitatively oxidized to kynurenine or N′-formylkynurenine on methanolic ozonization and subsequent reduction of the ozonization product, which was identified as N′-methoxyhydroperoxymethylkynurenine by carbon-13 NMR spectroscopy. With dimethyisulfide this peroxidic intermediate was usually reduced to N′-formylkynurenine, but in the acidic condition it was converted to kynurenine.
A CONVENIENT PROCEDURE FOR THE TRANSFORMATION OF ALCOHOLS TO OLEFINS AND ALKYL CHLORIDES
Authors: Liu Hsing-Jang , Chan Wing Hong , Lee Sing Ping 
Published: July 2006

Abstract
Treatment of 1° alcohols with N,N-dimethylphosphoramidic dichloride in refluxing 1,2-dimethoxyethane gave the corresponding chlorides. Upon similar treatment, 3° alcohols underwent dehydration giving olefinic products, whereas 2° alcohols afforded olefins or chlorides as predominant products.
QUENCHING OF THE BENZENE FLUORESCENCE BY PYRIMIDINE IN CYCLOHEXANE
Authors: Tsukada Masao , Omura Itaru 
Published: July 2006

Abstract
Studies were made on the quenching of the benzene fluorescence excited with 254 nm radiation by pyrimidine in cyclohexane. The value of quenching constant is larger by a factor of 7 than that expected for diffusion-controlled process.
[2 + 2] CYCLODIMERIZATION OF N-VINYLCARBAZOLE IN ACETONE UNDER THE CONDITION OF SINGLET OXYGEN REACTION
Authors: Nishimoto Sei-ichi , Kagiya Tsutomu 
Published: July 2006

Abstract
In the presence of singlet molecular oxygen generated by means of the microwave discharge or the decomposition of triphenyl phosphite ozonide, N-vinylcarbazole was converted to trans-1,2-dicarbazylcyclobutane in good yields in acetone solution.
CIRCULAR DICHROISM AND STEREOCHEMISTRY OF OPTICALLY ACTIVE BIS(DIAMINE)DINITRITOCHROMIUM(III) COMPLEXES
Authors: Kaizaki Sumio , Shimura Yoichi 
Published: July 2006

Abstract
From the CD spectra in the region of an intraligand absorption band localized on nitrito ligands of Λ-cis-[Cr(ONO)2(en)2]ClO4, trans-[Cr(ONO)2(R-pn)2]ClO4, and trans-[Cr(ONO)2(R,R-ptn)2]ClO4, where R-pn and R,R-ptn are (R)-propylenediamine and (R,R)-2,4-pentanediamine, respectively, the chirality due to the rotational isomerism of the unidentate nitrito ligands has been substantiated and its stereochemical implications have been discussed.
ELECTROPHILIC SUBSTITUTION OF BENZENES WITH STRONG ELECTRON-WITHDRAWING GROUPS IN SUPER ACID MEDIA. FRIEDEL-CRAFTS ALKYLATION OF ACETOPHENONE
Authors: Yoneda Norihiko , Fukuhara Tsuyoshi , Takahashi Yukio , Suzuki Akira 
Published: July 2006

Abstract
In the presence of HF-SbF5 super acid, the alkylation of acetophenone with various alkyl chlorides was investigated. The products were found to be those of m-alkylated acetophenone derivatives and their related compounds in fairly good yields. The relative reactivity of alkyl chlorides was in the order of EtCl&gt;n-, iso-PrCl, n-, s-BuCl&gt;&gt;iso-BuCl&gt;&gt;t-BuCl. The formation of olefinic, alcoholic, and condensation products observed in the reaction with propyl chlorides, and skeletal isomerization products obtained in the reaction with butyl chlorides was also discussed.
TOTAL SYNTHESIS OF METHYNOLIDE: SYNTHESIS OF TWO INTERMEDIATES, 3,4-DIACETOXY-3-METHYL-1-HEXYNE AND PRELOG-DJERASSI LACTONIC ACID
Authors: Nakano Akio , Takimoto Seiji , Inanaga Junji , Katsuki Tsutomu , Ouchida Shuichi , Inoue Kazutaka , Aiga Makoto , Okukado Nobuhisa , Yamaguchi Masaru 
Published: July 2006

Abstract
(+)-3,4-Diacetoxy-3-methyl-1-hexyne and (+)-Prelog-Djerassi lactonic acid were synthesized as the starting materials for the total synthesis of methynolide.
STEREOCHEMICAL FEATURES OF THE [2,3]SIGMATROPIC REARRANGEMENT OF DITHIOCARBENES
Authors: Nakai Takeshi , Mikami Koichi 
Published: July 2006

Abstract
The [2,3]sigmatropic rearrangement of dithiocarbenes has been demonstrated to proceed with high level of stereoselectivity favoring the trans geometry of the newly formed double bond and with low level of asymmetric induction across the convex face of cyclohexylidene ring system.
SOLID-STATE CIRCULAR DICHROISM SPECTRA OF COBALT(III) COMPLEXES MEASURED BY A NUJOL MULL METHOD
Authors: Taniguchi Yutaka , Shimura Yoichi 
Published: July 2006

Abstract
Circular dichroism spectra of cobalt(III) complexes in microcrystalline states were measured by a Nujol mull method. The principle of this method was briefly outlined. The reproducibility and features of the spectra obtained were discussed.
A NEW MACROCYCLIC SESTERTERPENE ACID FROM CEROPLASTES CERIFERUS
Authors: Kusumi Takenori , Kinoshita Takeshi , Fujita Ken-ichi , Kakisawa Hiroshi 
Published: July 2006

Abstract
From the wax of Ceroplastes ceriferus, a scale insect, a new macrocyclic sesterterpene, designated as ceriferic acid, was isolated, and its structure was elucidated as albocera-2(E),6(E),10(E),15(E),18-pentaen-25-oic acid.
THE STRUCTURES OF OHCHINOLIDE A AND B, TWO NEW LIMONOIDS FROM MELIA AZEDARACH LINN. VAR. JAPONICA MAKINO
Authors: Ochi Masamitsu , Kotsuki Hiyoshizo , Ido Mitsuhiro , Nakai Hiroshi , Shiro Motoo , Tokoroyama Takashi 
Published: July 2006

Abstract
Two new limonoids, ohchinolide A and B, have been isolated from the fruit of M. azedarach Linn. var. japonica Makino and their structures established to be 1 and 2 by spectral correlations and an X-ray diffraction method.
ANODIC CHARACTERISTICS OF Fe-SUPPORTED Co3O4 ELECTRODES IN ALKALINE SOLUTION
Authors: Honji Akio , Iwakura Chiaki , Tamura Hideo 
Published: July 2006

Abstract
Fe-supported Co3O4 electrodes were prepared by the thermal decomposition method and their anodic characteristics were studied in 1M KOH solution. As a result, it was found that the electrodes prepared at relatively low temperatures have very attractive properties as an anode for oxygen evolution.
NUCLEOSIDE 3′-PHOSPHOTRIESTERS AS KEY INTERMEDIATES FOR THE OLIGORIBONUCLEOTIDES SYNTHESIS VIA PHOSPHOTRIESTER APPROACH
Authors: Takaku Hiroshi , Nomoto Tadaaki , Sakamoto Yukimi , Hata Tsujiaki 
Published: July 2006

Abstract
5′-O-Dimethoxytrityl 2′-O-tetrahydropyranyl nucleoside 3′-(2-cyanoethyl, 5-chloro-8-quinolyl) phosphates (3) were obtained in good yields by treating 5′-O-dimethoxytrityl 2′-O-tetrahydropyranyl nucleosides (1) with 5-chloro-8-quinolyl phosphate and 8-quinolinesulfonyl chloride (QS) followed by addition of 2-cyanoethanol. The compound 3 is a key intermediate for the oligoribonucleotide synthesis by the improved triester method.
SYNTHESIS OF (−)-TAYLORIONE, A SESQUITERPENE KETONE OF ENT-1,10-SECO-AROMADENDRANE SKELETON
Authors: Nakayama Mitsuru , Ohira Susumu , Shinke Shuzo , Matsushita Yoichi , Matsuo Akihiko , Hayashi Shûichi 
Published: July 2006

Abstract
(−)-Taylorione, ent-1,10-seco-aromadendra-l(5),4(15)-dien-10-one, was synthesized from (+)-Δ3-carene via (−)-2-[3-(3-hydroxybutyl)-2,2-dimethylcyclopropyl]-2-cyclopenten-l-one as a key intermediate.
THE ADDITION REACTION OF METALATED 2-ALLYLOXYBENZIMIDAZOLES TO ALDEHYDES AND THE TRANSFORMATION OF THE ADDUCTS TO VINYLOXIRANES
Authors: Yamaguchi Masahiko , Mukaiyama Teruaki 
Published: July 2006

Abstract
Treatment of 2-allyloxybenzimidazoles with butyllithium followed by cadmium iodide generates the metalated allylic ethers, which in turn react with aldehydes to form adducts selectively at α-carbon of the allylic ethers. The adducts are converted to vinyloxiranes in good yields on treatment with sodium hydride.
VICINAL DEHYDROBROMINATION OF (α-BROMOVINYL)CHLOROSILANES WITH QUINOLINE. A NEW ROUTE TO ETHYNYLCHLOROSILANES
Authors: Matsumoto Hideyuki , Kato Takayuki , Matsubara Ikuya , Hoshino Yoshikazu , Nagai Yoichiro 
Published: July 2006

Abstract
(α-Bromovinyl)chlorosilanes of the type CH2=CBrSiRnCl3−n(R = Me, Et; n = 0, 1, 2) were found to be dehydrobrominated with quinoline yielding the corresponding ethynylchlorosilanes.
THE REACTION OF ARYL METHYL SULFIDES WITH ALKYL METHANESULFONATES. A KINETIC STUDY FOR THE SULFONIUM SALT FORMATION
Authors: Kozuka Seizi , Taniyasu Shigeru , Kikuchi Akihiko , Ogino Kenji 
Published: July 2006

Abstract
A kinetic study has been carried out for the reaction of aryl methyl sulfides with alkyl methanesulfonates giving sulfonium salts. Activation parameters, substituent and steric effects were examined.
PHOTOOXYGENATION OF FLAVANONOL-RED RELATED COMPOUNDS
Authors: Shibata Kozo , Ichikawa Nobutaka , Kubota Takashi 
Published: July 2006

Abstract
Photooxygenation of 6-phenyl-5,7-dioxa-benz[a]anthracene in ethanol followed by recrystallization from ethanol resulted in the formation of a diethoxy compound by unusual addition of two ethoxyl groups to a C–C double bond. While, recrystallization of the photooxygenation product from methanol afforded a monoethoxy monomethoxy compound.
AN EFFICIENT METHOD FOR THE SYNTHESIS OF PEPTIDES BY THE USE OF PHENYLPHOSPHONIC ESTERS
Authors: Mukaiyama Teruaki , Morito Naoya , Watanabe Yutaka 
Published: July 2006

Abstract
Treatment of the tetrabutylammonium salt of N-benzoyl-l-leucine and glycine ethyl ester with bis(o- or p-nitrophenyl) phenylphosphonate in DMF resulted in the formation of the corresponding dipeptide in excellent yield with high optical purity. Similarly, racemization-free Z-l-Phe-Gly-OEt was prepared in high yield.
HYDROLYSIS OF CARTHAMIN
Authors: Onodera Jun-ichi , Saito Takashi , Obara Heitaro 
Published: July 2006

Abstract
2,5-Bis(p-methoxycinnamoyl)-1,3,4,6,7,8-, and 2,7-bis(p-methoxycinnamoyl)-1,3,4,5,6,8- or 4,5-bis(p-methoxycinnamoyl)-1,2,3,6,7,8-hexamethoxyxanthen (8, and 9 or 10) were obtained by the methylation of the hydrolysis products of carthamin. The structure of 8 was confirmed by the direct comparison with a synthetic sample. The formation process of 8, and 9 or 10 is discussed.
REACTIONS OF ALLYL PHENYL AND DIALLYL ETHERS WITH Ni(cod)2 IN THE PRESENCE OF PHOSPHINE LIGANDS WITH AND WITHOUT C–O BOND CLEAVAGE. PREPARATION OF Ni(η3-C3H5)(OC6H5)(PPh3) BY THE OXIDATIVE ADDITION OF ALLYL PHENYL ETHER TO NICKEL AND PREPARATION OF Ni(π-DIALLYL ETHER)(PR3)
Authors: Yamamoto Takakazu , Ishizu Junichi , Yamamoto Akio 
Published: July 2006

Abstract
The reaction of allyl phenyl ether with a mixture of bis (1,5-cyclooctadiene)nickel and PPh3 leads to the oxidative addition of the ether involving the PhO–C bond cleavage to afford Ni(η3-C3H5)(OC6H5)(PPh3) 1. Similar reactions of diallyl ether with Ni(cod)2 in the presence of PR3 (R = C6H5, cyclo-C6H11) give uncleaved π-type complexes formulated as Ni(π-allyl ether)(PR3).
RESONANCE RAMAN SPECTRA OF CHLORANIL ANION RADICAL DIMERS
Authors: Matsuzaki Susumu , Mitsuishi Tetsuya , Etoh Chisumi , Toyoda Koichi 
Published: July 2006

Abstract
Two resonant lines were observed in the Raman spectra of chloranil anion radical dimers with exciting radiation close to the CT band, and were assigned to inter-radical stretching vibrations. The change of the relative intensity of these lines depending on counter ions was attributed to the formation of two different dimers.
INFRARED AND RAMAN INVESTIGATION OF THE STRUCTURAL BEHAVIOUR OF THE S2O3= ION IN CADMIUM THIOSULFATE DIHYDRATE, CdS2O3·2H2O (1)
Authors: Gabelica Zélimir 
Published: July 2006

Abstract
Solid state infrared and Raman spectra of cadmium thiosulfate dihydrate, CdS2O3·2H2O,have been examined. The splittings and the shifts of the internal frequencies of the coordinated S2O3 anions were found to characterize bridging thiosulfate groups binding two cadmium ions through the external sulfur atom.
CYCLOADDITION REACTION OF BENZOCYCLOPROPENE WITH AROMATIC NITRILE OXIDES: A SYNTHETIC ENTRY INTO A BRIDGED OXAZONINE
Authors: Nitta Makoto , Sogo Shoji , Nakayama Tadashi 
Published: July 2006

Abstract
9-Aryl-7-oxa-8-azatricyclo[4.3.1.0]deca-2,4,8-trienes (Ia and Ib) were synthesized by the cycloaddition reaction of benzocyclopropene with benzonitrile oxide and mesitonitrile oxide, respectively. The closed norcaradiene structures were preferable to the opened bridged oxazonine isomers in the range of 25–120°C.
SYNTHESIS OF ALKYL- OR ARYL-SUBSTITUTED HETELOCYCLES: NICKEL COMPLEX CATALYZED COUPLING REACTION OF HETEROCYCLIC SULFIDES AND THIOLS WITH GRIGNARD REAGENTS
Authors: Takei Hisashi , Miura Morikazu , Sugimura Hideyuki , Okamura Hisashi 
Published: July 2006

Abstract
Heterocyclic sulfides and thiols react with Grignard reagents in the presence of NiCl2(Ph2PCH2CH2CH2PPh2) to afford the cross-coupling products in high yields. The reaction of 2,2′-dipyridyl disulfide with 3-phenylpropylmagnesium bromide is also described.
ESTERIFICATION WITH MIXED ANHYDRIDE ACTIVATED BY INTRAMOLECULAR CYCLIZATION
Authors: Horimoto Hideaki , Takimoto Seiji , Katsuki Tsutomu , Yamaguchi Masaru 
Published: July 2006

Abstract
Mixed anhydrides, prepared from α-bromo-o-toluoyl bromide and carboxylic acids, were activated by an intramolecular cyclization when heated in the presence of alcohols, giving the corresponding carboxylic esters in good yield with the elimination of phthalide.
A CONVENIENT PREPARATION OF 2-SUBSTITUTED 2-CYCLOPENTENONES FROM CYCLOPENTANONE USING 2-(MORPHOLINOTHIO)BENZOTHIAZOLE
Authors: Torii Sigeru , Tanaka Hideo , Kudai Toshihiro , Watanabe Sinichi 
Published: July 2006

Abstract
2-Substituted 2-cyclopentenones (4), a precursor of jasmonoids, were prepared in 47–77% overall yields from cyclopentanone (1) via 2-(2-benzothiazolylthio)cyclopentanone (2). Treatment of 1 with 2-(morpholinothio) benzothiazole gave 2 in 98% yield. Alkylation of 2 with RBr–K2CO3–KI–acetone followed by removal of the 2-mercaptobenzothiazole by thermolysis in benzene containing p-TsOH at 140 °C afforded (4) smoothly.
COMPLEX FORMATION ENTHALPIES OF TETRANACTIN WITH ALKALI IONS IN METHANOL
Authors: Ueno Masaharu , Kishimoto Hiroshi 
Published: July 2006

Abstract
The enthalpies of complex formation of tetranactin with alkali ions in methanol were measured by a micro-calorimeter. The enthalpies were mostly determined by conformational energies of complexes and solvation enthalpies of ions. The minimum enthalpy was observed for potassium ion complex. This tendency coincided with the ion selectivity of tetranactin.
3,3,7,7-BIS-(10′-METHYL-9′,9′-ACRIDANYL)-1,2,5,6-TETRAOXOCANE, A DIOXETANE DIMER, FROM THE REACTION OF 10-METHYL-9-METHYLENE-9,10-ACRIDANE WITH SINGLET OXYGEN
Authors: White Emil H , Suzuki Nobutaka , Hendrickson William H 
Published: July 2006

Abstract
The methylene blue sensitized oxygenation of 10-Methyl-9-methylene-9,10-acridane (MMA) at −78°C yields three chemiluminescent compounds. The most stable compound, with a half-life at 0° of 15 min, is 3,3,7,7-bis-(10′-methyl-9′,9′-acridanyl)-1,2,5,6-tetraoxocane, a dioxetane dimer. The most unstable compound, with a half-life at −60°C of 2 min, is believed to be the dioxetane of MMA. The compound of intermediate stability, with a half-life at −20°C of 5 min, is believed to be the zwitterion form of the ring opened dioxetane stabilized by a hydrogen bond to water (or, by choice, to some other weak acid).
SYNTHESES OF 24,25-DIDEOXY-FASCICULOL-A AND FASCICULOL-A, CONSTITUENT OF NAEMATOLOMA FASCICULARE (FR.) KARST, A POISONOUS BITTER MUSHROOM
Authors: Kikuchi Tohru , Kanaoka Matao , Hanagaki Sayaka , Kadota Shigetoshi 
Published: July 2006

Abstract
24,25-Dideoxy-fasciculol-A, fasciculol-A and its C-24 epimer were synthesized from lanosterol and the absolute stereo-structure of fasciculol-A was confirmed.
MICROBIAL STEREODIFFERENTIATING REDUCTION OF (±)-4-METHYL-1-OXO[2.2]METACYCLOPHANE AND REVISION OF THE ABSOLUTE CONFIGURATION OF 4-SUBSTITUTED [2.2]METACYCLOPHANES
Authors: Nakazaki Masao , Hirose Yoshiki , Shimizu Toru , Suzuki Takaaki , Ishii Akira , Makimura Masaru 
Published: July 2006

Abstract
The (−)-Cotton effect indicates (pS)-configuration to (−)-4-methyl-1-oxo[2.2]metacyclophane (17) which was isolated from a culture solution of (±)-14 with Rhodotorula rubra, and the conversion of (−)-17 to (+)-4-methyl[2.2]metacyclophane (21) via 19 assigns (pR)-configuration to (+)-21, contrary to Schlögl’s proposal.
SPINNING GLASS CELL FOR HIGH-PRESSURE HIGH-RESOLUTION NMR MEASUREMENTS
Authors: Yamada Hiroaki , Fujino Kazuhiko , Nakatsuka Masakatsu , Sera Akira 
Published: July 2006

Abstract
A simple device for a spinning high-pressure glass cell eliminated the use of a hand pump and a Bourdon gauge in performing the high-pressure high-resolution NMR. Internal rotation of a substituted triazene has been examined in a dilute solution up to 3000 bars at 35°C.
SYNTHESIS OF NEW MACROCYCLIC COPPER(II) COMPLEX DERIVED FROM METHYL VINYL KETONE AND COPPER(II) COMPLEX OF N-SUBSTITUTED DIAMINE
Authors: Makino Tadashi , Hata Kazuyuki , Saburi Masahiko , Yoshikawa Sadao 
Published: July 2006

Abstract
A new macrocyclic copper(II) complex was prepared by condensation reaction between methyl vinyl ketone and bis(3-(S)-ahaz)copper(II) complex (3-(S)-ahaz; 3(S)-3-aminohexahydroazepine). Sodium Borohydride could reduce the C=N bonds of the condensation product to a saturated mcrocyclic tetramine copper(II) complex.
SYNTHESIS AND REACTION OF 3-METHYLENE-2,3-DIHYDROINDOLIZIN-2-ONE
Authors: Kakehi Akikazu , Ito Suketaka , Nakanishi Kazunori , Kitagawa Masahiko 
Published: July 2006

Abstract
The alkaline treatment of 1-[1-ethoxycarbonyl-2,2-bis(ethylthio)ethenyl]-2-ethylpyridinium iodide in chloroform gave the corresponding self-condensation product, 1-methyl-3-[1,1-bis(ethylthio)methylene]indolizin-2-one, in good yield, and the reaction of the indolizinone with ethyl cyanoacetate in the presence of triethylamine afforded 2-cyano-1-ethylthio-5-methyl-3-oxo-3H-pyrano[2,3-b]indolizine in 34% yield.
THE STRUCTURE OF BIS (O,O′-DIMETHYL DITHIOPHOSPHATO) (TRIPHENYLPHOSPHINE)COBALT(II)
Authors: Shimoi Mamoru , Ouchi Akira , Sato Shoichi , Saito Yoshihiko 
Published: July 2006

Abstract
The crystal and molecular structure of the title complex has been determined by X-ray diffraction. It is a distorted trigonal-bipyramidal complex: each dithiophosphato ligand spanns an oblique edge of the coordination polyhedron, and triphenylphosphine occupies the fifth coordination site with unusually long Co–P bond length of 2.551 Å.