bluuebunny/crossref_metadata_2025_split huggingface dataset:
DIELS–ALDER REACTION OF SUBSTITUTED MALEIC ANHYDRIDES WITH 1-VINYLCYCLOHEXENE AN APPROACH TO THE SYNTHESES OF CLERODANE DITERPENES
Authors: Matsuo Keizo , Tokoroyama Takashi , Kubota Takashi 
Published: July 2006

Abstract
In an attempt to construct stereospecifically the clerodane skeleton, the Diels–Alder reactions of 1-vinylcyclohexene with aconitic, citraconic and chloromethylmaleic anhydrides have been undertaken and the configurations of the adducts are deduced. The product from the reaction with the last compound is found to be a potential intermediate for the syntheses of clerodane diterpenes.
HELIX-COIL TRANSITION OF POLY-α,l-GLUTAMIC ACID IN AQUEOUS SOLUTION STUDIED BY THE DISSOCIATION FIELD EFFECT RELAXATION METHOD
Authors: Yasunaga Tatsuya , Sano Takayuki , Takahashi Kojiro , Takenaka Hidetoshi , Ito Satoshi 
Published: July 2006

Abstract
The measurements of dissociation field effect relaxation in aqueous poly-α,l-glutamic acid were carried out. From the feature of pH dependency of relaxation time, the observed relaxation was attributed to the helix-coil transition. The helical growth rate constant was calculated to be (2.9±2)×107 sec−1 from Schwarz’s equation.
IONIZATION POTENTIALS OF ANTHRACENE
Authors: Aihara Jun-ichi , Inokuchi Hiroo 
Published: July 2006

Abstract
From the observation of the breaks of the photoionization efficiency curve (PIE) of molecular anthracene in the vacuum ultraviolet wavelength region, the higher ionization potentials could be estimated.
In comparison with the photoelectron spectroscopical data, we could better assign the breaks of PIE to the σ-orbitals of the molecule.
A NEW SYNTHESIS OF BULLATENONE
Authors: Takeda Akira , Tsuboi Sadao , Sakai Takashi 
Published: July 2006

Abstract
Bullatenone (IIIa) and its homologs substituted at p- and m- positions in the benzene ring have been prepared by the decarboxylative hydrolysis of ethyl 2,3-dihydro-2,2-dimethyl-3-oxo-5-arylfuran-4-carboxylates (I), which were obtained by the reaction of α-bromoisobutyryl bromide and ethyl sodioaroylacetate.
9,10,13-TRIHYDROXYOCTADECANOIC ACID, A NEW FATTY ACID IN THE ROOTS OF KIDNEY BEAN (PHASEOLUS VULGARIS L., “BENI-KINTOKI”)
Authors: Takasugi Mitsuo , Kobayashi Kiroku , Anetai Masaki , Ueno Shoji , Katsui Nobukatsu , Masamune Tadashi 
Published: July 2006

Abstract
A new fatty acid was isolated from the roots of kidney bean and identified as 9,10,13-trihydroxyoctadecanoic acid. The hatching stimulating activity to the soybean cyst nematode is also discussed.
VINYL POLYMERIZATION. 303. MEASUREMENT OF THE INITIATION RATE OF THE POLYMERIZATION OF METHYL METHACRYLATE BY THE SYSTEM OF SOLUBLE STARCH, WATER, AND CARBON TETRACHLORIDE
Authors: Imoto Minoru , Ree Keiu , Ouchi Tatsuro 
Published: July 2006

Abstract
The polymerization of methyl methacrylate initiated with soluble starch, water, and carbon tetrachloride was carried out without shaking. The rate of initiation was measured, using hydroquinone as an inhibitor, and was found to be proportional to the concentration of starch in the water phase.
OXIDATION OF 2,5-BIS(p-CHLOROPHENYL)-3,6-DIPHENYL-1,2,4,5-TETRAAZAPENTALENE AND SOME PROPERTIES OF THE PRODUCTS
Authors: Matsumoto Akira , Lee Joung Hee , Yoshida Masayuki , Simamura Osamu 
Published: July 2006

Abstract
The title compound (I) was oxidized to give 3-benzoyl-1-p-chlorophenyl-4-p-chlorophenylazo-5-phenylpyrazole (II) and 3-benzoyl-1-p-chlorophenyl-4-p-chlorophenylazoxy-5-phenylpyrazole (III), both of which underwent trans to cis isomerization on irradiation with ultraviolet light.
THE TRIPLET DIMER Of M-DINITROBE’NZENE ANION RADICALS ADSORBED ON MAGNESIUM OXIDE
Authors: Iizuka Tokio 
Published: July 2006

Abstract
The formation of the triplet state m-dinitrobenzene anion radical dimer adsorbed on magnesium oxide was observed at room temperature by means of visible and electron spin resonance spectroscopies. The amount of formed dimers could be controlled by pre-heat-treatment time of the oxide and remarkably decreased on adsorption after the calcination in air.
SELECTIVE FORMYLATION OF 9-SUBSTITUTED 2-METHOXYANTHRACENES
Authors: Iwata Masaaki , Emoto Sakae 
Published: July 2006

Abstract
Formylation of 9-substituted 2-methoxyanthracenes with N-methylformanilide and phosphorus oxychloride gave its 1-formyl derivatives, while with N-methylformanilide and n-butyllithium it afforded the corresponding 3-formyl derivatives.
A CONVENIENT SYNTHESIS OF DINUCLEOTIDES BY OXIDATION-REDUCTION CONDENSATION USING NUCLEOSIDE 5′ -PHOSPHORODIANILIDATES
Authors: Hashimoto Mitsunori , Mukaiyama Teruaki 
Published: July 2006

Abstract
5′-Phosphorodianilidates of various N-protected nucleoside were prepared from the N-protected 5′-deoxyribomononucleotides (e.q., d-pABz-OAc) and aniline with coupling reagents, triphenylphosphine and 2,2′-dipyridyl disulfide, in yields ranging from 60 to 65%. The phosphorodianilidates were condensed with suitably protected mononucleotides by the above mentioned oxidation-reduction condensation to afford the dinucleotide phosphorodianilidate, such as (Remark: Graphics omitted.)d-pABzpCAn, (Remark: Graphics omitted.)d-pTpT, (Remark: Graphics omitted.)d-pABzpT in yields ranging from 50 to 75%. The phosphorodianilidates were successfully converted to the corresponding parent 5′-phosphate by treatment with isoamylnitrite.
REACTION OF ALKYLPHENYLACETYLENES WITH THALLIUM(III) ACETATE
Authors: Uemura Sakae , Sohma Kazuhiro , Tara Hideyuki , Okano Masaya 
Published: July 2006

Abstract
The reaction of alkylphenylacetylenes with thallium(III) acetate in acetic acid under mild conditions (at 60–70°C for 1 hr) afforded a mixture of two isomeric acetoxythallated compounds in good yields. The hydrodethallation of these products to give the corresponding vinyl acetates was accomplished with boiling acetic acid.
CYCLIC DIMER OF 1,2-DIBENZOYLACETYLENE
Authors: Tsutsui Minoru , Hrung Yang-chin , Francis James N , Harasawa Kenji 
Published: July 2006

Abstract
1,2-dibenzoylacetylene has been found to be cyclodimerized and rearranged thermally. Similar products have been obtained from the bis-para- chloro and bis-para-bromo benzoyl acetylenes. The proposed structure which we believe proceeds via a cyclobutadiene intermediate is shown in the figure.
THEORETICAL CALCULATIONS OF MEAN POLARIZABILITY DERIVATIVES WITH RESPECT TO INTERNAL SYMMETRY COORDINATE
Authors: Shinoda Hiroyuki , Miyazaki Tomoo 
Published: July 2006

Abstract
The CNDO/2 calculation has been applied to the mean polarizability derivatives, (Remark: Graphics omitted.) and (Remark: Graphics omitted.), where α is the mean polarizability and Sj an appropriate symmetry coordinate. The calculated (α′)’s were proportional to the observed values. The α″⁄α′ ratio increased with the energy-increase of the incident light.
CALCULATION OF THE RELATIVE LEWIS ACIDITIES OF THE GROUP IV TETRAHALIDES
Authors: Ito Osamu , Hatano Masahiro 
Published: July 2006

Abstract
The order of the formation energies of the adducts between one Lewis base and the group IV tetrahalides calculated by the extended Hückel method agreed with the observed relative Lewis acidities. The Lewis acidities of the group IV tetrahalides are governed by both the steric factor and the electronic factor.
NOVEL SYNTHESIS OF NITRILES FROM AMIDES BY REACTION WITH PHOSPHOROUS TRIS(DIETHYLAMIDE)
Authors: Sodeyama Touru , Kodomari Mitsuo , Itabashi Kunio 
Published: July 2006

Abstract
Benzamide was allowed to react with phosphorous tris(diethylamide) P(NEt2)3 under reflux in THF, and benzonitrile was obtained in good yield. Under the same condition, acetamide, nicotinamide, and thiobenzamide also reacted with P(NEt2)3 to give the corresponding nitriles respectively. Similar reaction with triethyl phosphite did not occur.
PRESSURE EFFECT ON OPTICAL SPECTRA AND ELECTRICAL RESISTIVITY OF SOME Pt-COMPLEXES
Authors: Hara Yoji , Shirotani Ichimin , Minomura Shigeru 
Published: July 2006

Abstract
K2Pt(CN)4·3H2O , MgPt(CN)4·7H2O and BaPt(CN)4·4H2 exhibit an anomalously large red shift both of the absorption and luminescence spectra with hydrostatic pressure and a continuous decrease of the electrical resistivity by a factor of approximately 10−4 up to 180 kbar.
LAYERED COMPOUNDS. XII. [2.2]PARACYCLO- AND [2.2] (1,4)NAPHTHALENO-ANTHRACENOPHANES
Authors: Iwama Akio , Toyoda Toshihiro , Otsubo Tetsuo , Misumi Soichi 
Published: July 2006

Abstract
[2.2]Paracyclo-(9,10)- and -(1,4)-anthracenophanes (I and II) and [2.2](1,4)naphthaleno(9,10)anthracenophane (III) have been synthesized and it is noted on the basis of their electronic spectra that in either paracyclo- or naphthaleno-anthracenophane, there is more appreciable transannular interaction in 9,10-bridged system than in 1,4-bridged one.
SYNTHESIS OF AMINO-DEOXY CELLULOSE
Authors: Cho Hwan , Teshirogi Takuma , Sakamoto Munenori , Tonami Hiroaki 
Published: July 2006

Abstract
Amino-deoxy cellulose of up to 3 % nitrogen content was synthesized by a new method in which cellulose pyridinium sulfate was treated with ammonia in ethanol under mild conditions.
LASER EXCITED RAMAN SPECTRA OF β-HYDROQUINONE CONTAINING THE GUEST MOLECULE OF ACETONITRILE
Authors: Fukushjma Kunio 
Published: July 2006

Abstract
Laser excited Raman spectra of β-hydroquinone clathrate of acetonitrile and α-hydroquinone in their crystalline state were observed. The Raman band at 96 cm−1 for the β-hydroquinone was assigned to the rotational vibration of the guest molecule, and remarkable difference was found between the Raman spectra of the β-hydroquinone and α-hydroquinone.
FORMATION OF CUBIC MOLYBDENUM CARBIDE BY THE CARBONIZATION OF MoO3 WITH PLASMA ARC
Authors: Matsumoto Osamu , Saito Michio , Ohtsuki Satoru 
Published: July 2006

Abstract
The formation of cubic molybdenum carbide (α-MoC1−x) by the carbonization of MoO3 with plasma arc was studied. α-MoC1−x including small amounts of hexagonal η-MoC1−x was formed. By the carbonization of the mixture of MoO3 and TiO2 the cubic solid solution of Mo–Ti–C system was formed. These products were superconductors.
SELECTIVE OXIDATION OF p-ALKYLPHENOLS WITH TETRAPEROXYMOLYBDATE, [Mo(O2)4]=:A PREPARATIVE METHOD OF A DIENONE HYDROPEROXIDE
Authors: Hayashi Yuji , Shioi Shunsuke , Togami Masatoshi , Sakan Takeo 
Published: July 2006

Abstract
p-Alkylphenols (I), on oxidation with tetraperoxymolybdate, give a dienone hydroperoxide (II) of p-quinol type in high yield. The practice and some limitations are described.
A FACILE ROUTE TO MACROCYCLIC KETONES. DIRECT DIVINYLATION OF 2-CHLOROCYCLODODECAN-1-ONE
Authors: Nishino Masaki , Kondo Hisao , Miyake Akihisa 
Published: July 2006

Abstract
The reaction of 2-chlorocyclododecan-1-one with vinylmagnesium chloride (molar ratio at 1:2) gave directly 1,2-divinylcyclododecan-1-ol, which was easily converted to 5-cyclohexadecen-1-one. This one-step divinylation was found to proceed not through a direct displacement of the Grignard reagent with the chlorine atom, but through a pinacol-like rearrangement of a vinyl group.
STUDY OF ADSORPTION OF POTASSIUM ATOMS ON A MICA SURFACE BY MEANS OF MOLECULAR BEAMS
Authors: Tomoda Shinji , Kusunoki Isao , Kodera Kumasaburo 
Published: July 2006

Abstract
The process of the deposition of potassium atoms on a mica surface is observed by means of molecular beams. The sticking coefficient changes with the deposition time. The observed change is discussed by a simple rate theory on assumptions similar to those of the “BET” model.
AN ESR STUDY ON PYRAMIDAL INVERSION AT THE TERVALENT CARBON ATOM OF 2-METHYL-1,3-DIOXOLAN-2-YL RADICAL
Authors: Kobayashi Shigero O , Simamura Osamu 
Published: July 2006

Abstract
The effect of temperature on the esr spectrum of 2-methyl-1,3-dioxolan-2-yl radical was investigated. At low temperature, the four γ-hydrogens of this radical were observed to be two non-equivalent groups of two equivalent hydrogens. The radical centre undergoes a pyramidal inversion with an enthalpy of activation of 5.6 kcal/mole and an entropy of activation of 1.0 e.u.
ALLYLATION OF AROMATIC NUCLEUS WITH ALLYL DIPHENYL PHOSPHATE IN THE PRESENCE OF BORON TRIFLUORIDE ETHERATE
Authors: Butsugan Yasuo , Kawase Koji , Saheki Kyoji , Muto Masao , Bito Tadaaki 
Published: July 2006

Abstract
Allyl diphenyl phosphate[ADP] reacted with a large excess of aromatic compounds possessing electrondonating group in the presence of boron trifluoride etherate under mild experimental conditions to give selectively the corresponding monoallylated compounds in the yield of 40–60%.
EXTRA COUPLING OF AN ETHYL RADICAL ADSORBED ON THE ZEOLITES
Authors: Kudo Shigetoshi , Hasegawa Akinori , Komatsu Tsuyoshi , Shiotani Masaru , Sohma Junkichi 
Published: July 2006

Abstract
New ESR spectra were obtained from the irradiated ethane adsorbed on zeolites. The simulation method and an analysis indicate that the new spectra are those from ethyl radical having additional coupling with an extra proton.
PEPTIDE SYNTHESIS BY OXIDATION-REDUCTION CONDENSATION BY USE OF TRIARYL PHOSPHITE AS REDUCING REAGENT
Authors: Ueki Masaaki , Shishikura Takashi , Hayashida Akira , Mukaiyama Teruaki 
Published: July 2006

Abstract
Use of triaryl phosphite as reducing reagent in peptide synthesis by oxidation-reduction condensation was studied. Aryl esters having electron-withdrawing substituents gave optically pure peptides in good yields by reacting in N,N-dimethylformamide solution.
CHEMICAL PROOF OF ENANTIOMERIC (−)-LONGIBORNEOL
Authors: Matsuo Akihiko , Nakayama Mitsuru , Hayashi Shuichi 
Published: July 2006

Abstract
During the course of investigation on constituents of liver-worts, four sesquiterpenoids showing opposite rotation, (−)-longiborneol, (−)-α-longipinene, (−)-longifolene and (+)-α-himachalene, were isolated from a Japanese liverwort. By preparation of derivatives and application of physical methods the absolute configuration of (−)-longiborneol, the main component, was elucidated as an optical antipode (I) of (+)-longiborneol isolated from higher plants.
NUCLEAR QUADRUPOLE RESONANCE OF CHLORINE IN SOME HEXACHLOROPLATINATE(IV) HEXAHYDRATES
Authors: Sasane Akinobu , Tanaka Tomoyoshi , Toba Akira , Kume Yoshio , Nakamura Daiyu , Kubo Masaji 
Published: July 2006

Abstract
The nuclear quadrupole resonance of chlorine in MptCl6–6H2O (M(II) = Mn, Fe, Co, Ni, Cu, Zn, Cd, Ba) was observed between 77 and 450 K. Copper(II) hexachloroplatinate(IV) hexahydrate shows a phase transition at 137 K. This complex and barium hexachloroplatinate(IV) hexahydrate yield resonance lines showing a positive temperature coefficient capable of being interpreted in terms of hydrogen bond formation.
ALKYLATION OF TOLUENE WITH PROPYLENE OVER THE ELECTRON DONOR–ACCEPTOR COMPLEXES OF AROMATIC HYDROCARBONS WITH SODIUM
Authors: Tsuchiya Susumu , Saito Yoshiaki , Murakami Tsugio , Iwata Hideaki , Annaka Tsutomu 
Published: July 2006

Abstract
The alkylation of toluene with propylene takes place over the electron donor–acceptor complexes of anthracene, chrysene, benzoquinone, and p-chloranil with sodium, and two types of the alkylation, the side-chain- and the nuclear-alkylation, have been suggested by the reaction products, butylbenzenes and cymenes.
ABSOLUTE CONFIGURATIONS OF TWO SUGARS OF ANTIBIOTIC B-58941
Authors: Suzuki Takashi , Sugita Norio , Asai Mitsuko 
Published: July 2006

Abstract
Absolute configurations of neutral sugar of antibiotic B-58941 and two methyl glycosides of its dihydro-sugar are assumed as 2,3,6-trideoxy-l-hexopyranos-4-ulose and methyl 2,3,6-trideoxy-(α or β)-l-erythro-hexopyranoside, respectively. Methyl glycoside of a basic sugar of B-58941-B is identified as methyl d-mycaminoside.
A NEW CONDENSATE OBTAINED FROM THE AGLYCONE MOIETY OF ANTIBIOTIC B-58941
Authors: Suzuki Takashi , Mizuta Eiji , Sugita Norio 
Published: July 2006

Abstract
A new condensate (macrocyclic lactone) is obtained by refluxing depoxy B-58941-B, prepared by depoxidation of antibiotic B-58941, with sulfonic acid-type resin in methanol. The structure of the condensate is assumed as 3,5-dihydroxy-4,8,12,14-tetramethyl-9-oxo-6,8-(1-methoxyethano)-10,12-heptadecadien-15-olide.
STRUCTURES OF NEW SESQUITERPENES RELATED TO PSEUDOTSUGONAL AND TODOMATUIC ACID ISOLATED FROM DOUGLAS-FIR WOOD
Authors: Sakai Tsutomu , Hirose Yoshio 
Published: July 2006

Abstract
Three new sesquiterpenes related to pseudotsugona and todomatuic acid, named dihydropseudotsugonol, dihydropseudotsugonol, and ar-todomatuic acid, have been isolated from the volatile wood oil of Douglas fir. The structures and stereochemistry of these compounds have been established.
SYNTHESIS OF NEW HYDROTALCITE-LIKE COMPOUNDS AND THEIR PHYSICO-CHEMICAL PROPERTIES
Authors: Miyata Shigeo , Kumura Teruhiko 
Published: July 2006

Abstract
The new hydrotalcite-like compounds which consist of divalent metal, trivalent metal and inorganic or organic anion were synthesized and it was found that they have many characteristic properties such as the formation of solid solutions, anion exchange and molecular sieving. Some of them were capable of separating the mixture of air and hydrogen into N2, O2 and H2.
CARBON-13 NUCLEAR MAGNETIC RESONANCE OF METAL COMPLEXES. I.
Authors: Hirota Michio , Koike Yasuo , Ishizuka Hidehiro , Yamasaki Akira , Fujiwara Shizuo 
Published: July 2006

Abstract
Carbon-13 chemical shifts were measured for 15 cyanometallate complexes in aqueous solution with Fourier-Transform NMR spectroscopy. The chemical shift values are distributed between −50.33 ppm (from external benzene standard) for Fe(CN)64− and +2.66 ppm for Pt(CN)42−. The coupling constant 1JC-Co was found to be 126 ± 4 Hz for Co(CN)63−.
A NEW SYNTHETIC ROUTE TO 1,3-DITHIOLIUM SALTS INVOLVING NEIGHBORING GROUP PARTICIPATION OF DITHIOCARBAMATE GROUP
Authors: Hiratani Kazuhisa , Shiono Hiroyuki , Okawara Makoto 
Published: July 2006

Abstract
A new and useful synthetic route to 1,3-dithiolium salts involving neighboring group participation of dithiocarbamate group as a key step is described. 4-Bromo-2-dialkylamino-1,3-dithiolan-2-ylium bromide was obtained in high yield by the addition of equimolar bromine to S-vinyl-N,N-dialkyldithiocarbamate, and then, pyrolysis of the salt under reduced pressure gave 1,3-dithiolium salt in excellent yield. 4-Substituted-1,3-dithiolium salts were also obtained in the same way.
REACTION OF SULFINIC ESTERS WITH METHYLSULFINYLCARBANION
Authors: Kunieda Norio , Nokami Junzo , Kinoshita Masayoshi 
Published: July 2006

Abstract
Sulfinic esters react with methylsulfinylcarbanion to give the corresponding α-methylsulfinylmethyl sulfoxides(I) in good yields. The per cent ratio of meso form to dl form of the product obtained is about 60 : 40. When (−)-menthyl (−)-(S)-p-toluenesulfinate is treated with methylsulfinylcarbanion, dextrorotatory α-methylsulfinylmethyl p-tolyl sulfoxide(IIa) is obtained. Recrystallization of (IIa) yields the diastereomerically pure (+)-(S)-α-methylsulfinyl-(R)-methyl p-tolyl sulfoxide(IIb). Based on these observations, the stereochemistry of the reaction is discussed.
PHOTOELECTRON SPECTRUM OF VINYLCYCLOPROPANE
Authors: Harada Yoshiya , Seki Kazuhiko , Suzuki Akira , Inokuchi Hiroo 
Published: July 2006

Abstract
The photoelectron spectrum of vinylcyclopropane has been measured by using the 21.22 eV helium resonance lines. Eleven ionization potentials have been observed. The values of the first two ionization potentials have been explained by the conjugative interaction between the σ-orbitals of the cyclopropane ring and the bonding π-orbital of the vinyl group.
THERMALLY STIMULATED CURRENT IN SMECTIC LIQUID CRYSTALS
Authors: Tachibana Taro , Takamatsu Toshiaki , Fukada Eiichi 
Published: July 2006

Abstract
Thermally stimulated current curves were determined for two samples of smectic liquid crystals; diethyl azoxybenzene-4, 4′-dicarboxylate and ethyl p-(p-ethoxybenzylidene) aminocinnamate. The curves showed peaks or kinks at phase transition points. The form of the curves was interpreted in terms of the release of impurity ions accompanying the phase transition.
PREPARATION AND LATTICE DISTORTION OF PEROVSKITE-TYPE COMPOUNDS A2+R4+O3 (A = Ba,Sr R = Ce,Pr,Tb)
Authors: Yoshimura Masahiro , Nakamura Tetsuro , Sata Toshiyuki 
Published: July 2006

Abstract
Preparation and lattice distortion of perovskite-type compounds A2+R4+O3 were studied. All of them belong to the same lattice symmetry of orthorhombic Pbnm,that is,they have monoclinic perovskite cells. The magnitude of the monoclinic distortion increases mainly along the diagonal axis of the b-plane of the perovskite cell with the decrease of “tolerance factor”.
C9H10 HYDROCARBONS. THE PHOTOCHEMISTRY OF BARBARALANE
Authors: Tsuruta Haruki , Kimagai Tsutomu , Mukai Toshio 
Published: July 2006

Abstract
Irradiation of Toarbaralane (1c) afforded four products (3, 4, 5 and 6). The formation of 3, 4 and 5 suggests that 1c initially rearranges to bicyclo[4.2.1]nona-2,4,7-triene (7), which then converts into these products. This suggestion was supported by control experiments. The possible mechanistic pathways for these photochemical rearrangements were outlined.
FORMATION OF MONOTERPENOID SKELETON FROM C9 DIEPOXIDE USING 1,3-DITHIANE
Authors: Torii Sigeru , Matuyama Yuziro , Isihara Masakazu , Uneyama Kenji 
Published: July 2006

Abstract
The reaction of 2,2-dilithio-l,3-dithiane with C9 diepoxide (3) prepared from 6-methyl-5-hepten-2-one (1) afforded precursors of monocyclic and acyclic monoterpenoid compounds (4), (5), (6a), and (6b).
REACTION OF NUCLEIC ACID BASES WITH EPOXIDES AND LACTONE
Authors: Kondo Koichi , Sato Toshiaki , Takemoto Kiichi 
Published: July 2006

Abstract
Reaction of adenine with propylene oxide and styrene oxide was found to give 9-(2-hydroxypropyl)- and 9-(2-hydroxyphenethyl)adenine, respectively. N-carboxyethylated uracil, thymine and cytosine were prepared by allowing to react the corresponding pyrimidines with propiolactone.
ESTIMATING MECHANISM AND KINETIC RATE CONSTANTS USING ITERATIVE SEARCH TECHNIQUE I. ANATION REACTION OF AQUOPENTAAMMINERUTHENIUM(III) COMPLEXES IN AQUEOUS SOLUTION
Authors: Ohkubo Katsutoshi , Sakamoto Hiroyuki , Ohyoshi Akira 
Published: July 2006

Abstract
The elementary reaction mechanism and the kinetic rate constants for the anation reaction of aquopentaammineruthenium(III) complexes are estimated by a new iterative search technique. The anation mechanism is well illustrated by the SN1 and SN2 combined reaction map. The five-coordinated species participates directly in the reaction as a momentarily living intermediate, and the seven-coordinated species seems to be allowed only in the transition state.
NH4Cl–CuCl AS A CATALYST FOR THE SYNTHESIS OF KETAZINE DIRECTLY FROM BENZOPHENONE, AMMONIA AND OXYGEN
Authors: Hayashi Hiromu , Kawasaki Kengo , Murata Tsutomu 
Published: July 2006

Abstract
A new catalyst, NH4Cl–CuCl, for the synthesis of benzophenone azine is proposed. The recovery of expensive CuCl should be simplified than in the case of ZnCl2–CuCl. An improved catalyst, NH4Cl–CuCl·Ph2C=NH, is also descrived.
EXCIMER PHOSPHORESCENCE OF NAPHTHALENE IN FLUID SOLUTION
Authors: Takemura Takeshi , Baba Hiroaki , Shindo Yoshio 
Published: July 2006

Abstract
The phosphorescence spectrum of naphthalene has been measured in fluid isooctane solution in the temperature range of 80 to −100°C. The spectrum is essentially different from that obtained in rigid solution at 77K, and is ascribable to phosphorescence from the triplet excimer of naphthalene. An analysis of the experimental results suggests that the radiative rate constant for the triplet decay is enhanced as a result of the formation of the triplet excimer.
SKELETAL REARRANGEMENT IN DEHYDROGENATION OF THUJOPSENE AND ITS CONGENERS
Authors: Itô Shô , Yatagai Mitsuyoshi , Endo Katsuya , Ueda Yasutsugu 
Published: July 2006

Abstract
Dehydrogenation of thujopsene and widdrol revealed extensive skeletal rearrangement. The reaction pathway was established by the isolation and dehydrogenation of the stable intermediates.
TRIPLET STATE ESR OF 1,10-PHENANTHROLINE AND 2,9-DIMETHYL-1,10-PHENANTHROLINE METAL CHELATES
Authors: Fujita Hideo , Kako Saburo , Ohya-Nishiguchi Hiroaki , Deguchi Yasuo 
Published: July 2006

Abstract
Triplet state ESR spectra of 1,10-phenanthroline and 2,9-dimethyl-1,10-phenanthroline metal chelates are reported with their zero-field splitting parameters.