bluuebunny/crossref_metadata_2025_split huggingface dataset:
Catalytic Activities of Pyridoxal Analogues. I. The Catalytic Effects of Pyridoxal, Pyridoxal Methochloride, and Pyridoxal N-Oxide on the Racemization of l-Glutamic Acid
Authors: Ando Makoto , Emoto Sakae 
Published: July 2006

Abstract
An improved method for the syntheses of pyridoxal methochloride (1) and pyridoxal N-oxide (5) was investigated. Further, the catalytic activities of pyridoxal, 1, and 5 on the racemization of l-glutamic acid in the presence of cupric ions were studied.
Pyrolysis of 1,2-EpithiocycIohexane
Authors: Inoue Shodo , Oae Shigeru 
Published: July 2006

Abstract
Dicyclohexyl sulfide, cyclohexyl phenyl sulfide, dicyclohexyl disulfide, 2,3,5,6-bis(tetramethylene)-1,4-dithiane, cyclohexanethiol and cyclohexyl cyclohexenyl sulfide were obtained by the pyrolysis of 1,2-epithiocyclohexane apparently via the attack of sulfur radical species, formed by the pyrolysis of 1,2-epithiocyclohexane, on the double bond of cyclohexene.
The Photocycloaddition of 2-Cyclohexenone and Maleic Anhydride to Δ9,10-Octalin
Authors: Kunai Atsutaka , Kimura Koji , Odaira Yoshinobu 
Published: July 2006

Abstract
The photocycloaddition to Δ9,10-octalin (1) was investigated. Both 2-cyclohexenone and maleic anhydride reacted with 1 to afford the corresponding photocycloadducts, 2 and 3 respectively.
Base-catalyzed Oxygenation of 2,6-Di-t-butylphenols. A Convenient Method for Preparation of p-Quinols
Authors: Nishinaga Akira , Itahara Toshio , Matsuura Teruo 
Published: July 2006

Abstract
The oxygenation of 4-alkyl-2,6-di-t-butylphenols in diethylamine containing sodium, amide under mild conditions afforded the corresponding p-quinols in excellent yields.
Kinetic Studies of the Aggregation of Acridine Orange onto Poly-(α,l-glutamic acid)
Authors: Tsuda Motoyuki 
Published: July 2006

Abstract
The aggregation process of acridine orange (AO) onto the helical poly-α,l-glutamic acid (PLGA) was studied by means of a stopped-flow and rapid-scan spectrophotometer. After the flow stop, a rapid spectral change was observed in which the α-band and the β-band fell, and the γ-band and the polymer band rose. A mechanism of the process was proposed by which after a rapid nucleative process, AO molecules are cooperatively bound to form a dimer and that then the dimer grows to the oligomer and to the polymer of AO which has the form of a super-helix around the core of the α-helix of PLGA.
Solubility of Transition Metal Complexes in Aqueous Salt Solutions. I. Tris(1,10-phenanthroline)iron(II) Perchlorate
Authors: Miyoshi Katsuhiko , Taura Toshiaki , Shimada Chiyori , Yoneda Hayami 
Published: July 2006

Abstract
Solubility of tris(1,10-phenanthroline)iron(II) perchlorate was determined at 25°C by spectrophotometry in aqueous solutions of sodium halides, sulfate, acetate, and trichloroacetate up to ionic strength of 0.5. It was found that the solubility is higher in the presence of water-structure breaking anions but is lower in the presence of water-structure making anions than is expected from the change in activity coefficients with ionic strength. This was interpreted in terms of compatibility and incompatibility of the influence of the complex cation on the water structure with that of added anions, and the hydrophobic nature of the complex cation was noted.
The Solvent Extraction-Polarographic Determination of Cadmium(II) as the Tris(2,2′ -bipyridine)iron(II) Tetraiodocadmate(II) Complex
Authors: Hasebe Kiyoshi , Ohtsuki Tsukasa , Kambara Tomihito 
Published: July 2006

Abstract
A new method for the solvent extraction-polarographic determination of cadmium has been proposed. The quaternary complex formed by the tris(2,2′-bipyridine)iron(II) cation and the tetraiodocadmate(II) anion can be readily extracted into benzyl alcohol. The extracted complex shows a well-defined reduction wave in the ternary electrolyte-solvent mixture, composed of benzyl alcohol, an aqueous electrolyte solution, and methyl cellosolve. The available range of the present method covers from 5.7×10−6 to 91.4×10−6 M of cadmium(II) in the aqueous phase. The optimum pH range for extraction is 3–9, and the extracted species is stable in the ternary solvent mixture for 5hr. Zinc (II), bromide, and chloride ions do not interfere, but copper (II), mercury (II), and iron(III) do interfere.
Phase Equilibria in the Fe–Fe2O3–Eu2O3 System at 1200 °C
Authors: Sugihara Tadashi , Kimizuka Noboru , Katsura Takashi 
Published: July 2006

Abstract
The standard Gibbs energies of the reaction of EuFeO3 and Fu3Fe5O12 were determined to be −63300±200 cal and −297800±600 cal respectively at 1200°C by means of following reactions: Fe+1/2 Eu2O3+3/4 O2=EuFeO3 and 5 Fe+3/2 Eu2O3+15/4 O2=Eu3Fe5O12, based on the phase equilibria in the Fe–Fe2O3–Eu2O3 system.
The 13C Magnetic Resonance Study on the Effects of Divalent Paramagnetic Metal Acetylacetonates on Pyridine, Quinoline, and Isoquinoline. Specific Interactions with Mn(AA)2
Authors: Hayamizu Kikuko , Murata Makoto , Yamamoto Osamu 
Published: July 2006

Abstract
13C nuclear magnetic resonance studies of pyridine solutions containing paramagnetic Ni (II), Co(II), Cu(II), or Mn(II) acetylacetonate are made by observing the induced chemical shift, the line width, and the spin-lattice relaxation time due to the paramagnetism of these metals. The origin of the paramagnetic effects on the 13C spectra induced by Ni, Co, or Cu acetylacetonate is mainly the contact interaction, while the 13C spectra of the pyridine–Mn(AA)2 system can not be interpreted by the same interaction. The 13C spectra of quinoline and isoquinoline containing Mn(AA)2 are also studied; the results indicate that the predominant mechanism is the dipole-dipole interaction.
Thermal Bleaching of the Colored Form in the Photochromism of 2-Hydroxy-2′,4,4′-trimethoxytriphenylmethanol in Acetonitrile
Authors: Hamai Sanyo , Kokubun Hiroshi 
Published: July 2006

Abstract
The photochromism of 2-hydroxy-2′,4,4′-trimethoxytriphenylmethanol (HTMM) in acetonitrile differs from that of other 2-hydroxytriphenylmethanol derivatives in some aspects. The colored form, 2′,4,4′-trimethoxy-o-fuchsone (TMF), of HTMM partly converts to 2-hydroxy-2′,4,4′-trimethoxytriphenylmethyl cation (Cat) at an early stage of the bleaching reaction. At a later stage a slow bleaching of TMF to HTMM becomes the main decay process. Bleaching of the produced Cat is so slow that Cat remains even after complete disappearance of TMF. The formation of Cat was concluded to be a reaction between adsorbed TMF and water on the cell surface. The rate determining step is not a diffusion process since the activation energy found is much larger than that of viscosity. Cat decays by the reaction with water, not with hydroxide ion.
The Birch Reduction of Heterocyclic Carboxylic Acids. I. The Birch Reduction of 3-Furoic Acid
Authors: Kinoshita Takamasa , Miyano Kouichi , Miwa Toshio 
Published: July 2006

Abstract
The reduction of 3-furoic acid with sodium and 2-propanol in liquid ammonia gave 2,3-dihydro-3-furoic acid, which was isolated as a methyl ester (1) in 85% yield. The acid-catalyzed addition of methanol, ethanol, or 2-propanol to the ester 1 yielded 5-alkoxytetrahydro-3-furoate ester, 2, 3, or 4, respectively, in a quantitative yield. When methanol or ethanol was used as a proton source in the reduction, work-up of the reaction mixture gave 5-alkoxytetrahydro-3-furoic acid, which was isolated as the methyl ester, 2 or 3, in 87 or 92% yield, respectively. A mechanism for the Birch reduction of aromatic carboxylic acids is proposed.
Absolute Configurations and Chiroptical Properties of Optically Active Derivatives of Tricyclo[4.3.0.03,8]nonane (“Twist-brendane”)
Authors: Nakazaki Masao , Naemura Koichiro , Harita Sigeyuki 
Published: July 2006

Abstract
(+)-Tricyclo[4.3.0.03,8]nonane (“twist-brendane”) was synthesized via (+)-tricyclo[4.3.0.03,8]nonan-9-one from (+)-endo-2-carboxybicyclo[2.2.2]oct-5-ene. Optically active derivatives of twist-brendane with two functional groups such as (−)-2,9-twist-brendanedione and (−)-9-methylenetwist-brendan-2-one were synthesized from (−)-endo-2-carboxybicyclo[2.2.2]oct-5-ene. Absolute configurations of the compounds were established and their chiroptical properties were discussed.
Coenzyme Models. III. Enhanced Charge Transfer Interaction between the Oxidized and Reduced Forms of Nicotinamide in Micellar and Polymeric Systems. NAD Coenzyme Model
Authors: Shinkai Seiji , Tamaki Kiyoshi , Kunitake Toyoki 
Published: July 2006

Abstract
The micelle of 1-lauryl-3-carbamoylpyridinium bromide(NLaN) and poly-1-(p-vinylbenzyl)-3-carbamoylpyridinium chloride (PVCG) were shown to form charge transfer complexes with dihydronicotinamides and several aromatic compounds in aqueous media. A broad charge transfer absorption at longer wavelengths was easily detected, and the association constant of 1 : 1 complexes which was estimated from the CT band was enhanced by 6.2–220 times in the NLaN micelle and by 14–66 times in the polymeric system, compared with non-micellar, monomeric system. The enhancement of the interaction between NLaN and its reduced from (NLaNH) was similar in the CTAB micelle and in a nonionic micelle. The increased electron-acceptabilities of the pyridinium group in micellar and polymeric systems were discussed in reference to NAD coenzyme.
Changes in the Catalytic Activity of Cold-worked Platinum during the Oxidation of Carbon Monoxide
Authors: Kishimoto Shozo 
Published: July 2006

Abstract
The rate of the oxidation of carbon monoxide was measured on cold-worked platinum to study the influence of annealing on the catalytic behavior. It was found that the presence of lattice defects (dislocations) in the crystal plays a role in initiating the reaction and serves to create new active sites during an acceleration period of the reaction.
On the Phase Transition of Cyclic Tris(ethylene terephthalate)
Authors: Kitano Yukishige , Kashiwagi Michio , Ebata Yasuyuki 
Published: July 2006

Abstract
The crystal data of the Type B modification of the cyclic tris(ethylene terephthalate) showed it to be hexagonal, with the unit-cell dimensions of a=15.42±0.03 and c=20.78±0.05 Å (space group, P61 or P65). The effects of some organic reagents on the stability of Type B were studied qualitatively, and some information about the phase changes was obtained by the X-ray-diffraction and thermal-analysis techniques.
The Regioselective Addition of Alcohols to Isoprene with Rhodium Trichloride Hydrates
Authors: Kawazura Hiroshi , Takagaki Toshihisa , Ishii Yoshio 
Published: July 2006

Abstract
Rhodium trichloride hydrates gave predominantly the 1,2-addition product, 2-alkoxy-2-methylbut-3-ene, in the addition reaction of alcohols to isoprene. The regioselective path was established by assuming the formation of the π-(2-methylbut-3-en-2-yl)rhodium complex.
Sucrose Chemistry. 6. Synthesis of Amino Derivatives of Sucrose
Authors: Suami Tetsuo , Ikeda Toshihide , Nishiyama Shigeru , Adaghi Ryoichi 
Published: July 2006

Abstract
6′-Amino-6′-deoxy- and 1′,6′-diamino-1′,-6′-dideoxysucrose have been prepared by azidolysis of the corresponding tosylates, followed by catalytic hydrogenation.
The Formation of 1,1′-Oligomeric Ferrocenes from Chloromercuriferrocene and Bis(chloromercuri)ferrocene
Authors: Izumi Taeko , Kasahara Akira 
Published: July 2006

Abstract
A series of 1,1′-oligomeric ferrocenes, including biferrocene, 1,1′-biferrocenylene, 1,1 ′-terferrocene, 1,1′-quaterferrocene, 1,1′-quinqueferrocene, and 1,1′-sexiferrocene, was formed by the reaction between chloromercuriferrocene and 1,1′-bis(chloromercuri)ferrocene in the presence of palladium(II) salt.
Hydrogen Bonding Interactions of Carboxylic Acids with N,N-Dimethylacetamide and Pyrazine as Studied by Means of NMR Dilution Shifts
Authors: Fujiwara Hideaki , Yoshida Nobuyuki , Ikenoue Tsuneo 
Published: July 2006

Abstract
The NMR dilution shifts of OH proton in several carboxylic acids have been studied for mixtures with N,N-dimethylacetamide (DMA) or pyrazine. The acids treated were acetic, propionic isobutyric, and trifluoroacetic acids. The dilution shifts curve of OH proton in each acid–DMA system showed a characteristic ν-type curve with the minimum value at 0.65–0.75 mol fraction of the acid. The curve for the isobutyric acid-pyrazine system was linear below 0.45 mol fraction of the acid, taking the minimum at 0.75 mol fraction. These curves were explained by assuming the formation of both 1: 1 and 2 (acids): 1(base) complexes in the chemical equilibrium. The formation constants of the complexes and the shifts of OH proton in the 2: 1 complex were estimated for each system. Liability of the complex formation and the structure possible for the 2: 1 complex were discussed.
The Crystal and Molecular Structure of the p-Bromobenzoate of Sterigmatocystin
Authors: Fukuyama Keiichi , Tsukihara Tomitake , Katsube Yukiteru , Tanaka Nobuo , Hamasaki Takashi , Hatsuda Yuichi 
Published: July 2006

Abstract
The crystals of the p-bromobenzoate of sterigmatocystin, C25H15O7Br, are monoclinic, with the space group of P21 and with two molecules per unit cell with the dimensions of a=13.062(7), b=9.029(4), c=8.942(4) Å, and β=102.25(5)°. The structure was refined by a least-squares method to R=0.055 for 1292 non-zero reflections. The absolute configuration of the molecule was determined by using the anomalous dispersion effect of the bromine atom. The absolute configuration of the bisdihydrofuran ring agrees with that in aflatoxin B1.
Theoretical Determination of the Principal Axes of 13C Chemical Shielding Tensors and their Relationship to the Anisotropies in Some Organic Compounds
Authors: Ando Isao , Nishioka Atsuo , Kondo Masahiro 
Published: July 2006

Abstract
The principal axes and values for the 13C chemical shielding tensors of carbonyl compounds (formaldehyde, acetaldehyde, acetone, and formic acid), methanol, and n-paraffins (propane and n-butane) have been determined theoretically by the LCGI–MO theory using the MINDO/2 method. Further, their anisotropies have been estimated. These results have then been discussed by comparing them with the observation of Pines et al. and in part compared with the anisotropies in the literature calculated by using other theoretical methods.
Inhibition Effects of Some Polymers on Electroreduction of Anions at the Mercury/Solution Interface
Authors: Ohsaka Tetsuya , Iida Yasuo , Yoshida Tadashi 
Published: July 2006

Abstract
The present work was conducted to investigate the electroreduction of anions (typically S2O82− and BrO3−) under the influence of the adsorption of polymers (polyethyleneglycol, alkylphenoxy polyethoxy ethanols and polyvinylpyrrolidone) on the electrode surface. The limiting current of S2O82− reduction was depressed by the polymers in the region from nearly the zero-charge potential to the more negative potential. The half-wave potential of BrO3− reduction shifted towards more negative potential by adding the polymers. In the potential range where the cathodic current was mainly controlled by mass transfer of the anions, the time (tm) needed to complete the formation of a monolayer was obtainable conveniently from the instantaneous current vs. time (I–t) curve as reported previously for the inhibited reduction of Cd2+ or Cu2+. In the potential range where the current was mainly controlled by charge transfer, an exact determination of tm, by which the maximum surface concentration of polymer was given, was possible only when the instantaneous current density (i) was plotted against t1⁄2. In such a potential range, i was expressed as follows.
2& i=i_0-(i_0-i_1)(t/t_m)^1/2 & & for t≤t_m
or & i=i_1 & & for t&gt;t_m
Moreover,
2& \barI_ads/\barI_0=1-\frac1013\fraci_0-i_1i_0(t_d/t_m)^1/2 & & for t_d≤t_m
& \barI_ads/\barI_0=1-\frac1013\fraci_0-i_1i_0-\frac313\fraci_0-i_1i_0{1-(t_d/t_m)^-5/3} & & for t_d&gt;t_m
where i0 and i1 are the instantaneous current densities at θ=0 and 1, \barIads and \barI0 the polarographic currents with and without polymers, td the drop time, tm the time required to attain the saturated adsorption. The relationship between the shift of half-wave potential and (td⁄tm)1⁄2 (for td≤tm) or (td⁄tm)−5⁄3 (for td&gt;tm), was introduced and the results were verified for the inhibition effects of polymer on the electroreduction of BrO3− as well as for that on VO2+ reduction.
Microwave Spectrum of 2-Pyridinecarbaldehyde
Authors: Kawashima Yoshiyuki , Suzuki Masao , Kozima Kunio 
Published: July 2006

Abstract
The microwave spectrum of 2-pyridinecarbaldehyde has been observed in the region 8–22 GHz. The rotational constants of the ground state are A=5362.52±2.19 MHz, B=1620.07±0.03 MHz, and C=1244.42±0.03 MHz and the inertia defect is −0.075 amu·Å2. This value demonstrates that the molecule is planar in its equilibrium position. The total dipole moment is 3.56±0.07 D, the components of which are μa=3.48±0.05 D and μb=0.76±0.08 D. From these facts it is concluded that the conformation of the molecule is of the O–N s-trans form. The rotational constants of the five vibrationally-excited states have also been determined.
The Thermodynamic Properties of C9H18 Naphthenes. I. The Determination of the Equilibrium Constants for the Hydrogenation of Propyl- and Isopropylbenzene and Ethyltoluenes
Authors: Miki Yasuo 
Published: July 2006

Abstract
The equilibria for the hydrogenation of n-propylbenzene, isopropylbenzene, 1-methyl-2-ethylbenzene, 1-methyl-3-ethylbenzene, and 1-methyl-4-ethylbenzene were determined experimentally over the temperature range of 250 to 450°C and under hydrogen pressures ranging from 5 to 50 atm. The data were then used to calculate the values of the free energy and the equilibrium constant of the above reactions and the values of standard free energy of formation from the elements for n-propylcyclohexane, isopropylcyclohexane, 1-methyl-cis-2-ethyl-cyclohexane, 1-methyl-trans-2-ethylcyclohexane, 1-methyl-cis-3-ethylcyclohexane, 1-methyl-trans-3-ethylcyclohexane, 1-methyl-cis-4-ethylcyclohexane, and 1-methyWrawj-trans-ethylcyclohexane.
The Steric Requirements of N,N′-Bis(salicylidene)-2-aminobenzylamines on Metal Chelate Formation
Authors: Kanatomi Hajime , Demura Yoichi , Murase Ichiro 
Published: July 2006

Abstract
Copper(II), Ni(II), Co(II), Zn(II), and Be(II) chelates of N,N′-bis(salicylidene)-2-aminobenzylamine and its methyl and dimethyl salicylidene derivatives have been prepared and characterized. According to the molecular models, the ligands are favorable to tetrahedral arrangement on complex formation. The spectral and magnetic properties revealed that all the Co(II) and some of the Cu(II) chelates were pseudo-tetrahedral, while the Ni(II) and other Cu(II) chelates were square-planar, with a considerable angle strain. This ligand property is somewhat inconsistent with the conclusion derived from N,N′-bis (salicylidene) polymethylenediamine chelates, in which the trimethylene analogue could not take a pseudotetrahedral arrangement around a metal ion. The difference in stereochemistry between the two ligands with the same number of bridging carbon atoms will be discussed on the basis of the flexibility and the steric requirement of the central chelate ring.
Iminophosphorane Complexes of Palladium(II)
Authors: Fukui Mitsuyo , Itoh Kenji , Ishii Yoshio 
Published: July 2006

Abstract
Iminophosphorane complexes of palladium [(C6H5)3P=N–C6H4–X-p]PdCl2(CH3CN) (X=NO2, 1A; COO-C2H5, 2A; Cl, 3A; H, 4A; CH3, 5A) have been prepared by ligand-substitution reaction between (C6H5CN)2PdCl2 and the parent iminophosphoranes, followed by recrystallization from acetonitrile-ethyl acetate. Other iminophosphoranes (X=OCH3, and (C6H5)2(CH3)P=N–Si(CH3)3), however, gave only dimeric complexes with the [(Iminophosphorane)PdCl2]2 composition. Complexes 1A–5A and {[(C6H5)3P=N–C6H4–X-p]PdCl2}2 (X=NO2, 1B; COOC2H5, 2B; Cl, 3B; H, 4B; CH3, 5B) are also discussed. The ligand-exchange reaction of 2B and 5B with α,α′-bipyridine, (C6H5)3P, and (CH3O)3P took place, liberating the parent iminophosphorane.
Carboxymethylation of Organic Halides by Palladium Complexes under Mild Conditions
Authors: Hidai Masanobu , Hikita Tomoji , Wada Yoshimasa , Fujikura Yuzo , Uchida Yasuzo 
Published: July 2006

Abstract
Palladium complexes, Pd(CO)(PPh3)3, Pd3(CO)3(PPh3)4, Pd3(CO)3(PPh3)3, and PdCl2(PPh3)2 were found to be excellent catalysts for the carboxymethylation of various organic halides under very mild conditions. The carboxymethylation reaction is considered to proceed via acyl complexes as the intermediates.
Reaction of Tetrachloroxylenes with Fuming Nitric Acid. Side-chain Nitrooxylation and Quinol Nitrate Formation
Authors: Suzuki Hitomi , Ishizaki Katsuro , Maruyama Shigeru , Hanafusa Terukiyo 
Published: July 2006

Abstract
Direct action of fuming nitric acid upon tetrachloro-o- and -m-xylenes at room temperatur led to the formation of 3,5,6-trichloro-1,2-dimethyl-4-oxocyclohexa-2,5-dienyl nitrate and 2,5,6-trichloro-1,3-dimethyl-4-oxocyclohexa-2,5-dienyl nitrate, respectively, as the major products. In contrast, tetrachloro-p-xylene was simply converted into 2,3,5,6-tetrachloro-4-methylbenzyl nitrate. Plausible reaction sequences as well as criteria as a basis for predicting the propensity of polysubstituted alkylaromatics towards unusual nitration have been discussed.
Nitration of 9,10-Dialkylphenanthrenes. Side-chain Nitrooxylation in Competition with Side-chain Nitration
Authors: Suzuki Hitomi , Yoneda Hajime , Hanafusa Terukiyo 
Published: July 2006

Abstract
9,10-Dimethylphenanthrene and 9-methyl-10-ethylphenanthrene gave 9-methyl-10-nitromethylphenanthrene and 9-ethyl-10-nitromethylphenanthrene, respectively, as major product, when treated with fuming nitric acid in dichloromethane at low temperatures. In contrast, 9,10-diethylphenanthrene yielded a comparable mixture of products arising from side-chain nitration and side-chain nitrooxylation, which on chromatography over deactivated alumina gave 9-ethyl-10-(α-nitroethyl)phenanthrene and 9-ethyl-10-(α-hydroxyethyl)phenanthrene as main isolable products. 9-Methylphenanthrene and 9-ethylphenanthrene were both simply nitrated at the ring position to give the corresponding 9-alkyl-10-nitrophenanthrenes in good yields. No side-chain attack was observed. Factors responsible for determining which one of the competitive pathways will be followed have been discussed.
The Radiation-induced Decoloration of Azo Dye in Aqueous Solutions
Authors: Suzuki Nobutake , Nagai Takeshi , Hotta Hiroshi , Washino Masamitsu 
Published: July 2006

Abstract
The decoloration yield of an Acid Red 265 neutral aqueous solution, G(-Dye), equaled 1.00±0.04, regardless of the dose rate and the initial dye concentration in the early stage. The G(-Dye) increased to 1.46 in the presence of nitrous oxide, but was independent of the presence of oxygen and acetone. In nitrogen-saturated solutions, the G(–Dye) increased markedly upon the addition of alcohols—for example, up to 1.83 upon the addition of 2 mM n-butyl alcohol. On the other hand, in oxygen-saturated solutions, the G(-Dye) decreased markedly upon the addition of even a small amount of alcohols. The effects of alcohols, namely, the G(-Dye) in both the solutions were in the order of their reactivity with OH radicals. The decoloration is attributable to the attack of the OH radicals formed by the radiolysis of water to the dye. The increase in the G(-Dye) for the nitrogen-saturated solutions containing alcohols is attributable to the attack of the alcohol radicals (R\dotCHOH) formed by the reactions of alcohols with OH radicals. In the oxygen-saturated solutions, the R\dotCHOH radicals are converted to the peroxides, which do not react with the dye. The rate constant for the reaction of the OH radical with Acid Red 265, obtained by using various additives from the competition reaction method, is 9.3±1.4×109 M−1 s−1. The effects of CNS−, glucose, and phenol were also examined.