bluuebunny/crossref_metadata_2025_split huggingface dataset:
Photocatalytic Oxidation of Sulfur on the Doped TiO2 Catalysts
Authors: Matsumoto Yasumichi , Yamaguchi Yasuhide , Sato Ei-ichi 
Published: July 2006

Abstract
TiO2(anatase) doped with various elements was used as the photocatalyst in the production of sulfuric acid from sulfur in water into which O2 was bubbled. The catalysts doped with typical elements having one and two valencies showed high catalytic activity, but some doped with typical elements having four and five valencies showed low activity. The intermediate, i.e., \dotO2H radical, in the O2 reduction produced by photoproduced electrons will probably play an important part in the production of sulfuric acid. Therefore, it was suggested that the Ti3+ ion in the TiO2 lattice which contribute to direct O2 reduction will inhibit sulfuric acid production. In the case of transition metal dopants, the transition metal cation in the TiO2 lattice will directly affect the O2 reduction. The catalyst doped (deposited) with Pt shows the highest catalytic activity of all the catalysts used in the present study.
Environment Effects on the ESR Spectrum of the Cation Radical of Dimethylketene in Low Temperature Matrices
Authors: Fujisawa Jun , Sato Shin , Shimokoshi Kazuo , Shida Tadamasa 
Published: July 2006

Abstract
The cation radical of dimethylketene produced in γ-irradiated solid solutions of various halocarbons has been investigated by ESR over a temperature range from 77 K to the melting point of each matrix. The cation radical in CCl4 was stable up to about 180 K and the spectrum was well resolved to allow the determinations of the anisotropic ESR parameters. In CCl2FCClF2 and CCl2FCCl2F, a series of irreversible spectral changes was observed with an increase in temperature. This process was interpreted in terms of the formation of the dimer cation. In the matrix of CCl3F, the ESR spectrum exhibited extra structure, which varied reversibly with temperature. The analyses of the spectra suggested that the cation radical in CCl3F weakly interacts with surrounding matrix molecules to form adducts.
A Sudden-polarization Model to Predict Excited State Reactivity of β-t-Butylstyrene
Authors: Kikuchi Osamu , Yoshida Hideki 
Published: July 2006

Abstract
A model in which two zwitteriorts play a significant role was employed to account for solvent and substituent effects on photochemical reactions of β-t-butylstyrene. These zwitterions are formed by 90° rotation about the external C=C double bond. Semi-empirical MINDO/3 calculations showed that these zwitterions can be two channels which give the observed reacation products. The model also elucidated satisfactorily the photochemical reactions of para substituted β-t-butylstyrenes.
Redox Behavior of N,N′-Ethylenebis(salicylideneaminato)bis(triphenylphosphine)ruthenium(II)
Authors: Doine Hideo , Stephens Francis F , Cannon Roderick D 
Published: July 2006

Abstract
Visible spectra and electrochemical behavior of the title complex [Ru{C2H4(N=CHC6H4O-o)2}{P(C6H5)3}2] (I) are reported. The redox potentials of the ruthenium complex were determined at 25°C to be E\ominus=0.27±0.01 V (in CH2Cl2) and −0.161±0.005 V (in CH3OH), relative to E\ominus(Fe(C5H5)2)+⁄0)=0.400 V.
The Ullmann Coupling Reaction of Axially Chiral (S)-2,2′-Bis(1-iodo-2-naphthyloxycarbonyl)-1,1′-binaphthyl
Authors: Miyano Sotaro , Shimizu Kunitoshi , Sato Shinya , Hashimoto Harukichi 
Published: July 2006

Abstract
The intramolecular Ullmann coupling of the title diester proceeded in low yield but with virtually complete asymmetric induction in joining the two naphthyl units leading to the 12-membered cyclic diester of (S,S)-configuration, which is the same diastereomer obtained from the reaction of (S)-2,2′-bis(1-bromo-2-naphthoyloxy)-1,1′-binaphthyl.
Electrogenerated Acid as an Efficient Catalyst for the Protection and Deprotection of Alcohols with Dihydropyran and Transesterification of Glyceride
Authors: Torii Sigeru , Inokuchi Tsutomu , Kondo Kazumi , Ito Hiroshi 
Published: July 2006

Abstract
Protection of alcohols with 3,4-dihydro-2H-pyran and hydrolysis of the resulting tetrahydropyranyl ethers are cleanly performed by using an electrogenerated acid (EG acid) as a catalyst. Transesterification of glyceride was also achieved with EG acid.
Synthesis of Licoisoflavone A and Related Compounds
Authors: Tsukayama Masao , Fujimoto Kunihiro , Horie Tokunaru , Masumura Mitsuo , Nakayama Mitsuru 
Published: July 2006

Abstract
2′,4′,5,7-Tetrahydroxyisoflavone was partially benzoylated with benzoyl chloride to give 7-benzoyloxy-2′, 4′,5-trihydroxyisoflavone. The condensation of the 7-(benzoyloxy)isoflavone with 2-methyl-3-buten-2-ol, followed by the hydrolysis of the resultant 3′-(3-methyl-2-butenyl)isoflavone gave licoisoflavone A. Its 5′-(3-methyl-2-butenyl) isomer was also synthesized from 5-benzoyloxy-2′,4′,7-trihydroxyisoflavone in a similar manner.
Characterization of α- and β-Dodecamolybdophosphate Complexes Formed in Aqueous Solutions Including Acetonitrile, Acetone, or Dioxane
Authors: Hori Toshitaka , Fujinaga Taitiro 
Published: July 2006

Abstract
On the basis of a spontaneous conversion reaction of molybdophosphate (formed in an aqueous medium including acetonitrile, acetone, or dioxane), the existence of β-modification of dodecamolybdophosphate has been substantiated. The conversion reaction was highly affected by the presence of the organic solvents. In the absence and/or the presence of the organic solvent of less than 20% by volume, the reaction proceeded instantaneously and, in consequence, β-modification practically did not exist, but α-modification existed entirely. Whereas, in the presence of the organic solvent ranging from 30 to 60%, β-modification was so stable, it could be observed for a fairly long duration. However, it was still thermodynamically unstable and finally converted to α-modification at a certain rate depending on the concentration of the organic solvent. With more of the organic solvent than 65%, the formation of β-modification and thence α-modification, were prohibited. As a result of these facts, α- and β-modifications were individually prepared in solutions consisting of 0.05 M Mo(VI)/1.2 M HCl/40% acetonitrile. On each modification thus formed, a chemical reduction (with such metals as nickel, iron, or lead) and solvent-extraction isolation (using chloroform as an auxiliary solvent) were performed. The inherent absorption spectra of the two modifications were clearly distinguished in both oxidized yellow and reduced blue forms. The utility of β-modification in a sensitive spectrophotometric determination of phosphate ion was also discussed.
Bilirubin in Aqueous Solution. Absorption Spectrum, Aqueous Solubility, and Dissociation Constants
Authors: Moroi Yoshikiyo , Matuura Ryohei , Hisadome Tetsuo 
Published: July 2006

Abstract
This report analyzes the change of both spectrum and solubility of bilirubin with pH in buffer solutions. Bilirubin (AH2) is a dibasic acid which dissociates by two steps (AH2\oversetK1\ightleftharpoonsAH1\oversetK2\ightleftharpoonsA) with increasing pH; the wavelengths at the resulting three isosbestic points are 457 nm (AH2 and AH1), 485 nm (AH1 and A), and 472 nm (A and AH2). The solubility increases with increasing pH, where the total concentration ([AH2]+[AH1]+[A]) changes subject to a second-order curve of 1/aH+. From the spectral change and the three coefficients of the solubility curve, K1 and K2 values were estimated to be (6.7±2.6)×10−7 and (3.4±1.0)×10−8, respectively. These dissociation constants are much smaller than those of aliphatic carboxylic groups, and the reason for it was discussed together with the values already reported and their reliability.
Preparation and Some Reactions of Diarylgermylenedialkali Metals
Authors: Mochida Kunio , Matsushige Naoki , Hamashima Mari 
Published: July 2006

Abstract
The reactions of diarylgermanes with alkali metals in HMPA/THF or THF were found to give the corresponding diarylgermylenedialkali metals in high yields. Diphenylgermylenedipotassium reacted with aryl halides or carbonyl compounds to give reduction products predominantly. With alkyl halides, diphenylgermylenedipotassium gave mainly substitution products.
Synthesis Utilizing Reducing Ability of Carbon Monoxide. New Methods for Synthesis of N-Substituted Selenoamides
Authors: Ogawa Akiya , Miyake Jun-ichi , Kambe Nobuaki , Murai Shinji , Sonoda Noboru 
Published: July 2006

Abstract
Convenient one-pot syntheses of N-substituted selenoamides (2) from nitriles, metallic selenium, carbon monoxide, water, and amines have been developed on the basis of an amino-group-exchange reaction of in situ formed N-unsubstituted selenoamides (1) with primary or secondary amines. The reactions consist of two processes, i.e., the formation of selenoamides 1 by the reaction of nitriles and H2Se formed from selenium, carbon monoxide and water, and the subsequent amino-group-exchange reaction of 1 with aliphatic amines. The obtained 2 are generally stable enough to be kept for several weeks under the atmosphere of nitrogen at 0 °C without any appreciable degradation. In the cases of primary amines, the corresponding selenoamides were also obtained from nitriles, selenium, carbon monoxide, and primary amines by a single-step mixing at the beginning of the reaction.
Synthetic Studies on Germacranolides. Synthesis of Optically Active 3-Oxygenated 13-Norheliangolides
Authors: Kuroda Chiaki , Nakamura Takayoshi , Hirota Hiroshi , Enomoto Katsumi , Takahashi Takeyoshi 
Published: July 2006

Abstract
(3R,6S,7S,1(10)E,4Z)- and (3R,6S,7S,1(10)E,4Z)-3-Methoxymethoxy-13-nor-1(10),4-germacradieno-12,6-lactones were synthesized from (−)-carvone, utilizing anionic oxy-Cope rearrangement to construct a ten-membered ring compound.
The Identification of the Compositions of the Compounds Formed in an Addition Reaction Involving Insoluble Substances
Authors: Hihara Goro , Shimizu Tadashi , Miyamae Hiroshi , Nagata Miharu 
Published: July 2006

Abstract
A method has been developed for the identification of the compositions of all the insoluble compounds which are formed in the reaction of an insoluble substance (A) with a soluble one (B). It consists of allowing a fixed amount of A to react with various amounts of B in a fixed volume of a solution, determining the concentrations of B(=[B]) remaining unreacted after the equilibrium is reached, and then finding the number of the formed compounds and their compositions from the variations in [B] on the basis of the phase rule. This method was applied to the reactions of PbI2 with diethylenetriamine (dien) and with 1,3-propanediamine (pren); the presence of the following addition compounds was found: PbI2·Y(dien) (Y=1⁄2 and 1) and PbI2·Y(pren) (Y=4⁄5, 1, and 2).
Bivalent Cobalt Complexes with 1-(2-Pyridylazo)-2-naphthol and Analogous Ligands
Authors: Mochizuki Katsura , Fujimoto Masatoshi 
Published: July 2006

Abstract
Bivalent cobalt complexes with the title ligands were synthesized, isolated, and characterized by absorption spectra and magnetic moments. It has been suggested that the cobalt(II) complexes have more flexible structures than the corresponding cobalt(III) complexes. The cobalt(II) complexes were found to be oxidized to the cobalt(III) complexes in DMSO in the presence of copper(II) ions. Cyclic voltammetry elucidated the reversible CoII/CoIII couples of the cobalt complexes in acetonitrile. The values of E1⁄2 for the CoII/CoIII couples were found to depend on the coordinating ligands. The relation between E1⁄2 and pKa of the ortho-hydroxyl group in the ligands was discussed.
Recovery of Heavy Metals with Calcium Silicon Alloy. IV. Stoichiometric Discussion of the Reduction of Lead(II), Nickel(II), Iron(III), and Mercury(II) Ions
Authors: Tokunaga Shuzo 
Published: July 2006

Abstract
The reduction of Pb2+ and Ni2+ ions to the metallic state with the Ca–Si alloy powder can be stoichiometrically interpreted by the following elementary reactions 1–4 including the decomposition of water, a side reaction:
d Ca0+Me2+=Ca2++Me0(1)
(Ca0+2Me2+=Ca2++2Mez−1)(1′)
Si0+2Me2++3H2O=H2SiO3+2Me0+4H+(2)
(Si0+4Mez++3H2O=H2SiO3+4Mez−1+4H+)(2′)
Ca0+2H2O=Ca2++H2+2OH−(3)
Si0+3H2O=H2SiO3+2H2(4)
The occurrence of a reaction other than the above ones was suggested for the reduction of Fe3+ to Fe2+ ion under strongly acidic conditions. The reduction of Pb2+ and Ni2+ ions proceeded very slowly. On viewing the equivalents oxidized, the contribution of Ca in the alloy to the overall reaction was greater than that of Si; Si scarcely participated at all in the reduction of Fe3+ ion. Based on the above elementary reactions, the reduction of Hg2+ ion was discussed stoichiometrically. Almost the same equivalents of Hg0 and HgI species formed in a 20-matom dm−3 Hg2+ solution, with an initial pH of 4.0. The contribution of Si to the reaction was greater than that of Ca.
Fe K-Edge XANES and EXAFS of the X-Ray Absorption Spectra of FeCl3 Aqueous Solutions. A Structural Study of the Solute, Iron(III) Chloro Complexes
Authors: Asakura Kiyotaka , Nomura Masaharu , Kuroda Haruo 
Published: July 2006

Abstract
The Fe K-edge spectra were measured on FeCl3 aqueous solutions by use of synchrotron radiation to reveal the solute structure from the analysis of Fe K-edge EXAFS and XANES. It is concluded that the solute exists mainly as [Fe(H2O)6]3+ but partially as [FeCl(H2O)5]3+ at FeCl3 concentration of 0.1–1 mol dm−3, and it exsits mainly as [FeCl2(H2O)4]+ at the concentration of 3–4 mol dm−3. In the diliquescent product of FeCl3, about a half of the solute is in the state of [FeCl4]− and the remaining half is likely to be in the state of [FeCl2(H2O)4]+. No indication was found for the dimer formation of FeCl3 even in the deliquescent product.
Elucidation of the Origin of Substituent Effects. Theoretical Investigation of Field Effect in Aliphatic Systems by ab initio Molecular Orbital Calculation Using Simple Models
Authors: Inamoto Naoki , Masuda Shozo , Niwa Jun 
Published: July 2006

Abstract
The electronic substituent effect in the aliphatic systems was investigated using ab initio calculation at STO-3G and 4-31G levels. The relative energy changes, δΔE, in isodesmic reaction of the 4-substituted bicyclo[2.2.2]octane-1-carboxylic acids were compared with those for 1-substituted bicyclo[2.2.2]octanes(XC8H13), CH3X, and H–X molecules perturbed with isolated pure point charges. The interaction energies between isolated dipole and point charge system, F–H···(±), were proportional to the reciprocal square of the distance between the center of dipole and the charge. Isodesmic reaction energies for the present systems at the distance longer than 5 Å can be practically explained by charge-dipole interaction. From the comparison of δΔE in XCH3···(±), XC8H13···(±), and XC6H5···(±) systems with those for X–H···(±), it was concluded that the pure field parameters for various substituents should be determined on the basis of the isodesmic reaction energy for X–H···(±) system. Correlations between δΔE in X–H···(±) system and the field parameters recently proposed, σF and σI(gas), were generally better in the cases calculated at 4-31G level than those at STO-3G level.
The Structure of Dichlorobis(l-proline)zinc(II)
Authors: Yukawa Yasuhiko , Yasukawa Noriko , Inomata Yoshie , Takeuchi Toshio 
Published: July 2006

Abstract
The title complex was prepared at pH 4.0. The crystal and molecular structures have been determined by X-ray diffraction. The crystals of ZnCl2(C5H9NO2)2, F.W.=366.55, were orthorhombic: space group P212121, a=13.527(3), b=16.263(3), c=6.598(1) Å, U=1451.4(5) Å3, Z=4, Dm=1.67 g cm−3, Dx=1.68 g cm−3, and μ(Mo Kα)=21.2 cm−1. The zinc atom is coordinated in a tetrahedral geometry to two chlorine atoms and the two carboxyl oxygen atoms of two l-proline ligands. Each l-proline is coordinated as a monodentate ligand.
The Synthesis and the Crystal and Molecular Structure of [Tris(dibutyl sulfoxide)bis(O,O′-diisopropyl dithiophosphato)neodymium(III)] [Tetrakis(O,O′-diisopropyl dithiophosphato)neodymium(III)] [Nd{(C3H7O)2PS2}2{(C4H9)2SO}3][Nd{(C3H7O)2PS2}4]
Authors: Ohki Yoshiyuki , Nakamura Masao , Suzuki Yasuo , Nagai Kiyofumi , Shimoi Mamoru , Ouchi Akira 
Published: July 2006

Abstract
The title complex has been synthesized, and its crystals and molecular structure has been determined by the use of the single-crystal X-ray-diffraction method. The crystal of Nd2C60H138O15P6S15, F. W.=2055.03, was monoclinic, with a space group of An; a=23.696(4), b=23.466(4), c=20.208(4) Å, β=111.22(2) °, Z=4, V=10475(4) Å3, Dm=1.30(3), Dx=1.30 Mg m−3, and μ(Mo Kα)=1.41 mm−1. The complex consists of cationic and anionic species, as is shown in the title. The metal atom of the cationic complex is hepta-coordinated and is in a pentagonal-bipyramidal geometry, while the anionic one is octa-coordinated and is in a dodecahedral geometry.
Cobalt(III) Complexes with Quadridentate Ligands. VI. The Preparation and Properties of “cis-β1” and β2-Isomers of the Salicylaldehydato(triethylenetetramine)cobalt(III) Complex
Authors: Yamamoto Yoshihisa , Toyota Eiko , Tsukuda Shoko 
Published: July 2006

Abstract
cis-β1 and β2-Salicylaldehydato(triethylenetetramine)cobalt(III) chloride dihydrate have been isolated from a reaction mixture of salicylaldehyde, cis-α or β-dichloro(triethylenetetramine)cobalt(III) chloride and Ag2O. The IR spectra of the complexes showed four strong absorption peaks in the 990–1100 cm−1 region. The complexes were assigned to the β-form. Their cis-β1 and cis-β2 configurations have been established by their 1H NMR spectra.
Utilization of “2-Pyrrolidone Hydrotribromide” in the Synthesis of Flavones
Authors: Takeno Noboru , Fukushima Tohoru , Takeda Shin-ichi , Kishimoto Kazuyasu 
Published: July 2006

Abstract
The reaction of flavanone with “2-pyrrolidone hydrotribromide” in tetrahydrofuran gave 3-bromoflavanone in a good yield. On the other hand, flavone was obtained in 97% yield when this reaction was carried out in dimethyl sulfoxide at 80 °C. Under the same conditions, most flavones were obtained from the corresponding flavanones in high purity and good yields.
The Reaction of Cyclopentanone with Carbon Disulfide and Glycine Esters
Authors: Fukada Naoaki , Yamamoto Kayoko 
Published: July 2006

Abstract
2-(Methoxy- and ethoxycarbonylmethylimino)cyclopentanecarbodithioic acids were synthesized from cyclopentanone, carbon disulfide, and glycine esters. In the presence of sulfur, glycine, alanine, and phenylalanine esters reacted to give the corresponding oxidatively coupled products of dithiocarboxylic acid.
Iodination of Benzene with Iodine and Metal Salts in Acidic Solvents
Authors: Shimizu Atsushi , Yamataka Kazunori , Isoya Toshiro 
Published: July 2006

Abstract
Iodobenzene was obtained by a reaction of benzene with molecular iodine in trifluoromethanesulfonic acid in oxygen atmosphere in the presence of vanadium salt as a catalyst. The method affords a new aromatic iodination process in which benzene is iodinated directly with molecular iodine.
Structural and Compositional Changes of Blue Orthorhombic Hydrogen Molybdenum Bronze, H0.30MoO3, by Vacuum Heating and Catalytic Activity for 1-Butene Isomerization
Authors: Sotani Noriyuki , Yoshida Noritetsu , Yoshioka Yukio , Kishimoto Shozo 
Published: July 2006

Abstract
Orthorhombic bronze, H0.30MoO3, was decomposed by vacuum heating to MoO2.86 With a rhombic MoO3 structure. The surface area increased slightly with the increase in the rhombic structure in which vacancies were produced. An approximate linear relationship was found between the catalytic activity of 1-butene isomerization and the hydrogen content(x) in the samples which were treated in air at 65 °C or in vacuo below 220 °C. On the other hand, the activity above 220 °C increased with the formation of vacancies.
The Reaction of [CoL2] or [CoL2(NO)] (L=4-Methyl-8-quinolinolate Ion) with Nitrogen Monoxide
Authors: Miki Eiichi , Tanaka Mikio , Saito Katsunori , Maejima Toshiaki , Mizumachi Kunihiko , Ishimori Tatsujiro 
Published: July 2006

Abstract
[Co(4mqn)2]·2H2O (4mqn=4-methyl-8-quinolinolate ion) reacted with nitrogen monoxide in CH2Cl2 or in DMF at room temperature to give [Co(4mqn)2(NO)] (1). [Co(4mqn)2]·2H2O and 1 reacted with nitrogen monoxide in 10 vol% pyridine–DMF and in pyridine at ca. 283–288 K to precipitate [Co(4mqn)2(NO)(py)] (2). When the reaction was carried out at ca. 293–303 K, [Co(4mqn)2(NO2)(py)] (3) instead of 2 was precipitated. From the filtrates, [Co(4mqn)2(NO3)(py)]·py·2H2O (4) was obtained. The gaseous product of the reactions giving 2 and 4, and 3 and 4, was dinitrogen oxide. The stoichiometries of the reactions in the pyridine–DMF and in pyridine were confirmed by mass analyses for the residual nitrogen monoxide and the produced dinitrogen oxide.
Cyclohepta[b][1,4]benzothiazines and Their Diazine Analogues. 1. Formation and Reactions of Cyclohepta[b][1,4]benzothiazines
Authors: Shindo Kimio , Ishikawa Sumio , Nozoe Tetsuo 
Published: July 2006

Abstract
2-Chlorotropone reacted with o-aminobenzenethiol to give 2-(o-aminophenylthio)tropone, which readily cyclized in dilute methanolic HCl to afford the title benzothiazine (9). Although 9 was stable under basic conditions, its N-methyl cation reversibly afforded the ring-opened 2-[o-(methylamino)phenylthio]tropone in alkali. Oxidation of 9 with hydrogen peroxide in methanol underwent a rearrangement reaction to afford (exclusively) phenothiazine and its 1-formyl derivative. A similar H2O2 oxidation of 10-methoxycyclohepta[b][1,4]benzothiazine gave mainly methyl phenothiazine-1-carboxylate and 3-formyl-1-methoxy phenothiazine. Further oxidation of these products with hydrogen peroxide yielded thier S-oxides and S,S-dioxides. The reactivities of these cycloheptabenzothiazines are discussed in connection with those of the O- and N-analogues.
Reactions of Tropone Tosylhydrazone Sodium Salt with Anthracene, 1,3-Diphenylisobenzofuran, and Phenylacetylene: [2+2] and [4+2] Type Cycloaddition Reactions of Cycloheptatrienylidene or 1,2,4,6-Cycloheptatetraene
Authors: Saito Katsuhiro , Omura Yoichi , Mukai Toshio 
Published: July 2006

Abstract
The reaction of tropone tosylhydrazone sodium salt (1) with anthracene gave a [4+2]-type adduct and the reaction of 1 with 1,3-diphenylisobenzofuran afforded endo- and exo-[4+2]-type adducts as well as a heptafulvene derivative. The reaction of 1 with phenylacetylene yielded a [2+2]-type adduct, which rearranged into 2-phenylindene upon heating. The addition reactions are thought to proceed via the allene intermediate, 1,2,4,6-cycloheptatetraene, which is a valence-bond isomer of the carbene intermediate, cycloheptatrienylidene, initially generated by the pyrolysis of 1. The photoreaction of adduct 3 with a high-pressure mercury lamp afforded a ring-closure product via the photobicyclization reaction of the cycloheptatriene moiety of the adduct. Thermal interconversions between the three products of the reaction of 1 with 1,3-diphenylisobenzofuran were investigated.
Chemoselective Reduction of Phenyl Ketones with Amino Alcohol–Borane Complexes
Authors: Itsuno Shinichi , Wakasugi Takashi , Ito Koichi , Hirao Akira , Nakahama Seiichi 
Published: July 2006

Abstract
A new reducing agent was prepared from borane and amino alcohols. The reagent is very effective for chemoselective reduction of ketones in the presence of esters, oxime ethers, tertiary amides, nitriles, halides, and acyl chlorides. The polymeric reagent prepared from borane and polymer-supported amino alcohol was also prepared easily. Aldehydes are highly selectively reduced to primary alcohols in the presence of ketone with the polymeric reagent. Simple filtration separated cleanly the unchanged ketone from the polymeric reagent which gave, after hydrolysis, only primary alcohol as the product. The polymeric reagent was regenerated by treatment with borane and could be reused.