巻号一覧
前身誌
39 巻, 10 号
選択された号の論文の29件中1～29を表示しています
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岡原 光男, 益山 新樹1990 年 39 巻 10 号 p. 710-716
発行日: 1990/10/20
公開日: 2009/10/16
ジャーナル フリーThree types of surfactants such as amphipathic crown ethers, poly (oxyethylene) types of nonionic surfactants, and terminal modified alcohol ethoxylates, which have a complexing ability with metal ions, are reviewed with 41 references.抄録全体を表示PDF形式でダウンロード (873K) -
佐治 哲夫1990 年 39 巻 10 号 p. 717-722
発行日: 1990/10/20
公開日: 2009/10/16
ジャーナル フリーThis review describes the preparations and the properties of organic thin films by the controlled-potential electrolysis during the oxidation of an aqueous solution containing surfactants with a ferrocenyl moiety and organic compound incorporated in micelles (Scheme I) or dispersed organic particles using the surfactants (Scheme II).Films of azo dyes, 4, 4'-didodecylviologen and some polymers are prepared through Scheme I. Films of phthalocyanine compounds, MPc (M=H2, Cu, Mg, and AlCl), and halogen derivatives of CuPc, are prepared through Scheme II. The scanning electron micrograph studies show that crystal size of the film increases with electrolysis time in the case of Scheme I and is the same for the added particles in the case of Scheme II.抄録全体を表示PDF形式でダウンロード (1078K) -
前田 滋, 竹下 寿雄1990 年 39 巻 10 号 p. 723-728
発行日: 1990/10/20
公開日: 2009/10/16
ジャーナル フリーCompounds having chelating ligands and surface activity are reviewed. Hydrophobic groups were introduced into the chelate ligands such as ethylenediamine, polyethylene-polyimines, ethylenediaminetetraacetic acid (EDTA), diethylenetriaminepentaacetic acid (DTPA), aminophosphonic acids, and 2-salicylic acid. Carbon - and nitrogen-substitution products or ester-and amide-derivatives of EDTA and DTPA were found to form metal chelates and have excellent surface activities. Some of them were applied to additives for coatings, coal slurry fuels and anti-tumor drugs.抄録全体を表示PDF形式でダウンロード (909K) -
関根 達也, 長谷川 佑子1990 年 39 巻 10 号 p. 729-735
発行日: 1990/10/20
公開日: 2009/10/16
ジャーナル フリーThe relationship between the nature of organic solvents and the extractability of metal complexes has been reviewed. The solvation of metal complexes in organic solvents, which is one of the most important factors to improve the extractability, has also been explained. In addition, recent topics such as adsorption of extractants and metal complexes on the liquid-liquid interface, and the oxidation of metal ions in complexes in organic solvents are described and the role of such phenomena on the solvent extraction of the metal is considered.抄録全体を表示PDF形式でダウンロード (1012K) -
小出 善文, 山田 仁穂1990 年 39 巻 10 号 p. 736-743
発行日: 1990/10/20
公開日: 2009/10/16
ジャーナル フリーChelating surfactants have been prepared and applied as ion-flotation collectors. Metal ions are floated by scum flotation using the surfactants in a HLB range of 4-14, which are regulated by varying the alkyl group. The selective flotation from the metal ions mixture has been attributable to the smaller HLB of the metal complexes. The HLB values of 16-24 are suitable for foam fractionation and those of 1-6 are for solvent sublation.抄録全体を表示PDF形式でダウンロード (1113K) -
太垣 和一郎, 荻野 健治1990 年 39 巻 10 号 p. 744-752
発行日: 1990/10/20
公開日: 2009/10/16
ジャーナル フリーZinc ion complexes constitute active sites of a number of zinc proteases like Carboxypeptidase A and Thermolysin. We have prepared a number of lipophilic imidazole ligands, having a hydroxyl function, for mimicking metalloenzymes. Cationic, anionic and non-ionic micellar systems are highly effective in the activation of ligand : metal ion complexes for ester hydrolyses. Ligand-metal ion (1 : 1 and/or 2 : 1 ratio) complexes are active catalysts via the dissociation of hydroxyl groups. Surfactant imidazole ligands were also examined. Related literatures are also briefly reviewed.抄録全体を表示PDF形式でダウンロード (1171K) -
吉川 貞雄1990 年 39 巻 10 号 p. 753-757
発行日: 1990/10/20
公開日: 2009/10/16
ジャーナル フリーIt is well known that nutritive organic substrates, such as proteins, carbohydrates and lipids etc ., are fairly reactive compounds whose reactions are very selective. Therefore it seems interesting for us to investigate the catalytic reaction of metal complexes coordinated with nutritive organic substrates as a mimetic sample of enzymatic reaction.
For one example, it is dealt with the transformation of carbohydrate by utilizing nickel complexes with various polyamines and counter anions. Important informations are as follows.
Aldoses were rapidly epimerized at C-2 by nickel (II) -diamine complexes. Recently we studied this reaction under various conditions, which are ligands, anions, reaction temperature and the molar ratio of ligand to metal ion.抄録全体を表示PDF形式でダウンロード (664K) -
青山 安宏1990 年 39 巻 10 号 p. 758-763
発行日: 1990/10/20
公開日: 2009/10/16
ジャーナル フリーRh (III) porphyrins having 2-hydroxynaphthyl or 8-quinolyl groups at the 5-and 15-meso positions exhibit novel bifunctional cooperation of the central Rh (III) ion and the naphthol hydroxyl or quinolyl nitrogen. Thus, ketones undergo a facile enolization as a result of acidbase type cooperation. Amides, on the other hand, undergo a facile acyl substitution in the presence of Ag+ ions, as effected by a double Lewis-acid catalysis. The bis (hydroxynaphthyl) system also fixes amino acids and esters via simultaneous two-point interacion involving the Rh (III) -NH2-coordination and OH-CO2R hydrogen bonding (R=H or CH3). Some other examples of related multi-point molecular recognition using modified porphyrin systems are also presented.抄録全体を表示PDF形式でダウンロード (832K) -
西出 宏之, 川上 浩良, 土田 英俊1990 年 39 巻 10 号 p. 764-769
発行日: 1990/10/20
公開日: 2009/10/16
ジャーナル フリーMolecular oxygen coordinates to modified metalloporphyrin complexes selectively, rapidly and reversibly. Flexible membranes are prepared by combining these metalloporphyrin complexes with polymers. The complex residues maintain their oxygen-coordinating capability even after the fixation in the solid state membrane. Oxygen permeation through the membrane is facilitated due to the reversible and rapid oxygen-coordination to the fixed complexes and is in accordance with a dual-mode transport model. The (oxygen/nitrogen) permselectivity is greater than 10 in the membrane composed of cobaltporphyrin complexes with enhanced kinetic parameters.抄録全体を表示PDF形式でダウンロード (853K) -
有元 佐賀恵, 早津 彦哉1990 年 39 巻 10 号 p. 770-776
発行日: 1990/10/20
公開日: 2009/10/16
ジャーナル フリーBlue cotton is cotton bearing covalently linked blue pigment, copper phthalocyanine trisulfonate. Blue cotton can absorb polycyclic aromatic compounds selectively, and has been used extensively for isolating mutagens and carcinogens in the environment. This reviw providesa description of the present status of this method.抄録全体を表示PDF形式でダウンロード (910K) -
田中 晃二1990 年 39 巻 10 号 p. 777-783
発行日: 1990/10/20
公開日: 2009/10/16
ジャーナル フリーAmmonia is the only inorganic nitrogen molecule which can be metabolized by organisms. Most of higher plants and microorganisms which are not provided with the ability of N2 fixation, therefore, reduce NO3- and NO2- to NH3 (assimilatory reduction). On the other hand, some bacteria reduce those ions to N2 (dissimilatory reduction). Thus, the amounts of inorganic nitrogen molecules are regulated by nitrogen cycle, where molybdenum and iron atoms play key roles as the active center. This review describes chemical simulation of nitrogen cycle catalyzed by not only Mo complexes but also MoFeS and FeS clusters.抄録全体を表示PDF形式でダウンロード (1001K) -
中野 稔, 桜井 民子1990 年 39 巻 10 号 p. 784-790
発行日: 1990/10/20
公開日: 2009/10/16
ジャーナル フリーFree iron could easily be chelated with phosphate moiety in biomembrane surface and reduced enzymatically by certain membrane components or non enzymatically by ascorbate.
A model membrane lipid peroxidation induced by iron-adriamycin or iron-glycated peptide was discussed. Most probable active species for their lipid peroxidations could be iron oxygen complexes, such as FeV= O and Fe IV=O type compounds. Heme-compounds, hemoglobin, cytochrome P-450 and hematin could mainly act to decompose lipid hydroperoxides to their corresponding alkoxy radicals and hydroperoxy radicals, by which lipid peroxidation should be promoted.抄録全体を表示PDF形式でダウンロード (996K) -
桜井 弘1990 年 39 巻 10 号 p. 791-797
発行日: 1990/10/20
公開日: 2009/10/16
ジャーナル フリーVanadium distributes widely in litoshere, hydropere and biosphere. In mammalian tissues, vanadium is present at concentrations of 10 μ M or less, and this metal ion is proposed to be an essential trace element. Numerous physiological roles of vanadium have been reported at in vitro andin vivo levels. Since the finding that vanadate (+5 oxidation state of this metal) is a potent inhibitor of the sodium pump (Na+, K+-ATPase), the effects of vanadium have been explained in terms of its biochemistry. In this review the short history of the investigations, the chemistry, the metabolism, the physiological roles and the pharmacological effects of vanadium along with the vanadium-containing proteins and natural products are described.抄録全体を表示PDF形式でダウンロード (1044K) -
安田 源1990 年 39 巻 10 号 p. 798-804
発行日: 1990/10/20
公開日: 2009/10/16
ジャーナル フリー有機物質と無機物質の境界領域にある有機金属化合物や金属錯体には従来に無い特異な反応や物性が期待でき, これらに潜在する新機能の開発を目的とした研究が内外で精力的に行われている。現在は伝導性のある金属及び金属化合物薄膜や超微粒子合成といったハイテク関連分野の研究に焦点が集まっている。ここでは有機金属化学の新素材としての利用法について主に1988年以降の動向を概観する。抄録全体を表示PDF形式でダウンロード (1042K) -
高橋 成年, 松原 浩, 香春 武史1990 年 39 巻 10 号 p. 805-811
発行日: 1990/10/20
公開日: 2010/01/29
ジャーナル フリー物質の状態は, 気体, 液体, 固体の3状態に限られたものではなく, それらの中間の状態に属するものもある。液晶はまさにそれで, 液体と固体の中間の状態として理解される。形態は液体, 従ってどの様な形状でもとりうることや光学的異方性を示し, かつ電場に応答するなどの性質がマイクロエレクトロニクス用表示材料としての要求に合致し, 種々の表示用に, 更に今日ではテレビやマイコンなどの大型画面表示にも利用され始めたのはご存知の通りである。液晶は, このような表示材料以外にも, 他の材料には見られない特徴を持つ中間相材料として, 各種のセンサーや光スイッチなどにも利用されている。しかし, 最近の材料科学の進展に伴って, 液晶にも更に高度な機能, 極限的な性質が求められている。それらの要求に対応すべく, 強誘電性液晶や反強誘電性液晶などについての研究が盛んになってきた。
液晶を初めて見いだしたのは生物学者であり, 表示材料としての利用を可能にしたのは物理と化学両分野からの研究成果である。液晶の研究は有機金属化学とも大いに関連を持ち始めた。一つには有機金属化学の分野で見いだされた新しい有機合成法が液晶の合成に応用され始めた点を挙げることができる。液晶化合物には, 後述のように, 相当複雑な分子構造が要求されるが, その構造を構築するために, 例えばパラジウムやニッケル触媒を用いるクロスカップリング反応あるいは不斉合成反応などは極めて有用である。他方, 有機金属の物性研究の一つとして新規な機能性液晶を目指した有機金属液晶の開発研究が始められている。金属の特性が液晶の高機能化に結び付くことが期待できるからである。本稿では, 後者の話題を取り上げ, 筆者らが行っているホウ素を含む液晶を中心に, 有機金属液晶の構造とその性質についての研究を紹介しよう。抄録全体を表示PDF形式でダウンロード (907K) -
高橋 保1990 年 39 巻 10 号 p. 812-817
発行日: 1990/10/20
公開日: 2009/10/16
ジャーナル フリーDevelopment of functional materials by taking advantage of properties of organometallic compounds is discussed in this article.
Metals, metal oxides, and multimetal oxides are prepared by the CDL (chemical deposition in liquid phase) method by using liberation of ligands, reductive elimination, and complexation reactions of organometallic compounds. This method is applied for metal coating of carbon fibers. The advantages of metal coating using organometallic compounds by the CDL method over conventional melted-metal coating method or the CVD method are discussed.抄録全体を表示PDF形式でダウンロード (933K) -
福田 豊1990 年 39 巻 10 号 p. 818-824
発行日: 1990/10/20
公開日: 2009/10/16
ジャーナル フリーWe have synthesized various kinds of mixed ligand complexes of Ni (II) and Cu (II) which contain N-alkylated ethylenediamine (diam) and β-diketonate (dik) : general formula M (dik) (diam) X, where X is an anion with or without coordination ability. These complexes and [Fe (CN) 2 (phen) 2] synthesized by Schilt show the characteristic solvatochromism in various organic solvents due to the donor and acceptor abilities of solvents.
These complexes are classified into two types as a color indicator of the solvent polarity : (1) donor indicators, [Ni (dik) (diam)] X and [Cu (dik) (diam)] X where X is a no-coordinating anion, (2) acceptor indicators, [Cu (dik) (diam) X] with a coordinating monodentate anion and [Fe (CN) 2 (phen) 2].抄録全体を表示PDF形式でダウンロード (941K) -
白井 汪芳1990 年 39 巻 10 号 p. 825-830
発行日: 1990/10/20
公開日: 2009/10/16
ジャーナル フリーAn oxidized enzyme consists of an iron compound called heme and huge proteins. It plays the role on antidote against an invading poisonous substance in the body by activating oxygen in the blood. We have been studied on the model reaction of these enzymes using metallophthalocy-anine derivatives and their polymers. This type artificial enzymes act on substances with strong odor. A new type odor removers using these artificial enzyme by biomimetic effects have been described.抄録全体を表示PDF形式でダウンロード (868K) -
小坂田 耕太郎, 山本 隆一1990 年 39 巻 10 号 p. 831-836
発行日: 1990/10/20
公開日: 2009/10/16
ジャーナル フリーRecent studies on transition metal complexes having sulfur-containing ligands are reviewed. Thiophene formed stable π-complexes with transition metals such as Mn, Ru and Rh. Studies on reactivities of the thiophene complexes and of dinuclear molybdenum sulfide complexes revealed detailed mechanism of heterogeneous hydrodesulfurization of organic sulfur compounds. Hexanuclear sulfide clusters of Mo and W, prepared by reductive coupling of trinuclear clusters, show similar structure to Chevrel compounds. Photolysis or thermolysis of thiolato complexes of Zn and Cd caused C-S bond cleavage in the thiolate ligands to give the corresponding metal sulfides.抄録全体を表示PDF形式でダウンロード (878K) -
三上 幸一, 寺田 真浩, 中井 武1990 年 39 巻 10 号 p. 837-845
発行日: 1990/10/20
公開日: 2009/10/16
ジャーナル フリーA chemist-made asymmetric catalyst (“chemzyme”) for abiological transformations could be complementary to a god-made asymmetric catalyst (enzyme) for biological transformations. Thus, the development of asymmetric catalysis for abiogenetic-type reactions, carbon-carbon bond formations in particular, is the most challenging and formidable endeavor for synthetic organic chemists. Described herein is the development of the chiral titanium catalyst, prepared in the presence of molecular sieves (MS 4 A), for the enantiocontrol in carbonyl-ene reactions. The specific role of MS (zeolite), “positive” nonlinear effect, and the asymmetric catalyst-based diastereocontrol (double asymmetric induction and kinetic resolution) are also detailed.抄録全体を表示PDF形式でダウンロード (1107K) -
林 民生, 伊藤 嘉彦1990 年 39 巻 10 号 p. 846-851
発行日: 1990/10/20
公開日: 2009/10/16
ジャーナル フリーAsymmetric aldol reaction of α-isocyanocarboxylates with aldehydes was catalyzed by gold- (I) complex coordinated with a chiral ferrocenylphosphine ligand containing (dialkylaminoethyl) amino group on the ferrocene side chain, which gave optically active (up to 98% ee) 5-alkyl-trans-4-methoxycarbonyl-2-oxazolines with high enantio-and diastereoselectivity in a quantitative yield. The optically active oxazolines were readily converted into β-hydroxy-α-amino acids and their derivatives.抄録全体を表示PDF形式でダウンロード (738K) -
丸岡 啓二, 山本 尚1990 年 39 巻 10 号 p. 852-857
発行日: 1990/10/20
公開日: 2009/10/16
ジャーナル フリーThe utility of chiral Lewis acid catalysts in organic synthesis has been increasingly important in recent years. This review describes how we have succeeded to design a new, chiral organoaluminum reagent as a chiral Lewis acid catalyst in the asymmetric hetero-Diels-Alder reaction of siloxydienes and aldehydes. Based on our conceptually new enantioselective activation of carbonyl moieties, exceptionally bulky, chiral organoaluminum reagents of type (R) -4 and (S) -4 can be successfully synthesized in optically pure forms from trimethylaluminium and (R) - (+) - or (S) - (-) -3, 3'-bis (triarylsilyl) binaphthol, respectively.抄録全体を表示PDF形式でダウンロード (763K) -
香月 勗1990 年 39 巻 10 号 p. 858-865
発行日: 1990/10/20
公開日: 2009/10/16
ジャーナル フリーEpoxide and vicinal diol can be converted under mild conditions into manifold functionalities and, therefore, have been wildly used as intermediary functionalities in organic synthesis. Although various methodologies for the introduction of these oxygen functionalities have been developed, oxidation of olefinic double bond is most practical from the viewpoint of easy availability of olefinic compounds and mildness of the reaction. In this article, recent development in asymmetric transition-metal catalyzed epoxidation and dihydroxylation is described.抄録全体を表示PDF形式でダウンロード (899K) -
高谷 秀正, 太田 哲男, 真島 和志1990 年 39 巻 10 号 p. 866-874
発行日: 1990/10/20
公開日: 2009/10/16
ジャーナル フリーAsymmetric catalytic hydrogenation and hydrogen transfer reactions of various functionalized olefins and ketones by use of BINAP-Ru (II) and BINAP-Rh (I) complexes have been reviewed. These asymmetric transformations have provided us new efficient routes to a variety of optically active organic compounds with important biological activity. Recent advances in the related field have been briefly summarized.抄録全体を表示PDF形式でダウンロード (1230K) -
細見 彰, 柳 利治1990 年 39 巻 10 号 p. 875-880
発行日: 1990/10/20
公開日: 2009/10/16
ジャーナル フリーThis paper describes syntheses of highly coordinate organosilicon compounds and their application to regio-, stereo- and chemoselective organic synthesis which are recently developed. Topics are (1) the role of highly coordinate silyl intermediates on the reaction of organosilicon compounds with nucleophiles, (2) electrophilic cleavage of silicon-carbon bond and its application to functional group transformation, (3) preparations of pentacoordinate allylsiliconates as useful and storable reagents for regio-, chemo-, and stereoselective allylations of carbonyl compounds, which are interpreted by a six-membered cyclic transition state, (4) cross-coupling reactions of highly coordinate organosiliconates with organic iodides and triflates catalyzed by a palladium complex, and finally (5) chemo-and stereoselective, and asymmetric reductions of carbonyl compounds using hydridosiliconates.抄録全体を表示PDF形式でダウンロード (989K) -
山本 嘉則, 根本 尚夫, 井深 俊郎1990 年 39 巻 10 号 p. 881-887
発行日: 1990/10/20
公開日: 2009/10/16
ジャーナル フリーRecent progress of our research about organocopper-Lewis acid complexes is summarized. The reaction of cyanocopper-boron trifluoride complexes with γ-mesyloxy-α, β-unsaturated esters gives α-alkylated-β, γ-unsaturated esters with very high 1, 3-chiral transfer (>99 : 1). In contrast, the reaction of γ-benzyloxy-α, β-unsaturated esters with various organocopper reagents proceeds in a 1, 4-addition manner to give the β-alkylated product. The diastereoselec-tivity is controlled by geometry of the carbon-carbon double bond. The diastereoselectivity in the reaction of γ-alkyl-α, β-unsaturated esters and related Michael acceptors highly depends upon the types of copper reagents. The syn-diastereoselectivity is observed with reagents which possess relatively high oxidation potential;cuprates or higher order cuprates produce the syn-diastereoselectivity. The anti-diastereoselectivity, which is expected from an ordinary Felkin-Anh model, is observed with the reagents having lower oxidation potential.抄録全体を表示PDF形式でダウンロード (935K) -
淵上 寿雄1990 年 39 巻 10 号 p. 888-894
発行日: 1990/10/20
公開日: 2009/10/16
ジャーナル フリーElectroorganic reactions using transition metal complexes attract much attention due to their unique high selectivities. This review is organized under the following headings.
1 Introduction
2 Indirect Electroorganic Reactions Using Transition Metal Complexes
2·1 Co-Complexes
2·2 Ni-Complexes
2·3 Pd-Complexes
2·4 Cu-Complexes
2·5 Zn-Complexes
2·6 Fe (CO) 5-Complex
2·7 Mn-Porphyrin Complexes
2·8 Hg-Complexes
3 Direct Electrolytic Reactions of Transition Metal Complexes
4 Concluding Remarks抄録全体を表示PDF形式でダウンロード (1003K) -
曽我 和雄, 塩野 毅1990 年 39 巻 10 号 p. 895-901
発行日: 1990/10/20
公開日: 2009/10/16
ジャーナル フリーThe numerous improvements for the Ziegler-Natta catalysts have led to the development of MgCl2-supported catalysts modified by Lewis bases endowed with high activity and stereospecificity. The homogeneous catalytic systems composed of cyclopentadienyl derivatives of transition metals and cyclic oligomers of methylaluminoxane have been recently found to be capable of polymerizing olefins with extremely high yields.
This paper describes some of the most significant aspects regarding the polymerization and copolymerization of olefins over these catalytic systems.抄録全体を表示PDF形式でダウンロード (1152K) -
相田 卓三1990 年 39 巻 10 号 p. 902-908
発行日: 1990/10/20
公開日: 2009/10/16
ジャーナル フリーThe present paper describes novel strategy for control of synthetic reactions by metalloporphyrins. Aluminum porphyrins have been found to be very effective initiators for living polymerizations of a wide variety of monomers to give polymers of uniform, controlled molecular weight. A novel concept, “immortal polymerization” has been established, which is of much use for elaborate molecular design of polymer materials. Photochemical fixations of carbon dioxide as a CI source for organic syntheses have been also achieved by using aluminum porphyrins. A highly stereoselective reaction has been observed in the reduction of ketones with alcohols catalyzed by a chloroaluminum porphyrin with Lewis acid character. Zinc N-substituted porphyrins as initiators have provided the first example of photo-induced living polymerization of epoxides. Novel chiral porphyrins and metalloporphyrins with molecular asymmetry have been synthesized and resolved.抄録全体を表示PDF形式でダウンロード (894K)
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