巻号一覧
45 巻, 9 号
選択された号の論文の11件中1～11を表示しています
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小田 良平1987 年 45 巻 9 号 p. 822-836
発行日: 1987/09/01
公開日: 2009/11/13
ジャーナル フリーThe contents of this article are as follows :
1. Some new heat resistant polymers and the improvement methods of their processabilities.
2. Some new conductive polymers.
3. Some new polymers with chiral pendant.
In each section the following three points are taken inconsideration as key point.
(a) The starting compounds are easily available.
(b) The synthetic methods must be new.
(c) The obtained results are good or excellent.
Any other research papers, which do not match with these three key points, are all omitted.抄録全体を表示PDF形式でダウンロード (1328K) -
ディーター ヴェーレ, 金子 正夫1987 年 45 巻 9 号 p. 837-849
発行日: 1987/09/01
公開日: 2009/11/13
ジャーナル フリーポルフィリン類縁体であるフタロシアニンの生成,構造にはじまり,酸化還元と触媒特性,機能素材としての応用について述べてきた。化学のみならず,材料や物理の分野,あるいはこれらの境界領域へと拡がりつつあるフタロシアニンについて,限られた紙数で各項目について充分な記述はできなかったが,概要を把握して頂けたら幸である。
既に塗料や電子材料として実用化されているフタロシアニンは,その耐久性や興味深い特性からみても,新しい有機系機能素材のエース的存在でもある。生物が長い進化の過程でポルフィリン類を機能素材として取り入れて高度な機能を達成したように,フタロシアニンも未来の科学とファインテクノロジーにおいて,枢要な位置を占めることと思われる。抄録全体を表示PDF形式でダウンロード (1534K) -
小松 紘一1987 年 45 巻 9 号 p. 850-862
発行日: 1987/09/01
公開日: 2009/11/13
ジャーナル フリーThis article deals with the recent development in the synthetic study of hydrocarbon systems composed of a stable carbocationic unit as an acceptor and a neutral π-electronic unit as a donor. Synthesis of such systems, which are defined as “undissociable charge-transfer (CT) complexes”, is important in clarifying the intramolecular π-electronic interaction in the corresponding neutral systems and correlating it with the molecular geometry. The reported carbocations are roughly classified according to the dihedral angle between the donor and acceptor units as follows : [nm] cyclophane systems, 1, 8-disubstituted naphthalenes, janusene systems, 1, 2-disubstituted benzenes, and bicyclic systems related to triptycene or barrelene. The structural effects upon the observed intramolecular CT absorption, and upon the cation stabilization by through-space π-electron donation, are discussed together with the synthetic method for each of the cations. Some limited examples of the carbanions, which might have the intramolecular π-electronic interaction, are also surveyed.抄録全体を表示PDF形式でダウンロード (1651K) -
鹿島 長次, 田陦 忠国1987 年 45 巻 9 号 p. 863-872
発行日: 1987/09/01
公開日: 2009/11/13
ジャーナル フリーAs the analogues of acylimidazoles and β-aminoenones, the synthesis and the chemical properties of β-imidazolylenones were reviewed. The synthetic routes from β-haloenones, ynones and α, β-dibromoketones were described. By the reaction with pyrrolidine, the titled compounds are reactive as much as the β-haloenones. The quaternarization of the titled compounds by the treatment with methyl iodide increases the reactivity to the nucleophiles. As the nucleophiles, primary alcohols, phenols, thiols, amines, Grignard reagents and sodium borohydride are employed, and the replaced produts are obtained regioselectively. Also the titled compounds were shown to be useful for the starting materials of the various heterocycles by the treatment with the ambident nucleophiles such as hydroxylamine, hydrazines and ureas. The application of the synthetic procedure for β-chloroenones β-benzimidazolylenones gives β, β-diazolylenones, which were demonstrated as the good precursor of the acylketene derivatives. In conclusion, the titled compounds were shown to be much useful for the syntheses of β-substituted enones and various heterocycles.抄録全体を表示PDF形式でダウンロード (1070K) -
エナンチオ, ジアステレオ異性体の観点より西村 吉雄1987 年 45 巻 9 号 p. 873-887
発行日: 1987/09/01
公開日: 2009/11/13
ジャーナル フリーThis article describes the syntheses and the relationships between structure and antitumor activity of pyrrolizidine alkaloid (indicine N-oxide), lignan lactone glycoside (etoposide) and their related compounds from the standpoint of diastereomer and enantiomer.
Total syntheses of indicine N-oxide, its diastereomer (intermedine N-oxide) and their enantiomers have been achieved in a totally stereospecific fashion through a sequence involving as the key steps (a) the enantioselective synthesis of retronecine and its enantiomer, (b) the enantioselective synthesis of (+) -trachelanthic acid and its enantiomer, and (c) a combination of each segments.
Syntheses of all four possible diastereomers of etoposide and its aminoglycosidic analogues have been achieved via optical resolution of (±) -podophyllotoxin by glycosidation with D- and L-sugars.抄録全体を表示PDF形式でダウンロード (1548K) -
北爪 智哉, 山崎 孝1987 年 45 巻 9 号 p. 888-897
発行日: 1987/09/01
公開日: 2009/11/13
ジャーナル フリーIn fluorine chemistry, considerable attention has been focussed on the search for the chiral synthetic tools for the preparation of functional materials such as ferroelectric liquid crystals and biopolymers. This article describes new catalytic reactions of the hydrolytic enzymes, i.e. the enzyme-assisted addition reaction to introduce a center of chirality into fluoro compounds.抄録全体を表示PDF形式でダウンロード (1067K) -
論理性を目指した構造決定橘 和夫1987 年 45 巻 9 号 p. 898-908
発行日: 1987/09/01
公開日: 2009/11/13
ジャーナル フリーTwo classes of shark repellent factors have been isolated, guided by their ichthyotoxicity, from the defense secretions of two species of soles. One class comprises series of steroid monoglycosides, namely, pavoninins from a western Pacific species, Pardachirus pavoninus, and mosesins from the other in the Red Sea known as Moses sole, P. marmoratus. The other class consists of a series of surfactant peptides of 33 amino acid residues, pardaxins. This account deals with structure elucidation of these factors, where emphasis is put on the process from inference of chemical structures by spectroscopic and other customary techniques to their establishment by design of unconventional but firmly corroborative experiments. Diverse bioactivity of these factors is also discussed based on rationale with their amphiphilic structures, which are destined to interact with biological lipid bilayer membranes.抄録全体を表示PDF形式でダウンロード (1508K) -
今村 寿一, 青葉 千春, 小島 邦彦1987 年 45 巻 9 号 p. 909-913
発行日: 1987/09/01
公開日: 2009/11/13
ジャーナル フリーTetramethylammonium hydroxide (TMAH) is a relatively strong base among organic compounds, and decomposes at 130-140°C into gaseous substances (Me3N, Me2O, MeOH, and H2O). TMAH has been prepared by alkali treatment of tetramethylammonium chloride (TMAC) obtainable from trimethylamine and methyl chloride, but use is made recently of developer electrolysis of TMAC in the presence of ion exchange membrane. The latter method gives rise to a highly pure TMAH aqueous solution free from chloride anions. TMAH currently finds some utilities in the production of highly functional materials such as developer for positive-working photoresist and the surface treatment of fibers, glasses, and plastics, and also as reagent for the methyl esterification of fatty acids and phospholipids, reagent for organic synthesis and preparation of catalysts, etc.抄録全体を表示PDF形式でダウンロード (558K) -
根河 雅一1987 年 45 巻 9 号 p. 914-915
発行日: 1987/09/01
公開日: 2009/11/13
ジャーナル フリー -
庄司 進1987 年 45 巻 9 号 p. 916-917
発行日: 1987/09/01
公開日: 2009/11/13
ジャーナル フリー現在この名称で市販されているアルコールには直鎖型のものと分岐型のものの2種類があるが, 本稿では後者を対象として記述する。抄録全体を表示PDF形式でダウンロード (167K) -
金子 正夫, 小松 紘一, 西村 吉雄, 橘 和夫, 大西 真由美1987 年 45 巻 9 号 p. 918
発行日: 1987/09/01
公開日: 2009/11/13
ジャーナル フリーPDF形式でダウンロード (141K)
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