著者

Kei Gotot Takayuki Kawashima

出版者

The Society of Synthetic Organic Chemistry, Japan

雑誌

有機合成化学協会誌 (ISSN:00379980)

巻号頁・発行日

vol.63, no.11, pp.1157-1170, 2005-11-01 (Released:2009-11-13)

参考文献数

52

被引用文献数

6 6

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Several kinds of bowl-type molecules were designed for regulation of the reactivities of the functional groups in their cavities, especially for kinetic stabilization of highly reactive species which have been difficult of access by conventional methods. The “peripheral steric protection” by these molecular cavities effectively prevents the bimolecular decomposition of the reactive species such as dimerization or self-condensation, and enabled the isolation of various species including a sulfenic acid, a selenenic acid, an S-nitrosothiol, and a Se-nitrososelenol, which have been known as important but elusive intermediates in biological reactions. Utilization of the molecular bowls as the ligands for transition metal complexes is also described.

著者

赤井 周司

出版者

公益社団法人 有機合成化学協会

雑誌

有機合成化学協会誌 (ISSN:00379980)

巻号頁・発行日

vol.79, no.2, pp.99, 2021-02-01 (Released:2021-02-10)

著者

平林 一徳 森 敦紀

出版者

The Society of Synthetic Organic Chemistry, Japan

雑誌

有機合成化学協会誌 (ISSN:00379980)

巻号頁・発行日

vol.58, no.10, pp.926-933, 2000 (Released:2009-11-13)

参考文献数

35

被引用文献数

4 5

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This article reviews organic chemistry of siloxane and silanol involving the preparative method as well as applications towards organic synthesis. Chapter 1 deals with the formation of siloxane bond and reactions of thus prepared siloxane compounds. Chapter 2 covers recent preparative methods for silanols and new synthetic reaction using silanol involving 1) utilization of silanol oxygen that serves as a base or a nucleophile, 2) transformation of neighboring functionality on the silicon substituent based on the interaction of silanol oxygen with an organometallic reagent, and 3) transformation of a carbon silicon bond of silanols directed to novel carbon-carbon bond forming reactions.

著者

河内 正治 難波 陸祐

出版者

The Society of Synthetic Organic Chemistry, Japan

雑誌

有機合成化学協会誌 (ISSN:00379980)

巻号頁・発行日

vol.42, no.9, pp.829-840, 1984-09-01 (Released:2009-11-13)

参考文献数

27

被引用文献数

1 3

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Fluorine containing polymers have excellent characteristics such as superior heat resistance, chemical resistance, non-stick property, and various electrical properties, and they are widely used for chemical, electrical and mechanical applications.Nowadays eight kinds of fluorocarbon polymers and six kinds of fluoroelatomers are commercially available in the market.Not only are the high performance of fluorine containing polymers finding their continued applications, but also the functions of the polymers, such as the lowest refractive index or electron beam sensitiveness are attracting attention in new and unique applications. and many new fluorine containing polymers suitable for such new applications are being developed now.In this article, the characteristics and their applications are reviewed.

著者

小池 隆司 佐藤 伸一 久保 孝史 安倍 学

出版者

公益社団法人 有機合成化学協会

雑誌

有機合成化学協会誌 (ISSN:00379980)

巻号頁・発行日

vol.77, no.5, pp.514, 2019

著者

稲本 直樹

出版者

The Society of Synthetic Organic Chemistry, Japan

雑誌

有機合成化学協会誌 (ISSN:00379980)

巻号頁・発行日

vol.26, no.7, pp.551-562, 1968-07-01 (Released:2009-11-13)

参考文献数

89

被引用文献数

1 1

著者

細矢 治夫

出版者

The Society of Synthetic Organic Chemistry, Japan

雑誌

有機合成化学協会誌 (ISSN:00379980)

巻号頁・発行日

vol.23, no.8, pp.660-673, 1965-08-01 (Released:2011-03-01)

参考文献数

47

著者

大橋 茂

出版者

The Society of Synthetic Organic Chemistry, Japan

雑誌

有機合成化学協会誌 (ISSN:00379980)

巻号頁・発行日

vol.19, no.1, pp.69-75, 1961-01-01 (Released:2010-10-20)

参考文献数

79

被引用文献数

1 2

著者

李 民雄 小林 幸夫 熊本 高信 白井 孝三

出版者

The Society of Synthetic Organic Chemistry, Japan

雑誌

有機合成化学協会誌 (ISSN:00379980)

巻号頁・発行日

vol.34, no.4, pp.228-231, 1976-04-01 (Released:2009-11-13)

参考文献数

5

被引用文献数

1 1

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アミノグアニジン臭化水素酸塩と臭化シアンとの反応によりアミノグアニジンは4位の窒素がニトリル化され, これが直ちに加水分解された1-グアニルセミカルバジド臭化水素酸塩 (1), ならびにニトリル基にさらにアミノグアニジン塩が付加した直鎖状N1, N2-ジグアニジノグアニジン三臭化水素酸塩 (2) のいずれも新規化合物を得た。 (1) はmp186℃ (分解) の白色鱗片状結晶で, 非極性溶媒には不溶, 水, エタノール, ジメチルホルムアミド, ジメチルスルホキシドなどに可溶である。 (2) はmp238℃ (分解) の白色結晶で, その溶解性は (1) とほぼ同様であるが, エタノールには難溶である。(1) および (2) を酢酸ナトリウム存在下に無水酢酸でアセチル化すると閉環し, それぞれトリアゾール環を有する3-アセトアミド-5-メチル-1, 2, 4-トリアゾール, ならびに3, 5-ジアセトアミド-1, 2, 4-トリアゾールを生成する。なお, (2) を塩基性水溶液中で煮沸すると脱アンモニア閉環して3-アミノ-5-グアニルヒドラジノ-1, 2, 4-トリアゾール (3) を73.3%の好収率で得た。以上の結果からアミノグアニジン塩と臭化シアンとの反応では予想した3, 5-ジアミノ-1, 2, 4-トリアゾール (別名グアナゾール) は得られず, 直鎖状化合物を生成することがわかった。

著者

村橋 俊一

出版者

The Society of Synthetic Organic Chemistry, Japan

雑誌

有機合成化学協会誌 (ISSN:00379980)

巻号頁・発行日

vol.61, no.5, pp.425-435, 2003-05-01 (Released:2009-11-13)

参考文献数

60

被引用文献数

2 3

---

The discovery of a new chemical reaction often leads to new chemical principle and application. We found that low valent ruthenium, rhodium, iridium, and rhenium hydride complexes can be used as transition metal-based redox Lewis acid and base, and ambiphilic catalysts. Various substrates bearing α-hetero atom (pronucleophiles) such as nitriles, carbonyl compounds, isocyanates undergo α-C-H activation upon treatment with the transition-metal-based catalysts, and subsequent reaction with nucleophiles such as alkenes, alkynes, carbonyl compounds, imines, and nitriles give the products via carbon-carbon bond formations. Nitriles undergo reactions with either nucleophiles or electrophiles under neutral conditions in the presence of transition-metalbased redox Lewis acid catalysts. The catalysts can be used also as ambiphilic catalysts. With these catalysts multi-step reactions are carried out in one pot under neutral conditions, and are highly useful for combinatorial chemistry and the reactions in microreactor. The novel transition metal complex catalyzed reactions thus obtained would give various non-salt alternative processes for industry. The concept would provide an important way for green chemistry.

著者

荒井 緑

出版者

公益社団法人 有機合成化学協会

雑誌

有機合成化学協会誌 (ISSN:00379980)

巻号頁・発行日

vol.79, no.1, pp.56-58, 2021-01-01 (Released:2021-01-09)

著者

吉川 誠次 山下 市二

出版者

The Society of Synthetic Organic Chemistry, Japan

雑誌

有機合成化学協会誌 (ISSN:00379980)

巻号頁・発行日

vol.35, no.5, pp.382-387, 1977-05-01 (Released:2009-11-13)

参考文献数

15

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スパイスは矯臭, 調味, 薬効などによって, 食欲を増進し調理には欠くことができない重要性を持っている。硫黄化合物がスパイスの特異な作用の中心になっていることがわかったのは, それ程古いことではない。しかしその反応性が著しいことが機作の研究進歩を防げている。

著者

若木 重敏

出版者

公益社団法人 有機合成化学協会

雑誌

有機合成化学協会誌 (ISSN:00379980)

巻号頁・発行日

vol.21, no.2, pp.143-147, 1963-02-01 (Released:2010-06-28)

被引用文献数

1

著者

多羅間 公雄

出版者

The Society of Synthetic Organic Chemistry, Japan

雑誌

有機合成化学協会誌 (ISSN:00379980)

巻号頁・発行日

vol.27, no.1, pp.1-10, 1969-01-01 (Released:2009-11-13)

参考文献数

39

著者

宮下 正昭

出版者

The Society of Synthetic Organic Chemistry, Japan

雑誌

有機合成化学協会誌 (ISSN:00379980)

巻号頁・発行日

vol.54, no.10, pp.846-858, 1996 (Released:2009-11-16)

参考文献数

28

被引用文献数

4 4

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Synthetic studies on nephilatoxins which has been carried out in the author's group is reviewed. Nephilatoxins (NPTX-112) isolated from Joro Spider (Nephila clavata) have been demonstrated to be potent blockers of glutaminergic neurotransmission as well as other spider toxins and are emerging as unique tools for understanding excitatory amino acid neurotransmission. In this report chemical synthesis of spider toxins involving synthetic strategy and total synthesis of NPTX-712 is described in which three azide intermediates were designed and employed as key compounds for construction of the characteristic polyamine chains of the toxins. In addition new results of biological activities obtained by using synthetic nephilatoxins (NPTX-712) and their congeners incorporating a D-amino acid are also described.

著者

山本 忠 吉武 誠 岸川 圭希 幸本 重男

出版者

The Society of Synthetic Organic Chemistry, Japan

雑誌

有機合成化学協会誌 (ISSN:00379980)

巻号頁・発行日

vol.50, no.7, pp.638-651, 1992-07-01 (Released:2010-01-28)

参考文献数

116

被引用文献数

3 4

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Recent studies on intramolecular epoxide cyclizations were reviewed. Regio- and stereoselective anionic cyclization of epoxy-nitriles, -olefins, -carbamates and -alcohols were discussed. Also regio- and stereoselective Lewis acid promoted epoxide cyclizations, radical and paradium-catalyzed ones were described.

著者

野副 鉄男

出版者

社団法人 有機合成化学協会

雑誌

有機合成化学協会誌 (ISSN:00379980)

巻号頁・発行日

vol.48, no.10, pp.929-935, 1990

著者

上村 明男

出版者

The Society of Synthetic Organic Chemistry, Japan

雑誌

有機合成化学協会誌 (ISSN:00379980)

巻号頁・発行日

vol.62, no.7, pp.705-715, 2004-07-01 (Released:2009-11-13)

参考文献数

44

被引用文献数

4 7

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Recent development of synthetic reactions using the Michael addition of thiols or analogues is described. Nucloephilic attack of thiolate anions to α, β-unsaturated ketones or esters generates enolate anions which are active to perform aldol reaction when the reaction condition is kept away from protic media. High stereoselectivity as well as enantioselectivity is achieved for the Michael/aldol tandem reaction when appropriate reaction conditions are employed. High regioselective Michael addition of thiols to unsymmetric fumaric derivatives is also accomplished and the either of regioisomers is prepared in a highly selective manner. The thio-groups introduced by these reactions serve as a useful precursor of carbon radicals that efficiently undergo cyclization reaction to provide heterocyclic compounds diastereoselectively.

著者

朝倉 英行 村本 慶博

出版者

社団法人 有機合成化学協会

雑誌

有機合成化学協会誌 (ISSN:00379980)

巻号頁・発行日

vol.35, no.10, pp.828-832, 1977

被引用文献数

2

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The effects of reaction temperature on the isomer distribution in the monosulfonation of <I>o</I>- and <I>m</I>-xylenes have been studied in 96 % sulfuric acid. <I>m</I>-Xylene-5-sulfonic acid was obtained in a good yield from <I>m</I>-xylene-4- and <I>m</I>-xylene-4-sulfonic acids were prepared by sulfonation of <I>o</I>- and <I>m</I>-xylenes. o-Xylene-3- and <I>m</I>-xylene-2-sulfonic acids were synthesized from the corresponding aminoxylenes by an adaptation of the method of Moschner. <I>m</I>-Xylene-5-sulfonic acid was obtained in a considerable yield by heating the 4-sulfonic acid at 200&deg;C with sulfuric acid. The isomeric of the sulfonation products were determined by analyses of their NMR signals of methyl protons. The sulfonic acids were characterized by IR and NMR spectra, and identified by their melting point of sulfonamides and S-benzylthiuronium salts.

著者

荒牧 稔

出版者

The Society of Synthetic Organic Chemistry, Japan

雑誌

有機合成化学協会誌 (ISSN:00379980)

巻号頁・発行日

vol.46, no.8, pp.821-823, 1988-08-01 (Released:2009-11-13)

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トリフルオロメタンスルホン酸はトリフリックアシッド (Triflic Acid) と呼ばれることもあるが, 前者の名称の方が公式名称である。