WEKO3
アイテム
Solvent Effects and Steric Course in the Solvolysis of 1,3,3-Trimethyl-2- oxocyclopentyl Mesylate in Comparison with 1,1,3,3-Tetramethyl-2- oxobutyl System
http://hdl.handle.net/10112/5606
http://hdl.handle.net/10112/560616a6f78f-11c9-4fa7-bfaa-37ac1932412c
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
KU-1100-20011207-21.pdf (240.3 kB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
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| 公開日 | 2011-11-21 | |||||
| タイトル | ||||||
| タイトル | Solvent Effects and Steric Course in the Solvolysis of 1,3,3-Trimethyl-2- oxocyclopentyl Mesylate in Comparison with 1,1,3,3-Tetramethyl-2- oxobutyl System | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| 著者 |
Takeuchi, Ken'ichi
× Takeuchi, Ken'ichi× Ushino, Takuhiro× Okazaki, Takao× Kitagawa, Toshikazu× Kinoshita, Tomomi× Ohga, Yasushi× Tanaka, Koichi× Toda, Fumio |
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| 著者別名 | ||||||
| 識別子Scheme | WEKO | |||||
| 識別子 | 26430 | |||||
| 姓名 | 田中, 耕一 | |||||
| 著者別名 | ||||||
| 識別子Scheme | WEKO | |||||
| 識別子 | 26431 | |||||
| 姓名 | 戸田, 芙三夫 | |||||
| 概要 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | The rates of solvolysis in various solvents were determined for 1,1,3,3-tetramethyl-2-oxobutyl tosylate (1OTs) and 1,3,3-trimethyl-2-oxocyclopentyl mesylate (4 OMs). The rate data for 1OTs reinforced that the linear Grunwald−Winstein (GW) relationship of 1OMs previously reported by Creary for non-aqueous solvents must also hold for aqueous organic solvents.4OMs showed a markedly dispersed GW relationship that is, on the other hand, well correlated with an extended GW equation involving a nucleophilicity parameter. Such solvent dependence, such marked effects of added sodium azide on rates, and the 100% inversion of configuration of the solvolysis product showed that the solvolysis of 4OMs would be categorized to SN2(intermediate), whereas 1OMs and1OTs solvolyze via limiting S N1.The negligible susceptibility of 1OTs toward nucleophilicity of solvent and azide probe indicates that the nucleofuge leaves along the C=O axis in such a manner that the back-strain (B-strain) in the ground state is efficiently relieved in the transition state. Comparison of solvolysis rates of 1OMs and 4OMs with those of the corresponding parent substrates suggests that the transition states of these substrates would not be stabilized by carbonylπ conjugation. The origin of the unexpectedly fast rates of solvolysis of 1 OMs has been discussed. |
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| 書誌情報 |
Bulletin of the Chemical Society of Japan 巻 74, 号 2, p. 363-370, 発行日 2001 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 00092673 | |||||
| 書誌レコードID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AA00580132 | |||||
| DOI | ||||||
| 関連タイプ | isIdenticalTo | |||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1246/bcsj.74.363 | |||||
| 著者版フラグ | ||||||
| 出版タイプ | VoR | |||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
| 出版者 | ||||||
| 出版者 | Chemical Society of Japan | |||||
| 出版者（他言語） | ||||||
| 値 | 日本化学会 | |||||
