| Item type |
デフォルトアイテムタイプ（フル）(1) |
| 公開日 |
2008-03-27 |
| タイトル |
|
|
タイトル |
Reaction of 5$\alpha$-Cholest-2-ene with Iodine-Copper (2) Acetate |
|
言語 |
en |
| 作成者 |
Utsukihara, Takamitsu
Yokoyama, Yuuya
Kaneko, Katsuo
Yoshino, Isao
Miyasaka, Tohru
Satoh, J. Yasuo
Kuniyoshi, Masayuki
Horiuchi, C. Akira
国吉, 正之
|
| アクセス権 |
|
|
アクセス権 |
open access |
|
アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 内容記述 |
|
|
内容記述タイプ |
Other |
|
内容記述 |
Reaction of 5$\alpha$-cholest-2-ene (1) with iodine (2.0mol equiv) and copper (2) acetate (2.0mol equiv) in acetic acid under refluxing yielded 5$\alpha$-cholestane-2$\beta$, 3$\beta$-diol 2-acetate (4) (13%), 2-iodoacetate (5) (55%), 3-iodoacetate (6) (10%), and 2-iodoacetate 3-acetate (7) (13%). Then the hydrolysis of these reaction mixtures afforded the more hindered 2$\beta$, 3$\beta$-diol (13) in good yield. In the case of cyclohexene (2), the similar compounds were obtained. In order to clarify the reaction pathway of the unexpected hydroxy iodoacetate, the reaction of cis-hydroxy acetate with iodine-copper(2) acetate was carried out. It was found that copper is coordinated to the oxygen of the hydroxyl group and the carbonyl group of the acetate so that the methyl group of the acetate may be activated, and then iodination occurs at the acetoxyl group. |
| 内容記述 |
|
|
内容記述タイプ |
Other |
|
内容記述 |
紀要論文 |
| 出版者 |
|
|
出版者 |
琉球大学理学部 |
|
言語 |
ja |
| 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 |
departmental bulletin paper |
| 出版タイプ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| 識別子 |
|
|
識別子 |
http://hdl.handle.net/20.500.12000/5372 |
|
識別子タイプ |
HDL |
| 収録物識別子 |
|
|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
0286-9640 |
| 収録物識別子 |
|
|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AN00250774 |
| 収録物名 |
|
|
収録物名 |
琉球大学理学部紀要 |
|
言語 |
ja |
| 収録物名 |
|
|
収録物名 |
Bulletin of the College of Science. University of the Ryukyus |
|
言語 |
en |
| 書誌情報 |
号 82,
p. 77-87,
発行日 2006-10
|
No82p77.pdf
