アクセス数 : 1179 件
ダウンロード数 : 273 件
この文献の参照には次のURLをご利用ください : https://ir.lib.shimane-u.ac.jp/1768
島根大学農学部研究報告 Volume 17
published_at 1983-12-20
金属イオンをもつβ-シクロデキストリン二量体によるフロインの酸化反応促進効果
Catalytic Effect of β-Cyclodextrin Dimer with a Metal Ion on the Oxidation of Furoin
full_text_file
d0030017n027.pdf
( 471 KB )
Descriptions
The catalytic effect of a 2 : 1 complex between 3-deoxy-3-[N-(2-aminoethyl)] amino-β-cyclodextrin and Cu(II) on the oxidation of furoin, 1, 2-difuryl-2-oxoethanol, was examined at pH 1O.5 and 25 ℃.
The reaction was siginficantly accelerated by the complex. However, the magnitude of the increase was smaller than that by the corresponding 6-deoxy-6-[N-(2-aminoethyl)] amino-β-cyclodextrin complex. The existence of two β-cyclodextrin cavities in a complex molecule may be preferable for the rate acceleration to that of one cavity in a molecule.
This fact suggests that each cavity in the complex fixes each furil group in furoin to locate the reaction site of furoin in the vicinity of the Cu(II)ion. The rate acceleration may be caused by electrostatic stabilization of the enolate anion of furoin.
The reaction was siginficantly accelerated by the complex. However, the magnitude of the increase was smaller than that by the corresponding 6-deoxy-6-[N-(2-aminoethyl)] amino-β-cyclodextrin complex. The existence of two β-cyclodextrin cavities in a complex molecule may be preferable for the rate acceleration to that of one cavity in a molecule.
This fact suggests that each cavity in the complex fixes each furil group in furoin to locate the reaction site of furoin in the vicinity of the Cu(II)ion. The rate acceleration may be caused by electrostatic stabilization of the enolate anion of furoin.
About This Article
Pages
Other Article