Alcohol dehydration. Isotope studies of the conversion of 3-pentanol

被引：22

作者：

Shi, BC ^{[1
]}

Dabbagh, HA ^{[1
]}

Davis, BH ^{[1
]}

机构：

[1] Univ Kentucky, Ctr Appl Energy Res, Lexington, KY 40511 USA

来源：

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 1999年 / 141卷 / 1-3期

关键词：

3-pentanol; dehydration; alumina; kinetic isotope effect (KIE; k(H)/k(D)); isotopic tracer studies;

D O I：

10.1016/S1381-1169(98)00269-6

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Three deuterated 3-pentanols and undeuterated 3-pentanol were converted using an alumina catalyst. Similar values of the kinetic isotope effect (KIE; k(H)/k(D)) were obtained for the rate of conversion of 3-pentanol and the rate of H(D) removal in forming the alkene products. The data support a catalytic dehydration mechanism that involves a concerted removal of H(D) from the -CH2-xDx group and OH (or O) from the carbinol carbon and with a timing such that the transition state resembles neither a carbonion-like nor carbenium-like species. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：257 / 262

页数：6