EXCHANGE-REACTIONS OF 2,2-DIMETHYLPENTANE, 2,2-DIMETHYLBUTANE AND 2,2-DIMETHYLPROPANE OVER PT/SIO2 AND RH/SIO2

被引：0

作者：

BROWN, R ^{[1
]}

KEMBALL, C ^{[1
]}

MCDOUGALL, GS ^{[1
]}

机构：

[1] UNIV EDINBURGH,DEPT CHEM,W MAINS RD,EDINBURGH EH9 3JJ,MIDLOTHIAN,SCOTLAND

来源：

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS | 1995年 / 91卷 / 07期

关键词：

D O I：

10.1039/ft9959101131

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：

A comparison has been made of the exchange reactions of deuterium with 2,2-dimethylpentane (22DMP), 2,2-dimethylbutane (22DMB) and 2,2-dimethylpropane (DMP) over Pt/SiO2 to investigate the mechanisms which allow exchange to propagate across the quaternary carbon atom. The contribution of this process increases with the temperature and is augmented by an increase in the size of the alkyl group attached to the tert-butyl group. Results were also obtained with Rh/SiO2 for comparison. Deuterium NMR analyses were made on the products from the exchange of 22DMP over both metals and these proved helpful as a guide to possible mechanisms, particularly with Rh/SiO2.

引用

页码：1131 / 1137

页数：7

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