STEREOSPECIFICITY IN THE GAS-PHASE - FORMATION AND CHARACTERIZATION OF CONFIGURATIONALLY STABLE CYCLOPROPYL ANIONS

被引：21

作者：

BASCHKY, MC ^{[1
]}

PETERSON, KC ^{[1
]}

KASS, SR ^{[1
]}

机构：

[1] UNIV MINNESOTA, DEPT CHEM, MINNEAPOLIS, MN 55455 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 1994年 / 116卷 / 16期

关键词：

D O I：

10.1021/ja00095a026

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report the gas-phase preparation of cis- and trans-beta-formylcyclopropyl anion (4c and 4t) via the room temperature fluorodesilylation of their corresponding trimethylsilyl derivatives. These homoenolates do not interconvert or undergo ring-opening isomerization at 25 degrees C, and can readily be differentiated with several chemical probes. The proton affinities of both 4c and 4t have been measured, and the results are compared to ab initio computations. Cyclization to a 2-bicyclobutoxide ion (8) has been considered, and although the process is calculated to have a small activation barrier, it is found to be thermodynamically unfavorable.

引用

页码：7218 / 7224

页数：7

共 52 条

[21] ISOMERIZATION-REACTIONS OF BETA-ETHYL ANIONS IN THE GAS-PHASE [J].