RETENTION OF STEREOCHEMISTRY IN THE FORMATION AND FRAGMENTATION OF DIOSMACYCLOBUTANES, AND OTHER EVIDENCE AGAINST A DIRADICAL MECHANISM

被引：13

作者：

HEMBRE, RT ^{[1
]}

RAMAGE, DL ^{[1
]}

SCOTT, CP ^{[1
]}

NORTON, JR ^{[1
]}

机构：

[1] COLORADO STATE UNIV,DEPT CHEM,FT COLLINS,CO 80523

来源：

ORGANOMETALLICS | 1994年 / 13卷 / 08期

关键词：

D O I：

10.1021/om00020a015

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Two results argue against a diradical intermediate in the exchange of diosmacyclobutanes with free olefins. The diosmacyclobutane Os2(CO)8(mu-propene) reacts with vinylcyclopropane to give as the sole product a diosmacyclobutane bearing an intact cyclopropane ring. Repeated exchange of trans-ethylene-1,2-d2 with the same ligand in a diosmacyclobutane shows >99.1% stereochemical excess per exchange half-life. These exchange reactions do not involve mononuclear olefin complexes.

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页码：2995 / 3001

页数：7

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