Tandem cyclopropanation/ring-closing metathesis of dienynes.

Tandem cyclopropanation/ring-closing metathesis of dienynes.
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二炔的串联环丙烷化/闭环复分解。

DOI:
10.1021/ja049079o
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发表时间:
2004
影响因子:
15
通讯作者:
Diver,StevenT
Diver,StevenT
中科院分区:
化学1区
文献类型:
--
作者:
Peppers,BrianP;Diver,StevenT

文献摘要

相似文献

某些二烯炔通过串联环丙烷化/闭环烯烃复分解反应产生环重排,由钌卡宾或非卡宾钌(II)预催化剂引发。该方法代表了烯炔复分解的变化,其中假定的环丙基卡宾中间体经历连续的闭环复分解。提出了一种机理建议,并顺序使用催化剂提供了串联闭环烯炔/烯烃复分解产物。
Certain dienynes give cyclorearrangement by tandem cyclopropanation/ring-closing alkene metathesis, triggered by either a ruthenium carbene or noncarbene ruthenium(II) precatalyst. The process represents a variation of enyne metathesis where presumed cyclopropyl carbene intermediates undergo a consecutive ring-closing metathesis. A mechanistic proposal is offered, and sequential use of catalysts provided a tandem ring-closing enyne/alkene metathesis product.