Cobalt-catalyzed [2+2] cycloaddition

被引：69
|
作者：
Treutwein, Jonas [1 ]
Hilt, Gerhard [1 ]
机构：
[1] Univ Marburg, Fachbereich Chem, D-35043 Marburg, Germany
来源：
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2008年 / 47卷 / 36期
关键词：
alkenes; alkynes; cobalt; cycloaddition;
D O I：
10.1002/anie.200801778
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
(Chemical Equation Presented) Three's a charm, but four's not half bad either: A simple cobalt-diphosphine complex facilitates the synthesis of cyclobutene derivatives through the chemoselective transformation of strained five-membered unsaturated rings with internal alkynes (see scheme). This atom-efficient, intermolecular reaction generates polycyclic products in excellent yields and with excellent exo selectivity. dppp=1,3- bis(diphenylphosphanyl)propane. © 2008 Wiley-VCH Verlag GmbH & Co. KGaA.
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收藏
页码：6811 / 6813
页数：3
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