Development of a highly selective and efficient catalyst for 1,3-butadiene dimerization

被引：45
|
作者：
Harkal, S
Jackstell, R
Nierlich, F
Ortmann, D
Beller, M
机构：
[1] Univ Rostock eV, Leibniz Inst Organ Katalyse, IfOK, D-18055 Rostock, Germany
[2] Degussa AG, D-45772 Marl, Germany
来源：
ORGANIC LETTERS | 2005年 / 7卷 / 04期
关键词：
D O I：
10.1021/ol048025g
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
A selective dimerization reaction of 1,3-butadiene in the presence of 2-propanol to give 1,3,7-octatriene has been developed. By modification of palladium carbene catalysts an unexpected selectivity switch from the telomerization to the dimerization product occurred. In applying the 1,3-bis(2,6-diisopropylphenyl)-4,5-dimethyl-3H-imidazolidenyipalladium(0) complex 9, unprecedented catalyst efficiency (TON > 80 000 and TOF > 5000 h(-1)) has been obtained for this transformation.
引用
收藏
页码：541 / 544
页数：4
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