Calcium-Catalyzed Hydroarylation of Alkenes at Room Temperature
作者:Meike Niggemann、Nicola Bisek
DOI:10.1002/chem.201001375
日期:——
trisubstituted styrene derivatives were reacted to give the desired diarylalkanes within less than an hour at roomtemperature in the presence of 2.5 mol % of Ca(NTf2)2/Bu4NPF6 (see scheme). Additionally, the highly reactive calcium catalyst was successfully applied for the hydroarylation of dienes and even trisubstituted olefins.
钙催化剂的发展:在室温下,在2.5 mol%Ca(NTf 2)2存在下,在不到一小时的时间内,使各种贫电子,富电子和三取代的苯乙烯衍生物反应生成所需的二芳基烷烃/ Bu 4 NPF 6(请参阅方案)。另外,高反应性钙催化剂已成功地用于二烯甚至三取代烯烃的加氢芳基化反应。
PISANENKO D. A.; HECTEPEHKO S. A., ZH. ORGAN. XIMII, 1979, 15, HO 9, 1911-1915
作者:PISANENKO D. A.、 HECTEPEHKO S. A.
DOI:——
日期:——
Calcium-Catalyzed Friedel-Crafts Alkylation at Room Temperature
作者:Meike Niggemann、Matthias J. Meel
DOI:10.1002/anie.200907227
日期:2010.5.10
A novel calcium catalyst was found to efficiently functionalize electron‐rich arenes with secondary and tertiary benzylic, propargylic, and allylic alcohols under very mild reaction conditions. The new catalyst system significantly enlarges the scope of the reaction, which was previously limited except for the few examples with secondary benzylicalcohols.