进行了系统研究,证明了定向邻位金属化(D o M)和Ir催化策略的互补性,这些策略提供了硼化芳族化合物及其随后的Suzuki-Miyaura偶联反应。提出了一种新的概念,即由D o M容易引入的TMS基团作为潜在的区域定向基团,以克服异构化的硼酸酯化产物混合物的否则成问题的生产。附加电子试剂诱导的本位-deborylation和d ö的BPIN产品的M个反应说明。
进行了系统研究,证明了定向邻位金属化(D o M)和Ir催化策略的互补性,这些策略提供了硼化芳族化合物及其随后的Suzuki-Miyaura偶联反应。提出了一种新的概念,即由D o M容易引入的TMS基团作为潜在的区域定向基团,以克服异构化的硼酸酯化产物混合物的否则成问题的生产。附加电子试剂诱导的本位-deborylation和d ö的BPIN产品的M个反应说明。
<i>para</i>
‐Selective C−H Borylation of (Hetero)Arenes by Cooperative Iridium/Aluminum Catalysis
作者:Lichen Yang、Kazuhiko Semba、Yoshiaki Nakao
DOI:10.1002/anie.201701238
日期:2017.4.18
para‐SelectiveC−H borylation of benzamides and pyridines has been achieved by cooperative iridium/aluminum catalysis. A combination of iridium catalysts commonly employed for arene C−H borylation and bulky aluminum‐based Lewis acid catalysts provides an unprecedented strategy for controlling the regioselectivity of C−H borylation to give variously substituted (hetero)arylboronates, which are versatile
Iridium-Catalyzed CH Activation versus Directed<i>ortho</i>Metalation: Complementary Borylation of Aromatics and Heteroaromatics
作者:Timothy E. Hurst、Todd K. Macklin、Maike Becker、Eduard Hartmann、Wolfgang Kügel、Jean-Christophe Parisienne-La Salle、Andrei S. Batsanov、Todd B. Marder、Victor Snieckus
DOI:10.1002/chem.201000401
日期:2010.7.19
Systematic studies are presented demonstrating the complementarity of directed ortho metalation (DoM) and Ir‐catalyzed strategies for the provision of borylated aromatics and their subsequent Suzuki–Miyaura coupling reactions. A new concept, the use of the TMS group, readily introduced by DoM, as a latent regiodirective moiety to overcome the otherwise problematic production of isomeric borylated product
进行了系统研究,证明了定向邻位金属化(D o M)和Ir催化策略的互补性,这些策略提供了硼化芳族化合物及其随后的Suzuki-Miyaura偶联反应。提出了一种新的概念,即由D o M容易引入的TMS基团作为潜在的区域定向基团,以克服异构化的硼酸酯化产物混合物的否则成问题的生产。附加电子试剂诱导的本位-deborylation和d ö的BPIN产品的M个反应说明。