Palladium-Catalyzed Asymmetric Conjugate Addition of Arylboronic Acids to Heterocyclic Acceptors
作者:Jeffrey C. Holder、Alexander N. Marziale、Michele Gatti、Bin Mao、Brian M. Stoltz
DOI:10.1002/chem.201203643
日期:2013.1.2
Flava Flavanone: Asymmetric conjugate additions to chromones and 4‐quinolones are reported utilizing a single catalyst system formed in situ from Pd(OCOCF3)2 and (S)‐tBuPyOX. Notably, these reactions are performed in wet solvent under ambient atmosphere, and employ readily available arylboronic acids as the nucleophile, thus providing ready access to these asymmetric heterocycles (see scheme).
Flava 黄烷酮:据报道,使用由 Pd(OCOCF 3 ) 2和 ( S ) -t BuPyOX原位形成的单一催化剂体系,不对称共轭加成到色酮和 4-喹诺酮。值得注意的是,这些反应是在环境气氛下在湿溶剂中进行的,并使用容易获得的芳基硼酸作为亲核试剂,从而提供了对这些不对称杂环的快速访问(参见方案)。