在这里,我们报告了简单的烷基氮丙啶和有机锌试剂之间的镍催化的 CC 键形成反应。这种方法代表了第一个采用非烯丙基和非苄基 Csp(3)-N 键作为亲电子试剂的催化交叉偶联反应。其成功的关键是使用带有缺电子烯烃的新 N 保护基团(cinsyl 或 Cn),该烯烃可指导氧化加成并促进还原消除。还介绍了与阐明交叉耦合机制有关的研究。
Nickel-catalyzed enantioselective arylation of pyridine
作者:J. Patrick Lutz、Stephen T. Chau、Abigail G. Doyle
DOI:10.1039/c6sc00702c
日期:——
We report an enantioselective Ni-catalyzed cross coupling of arylzinc reagents with pyridinium ions formed in situ from pyridine and a chloroformate. This reaction provides enantioenriched 2-aryl-1,2-dihydropyridine products that can be elaborated to numerous piperidine derivatives with little or no loss in ee. This method is notable for its use of pyridine, a feedstock chemical, to build a versatile