The Cobalt-Catalyzed Cross-Coupling Reaction of Alkyl Halides with Alkyl Grignard Reagents: A New Route to Constructing Quaternary Carbon Centers
作者:Nobuaki Kambe、Takanori Iwasaki、Hiroaki Takagawa、Kanako Okamoto、Surya Singh、Hitoshi Kuniyasu
DOI:10.1055/s-0033-1341152
日期:——
are well tolerated. The cross-coupling of alkyl (pseudo)halides with alkyl Grignard reagents is catalyzed efficiently by a cobalt(II) chloride–lithium iodide–1,3-diene catalytic system, which provides a new synthetic tool for constructing sp3 carbon chains. This system is particularly useful for creating quaternary carbon centers via the use of tertiary alkyl Grignard reagents. Various functional groups
摘要 烷基(假)卤化物与烷基格氏试剂的交叉偶联可通过氯化钴(II)-碘化锂-1,3-二烯催化体系有效地催化,这为构建sp 3碳链提供了一种新的合成工具。该系统对于通过使用叔烷基格氏试剂建立季碳中心特别有用。包括酯,酰胺和氨基甲酸酯在内的各种官能团均具有良好的耐受性。 烷基(假)卤化物与烷基格氏试剂的交叉偶联可通过氯化钴(II)-碘化锂-1,3-二烯催化体系有效地催化,这为构建sp 3碳链提供了一种新的合成工具。该系统对于通过使用叔烷基格氏试剂建立季碳中心特别有用。包括酯,酰胺和氨基甲酸酯在内的各种官能团均具有良好的耐受性。