Iron-Catalyzed Reductive Vinylation of Tertiary Alkyl Oxalates with Activated Vinyl Halides
作者:Yang Ye、Haifeng Chen、Ken Yao、Hegui Gong
DOI:10.1021/acs.orglett.0c00561
日期:2020.3.6
of vinylated all carbon quaternary centers via Fe-catalyzed cross-electrophile coupling of vinyl halides with tertiary alkyl methyl oxalates. The reaction displays excellent functional group tolerance and broad substrate scope, which allows cascade radical cyclization and vinylation to afford complex bicyclic and spiral structural motifs. The reaction proceeds via tertiary alkyl radicals, and the putative
我们在本文中提出了一种罕见而有效的方法,用于通过卤化乙烯与草酸叔烷基甲基酯的铁催化的交亲电偶合来创建乙烯基化的所有碳季碳原子中心。该反应显示出优异的官能团耐受性和广泛的底物范围,这允许级联自由基环化和乙烯基化以提供复杂的双环和螺旋结构基序。反应通过叔烷基进行,假定的乙烯基-Br / Fe络合对于活化烯烃和实现可能的协同加成/ C-Fe形成过程至关重要。