Formal metal-free γ-arylation of 1,3-dicarbonyl compounds <i>via</i> an isomerisation/1,4-addition/[3,3]-sigmatropic rearrangement sequence
作者:Shi-Chao Lu、Fu-Qiang Wen、Xi-Dong Guan
DOI:10.1039/d1gc02856a
日期:——
metal-free redox arylation of alkynes with sulfoxides has been developed to provide unconventional access to diverse γ-arylated 1,3-dicarbonyl compounds in an atom-economical manner. Mechanistic studies suggest that a conjugated allenone intermediate was generated in situ, which solves the problem of reactivity and regioselectivity of unsymmetrical dialkyl-substituted internal alkynes and enables the functionalisation
炔烃与亚砜的无金属氧化还原芳基化已被开发出来,以原子经济的方式提供对各种 γ-芳基化 1,3-二羰基化合物的非常规访问。机理研究表明,共轭丙二烯酮中间体是原位生成的,这解决了不对称二烷基取代的内部炔烃的反应性和区域选择性问题,并使各种带有吸电子官能团的底物官能化。所得的芳基化 1,3-二羰基化合物是用于进一步功能化的通用且有用的构建单元。