Acenaphthoimidazolylidene Gold Complex-Catalyzed Alkylsulfonylation of Boronic Acids by Potassium Metabisulfite and Alkyl Halides: A Direct and Robust Protocol To Access Sulfones
作者:Haibo Zhu、Yajing Shen、Qinyue Deng、Jiangbo Chen、Tao Tu
DOI:10.1021/acscatal.7b00860
日期:2017.7.7
A robust acenaphthoimidazolylidene gold complex is demonstrated as a highly efficient catalyst in the direct alkylsulfonylation of boronic acids. Remarkably, a wide range of highly reactive and unreactive C-electrophiles were well-tolerated to produce various (hetero)aryl-alkyl, aryl-alkenyl, and alkenyl-alkyl sulfones in satisfactory yields with 5 mol % catalyst loading. Along with the steric properties
在硼酸的直接烷基磺酰化反应中,一种强效的ph啶咪唑基亚金络合物被证明是一种高效的催化剂。显着地,广泛耐受高反应性和非反应性的C-亲电子试剂,以令人满意的产率和5mol%的催化剂负载量产生各种(杂)芳基-烷基,芳基-烯基和烯基-烷基砜。除了NHC配体的空间特性外,这种金配合物的高催化活性还表明,ph啶咪唑基亚甲基的强σ供电在促进这一具有挑战性的氧化还原中性催化过程中也发挥了作用。