Propargylsilanes as Reagents for Synergistic Gold(I)‐Catalyzed Propargylation of Carbonyl Compounds: Isolation and Characterization of σ‐Gold(I) Allenyl Intermediates
作者:Sergio Fernández、Jairo González、Javier Santamaría、Alfredo Ballesteros
DOI:10.1002/anie.201905159
日期:2019.7.29
Reported herein is the isolation and characterization, for the first time, of a σ‐gold allenyl complex as an intermediate in gold catalysis. This intermediate was captured during the study of a novel gold(I)‐catalyzed propargylation of carbonyl compounds with propargylsilanes. Notably, the gold‐catalyzed propargylation reaction, which proceeds with aldehydes and ketones, can be driven to the formation
本文首次报道了作为金催化中间体的σ-金烯基络合物的分离和表征。该中间体是在研究新型金(I)催化的羰基化合物与炔丙基硅烷的炔丙基化过程中捕获的。值得注意的是,与醛和酮一起进行的金催化的炔丙基化反应可被驱动生成高炔丙基甲硅烷基醚或原位合成相应的2-silyl-4,5-dihydrofurans。