Palladium-Catalyzed Coupling of<i>ortho</i>-Alkynylanilines with Terminal Alkynes Under Aerobic Conditions: Efficient Synthesis of 2,3-Disubstituted 3-Alkynylindoles
作者:Bo Yao、Qian Wang、Jieping Zhu
DOI:10.1002/anie.201205596
日期:2012.12.3
Two nucleophiles, one triple bond: Under aerobic conditions, palladium‐catalyzed direct coupling of o‐alkynylanilines and terminalalkynes took place smoothly to afford the 2,3‐disubstituted 3‐alkynylindoles 3 in good to excellent yields. The intermediate A was characterized and a retro‐aminopalladation of B was observed for the first time.