作者:Siming Lu、Ryosuke Agata、Satsuki Nomura、Hiroshi Matsuda、Katsuhiro Isozaki、Masaharu Nakamura
DOI:10.1021/acs.joc.4c00168
日期:——
The iron-catalyzed Suzuki–Miyaura cross-coupling of secondary propargyl electrophiles with lithium organoborates has been established. A propyl-bridged bulky bisphosphine ligand, SciPROP-TB, cooperated with the bulky TIPS substituent at the alkyne terminal position to achieve the cross-coupling reaction with exclusive propargylic selectivity. The reaction features high functional group compatibility
已经建立了铁催化的仲炔丙基亲电子试剂与有机硼酸锂的 Suzuki-Miyaura 交叉偶联。丙基桥联的大双膦配体SciPROP-TB与炔末端位置的大TIPS取代基配合,实现了具有独特的炔丙基选择性的交叉偶联反应。该反应具有官能团相容性高、区域选择性高、产率高、底物范围广等特点。光学活性手性炔丙基溴的反应以完全外消旋的方式进行,支持了涉及炔丙基自由基形成的机制。