A Rh(III)-catalyzed intramolecular redox-neutral or oxidative annulation of a tethered alkyne has been developed to efficiently construct 3,4-fused indoles via a C–H activation pathway. The advantages of this process are (1) ready availability of annulation precursors; (2) broad substrate scope; (3) complete regioselectivity; (4) simple and mild reaction conditions; and (5) no need for an external
已开发了一种Rh(III)催化的链状
炔烃分子内氧化还原中性或氧化环化反应,可通过C–H活化途径有效地构建3,4-稠合的
吲哚。该方法的优点是:(1)现成的环形前体的可用性;(2)基材范围广;(3)完全的区域选择性;(4)反应条件简单温和;(5)不需要外部氧化剂或使用分子氧作为
化学计量的末端氧化剂。