diverse five‐membered lactams from aliphaticamides and terminal acetylenes with the assistance of an 8‐aminoquinolyl auxiliary has been achieved. A broad range of terminal acetylenes and aliphaticamides proved to be the efficient coupling partners, furnishing the corresponding lactams in moderate to good yields. The transformation is proven to undergo an oxidative alkynylation followed by the intramolecular
Copper-Mediated Tandem Oxidative C(sp<sup>2</sup>)–H/C(sp)–H Alkynylation and Annulation of Arenes with Terminal Alkynes
作者:Jiaxing Dong、Fei Wang、Jingsong You
DOI:10.1021/ol501023n
日期:2014.6.6
The copper-mediatedtandem oxidative C(sp2)–H/C(sp)–H cross-coupling and intramolecular annulation of arenes with terminal alkynes has been developed, which offers a highly efficient approach to the 3-methyleneisoindolin-1-one scaffold. In this oxidative coupling process, Cu(OAc)2 acts as both the promoter and the terminal oxidant. This protocol features a wide substrate scope; high functional group