Heterocoupling of 2-naphthols enabled by a copper–N-heterocyclic carbene complex
作者:Michael Holtz-Mulholland、Mylène de Léséleuc、Shawn K. Collins
DOI:10.1039/c3cc38675a
日期:——
The reactivity of a Cu catalyst for oxidative coupling is modulated by a small molecule additive, diethyl malonate, that slows over-oxidation of 2-naphthols. Efficient heterocoupling between electron-rich and electron-poor 2-naphthols/2-naphthylamines affords C1-symmetric BINOLs with yields ranging from 35â98%.