Copper(II)-Mediated Dehydrogenative Cross-Coupling of Heteroarenes
摘要:
Cu(OAc)(2)-mediated dehydrogenative cross-coupling between two heteroarenes has been realized in the absence of any other additive. A mechanism involving a formal Cu(II) to Cu(0) route by convergent disproportionation of the copper mediator is proposed and has been evidenced by copper mirror formation during the reaction. This synthetic protocol provides a concise and "green" access to unsymmetrical biheteroarenes bearing structural motifs of substantial utility in organic synthesis.
Copper(II)-Catalyzed Dehydrogenative Cross-Coupling between Two Azoles
作者:Xurong Qin、Boya Feng、Jiaxing Dong、Xiaoyu Li、Ying Xue、Jingbo Lan、Jingsong You
DOI:10.1021/jo301128y
日期:2012.9.7
The copper(II)-catalyzed dehydrogenative coupling between two different azoles for the preparation of unsymmetrical biazoles has been developed. The current catalytic system can effectively control the chemoselectivity for heterocoupling over homocoupling.