A ruthenium catalyzed meta-selective C–H functionalization of 2-phenylpyridines with tertiary halides is described to establish challenging quaternary carbon centres in a regioselective manner. Preliminary studies suggest the C–H functionalization proceeds through a radical process directed via a remote σ-activation.
一种
钌催化的
2-苯基吡啶与三级卤代物的
meta选择性C-H官能化反应被描述为以区域选择性方式建立具有挑战性的四元碳中心。初步研究表明,C-H官能化反应通过远程σ活化引导的自由基过程进行。