An alternative approach to formation of a C-C bond at a meta-position of an aromatic compound is disclosed that employs an ethylenically unsaturated bicyclic compound as a transient mediator to achieve meta-selective C-H activation with a simple and common ortho-directing group. The use of a pyridine-based ligand assists in relaying the palladium catalyst to the meta-position by the unsaturated bicyclic compound following initial ortho-C-H activation.
披露了一种在芳香化合物的间位形成C-C键的替代方法,该方法利用
乙烯不饱和的
双环化合物作为瞬时介质,通过简单常见的邻向导向基团实现间选择性C-H活化。使用以
吡啶为基础的
配体有助于通过不饱和的
双环化合物将
钯催化剂传递到间位,从而实现最初的邻位C-H活化。