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.
                            本发明公开了一种在芳香族化合物元位形成 C-C 键的替代方法,该方法采用
乙烯不饱和
双环化合物作为瞬时介质,通过简单而常见的正交定向基团实现元选择性 C-H 活化。使用基于
吡啶的
配体有助于
钯催化剂在初始正交 C-H 活化后通过不饱和
双环化合物中继到元位置。