straightforward and efficient synthesis of naphtho[1,8‐bc]pyran derivatives and related polycyclic compounds is achieved by the rhodium‐catalyzed oxidative coupling of 1‐naphthols or other phenolic and alcoholic substrates with alkynes. In these annulation reactions, the hydroxy groups effectively act as the key function for the regioselective CHbondcleavage.
萘并[1,8- bc ]吡喃衍生物和相关多环化合物的直接有效合成是通过1-萘酚或其他酚和醇底物与炔烃的铑催化氧化偶联而实现的。在这些环化反应中,羟基有效地充当区域选择性CH键裂解的关键功能。
Hydroxyl-Directed Ruthenium-Catalyzed C–H Bond Functionalization: Versatile Access to Fluorescent Pyrans
作者:Vedhagiri S. Thirunavukkarasu、Margherita Donati、Lutz Ackermann
DOI:10.1021/ol301387t
日期:2012.7.6
Hydroxyl-assisted oxidative annulations of alkynes were accomplished with an inexpensive ruthenium(II) complex, delivering fluorescent pyrans via highly site selective as well as chemo- and regioselective C-H/O-H bond functionalizations.