Synthesis of 9,10-Phenanthrenes via Rh(III)-Catalyzed[4+2]Annulation of 2-Biphenylboronic Acids with Diazo Compounds  

作　　者：Miaomiao Tian Lingyun Yang Bingxian Liu Junbiao Chang 

机构地区：[1]NMPA Key Laboratory for Research and Evaluation of Innovative Drug,School of Chemistry and Chemical Engineering,Henan Normal University,Pingyuan Laboratory,Xinxiang,Henan,453007 China

出　　处：《Chinese Journal of Chemistry》2023年第11期1327-1332,共6页中国化学（英文版）

基　　金：the financial support for this work from the National Key R&D Program of China(2021YFC0864700);the NSFC(Nos.21801066,U1804283 and 82130103);the Central Plains Scholars and Scientists Studio Fund(2018002);the project funded by the Natural Science Foundation of Henan Province(222300420056,222300420204);the China Postdoctoral Science Foundation(2020M682307,2021T140183).

摘　　要：A Rh(III)-catalyzed,transmetalation triggered C—H activation/annulation of 2-biphenylboronic acids with diazo compounds fromβ-keto esters or 1,3-dicarboxylates has been developed,leading to the synthesis of two kinds of 9,10-phenanthrenes.Notably,a rhodacyle was synthesized by treating the rhodium catalyst with stoichiometric amounts of 2-biphenylboronic acids and pyridine,which was further verified to be active for the catalytic system.The reactions proceeded under redox-neutral and air-tolerant conditions to produce a series of all-carbon six-membered rings with high efficiency.

关 键 词：9 10-Phenanthrenes Rh(Il)-catalyzed Diazo reagent TRANSMETALLATION ANNULATION Carbocycles C-Hactivation 

分 类 号：O62[理学—有机化学]