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作 者:Miaomiao Tian Lingyun Yang Bingxian Liu Junbiao Chang
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
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