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Scope and Mechanism on Iridium-f-Amphamide Catalyzed Asymmetric Hydrogenation of Ketones 被引量:4
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作者 Zhiqin Liang tilong yang +2 位作者 Guoxian Gu Li Dang Xumu Zhang 《Chinese Journal of Chemistry》 SCIE CAS CSCD 2018年第9期851-856,共6页
A series of novel and easily accessed ferrocene-based amino-phosphine-sulfonamide (f-Amphamide) ligands have been developed and ap- plied in Ir-catalyzed asymmetric hydrogenation of aryl ketones, affording the corre... A series of novel and easily accessed ferrocene-based amino-phosphine-sulfonamide (f-Amphamide) ligands have been developed and ap- plied in Ir-catalyzed asymmetric hydrogenation of aryl ketones, affording the corresponding chiral secondary alcohols with excellent results (up to 〉99% conversion, 〉99% ee and TON up to 200 000). DFT calculations suggest an activating model involving an alkali cation Li. 展开更多
关键词 aryl ketone asymmetric f-Amphamide HYDROGENATION IRIDIUM
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Mechanistic insight into the synergistic Cu/Pd-catalyzed carbonylation of aryl iodides using alcohols and dioxygen as the carbonyl source
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作者 Junxuan Li Jinlei Zhou +5 位作者 Yumei Wang Yue Yu Qiang Liu tilong yang Huoji Chen Hua Cao 《Science China Chemistry》 SCIE EI CSCD 2022年第1期68-74,共7页
Pd-catalyzed carbonylation,as an efficient synthetic approach to the installation of carbonyl groups in organic compounds,has been one of the most important research fields in the past decade.Although elegant reaction... Pd-catalyzed carbonylation,as an efficient synthetic approach to the installation of carbonyl groups in organic compounds,has been one of the most important research fields in the past decade.Although elegant reactions that allow highly selective carbonylations have been developed,straightforward routes with improved reaction activity and broader substrate scope remain long-term challenges for new practical applications.Here,we show a new type of synergistic Cu/Pd-catalyzed carbonylation reaction using alcohols and dioxgen as the carbonyl sources.A broad range of aryl iodides and alcohols are compatible with this protocol.The reaction is concise and practical due to the ready availability of the starting materials and the scalability of the reaction.In addition,the reaction affords lactones and lactams in an intermolecular fashion.Moreover,DFT calculations have been performed to study the detailed mechanisms. 展开更多
关键词 Cu/Pd-catalyzed carbonylations radical relay process ALCOHOLS dioxgen
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