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光氧化还原/镍催化单电子 Tsuji-Trost 反应:发展与机理洞察。

Photoredox/Nickel-Catalyzed Single-Electron Tsuji-Trost Reaction: Development and Mechanistic Insights.

机构信息

Department of Chemistry, University of Pennsylvania, Roy and Diana Vagelos Laboratories, Philadelphia, PA, 19104-6323, USA.

Department of Chemistry and Biochemistry, University of Maryland, College Park, MD, 20742, USA.

出版信息

Angew Chem Int Ed Engl. 2018 Nov 26;57(48):15847-15851. doi: 10.1002/anie.201809919. Epub 2018 Nov 7.

Abstract

A regioselective, nickel-catalyzed photoredox allylation of secondary, benzyl, and α-alkoxy radical precursors is disclosed. Through this manifold, a variety of linear allylic alcohols and allylated monosaccharides are accessible in high yields under mild reaction conditions. Quantum mechanical calculations [DFT and DLPNO-CCSD(T)] support the mechanistic hypothesis of a Ni to Ni oxidative addition pathway followed by radical addition and inner-sphere allylation.

摘要

本文报道了一种区域选择性、镍催化的次级、苄基和α-烷氧基自由基前体的光还原烯丙基化反应。通过这种多相反应,可以在温和的反应条件下以高产率获得各种线性烯丙基醇和烯丙基单糖。量子力学计算[DFT 和 DLPNO-CCSD(T)]支持 Ni 到 Ni 氧化加成途径,然后是自由基加成和内球烯丙基化的反应机理假设。

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