The development of readily tunable and regioselective C-H functionalization reactions that operate solely through catalyst control remains a challenge in modern organic synthesis. Herein, we report that simple silver catalysts supported by common nitrogenated ligands can be used to tune a nitrene transfer reaction between two different types of C-H bonds. The results reported herein represent the first example of ligand-controlled and site-selective silver-promoted C-H amination.
Iron-Catalyzed Regioselective Transfer Hydrogenative Couplings of Unactivated Aldehydes with Simple Alkenes
作者:Yan-Long Zheng、Yan-Yao Liu、Yi-Mei Wu、Yin-Xia Wang、Yu-Tong Lin、Mengchun Ye
DOI:10.1002/anie.201602130
日期:2016.5.17
An FeBr3‐catalyzed reductive coupling of various aldehydes with alkenes that proceeds through a direct hydride transfer pathway has been developed. With iPrOH as the hydrogen donor under mild conditions, previously challenging coupling reactions of unactivated alkyl and aryl aldehydes with simple alkenes, such as styrene derivatives and α‐olefins, proceeded smoothly to furnish a diverse range of functionalized
作者:Juliet M. Alderson、Alicia M. Phelps、Ryan J. Scamp、Nicholas S. Dolan、Jennifer M. Schomaker
DOI:10.1021/ja5094309
日期:2014.12.3
The development of readily tunable and regioselective C-H functionalization reactions that operate solely through catalyst control remains a challenge in modern organic synthesis. Herein, we report that simple silver catalysts supported by common nitrogenated ligands can be used to tune a nitrene transfer reaction between two different types of C-H bonds. The results reported herein represent the first example of ligand-controlled and site-selective silver-promoted C-H amination.
Inverting Steric Effects: Using “Attractive” Noncovalent Interactions To Direct Silver-Catalyzed Nitrene Transfer
作者:Minxue Huang、Tzuhsiung Yang、Jonathan D. Paretsky、John F. Berry、Jennifer M. Schomaker
DOI:10.1021/jacs.7b07619
日期:2017.12.6
directing the NT; computational studies support the involvement of π···π and Ag···π interactions between catalyst and substrate, primarily by lowering the energy of the directed transition state and reaction conformers. A simple Hess’s law relationship can be employed to predict selectivities for new substrates containing competing NCIs. The insights presented herein are poised to inspire the design of other