Reductive Alkylation of Alkenyl Acetates with Alkyl Bromides by Nickel Catalysis
作者:Rong‐De He、Yunfei Bai、Guan‐Yu Han、Zhen‐Zhen Zhao、Xiaobo Pang、Xiaobo Pan、Xue‐Yuan Liu、Xing‐Zhong Shu
DOI:10.1002/anie.202114556
日期:2022.1.21
A new C−C bond-forming reaction between alkenyl acetates and alkyl bromides was achieved by reductive nickel catalysis. This method offers very mild reaction conditions for facile and precise synthesis of structurally versatile aliphatic alkenes using readily available and stable alkenyl reagents. It allows for a gram-scale reaction and modification of biologically active molecules, and it affords
Synthesis of β-CF3 Ketones through Copper/Silver Cocatalyzed Oxidative Coupling of Enol Acetates with ICH2CF3
作者:Wei Deng、Jiannan Xiang、Niannian Yi、Yi Xiong、De Chen、Sheng Zeng、Chaozhihui Cheng、Pengjie Wang
DOI:10.1055/s-0037-1610257
日期:2018.10
A simple method for the synthesis of β-CF3 ketones through copper/silver cocatalyzed oxidative coupling of enol acetates with ICH2CF3 has been developed. Enol acetates were chosen as the source of carbonyl group, giving the β-CF3 ketones in moderate yields. Control experiments imply that a radical process maybe involved in this reaction.
A novel and simple strategy for radical α-monofluoroalkylation by organic photoredox catalysis has been developed.
已开发出一种新颖简单的策略,通过有机光氧化还原催化实现了基团α-单氟烷基化。
Catalyst‐Free and Oxidant‐Free Cascade Difluoroalkylation and Controllable C−F Bond Activation of Aryl Enol Acetates for the Synthesis of β‐Fluoroenones and β‐Enaminones
作者:Wenshuang Li、Ruyan Liu、Ruonan Li、Shihaozhi Wang、Dianjun Li、Jinhui Yang
DOI:10.1002/adsc.202100681
日期:2021.12.7
Arylenolacetates and DMF could promote radical difluoroalkylation of arylenolacetates to generate α,α-difluoro-γ-ketoacetates without a catalyst, an oxidant, or a base. When using different bases, β-fluoroenones and β-enaminones were synthesized by controllableC−Fbondactivation. These transformations provide an alternative method for the cascadedifluoroalkylation and C−F bonds activation of