Reported herein is a visible‐light‐mediated radical approach to the α‐alkylation of ketones. This method exploits the ability of a nucleophilic organocatalyst to generate radicals upon SN2‐based activation of alkyl halides and blue light irradiation. The resulting open‐shell intermediates are then intercepted by weakly nucleophilic silyl enol ethers, which would be unable to directly attack the alkyl
A Novel Ketonitrile Synthesis by Palladium-Catalyzed Carbonylative Coupling Reactions of Amides with Arylboronic Acids
作者:Wen-Peng Mai、Yang Liu、Hong-Dai Sui、Yong-Mei Xiao、Pu Mao、Kui Lu
DOI:10.1002/ejoc.201901396
日期:2019.12.31
A novel, efficient, and simple procedure to synthesize diverse ketonitriles by palladium‐catalyzed Suzuki coupling of amides through N–C cleavage has been developed. This procedure features mild conditions, a broad substrate scope, and easily prepared substrates, providing a simple and efficient access to a variety of ketonitriles.
Iron(III)-Light-Induced Homolysis: A Dual Photocatalytic Approach for the Hydroacylation of Alkenes Using Acyl Radicals via Direct HAT from Aldehydes
作者:Anurag Chinchole、Marco A. Henriquez、Diego Cortes-Arriagada、Alan R. Cabrera、Oliver Reiser
DOI:10.1021/acscatal.2c03315
日期:2022.11.4
generate acyl radicals from readily available aldehydes via hydrogen atom transfer (HAT). Synergistic cooperation, being supported by DFT studies, between earth-abundant iron(III)chloride and 9,10-diphenylanthracene (DPA) to activate the aldehyde for a HAT step proved to be an efficient, economic, and green route for the hydroacylation of electron-deficientalkenes under UV-light irradiation with broad functional
TBADT‐Mediated C‐C Bond Formation Exploiting Aryl Aldehydes in a Photochemical Flow Reactor
作者:Adam Cruise、Marcus Baumann
DOI:10.1002/cctc.202201328
日期:2023.1.20
Scaled Photochemical Reactions: A continuous flow approach for the photochemical synthesis of β-ketonitriles and related species is presented. This approach tolerates (hetero)aromatic substrates and uses readily available TBADT as an effective HAT catalyst reaching throughputs of up to 41 mmol/h.
缩放光化学反应:提出了一种用于光化学合成 β-酮腈和相关物种的连续流动方法。这种方法可耐受(杂)芳族底物,并使用现成的 TBADT 作为有效的 HAT 催化剂,达到高达 41 mmol/h 的吞吐量。