Decarboxylative 1,4-Addition of α-Oxocarboxylic Acids with Michael Acceptors Enabled by Photoredox Catalysis
作者:Guang-Zu Wang、Rui Shang、Wan-Min Cheng、Yao Fu
DOI:10.1021/acs.orglett.5b02392
日期:2015.10.2
Enabled by iridium photoredox catalysis, 2-oxo-2-(hetero)arylacetic acids were decarboxylatively added to various Michael acceptors including α,β-unsaturated ester, ketone, amide, aldehyde, nitrile, and sulfone at room temperature. The reaction presents a new type of acyl Michael addition using stable and easily accessible carboxylic acid to formally generate acyl anion through photoredox-catalyzed
在室温下,通过铱光氧化还原催化,将2-氧代-2-(杂)芳基丙烯酸脱羧地添加到各种迈克尔受体中,包括α,β-不饱和酯,酮,酰胺,醛,腈和砜。该反应提供了一种新型的酰基迈克尔加成反应,它使用稳定且易于获得的羧酸通过光氧化还原催化的自由基脱羧反应正式生成酰基阴离子。