A Metallaphotoredox Strategy for the Cross‐Electrophile Coupling of α‐Chloro Carbonyls with Aryl Halides
作者:Tiffany Q. Chen、David W. C. MacMillan
DOI:10.1002/anie.201909072
日期:2019.10.7
effective for a wide variety of aryl bromide coupling partners, is predicated upon a halogen atom abstraction/nickel radical-capture mechanism that is generically successful across an extensive range of carbonyl substrates. The construction and use of arylacetic acid products have further enabled two-step protocols for the delivery of valuable building blocks for medicinal chemistry, such as aryldifluoromethyl
在这里,我们证明了金属氧还原催化的亲电子交联机理为多种活化烷基氯的α-芳基化反应提供了统一的方法,包括α-氯酮,α-氯酸酯,α-氯酰胺,α-氯羧酸和苄基氯。 。该策略对多种芳基溴化物偶联伙伴有效,基于卤素原子的提取/镍自由基捕获机制,该机制普遍适用于广泛的羰基底物。芳基丙烯酸产品的构建和使用进一步实现了两步协议,可用于交付药用化学的重要组成部分,例如芳基二氟甲基和二芳基甲烷图案。