作者:Vlad Bacauanu、Sébastien Cardinal、Motoshi Yamauchi、Masaru Kondo、David F. Fernández、Richard Remy、David W. C. MacMillan
DOI:10.1002/anie.201807629
日期:2018.9.17
strategy for the difluoromethylation of aryl bromides by metallaphotoredox catalysis. Bromodifluoromethane, a simple and commercially available alkyl halide, is harnessed as an effective source of difluoromethyl radical by silyl‐radical‐mediated halogen abstraction. The merger of this fluoroalkyl electrophile activation pathway with a dual nickel/photoredox catalytic platform enables the difluoromethylation
在此,我们报告了一种通过金属光氧化还原催化芳基溴二氟甲基化的方便且广泛适用的策略。溴二氟甲烷是一种简单且市售的烷基卤化物,通过甲硅烷基介导的卤素抽象,可将其用作二氟甲基自由基的有效来源。这种氟烷基亲电试剂活化途径与双镍/光氧化还原催化平台的合并使得能够在温和条件下对多种芳基和杂芳基溴化物进行二氟甲基化。该过程的实用性在几种药物类似物的后期功能化中得到了体现。