acid-assisted catalytic strategy for ketonic radical generation, and the first Brønsted acid-catalyzed radical CH functionalization of acetone across unactivated alkenes is presented. In the presence of TsOH and K2S2O8, N-allyl anilines underwent addition/cyclization cascade with acetone to afford 3-(3-oxobutyl)indolines with exo-selectivity and broad substrate scope at a relatively low temperature.
在布朗斯台德酸辅助的酮基自由基催化反应策略中,用K 2 S 2 O 8代替了氢过氧化叔丁基(
TBHP),这是前所未有的,并且首次提出了布朗斯台德酸催化
丙酮在未活化烯烃上的自由基C H官能化。在TsOH和K 2 S 2 O 8的存在下,
N-烯丙基苯胺与
丙酮进行加成/环化级联反应,从而在相对较低的温度下获得具有外切选择性和广泛的底物范围的3-(3-氧代丁基)二氢
吲哚。