Brønsted acid-catalyzed radical CH functionalization of acetone with N-allyl anilines to give 3-(3-oxobutyl)indolines
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Add time:08/25/2019 Source:sciencedirect.com
K2S2O8 was unprecedentedly used instead of tert-butyl hydroperoxide (TBHP) in Brønsted 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.
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