Organic Letters p. 6270 - 6274 (2019)
Update date:2022-08-11
Topics:
Zhu, Jia-Nan
Wang, Wen-Kang
Zhu, Yuan
Hu, Yin-Qiu
Zhao, Sheng-Yin
A reductive radical relay strategy for the construction of fused benzo[e]isoindole-1,3,5-trione through a reaction of α-bromo ketones with maleimides in the presence of Ir(ppy)3 under visible-light irradiation is described. The protocol employs very mild reaction conditions and offers satisfactory yields. Moreover, the reaction proceeds through a cascade C(sp3)-Br/C(sp2)-H functionalization, double C-C bond formation, and oxidative aromatization sequence.
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