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Cercosporin-Photocatalyzed [4+1]- and [4+2]-Annulations of Azoalkenes Under Mild Conditions
Published on: July 17, 2020
Visible-Light-Driven Photocatalytic [3+2]- and [3+2+3]-Annulation Reactions of N-[(Trimethylsilyl)methyl]phthalimide
Lin-Hong Jiang1, Xuan Wang1, Wen-Yu Li1
1State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou 730000, P. R. China.
Abstract:
Visible-light catalysis offers advantages over UV irradiation owing to its excellent functional group tolerance. Through visible-light-driven energy transfer catalysis, we developed [3+2]- and [3+2+3]-annulation reactions of N-[(trimethylsilyl)methyl]phthalimide with electron-deficient alkenes and alkynes. Distinct from previous reports, the regioselectivity observed in these reactions suggests that these reactions may proceed via pathways involving diradical intermediates.
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