Photochemical [2 + 2 + 1] annulation of 2-vinyloxy arylalkynes with bromomalonates via energy transfer

Shuo Tang,Jiupeng Liu,Min Zhang,Dan Wang,Yong Wang,Jingjing Zhao,Pan Li

Organic Chemistry Frontiers（2024）

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摘要

A photochemical [2 + 2 + 1] radical annulation of 2-vinyloxy arylalkynes with bromomalonates has been developed. This protocol affords a metal-free, photocatalyst-free, oxidant-free and base-free approach to cyclopenta[b]benzofuran under...

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