Visible-Light Photoredox-Catalyzed Synthesis of Nitrones:
Unexpected Rate Acceleration by Water in the Synthesis of Isoxazolidines
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Abstract
A new oxidative [3 + 2] cycloaddition
of <i>N</i>-substituted
hydroxylamines with alkenes was established under visible light photoredox
catalysis. This novel protocol provides a rapid, mild, and efficient
access to valuable five-membered ring isoxazolidine heterocycles in
a concise fashion