Access to Nitrones Enabled by Visible Light Photoredox Catalysis
Visible-light-induced photoredox catalysis has received considerable attention lately and has been used as a key strategy in organic synthesis. Nevertheless, visible light photoredox catalytic reactions of nitroalkanes are particularly scarce, and most examples have been conducted on nitroaromatic compounds. Recently, a new synthesis of oximes through photoredox catalysis of nitro compounds (mainly primary nitroalkanes) by the synergistic actions of visible-light irradiation and Lewis acid promoted dehydration was reported. The group of Professor Bor-Cherng Hong at the National Chung Cheng University (Taiwan) has now developed a concise visible-light-induced photocatalytic conversion of nitro compounds carrying various functionalities into nitrone derivatives in high yield.
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