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Selective Late‐Stage Oxygenation of Sulfides with Ground‐State Oxygen by Uranyl Photocatalysis
Oxygenation is a fundamental transformation in synthesis. Herein, we describe the selective late‐stage oxygenation of sulfur‐containing complex molecules with ground‐state oxygen under ambient conditions. The high oxidation potential of the active uranyl cation (UO22+) enabled the efficient synthesi...
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Published in: | Angewandte Chemie International Edition 2019-09, Vol.58 (38), p.13499-13506 |
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Main Authors: | , , , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | Oxygenation is a fundamental transformation in synthesis. Herein, we describe the selective late‐stage oxygenation of sulfur‐containing complex molecules with ground‐state oxygen under ambient conditions. The high oxidation potential of the active uranyl cation (UO22+) enabled the efficient synthesis of sulfones. The ligand‐to‐metal charge transfer process (LMCT) from O 2p to U 5f within the O=U=O group, which generates a UV center and an oxygen radical, is assumed to be affected by the solvent and additives, and can be tuned to promote selective sulfoxidation. This tunable strategy enabled the batch synthesis of 32 pharmaceuticals and analogues by late‐stage oxygenation in an atom‐ and step‐efficient manner.
The late‐stage oxygenation of sulfur‐containing complex molecules was achieved with ground‐state oxygen under ambient conditions. Use of the uranyl cation (UO22+) as the active photocatalyst enabled the synthesis of sulfone and sulfoxide derivatives of 32 pharmaceuticals in an atom‐ and step‐efficient manner. |
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ISSN: | 1433-7851 1521-3773 |
DOI: | 10.1002/anie.201906080 |