期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 56, 期 27, 页码 8004-8008出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201703611
关键词
1,5-HAT processes; amination; cooperative catalysis; iodine catalysis; photoredox catalysis
资金
- Spanish Ministry for Economy and Competitiveness
- FEDER [CTQ2014-56474R]
- Severo Ochoa Excellence Accreditation [SEV-2013-0319]
- Schweizerischer Nationalfonds [20020_169120]
- Alexander von Humboldt Foundation
- Fonds der Chemischen Industrie
An unprecedented method that makes use of the cooperative interplay between molecular iodine and photo-redox catalysis has been developed for dual light-activated intramolecular benzylic C-H amination. Iodine serves as the catalyst for the formation of a new C-N bond by activating a remote C-sp3-H bond (1,5-HAT process) under visible-light irradiation while the organic photoredox catalyst TPT effects the reoxidation of the molecular iodine catalyst. To explain the compatibility of the two involved photochemical steps, the key N-I bond activation was elucidated by computational methods. The new cooperative catalysis has important implications for the combination of non-metallic main-group catalysis with photocatalysis.
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