Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 61, Issue 22, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202201662
Keywords
C(sp(3))-H Bonds; Electrophiles; Nickel; Redox Reactions; Thermal Reactions
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Funding
- National Natural Science Foundation of China [21871173]
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In this study, a mild and easy-to-operate Ni-catalyzed arylation and alkylation reaction was reported using Zn and tBuOOtBu as the external reductant and oxidant. This reaction enables carbofunctionalization of C(sp(3))-H bonds and preparation of intermediates of bioactive compounds and drug derivatives.
C(sp(3))-H bond coupling with carbon electrophiles remains rarely explored under thermo-driven hydrogen atom transfer (HAT) conditions due to the challenge of integrating oxidation and reduction in a single operation. We report here a Ni-catalyzed arylation and alkylation of C(sp(3))-H bonds with organohalides to forge C(sp(3))-C bonds by merging economical Zn and tBuOOtBu (DTBP) as the external reductant and oxidant. The mild and easy-to-operate protocol enables facile carbofunctionalization of N-/O-alpha- and cyclohexane C-H bonds, and preparation of a few intermediates of bioactive compounds and drug derivatives. Preliminary mechanistic studies implied addition of an alkyl radical to a Ni-II salt.
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