Efficient Aliphatic C−H Bond Oxidation Catalyzed by Manganese Complexes with Hydrogen Peroxide

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Abstract
A tetradentate nitrogen ligand containing a benzimidazole ring and an electron‐rich pyridine ring was developed, the resulting manganese complex exhibited good activity in the C−H oxidation of simple alkanes. In particular, cyclic aliphatic alkanes were transformed into ketones in very good yields (up to 89 %) by using environmentally benign H2O2 as the terminal oxidant. This protocol was also applied successfully in benzylic C−H oxidation, giving the corresponding ketones with very good selectivities. In addition, tertiary C−H bond oxidation of complex molecules by the manganese complex showed potential utility for assembling alcohols with good selectivity in late‐stage chemical synthesis.
Funding Information
  • National Natural Science Foundation of China (21473226, 21773273)
  • Natural Science Foundation of Jiangsu Province (BK20170420)

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