4.1 Article

Efficient oxidation of ethers with pyridine N-oxide catalyzed by ruthenium porphyrins

Journal

JOURNAL OF PORPHYRINS AND PHTHALOCYANINES
Volume 19, Issue 1-3, Pages 411-416

Publisher

WORLD SCI PUBL CO INC
DOI: 10.1142/S1088424615500297

Keywords

ruthenium catalyst; porphyrin; pyridine N-oxide; ether; oxidation

Funding

  1. Ministry of Education, Culture, Sports, Science and Technology, Japan [19028054, 20037056]
  2. Grants-in-Aid for Scientific Research [19028054, 20037056, 15K08027, 25460019, 24590142] Funding Source: KAKEN

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We found that oxidation of cyclic ethers with the Ru porphyrin-heteroaromatic N-oxide system gave lactones or/and ring-opened oxidized products with regioselectivity. A relatively high kinetic isotope effect was observed in the ether oxidation, suggesting that the rate-determining step is the first hydrogen abstraction.

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