Room Temperature Aerobic Peroxidation of Organic Substrates Catalyzed by Cobalt(III) Alkylperoxo Complexes

Yunzhou Chen, Huatian Shi, Chi-Sing Lee, Shek-Man Yiu, Wai-Lun Man, Tai-Chu Lau

Research output: Contribution to journalArticlepeer-review

Abstract

Room temperature aerobic oxidation of hydrocarbons is highly desirable and remains a great challenge. Here we report a series of highly electrophilic cobalt(III) alkylperoxo complexes, CoIII(qpy)OOR supported by a planar tetradentate quaterpyridine ligand that can directly abstract H atoms from hydrocarbons (R′H) at ambient conditions (CoIII(qpy)OOR + R′H → CoII(qpy) + R′ + ROOH). The resulting alkyl radical (R′) reacts rapidly with O2 to form alkylperoxy radical (R′OO•), which is efficiently scavenged by CoII(qpy) to give CoIII(qpy)OOR′ (CoII(qpy) + R′OO → CoIII(qpy)OOR′). This unique reactivity enables CoIII(qpy)OOR to function as efficient catalysts for aerobic peroxidation of hydrocarbons (R′H + O2 → R′OOH) under 1 atm air and at room temperature.
Original languageEnglish
Pages (from-to)14445–14450
Number of pages6
JournalJournal of the American Chemical Society
Volume143
Issue number36
DOIs
Publication statusPublished - 15 Sep 2021

Scopus Subject Areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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