A chameleon catalyst for nonheme iron-promoted olefin oxidation

作者：Iyer Shyam R; Javadi Maedeh Moshref; Feng Yan; Hyun Min Young; Oloo Williamson N; Kim Cheal; Que Lawrence Jr^*

来源：Chemical communications, 2014, 50(89): 13777-13780.

DOI：10.1039/c4cc06164k

We report the chameleonic reactivity of two nonheme iron catalysts for olefin oxidation with H2O2 that switch from nearly exclusive cis-dihydroxylation of electron-poor olefins to the exclusive epoxidation of electron-rich olefins upon addition of acetic acid. This switching suggests a common precursor to the nucleophilic oxidant proposed to Fe-III-eta(2)-OOH and electrophilic oxidant proposed to Fe-V(O)(OAc), and reversible coordination of acetic acid as a switching pathway.

• 出版日期2014