Highly Reactive Manganese(IV)-Oxo Porphyrins Showing Temperature-Dependent Reversed Electronic Effect in C-H Bond Activation Reactions
- 주제(기타) Chemistry, Multidisciplinary
- 등재 SCIE, SCOPUS
- 발행기관 AMER CHEMICAL SOC
- 발행년도 2019
- 총서유형 Journal
- URI http://www.dcollection.net/handler/ewha/000000161356
- 본문언어 영어
- Published As http://dx.doi.org/10.1021/jacs.9b04496
- PubMed https://pubmed.ncbi.nlm.nih.gov/31337211
초록/요약
We report that Mn(IV)-oxo porphyrin complexes, Mn-IV(O)(TMP) (1) and Mn-IV(O)(TDCPP) (2), are capable of activating the C-H bonds of hydrocarbons, including unactivated alkanes such as cyclohexane, via an oxygen non-rebound mechanism. Interestingly, 1 with an electron-rich porphyrin is more reactive than 2 with an electron-deficient porphyrin at a high temperature (e.g., 0 degrees C). However, at a low temperature (e.g., -40 degrees C), the reactivity of 1 and 2 is reversed, showing that 2 is more reactive than 1. To the best of our knowledge, the present study reports the first example of highly reactive Mn(IV)-oxo porphyrins and their temperature-dependent reactivity in C-H bond activation reactions.
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