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Electronic Tuning of Iron-Oxo-Mediated CH Activation: Effect of Electron-Donating Ligand on Selectivity.
- Source :
-
Chemistry - A European Journal . Oct2013, Vol. 19 Issue 43, p14697-14701. 5p. - Publication Year :
- 2013
-
Abstract
- We have reported previously that an iron(III) complex supported by an anionic pentadentate monoamido ligand, dpaqH (dpaqH=2-[bis(pyridin-2-ylmethyl)]amino- N-quinolin-8-yl-acetamido), promotes selective CH hydroxylation with H2O2 with high regioselectivity. Herein, we report on the preparation of FeIII-dpaq derivatives that have a series of substituent groups at the 5-position of a quinoline moiety in the parent ligand dpaqH (dpaqR, R: OMe, H, Cl, and NO2), and examine them with respect to their catalytic activity in CH hydroxylation with H2O2. As the substituent group becomes more electron-withdrawing, both the selectivity and the turnover number increase, but the selectivity of epoxidation shows the opposite trend. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09476539
- Volume :
- 19
- Issue :
- 43
- Database :
- Academic Search Index
- Journal :
- Chemistry - A European Journal
- Publication Type :
- Academic Journal
- Accession number :
- 90820199
- Full Text :
- https://doi.org/10.1002/chem.201302111