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Electronic effects of linker substitution on Lewis acid catalysis with Metal-organic frameworks

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F. Vermoortele, M. Vandichel, B. Van de Voorde, R. Ameloot, M. Waroquier, V. Van Speybroeck, D. De Vos
Angewandte Chemie int. Ed.
51(20), 4887-4890
2012
A1

Abstract 

Functionalized linkers can greatly increase the activity of metal–organic framework (MOF) catalysts with coordinatively unsaturated sites. A clear linear free-energy relationship (LFER) was found between Hammett σm values of the linker substituents X and the rate kX of a carbonyl-ene reaction. This is the first LFER ever observed for MOF catalysts. A 56-fold increase in rate was found when the substituent is a nitro group.

DOI 

http://dx.doi.org/10.1002/anie.201108565

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PDF icon 12 angewandte chem int ed 51(20)4887 Vermoortele.pdf

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