2024-03-28T08:02:55Zhttp://uvadoc.uva.es/oai/requestoai:uvadoc.uva.es:10324/217422021-06-24T07:41:57Zcom_10324_1186com_10324_931com_10324_894com_10324_28542com_10324_952col_10324_1404col_10324_28543
Molina de la Torre, Jesús Ángel
Albéniz Jiménez, Ana Carmen
2016-12-14T19:38:26Z
2016-12-14T19:38:26Z
2014
ChemCatChem, 2014, Volume 6, Issue 12, p. 3547–3552
1867-3880
http://uvadoc.uva.es/handle/10324/21742
10.1002/cctc.201402767
12
ChemCatChem
6
A bromoalkyl functionalized vinylic addition polynorbornene has been used as an inert new scaffold to support imidazolium salts by straightforward nucleophilic substitution using different imidazoles ImR (R=Me, mesityl, 2,6-iPr2C6H3). These polymers, VA-PNB-(CH2)4ImRBr, are precursors of N-heterocyclic carbenes which are useful as heterogeneous organocatalysts. The polymeric carbenes have been tested in two model reactions: The synthesis of saturated esters from α,β-unsaturated aldehydes and the conjugate umpolung reaction of α,β-unsaturated aldehydes for the synthesis of γ-butyrolactones. The supported catalyst (R=mesityl) is fully recyclable and can be recovered as an imidazolium salt and stored for further use.
eng
info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/4.0/
Attribution-NonCommercial-NoDerivatives 4.0 International
Chemistry
Catalysts
N-Heterocyclic Carbenes Supported on Vinylic Addition Polynorbornene: A Recyclable and Recoverable Organocatalyst
info:eu-repo/semantics/article