Aryloxide‐Facilitated Catalyst Turnover in Enantioselective α,β‐Unsaturated Acyl Ammonium Catalysis
Abstract: A new general concept for α,β‐unsaturated acyl ammonium catalysis is reported that uses p‐nitrophenoxide release from an α,β‐unsaturated p‐nitrophenyl ester substrate to facilitate catalyst turnover. This method was used for the enantioselective isothiourea‐catalyzed Michael addition of nitroalkanes to α,β‐unsaturated p‐nitrophenyl esters in generally good yield and with excellent enantioselectivity (27 examples, up to 79 % yield, 99:1 er). Mechanistic studies identified rapid and reversible catalyst acylation by the α,β‐unsaturated p‐nitrophenyl ester, and a recently reported variable‐time normalization kinetic analysis method was used to delineate the complex reaction kinetics.
- Location
-
Deutsche Nationalbibliothek Frankfurt am Main
- Extent
-
Online-Ressource
- Language
-
Englisch
- Bibliographic citation
-
Aryloxide‐Facilitated Catalyst Turnover in Enantioselective α,β‐Unsaturated Acyl Ammonium Catalysis ; volume:129 ; number:40 ; year:2017 ; pages:12450-12455 ; extent:6
Angewandte Chemie ; 129, Heft 40 (2017), 12450-12455 (gesamt 6)
- Creator
-
Matviitsuk, Anastassia
Greenhalgh, Mark
Antúnez, Diego‐Javier Barrios
Slawin, Alexandra M. Z.
Smith, Andrew D.
- DOI
-
10.1002/ange.201706402
- URN
-
urn:nbn:de:101:1-2022091219520113323943
- Rights
-
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Last update
-
15.08.2025, 7:20 AM CEST
Data provider
Deutsche Nationalbibliothek. If you have any questions about the object, please contact the data provider.
Associated
- Matviitsuk, Anastassia
- Greenhalgh, Mark
- Antúnez, Diego‐Javier Barrios
- Slawin, Alexandra M. Z.
- Smith, Andrew D.