Water-Compatible Iminium Activation: Organocatalytic Michael Reactions of Carbon-Centered Nucleophiles with Enals
作者:Claudio Palomo、Aitor Landa、Antonia Mielgo、Mikel Oiarbide、Ángel Puente、Silvia Vera
DOI:10.1002/anie.200703261
日期:2007.11.12
Iminium Catalysis inside a Self-Assembled Supramolecular Capsule: Modulation of Enantiomeric Excess
作者:Thomas M. Bräuer、Qi Zhang、Konrad Tiefenbacher
DOI:10.1002/anie.201602382
日期:2016.6.27
The noncovalent combination of a supramolecular host with iminiumorganocatalysis is described. Due to cation–π interactions the reactiveiminium species is held inside the host and reacts in this confined environment. The products formed differ up to 92 % ee from the control experiments without added host. A model rationalizing the observed difference is presented.