1217275-79-0Relevant articles and documents
Highly efficient ion-tagged catalyst for the enantioselective Michael addition of aldehydes to nitroalkenes
Lombardo, Marco,Chiarucci, Michel,Quintavalla, Arianna,Trombini, Claudio
supporting information; experimental part, p. 2801 - 2806 (2010/04/05)
The ion-tagged diphenylprolinol silyl ether 6 very efficiently catalyzes the asymmetric Michael addition of aliphatic aldehydes to nitroalkenes with ee of up to > 99.5% at low catalyst loadings (0.25-5 mol%) and using only a slight excess of aldehydes (1.2-2 equiv.). This new organocatalyst can be used with the same outstanding efficiency in a wide variety of solvents and reaction coditions.