2-Aminopyridinium ions activate nitroalkenes through hydrogen bonding.
2-Aminopyridinium ions were found to activate nitroalkenes toward conjugate addition of heteroaromatic compounds with low catalyst loadings and the Diels-Alder reaction with the periselectivity opposite to that observed with metal Lewis acids, raising the possibility that a 2-aminopyridinium core might be a promising catalaphore for the asymmetric catalyst design.
Takenaka
Norito
N
Department of Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables, Florida 33146-0431, USA. n.takenaka@miami.edu
Sarangthem
Robindro Singh
RS
Seerla
Sreehari Kumar
SK