Graphene oxide as a catalyst for one-pot sequential aldol coupling/aza-Michael addition of amines to chalcones through in situ generation of Michael acceptors under neat conditions
bromide (TBAB) was found to function as an efficient catalyst for one-pot sequential aldol coupling/aza-Michaeladdition of amines to chalcones in a single reaction vessel. Benzaldehydes and acetophenone were coupled in situ to produce their corresponding chalcones which underwent a subsequent aza-Michaeladdition under solvent-free condition. This procedure avoids the use of precious metals and the heterogeneous
Screening Approach for Chiral Separation of β-Aminoketones by HPLC on Various Polysaccharide-Based Chiral Stationary Phases
作者:Khadidja Addadi、Khaled Sekkoum、Nasser Belboukhari、Abdelkrim Cheriti、Hassan Y. Aboul-Enein
DOI:10.1002/chir.22434
日期:2015.5
Nine β‐aminoketones were synthesized viaMannichreaction when benzaldehyde was condensed with some primary amines and acetophenone. The purified compounds were identified by using spectroscopic methods. The enantiomeric separation of these derivatives was carried out by high‐performance liquid chromatography (HPLC) using several coated and immobilized polysaccharide stationary phases, namely, Chiralcel®