Aza-Michael addition under catalyst- and solvent-free conditions worked well to install various fluoroalkylated amino acid derivatives and three trifluoromethylated heterocycles.
A practical, highly enantioselective method for the synthesis of short-chain aliphatic beta-amino acidesters was developed starting from prochiral and easily accessible Substrates. This chemoenzymatic approach is based oil a nonenzymatic aza-Michael addition of benzylamine to enoates and subsequent lipase-catalyzed resolution via enantioselective aminolysis. The two reactions are carried out as a