Na-Y zeolite as a versatile heterogeneous catalyst for the hydroamination of methyl acrylate with amines

摘要

Hydroamination of methyl acrylate with various aromatic, aliphatic, cyclic and heterocyclic amines was examined over Na-Y zeolite as a solid catalyst. Among the typical zeolites, Na-Y zeolite effectively catalyzed the reaction to give the corresponding β-amino acid esters in moderate to excellent yields. The catalytic activity was strongly affected by nature of amine. The reactions using recovered catalyst also occurred without significant decrease in the catalytic activity during four recycles. The regeneration of used Na-Y zeolite can be performed by the calcination in air stream.