Pictet–Spengler reaction based on in situ generated α-amino iminium ions through the Heyns rearrangement

Abstract

A useful tandem reaction via the Heyns rearrangement and Pictet–Spengler reaction was developed which ensured the synthesis of complex N-heteropolycycles containing tetrahydro-β-carboline with high yield (up to 96%) and dr (99 : 1).