Efficient one-pot synthesis of enantiomerically pure <i>N</i>-protected-α-substituted piperazines from readily available α-amino acids
作者:Mouhamad Jida、Steven Ballet
DOI:10.1039/c7nj04039c
日期:——
A new pathway towards enantiomerically pure 3-substituted piperazines, bearing a benzyl protectinggroup, has been developed in good overall yields (83–92%), starting from commercially available N-protected aminoacids. The methodology represents an efficient and simple one-pot procedure, employing a synthetic sequence consisting of an Ugi-4 component reaction, a Boc-deprotection, an intramolecular