NHC-catalysed azalactone ring-opening and piperidine ring-closing cascade with α,β-unsaturated aldehydes (enals) in a one-pot operation is reported. The present reaction cascade offers a convenient method for a highly diastereoselective synthesis of multifunctionalised piperidines in excellent yields under mild conditions.
据报道,在一锅操作中,通过NHC催化的吖内酯开环和
哌啶闭环级联反应,结合α,β-不饱和醛(烯醛),实现了多官能化
哌啶的高度非对映选择性合成,产率极佳,条件温和。