One‐Pot Tandem Catalysis: A Concise Route to Fused Bicyclic Scaffolds from Acyclic β‐Ketoesters and Alkynyl Aldehydes
作者:Lu Liu、Lai Wei、Yong Lu、Junliang Zhang
DOI:10.1002/chem.201001729
日期:2010.10.18
rapid and highly efficient route to fused polycyclic scaffoldsfrom simple, readily available β‐ketoesters and alkynylaldehydes was developed (see scheme) as a one‐pot reaction by combining three fundamental reactions, that is, the Knoevenagel condensation, Nazarov cyclization, and Conia‐ene reactions. Piperidinium acetate was found to be a tandem catalyst in these one‐pot reactions.