a CSIRO Molecular and Health Technologies, Bayview Avenue, Clayton, VIC 3168, Australia b School of Chemistry, Bio 21 Institute, University of Melbourne, Parkville, VIC 3010, Australia
Abstract:
A domino cyclization reaction of the bis-unsaturated ketone 3 with hydroxylamine proceeds with good yield and high stereoselectivity, in a flow reactor system. The tricyclic spiropiperidine products 5 and 2 obtained are valuable building blocks for the synthesis of analogues of the histrionicotoxin alkaloids.