Asymmetric synthesis via aziridinium ions: exploring the stereospecificity of the ring opening of aziridinium ions and a formal synthesis of (−)-swainsonine

Sally J. Oxenford, Stephen Moore, Giorgio Carbone, Graeme Barker, Peter O'Brien, Mark R. Shipton, John Gilday, Kevin R. Campos

Research output: Contribution to journalArticle

Abstract

The use of aziridinium ions in two different projects is described. First, the stereospecificity of the ring opening of aziridinium ions with MeNH2 as a route to chiral diamines has been explored. When the aziridinium ion contained a phenyl or para-methoxyphenyl substituent, stereospecific ring opening occurred. In contrast, switching the para-methoxy group to a para-N,N-dimethylamino group gave a racemic diamine product. Second, starting from N-Boc pyrrolidine, asymmetric lithiation-trapping-ring expansion (via an aziridinium ion) was used to synthesise a piperidine alcohol. In this way, a formal synthesis of (−)-swainsonine was completed.
Original languageEnglish
Pages (from-to)1563-1568
Number of pages6
JournalTetrahedron: Asymmetry
Volume21
Issue number11-12
DOIs
Publication statusPublished - 23 Jun 2010

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