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Communication | Regular issue | Vol 12, No. 9, 1979, pp.1147-1152
Published online, 1st January, 1970
DOI: 10.3987/R-1979-09-1147
Stereoselective Olefin Cyclisations of tert-α-Acyliminium Ions

J. Dijkink and W. N. Speckamp*

*Organic Chemistry Laboratory, University of Amsterdam, Nieuwe Achtergracht 129, 1018 WS Amsterdam, The Netherlands


Tert α-acyliminium ions are shown to exhibit excellent properties for inducing stereoselective olefin cyclisations. Starting from the appropriate alkene precursor bicyclic and tetracyclic ring systems are formed in good to excellent yields.