| Abstract: | Aziridinium ions were prepared from aziridines bearing a functionality on a ring carbon and as isolated crystalline fluorosulfate salts either by protonation in fluorosulfuric acid solution or by alkylation with methyl fluorosulfate. The structural assignement of these ions is based on nmr spectra and on quenching experiments with sodium carbonate. The configurations of the epimeric ions have been assigned by the nuclear Qverhauser effect and the stereoselectivity in protonation is disucussed. |
