Gl. Araldi et al., AN ENANTIOSELECTIVE SYNTHESIS OF 2-ALKYL-3-PHENYLTROPANES BY AN ASYMMETRIC 1,3-DIPOLAR CYCLOADDITION REACTION, Chemical communications, (19), 1997, pp. 1875-1876
A method for gaining access to 2-alkyl-3-phenyl-substituted tropanes u
sing the chiral dipolarophile (R)-p-tolyl vinyl sulfoxide in the asymm
etric 1,3-dipolar cycloaddition reaction with the oxidopyridinium beta
ine 4 is described.