N-Heterocyclic Carbenes: V. Synthesis of imidazolium salts from lupane series
摘要:
By the reaction of N-alkyl- and N-arylimidazoles with 30-bromo-3,28-diacetoxylup-20(29)-ene a series was synthesized of unsymmetrically substituted chiral imidazolium bromides with a lupane fragment.