Loh, Ying Kai Successive Protonation of an N-Heterocyclic Imine Derived Carbonyl: Superelectrophilic Dication Versus Masked Acylium Ion. [electronic resource] - Angewandte Chemie (International ed. in English) Dec 2018 - 16559-16563 p. digital Publication Type: Journal Article ISSN: 1521-3773 Standard No.: 10.1002/anie.201810709 doi