94162-50-2Relevant articles and documents
N-Acyliminium Ion Rearrangements: Generalities and Application to the Synthesis of Pyrrolizidine Alkaloids
Hart, David J.,Yang, Teng-Kuei
, p. 235 - 242 (2007/10/02)
N-Acyliminium ions of the 2-aza-1,5-hexadienyl type frequently rearrange to isomeric ions by a process which is formally a 2-aza-Cope rearrangement.When gem-dimethyl substitution is present at C-4 of the initially formed N-acyliminium ion, the rearranged