Generation of N-Acyl Iminium Ions from Ionization-Rearrangement Reactions of N-Triflyloxy Amides

Article abstract of DOI:10.1016/S0040-4039(00)76872-9

N-Triflyloxy amides undergo ionization in refluxing isopropanol to give N-acyliminium ions which can be trapped by addition of allyltrimethylsilane to the reaction mixture.Alternatively they can be converted to N-(isopropoxy)alkyl amides and then back to