Unexpected PF6 Anion Metathesis during the Bischler–Napieralski Reaction: Synthesis of 3,4-Dihydroisoquinoline Hexafluorophosphates and Their Tetrahydroisoquinoline Related Alkaloids
作者:Carlos Puerto Galvis、Mario Macías、Vladimir Kouznetsov
DOI:10.1055/s-0037-1610684
日期:2019.5
N-phenethylcinnamamides were subjected to the Bischler–Napieralskireaction to furnish diverse 1-styryl-3,4-dihydroisoquinolines. We noticed that the desired products were unstable when the reaction was performed under conventional solvent conditions. However, when [bmim]PF6 was used as the reaction media, the nature of the Bischler–Napieralskireaction promoted an unusual in situ ionic interchange