Facile preparation of pyrylium and pyridinium bromides under neutral conditions
作者:Eugene A. Cioffi、William F. Bailey
DOI:10.1016/s0040-4039(98)00370-0
日期:1998.4
Pyrylium and pyridinium bromides may be prepared in virtually quantitative yield by reaction of the corresponding base with an excess of tert-butyl bromide under reflux in chloroform solution.
通过在氯仿溶液中回流使相应的碱与过量的叔丁基溴反应,可以以几乎定量的产率制备溴化吡啶鎓和吡啶鎓。
Michaelis; Hoelken, Justus Liebigs Annalen der Chemie, 1904, vol. 331, p. 248