Reaction of 2-Polyfluoroalkylchromones with 1,3,3-Trimethyl-3,4-dihydroisoquinolines and Methylketimines as a Direct Route to Zwitterionic Axially Chiral 6,7-Dihydrobenzo[<i>a</i>]quinolizinium Derivatives and 2,6-Diaryl-4-polyfluoroalkylpyridines
作者:Vyacheslav Ya. Sosnovskikh、Boris I. Usachev、Aleksei Yu. Sizov、Ivan I. Vorontsov、Yurii V. Shklyaev
DOI:10.1021/ol0351448
日期:2003.8.1
2-Polyfluoroalkylchromones react with 1,3,3-trimethyl-3,4-dihydroisoquinolines to give zwitterionic axially chiral 6,7-dihydrobenzo[a]quinolizinium derivatives in high yields. In addition, performing this reaction with aromatic methylketimines is a simple and convenient synthesis of 2,6-diaryl-4-polyfluoroalkylpyridines.