Reactions of polyfluorocarbonyl compounds with 1,3,3-trimethyl-3,4-dihydroisoquinoline and its derivatives
摘要:
1,3,3-Trimethyl-3,4-dihydroisoquinolines, which exist in the imine form, undergo C-hydroxyalkylation upon reaction with hexafluoroacetone and esters of trifluoropyruvic acid at the C1-CH3 group at 20-degrees-C. The products with the ketoesters are converted upon heating to gamma-lactams. Derivatives of 1,3,3-trimethyl-3,4-dihydroisoquinoline substituted at C1-CH3 group and existing in the enamine form, react with esters of trifluoropyruvic acid at 20-degrees-C to give exclusively gamma-lactams and do not give reaction products with hexafluoroacetone.