Annulation of functionalized hexadienones as an efficient regioselective approach to N-aryl-2-trifluoromethyl)-4-pyridinamines
作者:Maria T. Cocco、Cenzo Congiu、Valentina Onnis
DOI:10.1016/s0040-4039(99)00758-3
日期:1999.6
Readily accessible fluorinated N-arylenaminones 3 were reacted with N,N-dimethylformamide dimethylacetal to produce functionalized hexadienones 4. Ringclosure of 4 with ammonium acetate afforded selectively N-aryl-2-(trifluoromethyl)-4-pyridinamines 5 in good to excellent yields.