Application of organolithium and related reagents in synthesis. Part 7. Synthesis and metallion of 4-methoxypicolin- and 2-methoxyisonicotin-anilides. A useful method for preparation of 2, 3, 4-trisubstituted pyridines
作者:Jan Epsztajn、Adam Bieniek、Mieczysław W. Płotka、Krzysztof Suwald
DOI:10.1016/s0040-4020(01)89209-7
日期:1989.1
The synthesis and metallation of 4-methoxypicolin- and 2-methoxyisonicotin-anilides as a way of regiospecific transformation of picolinic and isonicotinic acids into 2, 3, 4-trisubstituted pyridines, is described. The resulted C3 - alkylated derivatives underwent smooth acid - catalysed conversion into the corresponding pyridones.