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.
描述了4-甲氧基吡啶啉-和2-甲氧基异烟酰胺-苯胺的合成和金属化,作为将吡啶甲酸和异烟酸酸区域特异性转化为2、3、4-三取代的吡啶的方法。所得的C 3-烷基化衍生物经历平滑的酸催化转化为相应的吡啶酮。