名称:
A Convenient Synthesis of 5-Cyano-6-dialkylamino-2-hydroxy-3-methoxycarbonyl-2-methyl-4-(2- or 4-nitrophenyl)-1,2,3,4-tetrahydropyridines and their Dehydration to 5-Cyano-6-dialkylamino-3-methoxycarbonyl-2-methyl-4-(2- or 4-nitrophenyl)-1,4-dihydropyridines
摘要:
氰基乙脒与 2-[(硝基苯基)亚甲基]-3-氧代丁酸甲酯反应以高产率生成 2-羟基-1,2,3,4-四氢吡啶。这些化合物可以通过在含有催化量的对甲苯磺酸的苯中加热脱水为1,4-二氢吡啶。