A novel synthetic route to phenyl-substituted pyridines synthesis of [1] benzopyrano[4,3-b]pyridines, [1]benzothiopyrano[4,3-b]bpyridines and pyrido[3,2-b][1,4]benzothiazines(1-azaphenothiazines)
作者:D.V. Tyndall、T. Al Nakib、M.J. Meegan
DOI:10.1016/0040-4039(88)85265-1
日期:——
4-diphenyl-2-methoxypyridine-3-carbonitrile. This reaction has been applied to a general synthesis of phenyl-substituted [1]benzopyrano[4,3-pyridines, [1]benzothiopyrano[4,3-]pyridines and pyrido[3,2- [1,4]benzothiazines(1-azaphenothiazines).
1,3-二苯基丙烯酮与丙二腈在碱中的反应得到1,4-二苯基-2-甲氧基吡啶-3-甲腈。该反应已应用于一般合成苯基取代的[1]苯并吡喃并[4,3-吡啶],[1]苯并噻吩并吡喃并[ 4,3- ]吡啶和吡啶并[3,2- [1,4]苯并噻嗪(1 -氮杂吩噻嗪)。