ethyl 10-<(dimethylamino)methylene>-4-oxo-4,6,7,8,9,10-hexahydroazepino<1,2-a>pyrimidine-3-carboxylate 、
苯胺 在
盐酸 、
sodium acetate 、 sodium nitrite 作用下,
生成
ethyl (E)-4-oxo-10-phenylhydrazono-7,8,9,10-tetrahydro-4H,6H-azepino(1,2-a)pyrimidine-3-carboxylate 、 ethyl (Z)-4-oxo-10-phenylhydrazono-7,8,9,10-tetrahydro-4H,6H-azepino(1,2-a)pyrimidine-3-carboxylate