【摘要】 <正> 在前文所叙述的反应条件下’,苄叉丙酮或对甲氧基苄叉丙酮均能与芳香胺顺利发生Mannich反应: 我们共合成了15个Mannich碱,这些化合物的IR图谱均具有羰基吸收峰(1670 cm^-1)与仲胺基吸收峰(3400cm^-1),¹H NMR图谱在δ3.05及3.55 ppm有两组相互偶合的三重峰.更多还原

【Abstract】 In ethanol-HCl solution, arylamine-HCl and formaldehyde or the condensation product of arylamine and formaldehyde were directly reacted with benzylideneacetone to form 1-phenyl-3-keto-5-arylamino-1-pentene (1), 1, 2-diarylpiperidine-4-one (2) or its diethylacetal (3). With 4-methoxybenzylideneacetone as the acidic component, Mannich base (1) or the condensation product of 4-methoxybenzylideneacetone and arylamine—Shiff base (4) were obtained depending on the reaction temperature.更多还原