N-苄基丙烯酰胺的合成

Synthesis of N-Benzyl Acrylamide

以丙烯腈和苯甲醇为原料，浓硫酸作催化剂，合成了N-苄基丙烯酰胺（N-BAA）。考察了反应温度、反应时间和催化剂用量等因素对产物收率的影响，得出了最佳反应条件：n（丙烯腈）：n（苯甲醇）：n（浓硫酸）=3：1：1．2，反应时间3h，反应温度60℃。在最佳条件下，N-BAA的收率可达92％。每100g粗产物用10％氢氧化钠溶液提纯，精制产物纯度可达99．80％，熔点为64～65℃。通过红外光谱对产物结构进行了表征。

N - Benzylacryl amide （ N - BAA） was synthesized using acrylonitrile and benzyl alcohol as raw materials and sulfuric acid as catalyst. The effects of main reaction conditions on the yield of N - BAA were examined. The optimum conditions were obtained as follows ： n（acrylonitrile） ： n （ benzyl alcohol） ： n （ sulfuric acid） = 3 ： 1 ： 1.2, reaction time 3 h, reaction temperature 60℃. The yield of the product N - BAA was 92 % under above conditions. The purity and melting point of the product after purified with 10% NaOH were 99.80% and 64 - 65℃ respective- ly. The final product was identified by IR.