请那位化学高手 帮忙翻译一篇有机化学文章 谢谢了

来源:百度知道 编辑:UC知道 时间:2024/04/29 10:13:13
A solution of 45,7 g (0.38 mole) of freshly distilled (Note 1) phenylacetaldehyde in 100 ml benzene was cooled to 0°C and a solution of 15.5 g (0.5 mole) of anhydrous methylamine in benzene (Note 2) was added.An exothermic reaction occured with separation of water; start refluxing with a Dean-Stark trap attached to the reflux condenser to collect the water that is generated in the reaction.When no more water separates, distill off the solvent and distill the aldimine.
Methyl Grignard reagent is prepared by adding 71 g (0.5 mole) of methyl iodide to a suspension of 12.2 g (0.5 mole) of Mg turnings in 150 ml dry ether.Adding a crystal of iodine speeds up the reaction.After about 1/2 hour standing, cool the Grignard reagent to 0°C and add dropwise the aldimine obtained in the previous step (this better be ~0.32 mole!) dissolved in the minimum amount of dry ether.After the addition, remove the ice-bath and start refluxing the solution (I guess for about 2 hours).Afterwards, decompose

将一45.7g(0.38摩尔)的新蒸馏的苯乙醛溶到100ml苯溶液中,降温到0摄氏度,加入含15.5g(0.5摩尔)无水甲胺的苯溶液。
放热反应发生的同时有水生成;用一个dean-stark trap接在回流冷凝管上用于收集反应中生成的水。
当收集的水不再增加时,将溶剂蒸馏掉,收集醛亚胺馏分。

甲基格氏试剂的准备:加71g(0.5摩尔)碘甲烷到含12.2g(0.5摩尔)镁的150ml无水乙醚悬浊液中;加一粒碘加速反应。
反应持续半小时,将制得的格氏试剂降到0摄氏度,然后将前制得的醛亚胺 (this better be ~0.32 mole!)溶解在极少量的无水乙醚中,滴加到格氏试剂中。滴完后,去冰浴,开始加热回流(我猜大约2小时)。
然后滴加冰冷的稀盐酸(15%)直到pH小于2,以除去过量的格氏试剂。
分出并除去乙醚层。将水溶液pH值调到大于10,用乙醚萃取3次,每次250ml,然后干燥乙醚。

如果需要,我可以在空闲时间帮你翻译。我的qq:617504626

多给点分哈