Practical one-pot transformation of electron-rich aromatics into aromatic nitriles with molecular iodine and aq NH3 using Vilsmeier–Haack reaction
作者:Sousuke Ushijima、Katsuhiko Moriyama、Hideo Togo
DOI:10.1016/j.tet.2012.04.034
日期:2012.6
N-methylformanilide and O(POCl2)2, followed by the reaction with molecular iodine in aq NH3. Moreover, propiophenone derivatives could be successfully transformed into the corresponding β-chlorocinnamonitriles by the reaction with DMF and POCl3, followed by the reaction with molecular iodine and aq NH3. These reactions are novel metal-free one-pot methods for the preparation of aromatic nitriles from electron-rich
通过用DMF和POCl 3处理,然后与分子碘或1,3-二碘-5,5-二甲基乙内酰脲(DIH)进行反应,可以将各种富含电子的芳族化合物有效地转化为相应的芳族腈,产率中等至中等。 NH 3水溶液。使用N-甲基甲酰苯胺和O(POCl 2)2也可以将某些反应性较低的芳族化合物,如苯甲醚,1,2-二甲氧基苯,1,4-二甲氧基苯和均丁烯转化为相应的芳族腈,并具有中等至中等收率,然后与分子碘在NH 3水溶液中反应。此外,通过与DMF和POCl 3反应,然后与分子碘和NH 3水溶液反应,可以将苯丙酮衍生物成功转化为相应的β-氯肉桂腈。这些反应是新颖的无金属一锅法,可从富含电子的芳族化合物中制备芳族腈,并从苯乙酮中制备β-氯肉桂腈。