H3PW12O40 anchored on graphene-grafted silica-coated MnFe2O4 as magnetic catalyst for Mannich reaction
作者:M. Kooti、F. Kooshki、E. Nasiri、A. Naghdi Sedeh
DOI:10.1007/s13738-018-1292-4
日期:2018.4
nanocomposite was examined as an efficient and recyclableacidiccatalyst for Mannich reactionundersolvent-freeconditions. The products of this reaction, which are an important class of potentially bioactive compounds, were obtained with good to excellent yields, and the catalyst could be readily recycled without any significant loss of its activity.
在这项研究中,制备了由石墨烯,锰铁氧体和磷钨酸(PTA)组成的三组分纳米复合材料。该复合材料称为石墨烯/ MnFe 2 O 4@PTA是通过将PTA-咪唑鎓离子液体固定在磁性石墨烯片上而合成的。通过FT-IR,SEM,EDX,TEM,ICP,VSM,P-XRD和BET技术研究了制备的纳米复合材料的结构和磁性。研究了合成的磁性纳米复合材料,作为无溶剂条件下曼尼希反应的一种有效且可循环利用的酸性催化剂。该反应的产物是重要的一类潜在的生物活性化合物,以良好或优异的收率获得,并且该催化剂可以容易地再循环而不会显着降低其活性。
Basic Functionalized Ionic Liquid Catalyzed One-pot Mannich-type Reaction: Three Component Synthesis of β-Amino Carbonyl Compounds
作者:Kai Gong、Dong Fang、Hua-Lan Wang、Zu-Liang Liu
DOI:10.1007/s00706-007-0767-2
日期:2007.11
Three-component Mannich-type reaction of cyclohexanone, aromatic aldehydes, and aromatic amines was catalyzed by a basic functionalized ionic liquid, 1-butyl-3-methylimidazolium hydroxide ([bmim] [OH]), at room temperature to give various beta-amino carbonyl compounds in high yields. The ionic liquid, which is environmentally friendly, can be recycled at least 5 times without significant loss of activity.