Highly Efficient One-Pot Three-Component Mannich Reaction in Water Catalyzed by Heteropoly Acids
作者:Najmodin Azizi、Lalleh Torkiyan、Mohammad R. Saidi
DOI:10.1021/ol060498v
日期:2006.5.1
[reaction: see text] Heteropoly acidsefficiently catalyzed the one-pot, three-component Mannichreaction of ketones with aromatic aldehydes and different amines in water at ambient temperature and afforded the corresponding beta-amino carbonyl compounds in good to excellent yields and with moderate diastereoselectivity. This method provides a novel and improved modification of the three-component
An effective polyelectrolyte Bronsted acid (polyacrylic acid) catalyzed three-componentMannichreactions accelerated by emulsion has been developed. The results demonstrated that the polyacrylic acid provided the best catalytic activity in...
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。
Direct-type catalytic three-component Mannich reaction in aqueous media
Bismuth triflate catalyzed direct-type Mannich reaction of cyclohexanone, aromatic aldehyde, and aromatic amine proceeded smoothly in water to afford the corresponding beta-amino ketone with very good yield and moderate to good anti selectivity. (c) 2006 Elsevier Ltd. All rights reserved.