H 3 PW 12 O 40锚固在石墨烯接枝的二氧化硅包覆的MnFe 2 O 4上,作为曼尼希反应的磁性催化剂
摘要:
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。
One-pot, three-component Mannich-type reaction catalyzed by functionalized ionic liquid
作者:Dong Fang、Kai Gong、Dai-zhen Zhang、Zu-liang Liu
DOI:10.1007/s00706-009-0182-y
日期:2009.11
AbstractA three-componentMannich-typereaction of aromatic aldehydes, aromatic amines, and ketones was catalyzed by a novel functionalized ionic liquid, 3-(N,N-dimethyldodecylammonium)propanesulfonic acid hydrogen sulfate ([DDPA][HSO4]) at room temperature to give various β-amino carbonyl compounds in good yields. The catalyst could be reused at least six times without noticeably reducing catalytic
Synthesis of β-amino carbonyl compounds via a Zn(OTf)2-catalyzed cascade reaction of anilines with aromatic aldehydes and carbonyl compounds
作者:Yun-Yun Yang、Wang-Ge Shou、Yan-Guang Wang
DOI:10.1016/j.tet.2006.08.063
日期:2006.10
Zn(OTf)2-catalyzed cascade reaction of anilines with aromatic aldehydes and carbonylcompounds was described. This one-pot three-component reaction afforded the corresponding β-amino carbonylcompounds, β-amino esters, and β-amino ketones in good to excellent yields. The reaction was also applied for the liquid-phase synthesis of β-amino carbonylcompound library using PEG as a support.
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.
Lin, Yi; Junhua, Zou; Huangshu, Lei, Organic Preparations and Procedures International, 1991, vol. 23, # 5, p. 673 - 676
HClO4–SiO2 catalyzed stereoselective synthesis of β-amino ketones via a direct Mannich-type reaction
作者:Mohammad A. Bigdeli、Firouzeh Nemati、Gholam Hossien Mahdavinia
DOI:10.1016/j.tetlet.2007.07.088
日期:2007.9
The HClO4-SiO2 catalyzed three-component, one-pot Mannich reaction of ketones, aromatic aldehydes and aromatic amines is carried out in ethanol to afford the corresponding P-amino ketones in good yields and high stereoselectivities in favor of the anti-isomer. Three new compounds are reported. (c) 2007 Elsevier Ltd. All rights reserved.