reaction for N-substituted pyrrole synthesis using 2,5-dimethoxytetrahydrofuran with variously substituted aromatic amines has been developed (up to 89% yield). This interesting neat strategy is free from additives including co-catalysts, ligands, and acids. Relatively low cost, environmentally benign, and handy Mn(NO3)2·4H2O is employed as the catalyst undermicrowave conditions with a very short reaction
Facial Preparation of Sulfonic Acid-Functionalized Magnetite-Coated Maghemite as a Magnetically Separable Catalyst for Pyrrole Synthesis
作者:Hajar Mahmoudi、Abbas Ali Jafari
DOI:10.1002/cctc.201300623
日期:2013.12
The synthesis, characterization, and catalytic performance of the new sulfonic acid supported on the magnetic nanoparticles with maghemite coating were reported. The morphology, particle size, structure, magnetic properties, and the formation of nanoparticles with narrow size distribution were investigated. Chemical analysis was performed by using TEM, wide‐angle XRD, FTIR spectroscopy, and X‐ray fluorescence
Tungstophosphoric acid supported on silica gel (H3PW12O40/SiO2) as an eco-friendly, reusable and heterogeneous catalyst for the synthesis of pyrroles in solution or under solvent-free microwave irradiation
作者:A. A. Jafari、H. Mahmoudi、B. F. Mirjalili
DOI:10.1007/bf03245915
日期:2011.9
Heteropoly acid supported on silica gel (H3PW12O40/SiO2) is easily used as a heterogonous, reusable and efficient catalyst for the synthesis of N-substituted, 2- and 3-unsubstituted pyrroles in solution or under solvent-free microwaveirradiation. The catalyst can be easily recovered and reused for several times without loss of activity.
负载在硅胶上的杂多酸(H 3 PW 12 O 40 / SiO 2)易于用作在溶液中或在无溶剂条件下合成N-取代的2-和3-未取代的吡咯的,可重复使用的高效催化剂微波照射。该催化剂可以容易地回收并重复使用几次而不会损失活性。
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