Synthesis of two distinct pyrrole moiety-containing arenes from nitroanilines using Paal–Knorr followed by an indium-mediated reaction
作者:Byeong Hyo Kim、Seolhee Bae、Ahra Go、Hyunseung Lee、Cheoloh Gong、Byung Min Lee
DOI:10.1039/c5ob02101d
日期:——
Synthesis of arenes substituted with two different substituted-pyrrole moieties was investigated.
芳烃合成中探讨了含有两种不同取代吡咯基团的芳烃。
Synthesis of 2,5-Dimethyl-<i>N</i>-substituted Pyrroles Catalyzed by Diethylenetriaminepentaacetic Acid Supported on Fe<sub>3</sub>O<sub>4</sub> Nanoparticles
addressing this issue, nanoparticles (NPs) have emerged as support materials due to their high surface areas and catalyst loading capacity, improved catalytic activity and dispersability in the reaction medium. Among the various nanoparticle supports, magnetic nanoparticles are efficient and readily available. They have high surface area resulting in high catalyst loading capacity and outstanding stability
Silica sulfuric acid (SSA) as a solid acid heterogeneous catalyst for one-pot synthesis of substituted pyrroles under solvent-free conditions at room temperature
作者:Hojat Veisi
DOI:10.1016/j.tetlet.2010.02.052
日期:2010.4
A variety of N-substituted pyrroles have been synthesized by reacting γ-diketones with amines, diamines or triamine in the presence of silica sulfuricacid (SSA) at room temperature under solvent-free conditions. The experiment protocol features simple operations, and the products are isolated in high to excellent yields (70–98%).
Sulfamic acid heterogenized on functionalized magnetic Fe<sub>3</sub>O<sub>4</sub>nanoparticles with diaminoglyoxime as a green, efficient and reusable catalyst for one-pot synthesis of substituted pyrroles in aqueous phase
作者:Hojat Veisi、Pourya Mohammadi、Javad Gholami
DOI:10.1002/aoc.3228
日期:2014.12
scanning and transmission electron microscopies, vibrating sample magnetometry and elemental analysis. The catalytic activity of MNPs/DAG‐SO3H was probed through one‐pot synthesis of N‐substituted pyrrolesfrom γ‐diketones and primaryamines in aqueous phase at room temperature. The heterogeneous catalyst could be recovered easily by applying an external magnet device and reused many times without significant
Abstract Water was a suitable medium for Paal–Knorrpyrrole cyclocondensation. Hexa-2,5-dione was reacted with several aliphatic and aromatic primary amines, affording N-substituted 2,5-dimethyl pyrrole derivatives in good to excellent yields. An efficient, green method using water either as environmentally friendly solvent or catalyst was presented. GRAPHICAL ABSTRACT