One-pot tandem reactions for direct conversion of thiols and disulfides to sulfonic esters, and Paal–Knorr synthesis of pyrrole derivatives catalyzed by TCCA
thiols is accomplished by oxidation with trichloroisocyanuric acid (TCCA), tetra-butylammonium chloride (t-Bu4NCl), and water. The sulfonyl chlorides are then further allowed to react with phenol derivatives in the same reaction vessel. Also, a facile synthesis of N-substituted pyrroles by the reaction of hexane-2,5-dione with primary amines has been accomplished using TCCA as a catalyst under mild condition
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。
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%).
A simple, economical, and green approach to the synthesis of N-substituted pyrrolesusingsodiumdodecylsulfate as surfactant in water is described. The experiment protocol features simple operations, and the products are isolated in high to excellent yields (60–98%).
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