Polystyrene-supported GaCl3 as a highly efficient and recyclable heterogeneous Lewis acid catalyst for one-pot synthesis of N-substituted pyrroles
作者:Ali Rahmatpour
DOI:10.1016/j.jorganchem.2012.03.025
日期:2012.8
of N-substituted pyrroles from one-pot condensation reaction of 2,5-hexanedione with amines and diamines in the presence of polystyrene-supported gallium trichloride (PS/GaCl3) as a highlyactive and reusableheterogeneous Lewis acid catalyst is presented. This new protocol has the advantages of easy availability, stability, reusability and eco-friendly of the catalyst, high to excellent yields, simple
Cellulose sulfuric acid as a biodegradable and recoverable solid acid catalyst for one pot synthesis of substituted pyrroles under solvent-free conditions at room temperature
作者:Ali Rahmatpour
DOI:10.1016/j.reactfunctpolym.2010.11.001
日期:2011.1
A new and efficient method for the preparation of N-substitutedpyrroles from one-pot condensation reaction of 2,5-hexandione with amines and diamines in the presence of cellulose sulfuric acid (CSA) as a bio-supported catalyst at roomtemperatureundersolvent-freeconditions is presented. This new protocol has the advantages of easy availability, stability, reusability and eco-friendly of the catalyst
ZrOCl2·8H2O as a highly efficient, eco-friendly and recyclable Lewis acid catalyst for one-pot synthesis of N-substituted pyrroles under solvent-free conditions at room temperature
作者:Ali Rahmatpour
DOI:10.1002/aoc.1806
日期:2011.8
A new and efficient method for the synthesis of a variety of N‐substituted pyrroles from condensation reactions of 2,5‐hexanedione with amines or diamines using ZrOCl2·8H2O as a water‐tolerant Lewisacidcatalyst at roomtemperature is described.The use of nontoxic, inexpensive, easily available and reusable catalystunder solvent‐free conditions make this protocol practical, environmentally friendly
Xanthan sulfuric acid as an efficient, green, biodegradable, and recyclable solid acid catalyst for one-pot synthesis of N-substituted pyrroles under solvent-free conditions at room temperature
作者:Ali Rahmatpour
DOI:10.1007/s00706-011-0604-5
日期:2012.3
AbstractA new, green, and efficientmethod for synthesis of a variety of N-substituted pyrroles from condensation reactions of 2,5-hexanedione with amines or diamines using xanthan sulfuric acid as a biosupported and reusable ecofriendly catalyst under solvent-free conditions at roomtemperature is described. The use of a nontoxic, inexpensive, easily available, and reusable biosupported proton source
Crystal Structures of SomeN-substituted 2,5-Dimethylpyrrole Derivatives
作者:Peter G. Jones、Piotr Kuś、Mariusz Łannik、Violetta Kozik
DOI:10.1515/znb-2010-0511
日期:2010.5.1
structures of five di-(2,5-dimethylpyrrole) and one tri-(2,5-dimethylpyrrole) derivatives have been determined. These compounds were synthesized from the respective diamino derivatives and hexane-2,5-dione in direct and simple reactions. The molecular packings are largely based on C-H...π interactions. Graphical Abstract Crystal Structures of SomeN-substituted 2,5-DimethylpyrroleDerivatives
已确定五种二-(2,5-二甲基吡咯) 和一种三-(2,5-二甲基吡咯) 衍生物的晶体和分子结构。这些化合物是由各自的二氨基衍生物和己烷-2,5-二酮在直接和简单的反应中合成的。分子堆积主要基于 CH...π 相互作用。一些 N 取代的 2,5-二甲基吡咯衍生物的图形抽象晶体结构