Synthesis of Pyrrole Derivatives Promoted by Fe(ClO4)3/SiO2 as an Environmentally Friendly Catalyst
作者:K. Arabpourian、F. K. Behbahani
DOI:10.1134/s1070428019050166
日期:2019.5
N-Substituted pyrroles have been prepared in high isolated yields (702-99%) by the reaction of hexane-2,5-dione with amines or diamines in the presence of Fe(ClO4)(3)/SiO2 at ambient temperature under solvent-free conditions. The experimental procedure involves simple operations, and the products are readily separated by short column chromatography. The same reaction of hexane-2,5-dione with amines containing electron-acceptor substituents, such as 4-nitroaniline, resulted in fair yields of pyrrole derivatives.
Synthesis of Fe<sub>3</sub>O<sub>4</sub>@<i>L</i>-proline@SO<sub>3</sub>H as a novel and reusable acidic magnetic nanocatalyst and its application for the synthesis of <i>N</i>-substituted pyrroles at room temperature under ultrasonic irradiation and without solvent
作者:Fatemeh Shokri、Farahnaz K. Behbahani
DOI:10.1080/24701556.2021.1963278
日期:2022.8.3
Nanomagnetically Modified Sulfuric Acid (γ-Fe2O3@SiO2-OSO3H): An Efficient, Fast, and Reusable Catalyst for Greener Paal–Knorr Pyrrole Synthesis
作者:Samaneh Cheraghi、Dariush Saberi、Akbar Heydari
DOI:10.1007/s10562-014-1197-5
日期:2014.7
Paal-Knorr pyrrole synthesis was performed in the presence of superparamagnetic nanoparticles of modified sulfuric acid (gamma-Fe2O3@SiO2-OSO3H) as an efficient and magnetically separable catalyst. Recovery of the catalyst was simple using a magnet, allowing its reuse without significant loss of its catalytic activity (over five cycles).
609. The chemistry of carcinogenic nitrogen-compounds. Part III. Polysubstituted pyrroles and indoles as potential cocarcinogens
作者:Ng.Ph. Buu-Hoï
DOI:10.1039/jr9490002882
日期:——
Verfahren zur Photopolymerisation von Vinylverbindungen und photopolymerisierbares Material (I)