Facile one‐pot synthesis of a series of 7‐aryl‐8H‐benzo[h]indeno[1,2‐b]quinoline‐8‐one derivatives catalyzed by cellulose‐based magnetic nanocomposite

Abstract

A sulfonated magnetic cellulose-based nanocomposite was applied as an efficient, inexpensive and green catalyst for the one-pot three-component synthesis of 7-aryl-8H-benzo[h]indeno[1,2-b]quinoline-8-ones starting from 1,3-indanedione, aromatic aldehydes and 1-naphthylamine under solvent-free conditions in high yields (79-98%) within short reaction times (2-5 min). The nanobiostructure catalyst can be easily separated from the reaction mixture by using an external magnet and reused several times.

One‐Pot Multicomponent Synthesis of Pyrrolo[1,2‐a]pyrazines in Water Catalyzed by Fe3O4@SiO2‐OSO3H

“…Because separation of heterogeneous catalysts of the reaction mixture is easier than homogeneous catalysts. Therefore, use of magnetic nanoparticles (MNPs) like Fe 3 O 4 nanocatalysts and magnetically coated nanoparticles which have advantages such as simple separation using an external magnet, low toxicity, highly active surface, ease of recovery and remarkable stability have been increased. Among different coatings, silica is an inexpensive, non‐toxic, high surface area and stability .…”

Pd(0)‐guanidine@MCM‐41: a very effective catalyst for rapid production of bis (pyrazolyl)methanes

“…[35][36][37] Because of the increasing concern of the harmful effects of organic solvents on the environment and human body, organic reactions that are operated with green solvents or without conventional organic solvents have aroused the attention of organic and medicinal chemists. [38][39][40][41] In the past decade, interest in solvent-free MCRs has expanded and it now encompasses wide areas of the chemical enterprise. [20,21,[42][43][44] For reasons of economy and pollution prevention, solvent-free methods are used to modernize classical procedures by making them cleaner, safer and easier to perform.…”

“…Over the last few decades, with increasing environmental concerns, the design of new MCRs with ecofriendly, green procedures have become increasingly useful tools, especially in the fields of drug discovery, organic synthesis and material science . Because of the increasing concern of the harmful effects of organic solvents on the environment and human body, organic reactions that are operated with green solvents or without conventional organic solvents have aroused the attention of organic and medicinal chemists . In the past decade, interest in solvent‐free MCRs has expanded and it now encompasses wide areas of the chemical enterprise .…”

Green synthesis of silver nanoparticles using Eucalyptus comadulensis leaves extract and its immobilization on magnetic nanocomposite (GO‐Fe3O4/PAA/Ag) as a recoverable catalyst for degradation of organic dyes in water

“…Separation of nanoparticles from the reaction medium using simple methods such as filtration and centrifugation is difficult . To overcome these difficulties, different solid supports such as TiO 2 , graphene, mesoporous materials, and Fe 3 O 4 were applied for the immobilization of metal nanoparticles and the construction of the heterogeneous nanocatalyst . Graphene oxide (GO) has been identified as a new group of interesting catalysts because of their unique properties such as good stability, large surface area, high mechanical strength, and good adsorption capacity.…”