l-Cysteine functionalized magnetic nanoparticles (LCMNP): a novel magnetically separable organocatalyst for one-pot synthesis of 2-amino-4H-chromene-3-carbonitriles in water

2015 ◽  
Vol 13 (28) ◽  
pp. 7772-7779 ◽  
Author(s):  
Ali Khalafi-Nezhad ◽  
Maryam Nourisefat ◽  
Farhad Panahi

Magnetic nanoparticles were functionalized with l-cysteine using a new and efficient method and introduced as a novel magnetically separable organocatalyst.

RSC Advances ◽  
2016 ◽  
Vol 6 (64) ◽  
pp. 59343-59351 ◽  
Author(s):  
M. Afradi ◽  
N. Foroughifar ◽  
H. Pasdar ◽  
H. Moghanian

Synthesis, characterization and utilization of the l-proline N-sulfonic acid-functionalized magnetic nanoparticles as a novel magnetically reusable acid catalyst for the synthesis of 3,4-dihydropyrimidine-2-[1H]thione derivatives is reported.


RSC Advances ◽  
2015 ◽  
Vol 5 (3) ◽  
pp. 2223-2230 ◽  
Author(s):  
Ali Khalafi-Nezhad ◽  
Masoumeh Divar ◽  
Farhad Panahi

This paper reports the preparation, characterization and catalytic application of a novel, magnetically separable catalyst consisting of tungstic acid supported on silica coated magnetic nanoparticles.


2020 ◽  
Vol 17 ◽  
Author(s):  
Visarapu Malathi ◽  
Pedavenkatagari Narayana Reddy ◽  
Pannala Padmaja

Abstract:: An efficient method has been developed for the synthesis of new pyrano[3,2-c] and pyrano[3,2-a]carbazole de-rivatives via a three component reaction of 4-hydroxycarbazole or 2-hydroxycarbazole, isocyanides, and dialkylacetylenedi-carboxylates. Noteworthy features of this protocol include mild reaction conditions, catalyst-free, high atom-economy and high yields.


RSC Advances ◽  
2016 ◽  
Vol 6 (47) ◽  
pp. 41551-41560 ◽  
Author(s):  
Mojtaba Bagherzadeh ◽  
Anahita Mortazavi-Manesh

Magnetically separable manganese porphyrin was prepared by immobilizing on functionalized magnetic nanoparticles via the amino propyl linkage and used as an efficient retrievable nanocatalyst in hydrocarbon oxidation reactions.


2009 ◽  
Vol 19 (20) ◽  
pp. 3292 ◽  
Author(s):  
Yunpu Zhai ◽  
Yuqian Dou ◽  
Xiaoxia Liu ◽  
Bo Tu ◽  
Dongyuan Zhao

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