Amberlyst-15 catalysed sonochemical synthesis of 2-amino-4,6-disubstituted nicotinonitrile derivatives and their biological evaluation
作者:Chandra Sekhar Challa、Naresh Kumar Katari、Varadacharyulu Nallanchakravarthula、Devanna Nayakanti、Ravikumar Kapavarapu、Manojit Pal
DOI:10.1016/j.molstruc.2021.130541
日期:2021.9
The 2-amino nicotinonitrile framework has been explored first time for the identification of potential inhibitors of SIRT1. Thus a series of targeted 2-amino-4,6-disubstituted nicotinonitrile derivatives were synthesized by employing an ultrasound assisted MCR of ketones, aldehydes, malononitrile and ammonium acetate. The MCR was carried out in the presence of Amberlyst-15 in MeCN under mild conditions
Graphene oxide: a reusable and metal-free carbocatalyst for the one-pot synthesis of 2-amino-3-cyanopyridines in water
作者:Dariush Khalili
DOI:10.1016/j.tetlet.2016.03.020
日期:2016.4
A one-pot synthesis of 2-amino-3-cyanopyridine derivatives has been demonstrated through the multicomponent reaction of aldehydes, ketones, malononitrile, and ammonium acetate using grapheneoxide as a heterogeneous catalyst in water as a green medium. The grapheneoxidecatalyst is very mild, effective, and most of its activity is preserved after being reused for five times.
Highly efficient four-component synthesis of 2-amino-3-cyanopyridines using doped nano-sized copper(I) oxide (Cu<sub>2</sub>O) on melamine–formaldehyde resin
作者:Somayeh Behrouz
DOI:10.3184/174751916x14709292404728
日期:2016.9
A convenient and facile four-component synthesis is described of 2-amino-3-cyanopyridine derivatives from readily available starting materials catalysed by doped nano-sized Cu2O on melamine–formaldehyde resin (nano-Cu2O–MFR). In this method, treatment of different aldehydes, ketones, malononitrile, and ammonium acetate in refluxing H2O/EtOH (1:1) in the presence of doped nano-Cu2O–MFR as a highly efficient
Advanced Guareschi–Thorpe synthesis of pyridines in green buffer, and pH-controlled aqueous medium with ammonium carbonate
作者:Fatemeh Tamaddon、Sajedeh Maddah-Roodan
DOI:10.1039/d3ra04590k
日期:——
Hydroxy-cyanopyridines are easily synthesized via an advanced version of the Guareschi-Thorpe reaction by either three-componentcondensation of alkyl cyanoacetate or cyanoacetamide with 1,3-dicarbonyls and ammonium carbonate in an aqueousmedium. Reactions proceed productively to give the desired products in high yields. Simple mechanistic monitoring showed the role of (NH4)2CO3 as both a nitrogen
A Multicomponent Synthesis of 2-Amino-3-cyanopyridine Derivatives Catalyzed by Heterogeneous and Recyclable Copper Nanoparticles on Charcoal
作者:Reza Khalifeh、Mahdiyeh Ghamari
DOI:10.5935/0103-5053.20150327
日期:——
An efficient and convenient method was developed for synthesis of 2-amino-3-cyanopyridine derivatives via the four-component coupling reaction between ketone, aldehyde, malononitrile, and ammonium acetate in the presence of 2 mol% copper nanoparticles on charcoal (Cu/C) catalyst. A variety of ketones and aldehydes was used to afford the corresponding products in good to excellent yields. The method is applicable to large-scale operation without any problem. The catalyst could be quantitatively recovered from the reaction mixture by simple filtration and reused at least eight times with almost consistent activity.