4996-21-8Relevant articles and documents
One-pot, three-component synthesis of polyfunctionalized benzo[h]pyrazolo[3,4-b][1,6]naphthyridine and benzo[g]pyrazolo[3,4-b]quinoline derivatives in the presence of silver nanoparticles (AgNPs)
Khalafy, Jabbar,Majidi Arlan, Fatemeh,Poursattar Marjani, Ahmad,Sarchami, Vahid
, p. 3961 - 3969 (2020/09/01)
An efficient and straightforward protocol for one-pot, three-component reaction of aryl glyoxal monohydrates 1a-h, 5-amino-1-aryl-3-methylpyrazoles 2a,b and 4-hydroxyquinoline-2(1H)-one (3) or 2-hydroxy-1,4-naphthoquinone (4) using silver nanoparticles (AgNPs) as a high performance nanocatalyst in H2O/EtOH at 60°C afforded the corresponding polyfunctionalized benzo[h]pyrazolo[3,4-b][1,6]naphthyridines 5a-h and benzo[g]pyrazolo[3,4-b]quinolines 6a-i, respectively. Excellent catalytic activity, high yields, employing green media and green nanocatalyst, cost-effective and simple procedure are some notable advantages of using AgNPs as a noble metal nanocatalyst in this synthetic strategy. The structures of fused heterocycles were confirmed by their Fourier transform infrared, proton nuclear magnetic resonance (1H-NMR), and 13C-NMR spectral data and microanalysis.
Synthesis of Ethyl 2-Amino-4-benzoyl-5-oxo-5,6-dihydro-4H-pyrano[3,2-c]quinoline-3-carboxylates by a One-pot, Three-Component Reaction in the Presence of TPAB
Poursattar Marjani, Ahmad,Khalafy, Jabbar,Farajollahi, Ayda
, p. 268 - 274 (2018/11/30)
In this research, in order to synthesize a series of ethyl 2-amino-4-benzoyl-5-oxo-5,6-dihydro-4H-pyrano[3,2-c]quinoline-3-carboxylates, a green and an efficient method is proposed through one-pot three-component reaction of substituted arylglyoxals, ethyl cyanoacetate, and 4-hydroxyquinolin-2(1H)-one in the presence of terapropylammonium bromide as a catalyst in good yields. All synthesized new substances were characterized by FTIR, 1H-NMR, and 13C-NMR spectral data and elemental analysis.
Synthesis of 4-Hydroxy-3-(2-arylimidazo[1,2-a]pyridin-3-yl)quinolin-2(1H)-ones in the Presence of DABCO as an Efficient Organocatalyst
Khalafy, Jabbar,Etivand, Nasser,Poursattar Marjani, Ahmad,Khalillou, Neda
, p. 1857 - 1865 (2019/05/21)
The one-pot, three-component, synthesis of a new series of 4-hydroxy-3-(2-arylimidazo[1,2-a]pyridin-3-yl)quinolin-2(1H)-ones in the presence of DABCO as a catalyst has been achieved using aryl glyoxal monohydrates, quinoline-2,4(1H,3H)-dione, and 2-aminopyridine in H2O/EtOH under reflux conditions. The cheapness of organocatalyst, simple workup, operational simplicity, regioselectivity, and high yields are some advantages of this protocol.
