17392-20-0Relevant academic research and scientific papers
Synthesis and luminescent properties of BF2 complexes with N,O-benzazine ligands
Moshkina, Tatyana N.,Nosova, Emiliya V.,Lipunova, Galina N.,Valova, Marina S.,Taniya, Olga S.,Slepukhin, Pavel A.,Charushin, Valery N.
, p. 17 - 24 (2019)
In this study we present a synthesis of six-membered BF2complexes with N–B–O type linkage based on 2-(2-hydroxyphenyl)-4-phenylquinazolines and 2-(2-hydroxyphenyl)quinoxaline. The photophysical properties of compounds were studied by absorption
Cu(OAc)2 Mediated Synthesis of 3-Sulfonyl Chromen-4-ones
Chang, Meng-Yang,Chen, Yu-Hsin,Wang, Heui-Sin
, p. 2361 - 2368 (2018/02/23)
Copper acetate mediated (4 + 2) annulation of sulfonylacetylenes with salicylic acids provides sulfonyl chromen-4-ones in the presence of benzotriazol-1-yloxy tri(dimethylamino)phosphonium hexafluorophosphate (BOP, Castro's reagent) and 4-dimethylaminopyridine (DMAP) in MeNO2 at reflux for 3 h. The uses of various metal complexes and activating reagents are investigated for facile and efficient transformation. A plausible mechanism is proposed.
Copper-Catalyzed Cascade Cycloamination of α-Csp3-H Bond of N-Aryl Ketimines with Azides: Access to Quinoxalines
Chen, Tengfei,Chen, Xun,Wei, Jun,Lin, Dongen,Xie, Ying,Zeng, Wei
, p. 2078 - 2081 (2016/06/01)
A copper-catalyzed cycloamination of α-Csp3-H bond of N-aryl ketimines with sodium azide has been developed. This methodology provides an efficient access to quinoxalines and features mild reaction conditions and readily available ketimines with diverse functional group tolerance.
γ-Maghemite-silica nanocomposite: A green catalyst for diverse aromatic N-heterocycles
Ghosh, Pranab,Mandal, Amitava,Subba, Raju
, p. 146 - 152 (2013/09/02)
γ-Maghemite-silica nanocomposite has been applied as a green catalyst to synthesize variety of aromatic N-heterocycles under solvent free conditions. Characterization was done by modern analytical tools (UV, IR, AAS, DSC, EDXRF, powdered XRD, EPR, Mo?ssbauer and TEM). Mild reaction conditions and recyclability have made the present protocol both environmentally and economically viable.
Synthesis of functionalized benzimidazoles and quinoxalines catalyzed by sodium hexafluorophosphate bound Amberlite resin in aqueous medium
Ghosh, Pranab,Mandal, Amitava
supporting information, p. 6483 - 6488,6 (2012/12/12)
A very simple, eco-friendly, and versatile method for the selective synthesis of 1,2-disubstituted benzimidazoles and quinoxalines in water-methanol (1:1) mixture with the aid of resin bound hexafluorophosphate ion as catalyst is reported. The method is also effective for the incorporation of quinoxaline nucleus at the A ring of pentacyclic triterpenoid, friedelin. A plausible mechanism for the formation of disubstituted benzimidazole has also been suggested.
Synthesis of functionalized benzimidazoles and quinoxalines catalyzed by sodium hexafluorophosphate bound Amberlite resin in aqueous medium
Ghosh, Pranab,Mandal, Amitava
supporting information, p. 6483 - 6488 (2013/01/15)
A very simple, eco-friendly, and versatile method for the selective synthesis of 1,2-disubstituted benzimidazoles and quinoxalines in water-methanol (1:1) mixture with the aid of resin bound hexafluorophosphate ion as catalyst is reported. The method is also effective for the incorporation of quinoxaline nucleus at the A ring of pentacyclic triterpenoid, friedelin. A plausible mechanism for the formation of disubstituted benzimidazole has also been suggested.
Biomimetic synthesis of quinoxalines in water
Madhav,Narayana Murthy,Prakash Reddy,Rama Rao,Nageswar
experimental part, p. 6025 - 6028 (2010/03/01)
Various quinoxalines have been synthesized for the first time in the presence of β-cyclodextrin in water. Biomimetic catalysis of β-cyclodextrin is explained by using 1H NMR spectroscopy.
