scholarly journals Synthesis of pyrimido[1,6-a]quinoxalines via intermolecular trapping of thermally generated acyl(quinoxalin-2-yl)ketenes by Schiff bases

2018 ◽  
Vol 14 ◽  
pp. 1734-1742 ◽  
Author(s):  
Svetlana O Kasatkina ◽  
Ekaterina E Stepanova ◽  
Maksim V Dmitriev ◽  
Ivan G Mokrushin ◽  
Andrey N Maslivets
Keyword(s):  
Schiff Bases ◽  
Solvent Free ◽  
Solvent Free Conditions ◽  
Quinoxaline Derivatives ◽  
Thermal Decarbonylation

Acyl(quinoxalin-2-yl)ketenes generated by thermal decarbonylation of 3-acylpyrrolo[1,2-a]quinoxaline-1,2,4(5H)-triones react regioselectively with Schiff bases under solvent-free conditions to form pyrimido[1,6-a]quinoxaline derivatives in good yields.

scholarly journals Solventless Synthesis of Imines Derived from Diphenyldisulphide Diamine or p-Vanillin

2009 ◽  
Vol 6 (s1) ◽  
pp. S195-S200 ◽  
Author(s):  
Dany Jean -Noël uppiah ◽  
Minu Gupta Bhowon ◽  
sabina Jhaumeer Laulloo
Keyword(s):  
Schiff Bases ◽  
Elemental Analysis ◽  
Environmental Contamination ◽  
Classical Method ◽  
Solvent Free ◽  
High Yield ◽  
Melting Points ◽  
Solvent Free Conditions ◽  
Solventless Synthesis

A solventless synthesis can reduce environmental contamination and can be more convenient than solvent-based synthesis. A series of Schiff bases were synthesized in high yield > 90% under solvent free conditions with negligible waste. All the synthesized products were characterized on the basis of spectral, elemental analysis and melting points and were compared with the data of the prouducts obtained from classical method

Silica-Gel–Catalyzed Efficient Synthesis of Quinoxaline Derivatives Under Solvent-Free Conditions

2011 ◽  
Vol 41 (3) ◽  
pp. 417-425 ◽  
Author(s):  
Ganesh Chandra Nandi ◽  
Subhasis Samai ◽  
Ram Kumar ◽  
M. S. Singh
Keyword(s):  
Silica Gel ◽  
Solvent Free ◽  
Efficient Synthesis ◽  
Solvent Free Conditions ◽  
Quinoxaline Derivatives

Eco-friendly synthesis of quinoxaline derivatives by grinding under solvent-free conditions

2011 ◽  
Vol 48 (2) ◽  
pp. 403-406 ◽  
Author(s):  
Jun Li ◽  
Dan-Na Jiang ◽  
Jiu-Xi Chen ◽  
Miao-Chang Liu ◽  
Jin-Chang Ding ◽  
...  
Keyword(s):  
Solvent Free ◽  
Solvent Free Conditions ◽  
Quinoxaline Derivatives

ChemInform Abstract: Silica-Gel-Catalyzed Efficient Synthesis of Quinoxaline Derivatives under Solvent-Free Conditions.

ChemInform ◽  
2011 ◽  
Vol 42 (30) ◽  
pp. no-no
Author(s):  
Ganesh Chandra Nandi ◽  
Subhasis Samai ◽  
Ram Kumar ◽  
M. S. Singh
Keyword(s):  
Silica Gel ◽  
Solvent Free ◽  
Efficient Synthesis ◽  
Solvent Free Conditions ◽  
Quinoxaline Derivatives

scholarly journals Synthesis of quinoxaline derivatives catalyzed by Brønsted acidic ionic liquid under solvent-free conditions

2020 ◽  
Author(s):  
Rana Chatterjee ◽  
Sachinta Mahato ◽  
Anindita Mukherjee ◽  
Grigory V. Zyryanov ◽  
Adinath Majee
Keyword(s):  
Ionic Liquid ◽  
Solvent Free ◽  
Acidic Ionic Liquid ◽  
Brønsted Acidic Ionic Liquid ◽  
Solvent Free Conditions ◽  
Quinoxaline Derivatives
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