Condensation Reactions of Methyl Derivatives of Quinoxaline-1,4-Dioxide with 4,4'-Biphenyl Carboxaldehyde

Abstract

Aims: To synthesis new compounds via condensation reactions between 2-methyl quinoxaline-1,4-dioxide derivatives 4,4'-biphenyl carboxaldehyde.
 Methodology: The Quinoxalines derivatives were prepared from 2-nitroaniline derivatives using the Beirut reaction, and the condensation reaction was carried out at room temperature in absolute methanol. Based on IR and NMR spectroscopic techniques, the structures of all products have been suggested. For their synthesis, suitable mechanisms have been suggested.
 Results: In this work, condensation reactions involving 2-methyl quinoxaline-1,4-dioxide derivatives and 4,4'-biphenyl carboxaldehyde were performed.
 Conclusion: The final compounds, we suppose, have considerable applications in fluorescent and chromophoric activities. In all known solvents, the products were just slightly soluble. Products have been subjected to sulfonation reactions, although with limited success.

Structural, electronic and optical properties of synthesized schiff base compound-validation with a computational method

“…The synthesized compounds in powder form were P1 with R1 and A1; P2 with R1 and A2; and P3 with R1 and A3. The synthesized compounds with IUPAC names are illustrated in figure 1(b) as potential synthesized Schiff base compounds [47,48]. The nitro group has more electron withdrawing ability than the chlorogroup due to this a proton at the α-position of the nitro group that is easily abstracted even by a weak base.…”