Green synthesis and characterization of novel α-acyloxycarboxamides through three-component reaction between pyridine carbaldehydes, cyclohexyl isocyanide, and benzoic acid derivatives
作者:Esmail Vessally、Ali Ramazani、Elham Yaaghubi
DOI:10.1007/s00706-011-0536-0
日期:2011.11
AbstractNovel α-acyloxycarboxamides were synthesized and characterized by the Passerini three-component reaction between pyridine carbaldehydes, cyclohexylisocyanide, and benzoic acid derivatives in water. The reactions were carried out in one pot at room temperature with a quantitative yield. The products were obtained without any need for purification. Graphical abstract
2-(Cyclohexylamino)-2-oxo-1-(pyridin-2-yl)ethyl benzoate has been synthesized and characterized by elemental analysis, FT-IR, H-1 NMR and C-13 NMR. Geometrical structures, vibrational frequencies, H-1 and C-13 chemical shift values, molecular electrostatic potential maps and several thermodynamic parameters of title compound in the ground state have been calculated by using the density functional method with 6-31G(d) basis set. The IR spectrum of title compound was interpreted in terms of potential energy distribution (PED) analysis and NMR chemical shifts were also simulated using the GaussView program. Comparison of the theoretical vibrational spectra, H-1 and C-13 NMR chemical shifts of title compound showed a good agreement with the experimental data. (C) 2011 Elsevier B.V. All rights reserved.