Ultrasound-assisted l-proline catalyzed synthesis of novel derivatives of azo-linked dihydropyridines
摘要:
The ultrasound-assisted multicomponent synthesis of novel derivatives of azo-linked dihydropyridines from azo-linked salicylaldehydes, dimedone, and ammonium acetate in the presence of an efficient inexpensive catalyst, l-proline, in high yield and a short reaction time is reported.
Synthesis, experimental, and DFT studies on FT-IR, 1H, and 13C NMR spectra of azo-linked dihydropyridines
作者:L. Zare Fekri、M. Nikpassand
DOI:10.1134/s1070363213120347
日期:2013.12
An efficient one-pot synthesis of dihydropyridines by solid state three-component condensation reactions of aldehydes, dimedone, and ammonium acetate in the presence of HY-Zeolite has been achieved. The conversion took short time to form the products in excellent yields. HY-Zeolite can be recovered and reused. Density Functional Theory (DFT) calculations at the B3LYP level is used to optimize the geometry and calculate FT-IR, H-1, and C-13 NMR spectra of the compounds. We found that the calculated values are in accordance with the experimental data.