@article{ author = {Nouri, Haleh, Mokhtary, Masoud}, title = {Deep Eutectic Solvent Based on Choline Chloride/Urea as an Efficient Catalytic System for the One-Pot Synthesis of Highly Functionalized 1,4-Dihydropyridines and Polysubstituted 4H-Chromenes}, journal = {Journal of Applied Chemical Research}, year = {2019}, volume = {13}, number = {2}, pages = {97-106}, doi = {} }