A Convergent One-Pot Synthesis of Novel Pyrrole-Pyridopyrimidines Hybrids Using 1-Carboxymethyl-2,3-Dimethylimidazolium Iodide {[cmdmim]I} as a Recyclable Catalyst

Abstract

FT-IR spectra of 1,3-dimethyl-7-(1-methyl-1H-pyrrol-2-yl)-2,4-dioxo-5-(4-nitrophenyl)-1,2,3,4-tetrahydropyrido [2,3-d]pyrimidine-6carbonitrile (4a)……………….……………………….…………………………………………………….……..……….……....…..….page 5pyrimidine-6carbonitrile (4b) ……………………………………….……………………………………………………………………………....….. page 9 13 C NMR spectrum of 1,3-dimethyl-7-(1-methyl-1H-pyrrol-2-yl)-2,4-dioxo-5-(3-nitrophenyl)-1,2,3,4-tetrahydropyrido[2,3-d]pyrimidine-6carbonitrile (4b)……………………………………..………………………………………………………………………………......…page FT-IR spectra of 1,3-dimethyl-7-(1-methyl-1H-pyrrol-2-yl)-2,4-dioxo-5-(2-nitrophenyl)-1,2,3,4-tetrahydropyrido[2,3-d]pyrimidine-6carbonitrile (4c)……………….……………………….…………………………………………………….……..………………......….page 1 H NMR spectrum of 1,3-dimethyl-7-(1-methyl-1H-pyrrol-2-yl)-2,4-dioxo-5-(2-nitrophenyl)-1,2,3,4-tetrahydropyrido[2,3-d]pyrimidine-6carbonitrile (4c)……………….……………………….…………………………………………………….……..……….……….....….page 134d)……………….……………………….…………………………………………………….……..……………....…..….page 1 H NMR spectrum of 1,3-dimethyl-7-(1-methyl-1H-pyrrol-2-yl)-2,4-dioxo-5-(4-bromophenyl)-1,2,3,4-tetrahydropyrido[2,3-d] pyrimidine-6carbonitrile (4d)……………….……………………….…………………………………………………….……..……….……….....….page 13 C NMR spectrum of 1,3-dimethyl-7-(1-methyl-1H-pyrrol-2-yl)-2,4-dioxo-5-(4-bromophenyl)-1,2,3,4-tetrahydropyrido[2,3-d] pyrimidine-6carbonitrile (4d)……………….……………………….…………………………………………………….……..……….……….....….page FT-IR spectra of 1,3-dimethyl-7-(1-methyl-1H-pyrrol-2-yl)-2,4-dioxo-5-(3-bromophenyl)-1,2,3,4-tetrahydropyrido[2,3-d] pyrimidine-6carbonitrile (4e)……………….