Triethylamine → HCID 86734235, compound

Participants

Reaction Steps

37.8 g. of 4-chloro-6-[ethyl(phenylmethyl)amino]-2-methyl-5-nitro-3-pyridinecarboxylic acid ethyl ester (0.1 Mol.), 12 g. of N-methylpiperazine (0.12 Mol.) and 15 g. of triethylamine (0.15 Mol.) are refluxed in 200 ml. of ethanol for three hours. After this time, the solvent is distilled off, the residue is dissolved in 100 ml. of water, made alkaline with potassium hydroxide and extracted three times with 100 ml. portions of ethyl acetate. The extract is dried with calcium chloride, the solvent distilled off and the residual 6-[ethyl(phenylmethyl)amino]-2methyl-4-(4-methyl-1-piperazinyl)-5-nitropyridine-3-carboxylic acid, ethyl ester is used without further purification, yield of crude product: 40 g. (90%).

Provenance & Evidence