4-Quinolinecarboxylic acid → HCID 71655554, compound

Participants

Reaction Steps

Commercially available quinoline-4-carboxylic acid (0.078 g, 0.449 mmol) was dissolved in 7 ml of DMF, N-ethyl-N-isopropylpropan-2-amine (0.242 ml, 1.347 mmol), HOBT (0.069 g, 0.449 mmol) and TBTU (0.144 g, 0.449 mmol) were added. After 15 min a solution of (S)-1-(2-aminoacetyl)pyrrolidine-2-carbonitrile 2,2,2-trifluoroacetate (0.120 g, 0.449 mmol) (prepared as described under A.1 of the experimental part) in DMF was added. The mixture was stirred overnight at room temperature. The volatiles were evaporated, the residue was dissolved in ethyl acetate and extracted with 1 N citric acid, saturated sodium bicarbonate and brine. The solution was dried over sodium sulfate, filtrated and evaporated. It was purified using column chromatography (1-5 hexane-ethyl acetate).

Provenance & Evidence