1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide → HCID 68514379, compound

Participants

Reaction Steps

5-Propyl-1-{4-[(propylamino)carbonyl]phenyl}-1H-1,2,3-triazole-4-carboxylic acid (498 mg, 1.57 mmol) obtained in Example 55b), HOBt (215 mg, 1.57 mmol, 1.0 eq.) and cyclopropylamine (0.146 ml, 2.05 mmol, 1.3 eq.) were dissolved in acetonitrile (4 ml) and DMF (4 ml), WSC (370 mg, 1.89 mmol, 1.2 eq.) was added and the mixture was stirred at room temperature for 2.5 hr. The reaction mixture was concentrated, dissolved in ethyl acetate (50 ml), and washed with 5% aqueous sodium hydrogen carbonate solution, 10% aqueous ammonium chloride solution and saturated brine. The aqueous layers were each extracted with ethyl acetate-hexane (2:1, 20 ml). The organic layers were combined, dried over anhydrous sodium sulfate, and concentrated, and diethyl ether was added. The precipitate was collected by filtration, washed with diethyl ether and dried to give the title compound as a white powder (542 mg, 1.52 mmol, 97.1%).

Provenance & Evidence