Dichloromethane → HCID 89832397, compound

Participants

Reaction Steps

(E)-4,4,4-Trifluorobut-2-enoic acid (17 mg, 0.12 mmol) was dissolved in dichloromethane (1 ml containing one drop of dimethyl formamide), oxalyl chloride was added (11 μl, 0.12 mmol) and the solution was stirred at room temperature for 10 minutes. This solution was added to a solution of N-(5-cyclopropyl-1,2,4-oxadiazol-3-yl)ethane-1,2-diamine (17 mg, 0.1 mmol) and TEA (42 μl, 0.3 mmol) in a mixture of anhydrous dichloromethane (1 ml) and anhydrous DMF (1 ml) and the resulting mixture was stirred at room temperature. After one hour, additional acid chloride (0.12 mmol as prepared above) was added and stirring was continued for one hour. The reaction mixture was diluted with ethyl acetate, washed with saturated sodium bicarbonate solution and brine, dried (magnesium sulfate), concentrated under reduced pressure and the resulting residue was purified by preparative HPLC (Waters XBridge, gradient of water containing 0.1% NH3 and 5% to 100% acetonitrile) to yield 8 mg of a solid (0.019 mmol, 19%).

Provenance & Evidence