2-Chloroethyl isocyanate → HCID 57422492, compound

Participants

Reaction Steps

1-((3,5-dimethylisoxazol-4-yl)methyl)-1H-pyrazol-4-amine (419 mg, 2.18 mmol) and 2-chloroethyl isocyanate (230 mg, 2.18 mmol) in acetonitrile (5 mL) were heated at 65° C. for 16 hours. The reaction was cooled to room temperature and concentrated on the rotovap. The residue was purified by silica column chromotography (100% to 90% dichloromethane in methanol: 30 minute gradient), dried and triturated with ethyl acetate/hexanes (1/9) to afford (1-(2-chloroethyl)-3-(1-((3,5-dimethylisoxazol-4-yl)methyl)1H-pyrazol-4-yl)urea (258 mg, 40%) as a yellow solid. MS M+H calculated 298.10; found 298.1.

Provenance & Evidence