2-Chloroethylamine hydrochloride → HCID 21949846, compound

Participants

Reaction Steps

2-Chloroethylamine hydrochloride (192 mg, 1.65 mmol) and the pyrazole from Example 189 (440 mg, 1.50 mmol) were heated as a melt at 160° C. for 18 hours and the residue was partitioned between dichloromethane (25 ml) and 10% aqueous potassium carbonate solution (25 ml). The organic phase was dried over magnesium sulphate, concentrated under reduced pressure and the residue was purified by flash chromatography on silica gel eluting with dichloromethane:methanol:0.88 ammonia (95:5:0 changing to 95:5:0.5, by volume) to provide the title compound (9.2 mg) as a white solid, m.p. 175–177° C.

Provenance & Evidence