Sodium hydride → HCID 59149777, compound

Participants

Reaction Conditions

Reaction Steps

Sodium hydride (60% dispersion in oil, 31 mg, 0.75 mmol) was added to 6-[4-(1H-indol-3-yl)piperidin-1-yl]-3-(trifluoromethyl)[1,2,4]triazolo[4,3-b]pyridazine (obtained as described in Example 507) (150 mg, 0.39 mmol) suspended in DMF (2 mL) at 0° C. under nitrogen. The resulting mixture was stirred at 0° C. for 30 minutes, then 1-(2-chloroethyl)pyrrolidine hydrochloride (72.6 mg, 0.43 mmol) in DMF (1 mL) was added. The resulting mixture was stirred at ambient temperature for 18 hours. The reaction mixture was evaporated to afford crude product. The crude product was purified by preparative HPLC (Waters XBridge Prep C18 OBD column, 5μ silica, 19 mm diameter, 100 mm length), using decreasingly polar mixtures of water (containing 1% ammonia) and MeCN as eluents. Fractions containing the desired compound were evaporated to dryness to give 6-[4-[1-(2-pyrrolidin-1-ylethyl)-1H-indol-3-yl]piperidin-1-yl]-3-(trifluoromethyl)[1,2,4]triazolo[4,3-b]pyridazine (52.0 mg, 27.7%) as a white solid.

Provenance & Evidence