Potassium Carbonate → 7-(4-chlorophenyl)-8-(pyridin-4-yl)-2-((5-(trifluoromethyl)pyridin-2-yl)methyl)-[1,2,4]triazolo[4,3-b]pyridazin-3(2H)-one

Participants

Reaction Conditions

Reaction Steps

A solution of 7-(4-chlorophenyl)-8-(pyridin-4-yl)-[1,2,4]triazolo[4,3-b]pyridazin-3(2H)-one (32.4 mg, 0.1 mmol), prepared as described in Example 244, K2CO3 (56 mg, 0.4 mmol), and 2-chloromethyl-5-trifluoromethylpyridine hydrochloride (37 mg, 0.4 mmol) in DMF (0.4 mL) was heated at 65° C. for 2 h. Using a similar procedure as described in Example 247, the crude product was obtained. The crude product was purified by reverse phase HPLC to give the title compound, 7-(4-chlorophenyl)-8-(pyridin-4-yl)-2-((5-(trifluoromethyl)pyridin-2-yl)methyl)-[1,2,4]triazolo[4,3-b]pyridazin-3(2H)-one, (27 mg) as a yellow solid. HPLC RT: 2.78 min; M+H=483; 1H NMR (CDCl3): δ 8.82 (s, 1H), 8.62 (m, 2H), 8.24 (s, 1H), 7.91 (m, 1H), 7.38-7.10 (m, 7H), 5.45 (2H).

Provenance & Evidence