Dichloromethane → 7-(4-chlorophenyl)-8-(4-methoxyphenyl)-2-((6-(trifluoromethyl)pyridin-3-yl)methyl)-[1,2,4]triazolo[4,3-a]pyridin-3(2H)-one

Participants

Reaction Conditions

Reaction Steps

Into a 5 dram vial at room temperature were placed a magnetic stirbar, 8-bromo-7-(4-chlorophenyl)-2-((2-methyl-6-(trifluoromethyl)pyridin-3-yl)methyl)-[1,2,4]triazolo[4,3-a]pyridin-3(2H)-one (100 mg, 0.20 mmol), 4-methoxyphenylboronic acid (94 mg, 0.60 mmol), Pd(dppf)Cl2.CH2Cl2 (17 mg, 0.02 mmol), powdered anhydrous K3PO4 (133 mg, 0.60 mmol), and dry THF (3 mL). The vial was flushed with argon and then capped tightly. The vial was heated to 90° C. for 6 h while stirring. Analysis by HPLC/MS indicated that starting material was absent and one major new product had formed. The reaction mixture was diluted with EtOAc (20 mL) and water (20 mL). The organic layer was separated, and the aqueous layer was extracted with EtOAc. The combined organic extract was dried (Na2SO4), filtered, and concentrated under reduced pressure. The crude product was purified by automated silica gel chromatography (eluted with EtOAc/hexanes) to obtain the title compound (67 mg) as an oil. HPLC/MS: retention time=4.0 min, [M+H]+=511.

Provenance & Evidence