Sodium Carbonate → HCID 12056715, compound

Participants

Reaction Steps

A stirred mixture of 4-(trifluoromethyl)benzene boronic acid (430 mg, 2.3 mmol), the title compound of Step A (500 mg, 1.7 mmol), dichlorobis(triphenylphosphine)palladium(II) (120 mg, 0.17 mmol) and sodium carbonate (550 mg, 5.2 mmol) in a mixture of 6 mL of water and 2 mL of tetrahydrofuran was heated at reflux for 1.5 h. The reaction mixture was then partitioned between diethyl ether and water. The organic layer was separated, washed with brine, dried over magnesium sulfate and concentrated under reduced pressure. Flash chromatography on silica gel (20 to 25% ethyl acetate in hexane) followed by trituration with 10% diethyl ether in hexane afforded 350 mg of the title compound of Step B, a compound of this invention, as a yellow-tinted solid melting at 112-113° C. 1H NMR (CDCl3): δ8.55 (m, 3H), 7.70 (d, 2H), 7.60 (s, 1H), 7.55-7.40 (m, 3H), 4.25 (s, 2H), 2.30 (s, 3H).

Provenance & Evidence