3,5-Bis-trifluoromethylphenylboronic acid → HCID 178508667, compound

Participants

Reaction Conditions

Reaction Steps

A solution of 6-iodo-7H-pyrrolo[3,2-f]quinazoline-1,3-diamine (322 mg, 0.99 mmol) in ethylene glycol dimethyl ether (3.0 mL) and ethanol (3.0 mL)at 25° C. was treated with 3,5-bis(trifluoromethyl)benzene boronic acid (510 mg, 1.98 mmol), a saturated aqueous sodium bicarbonate solution (1.5 mL), and tetrakis(triphenylphosphine)-palladium (0) (115 mg, 0.1 mmol). The resulting mixture was heated to 80° C. for 18 h, cooled, filtered and the isolated solids washed with ethyl acetate. The filtrate was pre-absorbed onto silica gel and purified by flash chromatography (Merck Silica gel 60, 230-400 mesh, 90/10/1 methylene chloride/methanol/ammonium hydroxide) to give 6-(3,5-bis-trifluoromethyl-phenyl)-7H-pyrrolo[3,2-f]quinazoline-1,3-diamine (218 mg, 53.5%) as a yellow solid; EI-HRMS m/e calcd for C18H11F6N5 (M+) 411.0918. Found 411.0921.

Provenance & Evidence