Diisopropylethylamine → HCID 70664890, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of methyl 3-chloro-2-(4-fluorophenyl)quinoxaline-6-carboxylate (200.0 mg, 0.63 mmol) in DMSO (1.5 mL) was added tetrahydro-2H-pyran-4-amine (127.8 mg, 1.26 mmol), DIEA (163.3 mg, 1.27 mmol) under nitrogen atmosphere. After stirring overnight at 100° C., the reaction mixture was dissolved in dichloromethane (30 mL), washed with water (3×10 mL), dried over anhydrous magnesium sulfate and concentrated under reduced pressure to afford a residue, which was purified by a silica gel column with 0.01%-0.1% ethyl acetate in petroleum ether to afford methyl 2-(4-fluorophenyl)-3-(tetrahydro-2H-pyran-4-ylamino)quinoxaline-6-carboxylate as a light yellow solid (180.0 mg, 75%).

Provenance & Evidence