Tert-Butylamine → N-tert-butyl-2-(5-fluorobenzofuran-2-yl)-3-[methyl(propan-2-yl)amino]quinoxaline-6-carboxamide

Participants

Reaction Steps

To a solution of 2-(5-fluorobenzofuran-2-yl)-3-[methyl(propan-2-yl)amino]quinoxaline-6-carboxylic acid (486 mg, 1.28 mmol) in dichloromethane (30 ml) was added triethylamine (366 mg, 3.62 mmol), 2-methylpropan-2-amine (212 mg, 2.90 mmol) and T3P (610 mg, 1.92 mmol), and the resulting mixture was stirred for 1 h at room temperature. The reaction mixture was then quenched with water (120 ml), extracted with dichloromethane (4×60 ml), and the organic layers combined and concentrated in vacuo to afford N-tert-butyl-2-(5-fluorobenzofuran-2-yl)-3-[methyl(propan-2-yl)amino]quinoxaline-6-carboxamide as a yellow solid (600 mg, crude), which was used to the next step without further purification.

Provenance & Evidence