tert-Butyl piperazine-1-carboxylate → tert-Butyl 4-((3-bromofuran-2-yl)methyl)piperazine-1-carboxylate

関与物質

反応手順

To a solution of 3-bromofuran-2-carbaldehyde (500 mg, 2.85 mmol) and tert-butyl piperazine-1-carboxylate (1.1 g, 5.71 mmol) in CH2Cl2 (10 mL) was added sodium triacetoxyborohydride (1.2 g, 5.71 mmol). The mixture was stirred at room temperature for 12 hours. The reaction mixture was diluted with EtOAc (100 mL). The organic phase was washed with aqueous NaHCO3 and brine then dried (MgSO4), filtered and concentrated to dryness. The residue was purified by column chromatography (silica, 0-10% MeOH in CH2Cl2) to afford the sub-title compound (910 mg, 92%).

情報源と証拠