反应详情

温度

150 °C

To a 20 mL microwave tube charged with 4-methyl-5-[(2S)-oxiran-2-yl]-2-benzofuran-1(3H)-one (980 mg, 5.15 mmol) and piperazine (200 mg, 2.3 mmol) was added a stir bar and EtOH (16 mL). The tube was sealed and heated in a microwave apparatus to 150° C. for 90 minutes. The crude product was adsorbed onto silica gel, and purified by flash chromatography (MeOH-DCM 0˜7% gradient). After removal of solvents, 5,5′-{piperazine-1,4-diylbis[(1S)-1-hydroxyethane-2,1-diyl]}bis(4-methyl-2-benzofuran-1(3H)-one) was collected (560 mg).

1. additionwas added a stir bar
2. customThe tube was sealed
3. custompurified by flash chromatography (MeOH-DCM 0˜7% gradient)
4. customAfter removal of solvents, 5,5′-{piperazine-1,4-diylbis[(1S)-1-hydroxyethane-2,1-diyl]}bis(4-methyl-2-benzofuran-1(3H)-one)
5. customwas collected (560 mg)