反应详情

To a flask charged with 5-bromo-4-propyl-2-benzofuran-1(3H)-one (130 mg, 0.51 mmol) and a stir bar was added allyl tri-n-butyltin (0.24 mL, 0.76 mmol), PdCl2(dppf)-DCM complex (42 mg, 0.051 mmol), lithium chloride (65 mg, 1.5 mmol), and tolene (5 mL). The mixture was sealed with a condensor, purged with nitrogen three times, and heated to reflux for 5 hours. The crude reaction was diluted with EtOAc, adsorbed onto silica gel, and purified by MPLC. Removal of solvent gave rise to 5-allyl-4-propyl-2-benzofuran-1(3H)-one (60 mg, 44% yield) as a light yellow oil.

1. customThe mixture was sealed with a condensor
2. custompurged with nitrogen three times
3. temperatureheated
4. temperatureto reflux for 5 hours
5. customThe crude reaction
6. custompurified by MPLC
7. customRemoval of solvent