反应详情

A 500 mL round bottom flask is charged with 95% NaH (7.28 g, 288 mmol) and dry DMSO is added (170 mL). To the resulting heterogeneous mixture is added dropwise, 1-[2-methoxy-6-(4-methoxybenzyloxy)phenyl]ethanone (41.2 g, 144 mmol) in dry DMSO (60 mL). The mixture is stirred at room temperature for 10 min, at which time carbon disulfide is added dropwise (8.69 mL, 144 mmol), followed immediately by methyl iodide (18.0 mL, 288 mmol). Heat and gas are evolved during the addition of both reagents prompting careful addition. The homogenous solution is stirred for 18 h at room temperature and then poured slowly into three volumes of water. The solid product is filtered and dried under high vacuum to give the title compound as an orange solid.

1. additionis added (170 mL)
2. additionTo the resulting heterogeneous mixture is added dropwise
3. additionis added dropwise (8.69 mL, 144 mmol)
4. temperatureHeat
5. additiongas are evolved during the addition of both reagents
6. additionaddition
7. filtrationThe solid product is filtered
8. customdried under high vacuum