反应详情

To a mixture of aluminum chloride (59.0 g) and dichloromethane (500 ml), ethyl chloroglyoxylate (45.4 ml) was added dropwise at 0° C. After stirring for 15 minutes, anisole (40.1 ml) was added dropwise at 0° C., and the mixture was stirred for 1.5 hours at room temperature. The reaction mixture was poured onto ice (500 g), and the mixture was stirred for 1 hour at room temperature The dichloromethane layer separated was washed with saturated aqueous sodium chloride, dried (MgSO4), and then concentrated. The residue was subjected to column chromatography on silica gel, and ethyl 4-methoxyphenylglyoxylate (43.6 g, yield 60%) was obtained as an oil from a fraction eluted with ethyl acetate-hexane (1:4, v/v).

1. additionwas added dropwise at 0° C
2. stirringthe mixture was stirred for 1.5 hours at room temperature
3. additionThe reaction mixture was poured onto ice (500 g)
4. customseparated
5. washwas washed with saturated aqueous sodium chloride
6. dry with materialdried (MgSO4)
7. concentrationconcentrated