Diethyl Malonate → Diethyl (3-fluoro-2-pyridyl)malonate

関与物質

反応条件

反応手順

A mixture of 3.95 g of 2,3-difluoropyridine, 13.2 g of diethyl malonate, 38 ml of dimethyl sulfoxide and 26.85 g of cesium carbonate was stirred for 3 hours at 100° C. under a nitrogen atmosphere. The reaction mixture was allowed to cool to room temperature, then, to this was added ice water and extracted with ethyl acetate. The organic layer was washed with saturated brine twice, and dried over anhydrous magnesium sulfate, then, concentrated under reduced pressure. 12.18 g of the resultant residue was subjected to silica gel column chromatography, to obtain 6.38 g of diethyl (3-fluoro-2-pyridyl)malonate.

情報源と証拠