反应详情

温度

75 °C

A mixture of diethyl oxalate (27.5 ml, 1 eq.) and methyl methoxyacetate (20 ml, 1 eq.) was added dropwise to a slurry of sodium methoxide (16.4 g, 1.5 eq.) in toluene (350 ml) at 45-50° C. After dropping, the resulting solution was heated to 70-80° C. for 2 hrs and poured into 70 ml of 14% HCl with cooling. The resultant mixture was extracted with EA and the combined organic layers were washed with brine and dried in vacuo to give 16.7 g (40.5%) of a product.

1. temperaturewith cooling
2. extractionThe resultant mixture was extracted with EA
3. washthe combined organic layers were washed with brine
4. customdried in vacuo