反应详情

温度

100 °C

To 100 ml of N,N-dimethylformamide, 17.1 g (100 mmol) of 2-phenylacetoamidine hydrochloric acid salt, synthesized in accordance with a method described in “Tetrahedron”, page 887 (1984), 18.6 g (100 mmol) of ethyl 2-acetyl-3-ethoxyacrylate and 9.0 g (110 mmol) of sodium acetate were suspended, followed by stirring at 100° C. for 3 hours. The reaction liquid was cooled and then poured into ice water, and extracting with diethyl ether. The organic layer was washed with water and a saturated saline solution in this order, followed by drying over anhydrous magnesium sulfate and concentrating under reduced pressure to obtain 22.8 g (yield: 89%) of ethyl 2-benzyl-4-methylpyrimidine-5-carboxylate.

1. customThe reaction liquid
2. temperaturewas cooled
3. extractionextracting with diethyl ether
4. washThe organic layer was washed with water
5. dry with materialby drying over anhydrous magnesium sulfate
6. concentrationconcentrating under reduced pressure