Dimethyl Sulfoxide → 2-Pyrimidineacetic acid ethyl ester

4.76 g of diethyl (2-pyrimidinyl)malonate and 20 ml of dimethyl sulfoxide were mixed. To the mixture was added 1.40 g of sodium chloride and 0.72 g of water. The mixture was stirred for about 20 minutes at an inner temperature of 140 to 145° C., and for about 20 minutes at an inner temperature of 145 to 148° C. The mixture was allowed to cool to room temperature, then, to the reaction mixture was added 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 to obtain 2.12 g of ethyl (2-pyrimidinyl)acetate.

1. waitfor about 20 minutes at an inner temperature of 145 to 148° C
2. temperatureto cool to room temperature
3. extractionextracted with ethyl acetate
4. washThe organic layer was washed with saturated brine twice
5. dry with materialdried over anhydrous magnesium sulfate
6. concentrationconcentrated under reduced pressure

ORD-Eintrag

ord-5a5fcd2cabd048ffb1528e6dd563e24a

Quelldatensatz

uspto-grants-2013_12

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US08598176B2