Ethyl Acrylate → Ethyl (3-hydroxy-6-methylpyridin-2-yl)propenoate

Temperatur

120 °C

To a solution of 3-hydroxy-2-iodo-6-methylpyridine (1.175 g, 5.0 mmol) in DMF (9.5 ml) and water (0.5 ml) were added potassium acetate (1.23 g, 12.5 mmol), triphenylphosphine (105 mg, 0.40 mmol), palladium chloride (36 mg, 0.20 mmol) and ethyl acrylate (1.63 ml, 1.50 g, 15.0 mmol). The mixture was placed under nitrogen and heated at 120° C. for 1.5 h. The mixture was cooled, filtered from deposited palladium black, and added to water (100 ml). The product was extracted into ethyl acetate (3×30 ml). The combined extracts were washed with water (2×25 ml) and with brine (25 ml), then dried over sodium sulphate and evaporated. This left a tan solid, the product (951 mg, 91%). mp 192°-195° C. (dec)

1. temperatureThe mixture was cooled
2. filtrationfiltered
3. additionadded to water (100 ml)
4. extractionThe product was extracted into ethyl acetate (3×30 ml)
5. washThe combined extracts were washed with water (2×25 ml) and with brine (25 ml)
6. dry with materialdried over sodium sulphate
7. customevaporated
8. waitThis left a tan solid

ORD-Eintrag

ord-daea2679130c4e96a69efc91647c4537

Quelldatensatz

uspto-grants-1998_03

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US05726315