反应详情

温度

48 °C

2-(4-Hydroxyphenoxy) propanoic acid (1.80 g, 0.00988 mole) was dissolved in 15 ml of dimethyl sulfoxide. A solution of sodium hydroxide (0.8 g, 0.02 mole in 1 ml of water) was added and the reaction mixture was heated under nitrogen to 48° C. over a 27 minute period. 2-Bromo-3-fluoro-5-(trifluoromethyl)pyridine (2.40 g, 0.00984 mole) dissolved in 5 ml of dimethyl sulfoxide was added and the reaction mixture was heated at 75°-78° C. for 40 minutes. The mixture was poured into 150 ml of cold water and acidified with aqueous HCl. A gum came down. Upon work-up and purification, a fraction (0.45 g) was obtained which had an elemental analysis of, in percent by weight:

1. additionwas added
2. temperaturethe reaction mixture was heated at 75°-78° C. for 40 minutes
3. customUpon work-up and purification
4. customa fraction (0.45 g) was obtained which