反应详情

温度

20 °C

Ethyl 4 chloro-3-oxo-2-n-propoxyiminovalerate (180.0 g.) was added to a stirred solution of 2-mercaptoethanol (71.6 g.) in chloroform (1.8 l.), and then a solution of triethylamine (93.1 g.) in chloroform (200 ml.) was added to the solution over 5 minutes. The solution was stirred at 20° C. for 80 minutes. After washing the resultant mixture with 10% hydrochloric acid twice, a saturated aqueous solution of sodium bicarbonate twice and water in turn, the solution was dried over magnesium sulfate and concentrated in vacuo to give ethyl 4-(2-hydroxyethylthio)-3-oxo-2-n-propoxyiminovalerate (178.7 g.).

1. washAfter washing the resultant mixture with 10% hydrochloric acid twice
2. dry with materiala saturated aqueous solution of sodium bicarbonate twice and water in turn, the solution was dried over magnesium sulfate
3. concentrationconcentrated in vacuo