反应详情

Sulphuryl chloride (286 g.) was added dropwise to a solution of ethyl 3-oxopentanoate (300 g.) in chloroform (250 ml.) at 10°-15°. Following addition the mixture was stirred overnight at room temperature, heated under reflux for 0.5 hour and cooled. After washing with water, sodium bicarbonate and water, the solution was dried (sodium sulphate), concentrated, and fractionated to yield ethyl 2-chloro-3-oxopentanoate, b.p. 94°-96°/14 mm.

1. additionaddition the mixture
2. temperatureheated
3. temperatureunder reflux for 0.5 hour
4. temperaturecooled
5. washAfter washing with water, sodium bicarbonate and water
6. dry with materialthe solution was dried (sodium sulphate)
7. concentrationconcentrated