HRID1973351
反应详情
EQUATION
反应方程式
REACTANTS
反应物
PRODUCTS
生成物
AUXILIARIES
试剂、催化剂与溶剂
PROCEDURE
实验过程
A mixture of 39 g. of ethyl nicotinate, 33 g. of cyclopropylmethyl ketone and 18 g. of sodium methoxide in 400 ml. of benzene is heated under refluxed for 6 hours. The mixture is diluted with 400 ml. of water and the benzene phase is separated. The aqueous phase is made weakly acidic with dilute hydrochloric acid and extracted with chloroform. The chloroform solution is dried over magnesium sulfate and concentrated under reduced pressure to give a solid. This solid is recrystallized from hexane to give colorless crystals, melting point 69°-70° C.
WORKUP
后处理
- additionA mixture of 39 g
- temperatureunder refluxed for 6 hours
- additionThe mixture is diluted with 400 ml
- customof water and the benzene phase is separated
- extractionextracted with chloroform
- dry with materialThe chloroform solution is dried over magnesium sulfate
- concentrationconcentrated under reduced pressure
- customto give a solid
- customThis solid is recrystallized from hexane
- customto give colorless crystals, melting point 69°-70° C.