反应详情

2.8 ml (14.2 mmol) of dicyclohexylamine are added to a solution of 2.7 g (14.2 mmol) of 4-but-2-ynyloxybenzoic acid diluted in 30 ml of dichloromethane. After stirring for 30 min at ambient temperature, the reaction medium is cooled to 0° C. and 1.0 ml (14.2 mmol) of thionyl chloride is slowly added. The mixture is then stirred at ambient temperature for 1 h 30 min, then the dicyclohexylamine salts are precipitated by adding 50 ml of diethyl ether. After filtration of the reaction medium, the filtrate is concentrated under vacuum. 2.9 g (100%) of 4-but-2-ynyloxybenzoyl chloride are obtained in the form of a brown solid.

1. temperaturethe reaction medium is cooled to 0° C.
2. stirringThe mixture is then stirred at ambient temperature for 1 h 30 min
3. customthe dicyclohexylamine salts are precipitated
4. additionby adding 50 ml of diethyl ether
5. filtrationAfter filtration of the reaction medium
6. concentrationthe filtrate is concentrated under vacuum