反应详情

5 g of 1-{4-[N-(2-isopropyloxyethyl)-N-chloroacetylamino]benzoyl}-4-[2-(4-chlorophenyl)ethyl]piperazine (Example 3) are dissolved in 50 ml of absolute ethanol, and 1.471 g of sodium thiophenolate are added. The mixture is stirred for one hour at room temperature and a further 1 g of sodium thiophenolate is added. The mixture is stirred for a further 3 hours at RT and then the reaction solution is concentrated by evaporation. The oily residue is extracted with ether and the ethereal phases are washed in succession with water, soda solution and water a concentrated by evaporation, and the light-yellow oil is crystallised from ether and hexane, yielding 1-{4-[N-(2-isopropyloxyethyl)-N-phenylmercaptoacetylamino]benzoyl{-4-[2-(4-chlorophenyl)ethyl]piperazine having a melting point of 47°-49°.

1. stirringThe mixture is stirred for a further 3 hours at RT
2. concentrationthe reaction solution is concentrated by evaporation
3. extractionThe oily residue is extracted with ether
4. washthe ethereal phases are washed in succession with water, soda solution and water
5. concentrationa concentrated by evaporation
6. customthe light-yellow oil is crystallised from ether and hexane