反应详情

200 mg (60% in oil, 5 mmol) of sodium hydride are added to a solution of 1.86 g (12 mmol) of 4-nitrothiophenol in 10 ml of dimethylformamide. The mixture is stirred at room temperature for 1 hour under nitrogen. 200 g (1.2 mmol) of 4-(2-chloroethyl)-1H-imidazole hydrochloride and tetrabutylammonium iodide (catalytic amount) are then added. The mixture is heated for 1 day at 80° C. and then the solvent is evaporated under reduced pressure. The residue is stirred in diethyl ether and filtered. Dilute hydrochloric acid is added to the filtrate and the excess 4-nitrothiophenol is removed by extracting with diethyl ether. The aqueous solution is basified with potassium carbonate and then the title compound is extracted with chloroform and crystallized from ethanol, M.p.: 167°-168° C.

1. temperatureThe mixture is heated for 1 day at 80° C.
2. customthe solvent is evaporated under reduced pressure
3. stirringThe residue is stirred in diethyl ether
4. filtrationfiltered
5. additionDilute hydrochloric acid is added to the filtrate
6. customthe excess 4-nitrothiophenol is removed
7. extractionby extracting with diethyl ether
8. extractionthe title compound is extracted with chloroform
9. customcrystallized from ethanol, M.p.: 167°-168° C.