反应详情

To a solution of 5.75 g of thionylchloride in 80 ml of methylene chloride is added 8.4 g of 1-(α-ethoxycarbonyl-p-cyanobenzyl)-1H-imidazole-5-propanol as a solid in portions. When addition is complete, the solution is refluxed for 1.5 h, cooled in ice and filtered to obtain 5-(3-chloropropyl)-1-(α-ethoxycarbonyl-p-cyanobenzyl)-1H-imidazole hydrochloride. The salt is partitioned between methylene chloride and saturated sodium bicarbonate. The organic extracts are washed with water, dried over sodium sulfate and evaporated to yield the free base.

1. additionWhen addition
2. temperaturethe solution is refluxed for 1.5 h
3. temperaturecooled in ice
4. filtrationfiltered