反应详情

To 4-(2-hydroxymethyl-benzoimidazol-1-yl)-butyronitrile, 68, (22 g, 102.2 mmol) suspended in CH2Cl2 (100 mL), thionyl chloride (15.81 g, 132.9 mmol) was slowly added with ice-water bath cooling. The ice bath was removed. The solution was stirred at room temperature for 1 hour and then evaporated. The residue was triturated with EtOAc to give a nearly quantitative yield of 4-(2-chloromethyl-benzoimidazol-1-yl)-butyronitrile, 69, as light gray powder.

1. temperaturecooling
2. customThe ice bath was removed
3. customevaporated
4. customThe residue was triturated with EtOAc