反应详情

A mixture of 1-(4-cyanobenzyl)-5-hydroxymethylimidazole (10.8 g, 50.70 mmol; Example 1, Step D) and thionyl chloride (70 mL, 960 mmol) was stirred at room temp. overnight under a calcium chloride drying tube. The resultant mixture was concentrated under vacuum, and residual thionyl chloride was removed by co-evaporation with toluene. The residue was recrystallized from boiling methanol. After cooling to room temp., the white solid precipitated was obtained by filtration, and residual solvent was removed under vacuum overnight.

1. concentrationThe resultant mixture was concentrated under vacuum, and residual thionyl chloride
2. customwas removed by co-evaporation with toluene
3. customThe residue was recrystallized
4. temperatureAfter cooling to room temp.
5. customthe white solid precipitated
6. customwas obtained by filtration, and residual solvent
7. customwas removed under vacuum overnight