[Cl:1][C:2]1[N:3]=[C:4]([C:9]([OH:11])=O)[NH:5][C:6]=1[CH2:7][CH3:8].S(Cl)([Cl:14])=O>>[Cl:1][C:2]1[N:3]=[C:4]([C:9]([Cl:14])=[O:11])[NH:5][C:6]=1[CH2:7][CH3:8]4-Chloro-5-ethyl-1H-imidazole-2-carboxylic acid obtained by the method described in Example (1d) (55 mg, 0.29 mmol) was dissolved in thionyl chloride (1.5 mL), and the mixture was stirred at 75° C. for 50 minutes. The reaction solution was concentrated under reduced pressure. The resulting compound was used for the next reaction without purification.
불러오는 중…