[Cl:1][C:2]1[CH:11]=[C:10]2[C:5]([CH:6]=[CH:7][C:8]3[N:9]2[CH:12]=[C:13]([C:15]([O:17]CC)=[O:16])[N:14]=3)=[CH:4][CH:3]=1.[OH-].[Na+].Cl>C(O)C.O>[Cl:1][C:2]1[CH:11]=[C:10]2[C:5]([CH:6]=[CH:7][C:8]3[N:9]2[CH:12]=[C:13]([C:15]([OH:17])=[O:16])[N:14]=3)=[CH:4][CH:3]=1200 mg of ethyl 8-chloroimidazo-[1,2-a]-quinoline-2-carboxylate in 8 ml of ethanol and 2 ml of water were hydrolyzed with 1 ml of N sodium hydroxide solution. The mixture was acidified with 1.1 ml of N HCl as in Example 36 to obtain colorless needles of 8-chloroimidazo-[1,2-a]-quinoline-2-carboxylic acid melting at 288°-289° C.
불러오는 중…