[CH3:1][C:2]1[N:7]=[C:6]([C:8](Cl)=[O:9])[CH:5]=[CH:4][CH:3]=1.[Cl-].[Al+3].[Cl-].[Cl-].[CH3:15][O:16][C:17]1[CH:22]=[CH:21][CH:20]=[CH:19][C:18]=1[O:23][CH3:24]>ClCC(Cl)(Cl)Cl>[CH3:15][O:16][C:17]1[CH:22]=[C:21]([CH:20]=[CH:19][C:18]=1[O:23][CH3:24])[C:8]([C:6]1[CH:5]=[CH:4][CH:3]=[C:2]([CH3:1])[N:7]=1)=[O:9]To an ice-cooled, stirred suspension of 6-methylpicolinic acid chloride and 2 equivalents of aluminum chloride in tetrachloroethane is added slowly an equivalent amount of 1,2-dimethoxybenzene. The reaction mixture is allowed to come to room temperature overnight, then decomposed over cracked ice. Extractive workup followed by chromotography of the organic residue gives the desired ketone.
불러오는 중…