[Cl:1][C:2]1[C:9]([OH:10])=[C:8]([O:11][CH3:12])[CH:7]=[CH:6][C:3]=1[CH:4]=[O:5].[CH2:13](Cl)[C:14]1[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=1.[Na].C(=O)([O-])[O-].[K+].[K+]>C(O)C.O>[Cl:1][C:2]1[C:9]([O:10][CH2:13][C:14]2[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=2)=[C:8]([O:11][CH3:12])[CH:7]=[CH:6][C:3]=1[CH:4]=[O:5]A mixture of 78 g of 2-chloro-3-hydroxy-4-methoxybenzaldehyde, 60.7 g of benzyl chloride, 3.9 g of sodium jodide, 74.6 g of potassium carbonate in 0.5 l of 95% ethanol was refluxed for 2 hours. After cooling the mixture was poured in water, the separated product was filtered and then recrystallized from absolute ethanol. 2-chloro-3-benzyloxy-4-methoxybenzaldehyde was obtained, m.p. 86°-88° C.
読み込み中…