[CH2:1]([O:3]C1C=C(C=O)C=C(O)C=1C(OC)=O)[CH3:2].[OH:17][C:18]1[CH:19]=[C:20]([CH:23]=[CH:24][C:25]=1[O:26][CH3:27])[CH:21]=[O:22].BrCCO>>[OH:3][CH2:1][CH2:2][O:17][C:18]1[CH:19]=[C:20]([CH:23]=[CH:24][C:25]=1[O:26][CH3:27])[CH:21]=[O:22]Followed procedure described in Intermediate 8, step 1 starting from 3-hydroxy-4-methoxybenzaldehyde and 2-bromoethanol with the reaction conditions of 90° C. overnight. Isolated 400 mg, yield 62.5%.
Wird geladen…