C([O:8][C:9](=[O:26])[CH2:10][C:11]1[CH:12]=[C:13]([CH:23]=[CH:24][CH:25]=1)[O:14][CH2:15][CH2:16][CH2:17][C:18]([O:20][CH2:21]C)=[O:19])C1C=CC=CC=1>CO.[Pd]>[CH3:21][O:20][C:18](=[O:19])[CH2:17][CH2:16][CH2:15][O:14][C:13]1[CH:12]=[C:11]([CH2:10][C:9]([OH:26])=[O:8])[CH:25]=[CH:24][CH:23]=1The mixture of ethyl 4-(3-(2-(benzyloxy)-2-oxoethyl)phenoxy)butanoate (2.05 g, 5.77 mmol) and Pd/C (0.207 g) in methanol was stirred at room temperature under H2 overnight. The mixture was filtered and the filtrate was concentrated under reduce pressure. The residue was washed with ether, filtrated and dried to obtain 2-(3-(4-methoxy-4-oxobutoxy)phenyl)acetic acid (compound 0202-35) (1 g, 66%): LCMS: 267 [M+1]+.
Wird geladen…