Hydrochloric Acid → Diethyl 4-hydroxy-4-phenylhex-2-enedioate

Reaction equation

[C:1]([c:2]1[cH:3][cH:4][cH:5][cH:6][cH:7]1)(=[O:8])[CH:9]=[CH:10][C:11](=[O:12])[O:13][CH2:14][CH3:15].[CH2:23]1[O:24][CH2:25][CH2:26][CH2:27]1.[CH3:17][CH2:18][O:19][C:20]([CH3:21])=[O:22].[ClH:16]>>[C:1]([c:2]1[cH:3][cH:4][cH:5][cH:6][cH:7]1)([OH:8])([CH:9]=[CH:10][C:11](=[O:12])[O:13][CH2:14][CH3:15])[CH2:21][C:20]([O:19][CH2:18][CH3:17])=[O:22]