Water → 4-Bromo-5-(4-methyl-2-oxo-4-phenyl-valeroylamino)-phthalide

Reaction equation

[CH3:1][C:2]([C:10]1[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=1)([CH3:9])[CH2:3][C:4](=[O:8])[C:5]([OH:7])=O.S(Cl)(Cl)=O.[Br:20][C:21]1[C:30]([NH2:31])=[CH:29][CH:28]=[C:27]2[C:22]=1[CH2:23][O:24][C:25]2=[O:26].O>CC(N(C)C)=O>[Br:20][C:21]1[C:30]([NH:31][C:5](=[O:7])[C:4](=[O:8])[CH2:3][C:2]([CH3:1])([C:10]2[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=2)[CH3:9])=[CH:29][CH:28]=[C:27]2[C:22]=1[CH2:23][O:24][C:25]2=[O:26]