Dimethyl Sulfoxide → 2-[4-(4-Methoxycarbonylbenzoyl)benzyloxy]-3-methyl-4H-pyrido[1,2-a]pyrimidin-4-one

Reaction equation

[CH3:1][CH:2]1[C:7](=[O:8])[N:6]2[CH:9]=[CH:10][CH:11]=[CH:12][C:5]2=[N:4][C:3]1=[O:13].[CH3:14][O:15][C:16]([C:18]1[CH:33]=[CH:32][C:21]([C:22]([C:24]2[CH:31]=[CH:30][C:27]([CH2:28]Br)=[CH:26][CH:25]=2)=[O:23])=[CH:20][CH:19]=1)=[O:17].CS(C)=O.C(=O)([O-])[O-].[K+].[K+]>CN(C=O)C.O>[CH3:14][O:15][C:16]([C:18]1[CH:33]=[CH:32][C:21]([C:22]([C:24]2[CH:25]=[CH:26][C:27]([CH2:28][O:13][C:3]3[N:4]=[C:5]4[CH:12]=[CH:11][CH:10]=[CH:9][N:6]4[C:7](=[O:8])[C:2]=3[CH3:1])=[CH:30][CH:31]=2)=[O:23])=[CH:20][CH:19]=1)=[O:17]