3-Furaldehyde → 5-(Benzoxazol-2-yl)-2-(furan-3-yl)-1-(tetrahydropyran-4-yl)benzimidazole

Reaction equation

[O:1]1[C:5]2[CH:6]=[CH:7][CH:8]=[CH:9][C:4]=2[N:3]=[C:2]1[C:10]1[CH:11]=[CH:12][C:13]([NH:17][CH:18]2[CH2:23][CH2:22][O:21][CH2:20][CH2:19]2)=[C:14]([CH:16]=1)[NH2:15].[O:24]1[CH:28]=[CH:27][C:26]([CH:29]=O)=[CH:25]1.OOS([O-])=O.[K+].C(=O)([O-])[O-].[K+].[K+]>CN(C)C=O>[O:1]1[C:5]2[CH:6]=[CH:7][CH:8]=[CH:9][C:4]=2[N:3]=[C:2]1[C:10]1[CH:11]=[CH:12][C:13]2[N:17]([CH:18]3[CH2:23][CH2:22][O:21][CH2:20][CH2:19]3)[C:29]([C:26]3[CH:27]=[CH:28][O:24][CH:25]=3)=[N:15][C:14]=2[CH:16]=1