Potassium Carbonate → 5-(Benzoxazol-2-yl)-2-(imidazol-2-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].[NH:24]1[CH:28]=[CH:27][N:26]=[C:25]1[CH:29]=O.OOS([O-])=O.[K+].C(=O)([O-])[O-].[K+].[K+]>CN(C=O)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:25]3[NH:24][CH:28]=[CH:27][N:26]=3)=[N:15][C:14]=2[CH:16]=1