Acetaldehyde → 5-(Benzoxazol-2-yl)-1-(2-methoxyphenyl)-2-methylbenzimidazole

Reaction equation

[CH3:1][O:2][C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][C:4]=1[NH:9][C:10]1[CH:16]=[CH:15][C:14]([C:17]2[O:18][C:19]3[CH:25]=[CH:24][CH:23]=[CH:22][C:20]=3[N:21]=2)=[CH:13][C:11]=1[NH2:12].[CH:26](=O)[CH3:27].OOS([O-])=O.[K+].C(=O)([O-])[O-].[K+].[K+]>CN(C)C=O>[O:18]1[C:19]2[CH:25]=[CH:24][CH:23]=[CH:22][C:20]=2[N:21]=[C:17]1[C:14]1[CH:15]=[CH:16][C:10]2[N:9]([C:4]3[CH:5]=[CH:6][CH:7]=[CH:8][C:3]=3[O:2][CH3:1])[C:26]([CH3:27])=[N:12][C:11]=2[CH:13]=1