Trityl chloride → N-Phenyl-1-trityl-1H-imidazol-2-amine

Reaction equation

[C:1](Cl)([C:14]1[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=1)([C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[C:21]1([NH:27][C:28]2[NH:29][CH:30]=[CH:31][N:32]=2)[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=1.C(N(CC)CC)C>C(Cl)Cl>[C:21]1([NH:27][C:28]2[N:32]([C:1]([C:14]3[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=3)([C:8]3[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=3)[C:2]3[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=3)[CH:31]=[CH:30][N:29]=2)[CH:22]=[CH:23][CH:24]=[CH:25][CH:26]=1

Participants

Procedure

Trityl chloride (2.79 g, 10 mmol) was added to an ice-cooled solution of phenyl amino imidazole (c) (1.59 g, 10 mmol) and triethylamine (1.01 g, 10 mmol) in methylene dichloride (50 mL). The reaction mixture was allowed to warm to RT and stirred overnight. The mixture was diluted with methylene dichloride, washed successively with H2O, saturated NaHCO3, brine and dried with MgSO4. Filtration and evaporation of the solvent followed by chromatography separation gave the product (d). 1H NMR (500 MHz, CDCl3) δ 7.52-7.35 (m, 5H), 7.28-7.43 (m, 15H), 6.85 (s, 2H), 6.41 (s, 1H), 6.08 (s, 1H). MS: 1399.8 (M−H)−; 402.8 (M+H)+.