Methyl 2,2,2-trichloroacetimidate → HCID 178497356, Verbindung

Beteiligte Stoffe

Reaktionsschritte

2.00 g (12.0 mmol) Methyl-3,4-diamino-benzoate were dissolved in 50 mL concentrated acetic acid. Then 2.09 mL (1.4 equiv.) methyl-2,2,2-trichloroacetimidate were added slowly and the resulting mixture was stirred at room temperature for 2 h. The mixture was diluted with 100 mL toluene and the solvent was removed under reduced pressure. The residue was taken up in dichloromethane and washed once with a saturated NaHCO3-solution and once with brine. The organic layer was dried over MgSO4 and the solvent was removed under reduced pressure to give pure methyl-2-trichloromethyl-1H-benzoimidazole-5-carboxylate as a light brown amorphous solid. Yield: 3.64 g MS (ES+): m/e=293, chloro pattern.

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