Reaktion #46798

Reaktionsgleichung

toluene

K2CO3

2-bromo-N-(5-Chloro-pyridin-2-yl-)-acetamide

2-(Isopropyl-piperidin-4-ylcarbamoyl)-1H-benzoimidazole-4-carboxylic acid methyl ester

→

1-[(5-Chloro-pyridin-2-ylcarbamoyl)-methyl]-2-(1-isopropyl-piperidin-4-ylcarbamoyl)-1H-benzoimidazole-4-carboxylic acid methyl ester

Lösungsmittel

DMF

Reaktionsbedingungen

Aufarbeitung

1. 1
   Waschenwashed with a sat. NaHCO3 solution and brine
2. 2
   TrocknenThe organic layer was dried over MgSO4
3. 3
   Sonstigethe solvent was removed under reduced pressure
4. 4
   SonstigeThe residue was purified by preparative HPLC (CH3CN/H2O gradient+0.05% formic acid)

Vorschrift

100.8 mg (0.29 mmol) 2-(Isopropyl-piperidin-4-ylcarbamoyl)-1H-benzoimidazole-4-carboxylic acid methyl ester were dissolved in 6 mL DMF. Subsequently 60.6 mg (0.44 mmol) K2CO3 and 87.5 mg (0.35 mmol) 2-bromo-N-(5-Chloro-pyridin-2-yl-)-acetamide were added and the resulting mixture was stirred for 3 h at 80° C. The reaction mixture was diluted with 60 mL toluene and washed with a sat. NaHCO3 solution and brine. The organic layer was dried over MgSO4 and the solvent was removed under reduced pressure. The residue was purified by preparative HPLC (CH3CN/H2O gradient+0.05% formic acid) to give 1-[(5-Chloro-pyridin-2-ylcarbamoyl)-methyl]-2-(1-isopropyl-piperidin-4-ylcarbamoyl)-1H-benzoimidazole-4-carboxylic acid methyl ester as a white amorphous solid. The product was obtained as its hydroformiate.

Quelle