[C:1]([O:5][C:6]([C:8]1[NH:9][N:10]=[C:11]([CH2:13][O:14][CH2:15][CH2:16][O:17][CH2:18][CH2:19][O:20][CH3:21])[CH:12]=1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[H-].[Na+].Br[CH2:25][C:26]([NH:28][C:29]1[CH:34]=[CH:33][C:32]([Cl:35])=[CH:31][N:30]=1)=[O:27].O>CN(C=O)C>[C:1]([O:5][C:6]([C:8]1[CH:12]=[C:11]([CH2:13][O:14][CH2:15][CH2:16][O:17][CH2:18][CH2:19][O:20][CH3:21])[N:10]([CH2:25][C:26](=[O:27])[NH:28][C:29]2[CH:34]=[CH:33][C:32]([Cl:35])=[CH:31][N:30]=2)[N:9]=1)=[O:7])([CH3:4])([CH3:3])[CH3:2]To a solution of 350 mg 5-[2-(2-Methoxy-ethoxy)-ethoxymethyl]-2H-pyrazole-3-carboxylic acid tert-butyl ester in 5 ml of DMF and 46 mg of sodium hydride (60% in mineral oil) were added at RT. After stirring for 20 min at room temperature 290 mg of 2-Bromo-N-(5-chloro-pyridin-2-yl)-acetamide were added. The reaction was stirred at room temperature for 3 h. Then 10 ml of water were added and the mixture was filtered through a Chem Elut® cartridge by elution with DCM. After concentration under reduced pressure the crude was subjected to the next reaction without further purification. Yield: 400 mg.
Wird geladen…