3-(5-(difluoromethoxy)-3-(tributylstannyl)-1H-indazol-1-yl)-N,N-dimethylpropan-1-amine → 2-(5-(difluoromethoxy)-1-(3-(dimethylamino)propyl)-1H-indazol-3-yl)-N-(1-methylcyclopropyl)-5-trityl-5H-pyrrolo[3,2-b]pyrazine-7-carboxamide

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

To a solution of 3-(5-(difluoromethoxy)-3-(tributylstannyl)-1H-indazol-1-yl)-N,N-dimethylpropan-1-amine (200 mg, 0.36 mmol) and 2-bromo-N-(1-methylcyclopropyl)-5-trityl-5H-pyrrolo[3,2-b]pyrazine-7-carboxamide (250 mg, 0.43 mmol) in DMF (10 mL) were added CuI (18 mg, 0.08 mmol) and Pd(PPh3)4 (14 mg, 0.014 mmol), Then the reaction mixture was degassed by bubbling nitrogen for 3 minutes and refilled with nitrogen. The mixture was heated to 80° C. for 5 hours under nitrogen, after cooling to room temperature, water (50 mL) was added and product extracted with EtOAc (3×40 mL), the combined organic layers were dried over Na2SO4 concentrated under reduced pressure to afford 2-(5-(difluoromethoxy)-1-(3-(dimethylamino)propyl)-1H-indazol-3-yl)-N-(1-methylcyclopropyl)-5-trityl-5H-pyrrolo[3,2-b]pyrazine-7-carboxamide as yellow solid (200 mg, 47%), material used in the next step without further purification. LCMS: (M+H)+=726; (M+Na)+=748.

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