Dimethylacetamide → 5-(2,4-Difluorophenoxy)-1-isobutyl-1h-indazole-6-carbonitrile

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

6-Bromo-5-(2,4-difluorophenoxy)-1-isobutyl-1H-indazole (31.2 g, 82 mmol) and Cu(I)CN (13.9 g, 156 mmol) were dissolved in DMA and degassed with nitrogen under vacuum. The reaction mixture was heated to 150° C. for 16 hours. The mixture was then cooled to room temperature and diluted with ethyl acetate before washing twice with 7M NH4OH. The organic layer was washed with brine and degassed with nitrogen before being dried over MgSO4 and concentrated under reduced pressure. The crude product was chromatographed eluting with 10% ethyl acetate in hexanes to afford 25.1 g of the desired product (95% yield).

Herkunft & Nachweise