反应详情

A solution of 4-(1-cyclopentyl-7-fluoro-1H-indazol-3-yl)phenol (0.30 g, 1.0 mmol) and ethyl isocyanate (0.080 mL, 1.0 mmol) in 10 mL of dioxane was heated at 80° C. for 48 hours. The reaction mixture was concentrated in vacuo. The residue was crystallized from EtOAc/hexane to give 0.275 g of the title compound as a white solid.

1. concentrationThe reaction mixture was concentrated in vacuo
2. customThe residue was crystallized from EtOAc/hexane