Potassium Carbonate → phenylmethyl 3-(4-amino-6-methyl-1H-indazol-1-yl)benzoate

関与物質

反応手順

6-Methyl-1H-indazol-4-amine hydrochloride (0.5 g, 2.7 mmol), phenylmethyl 3-iodobenzoate (0.9 g, 2.6 mmol), copper (I) iodide (14 mg, 0.07 mmol), potassium carbonate (1.2 g, 8.68 mmol) and trans-N,N′-dimethyl-1,2-cyclohexanediamine (20 mg, 0.14 mmol) were heated together in DMF (5 mL) at reflux overnight. The mixture was poured into water (15 mL) and ethyl acetate was added to dissolve the resulting oil. The suspension was then filtered through celite. The organic phase was separated, combined with a second ethyl acetate extract, washed successively with water and brine and then dried over anhydrous sodium sulphate and evaporated under reduced pressure. The residue was purified by silica gel column chromatography (75 g) eluting with 1 to 5% gradient of ethyl acetate in dichloromethane to give the title compound as a light brown oil (0.3 g).

情報源と証拠