Ethyl bromoacetate → 2-((1-methyl-1H-indazol-6-yl)oxy)acetic acid

関与物質

反応手順

To a solution of NaH (146 mg, 6.06 mmol) in DMF (3 mL) was added 1-methyl-1H-indazol-6-ol (300 mg, 2.02 mmol) at 25° C. After stirring for 5 minutes, ethyl 2-bromoacetate (406 mg, 2.43 mmol) was added and stirred for 16 h at 25° C. The mixture was then diluted with water (50 mL) and washed with ethyl acetate (2×20 mL). The water layer was then acidified by adding with 2N HCL until pH3 and then extracted with ethylacetate (2×20 ml). The combined organic layers were washed with brine (30 mL), dried over Na2SO4 and concentrated to give the crude product (300 mg, 63.4%) as colorless oil. It was used in next step without further purification. LCMS (m/z): 207.1 (M+1).

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