Iodine → HCID 178497289、化合物

関与物質

反応手順

To a solution of methyl 1H-indazole-6-carboxylate D-2 (5.0 g, 28 mmol) in DMAC (50 mL) at 0° C. was added iodine (14.4 g, 56.7 mmol) and potassium hydroxide (6.3 g, 114 mmol) portionwise. After addition, the mixture was kept stirring for 1 h, then quenched with aq. Na2S2O3 and extracted with EtOAc. The combined organics were concentrated and trituated with hexane. The precipitate was collected by filtration to afford the title compound as a brown solid. LCMS (ESI) calc'd for C9H8IN2O2 [M+H]+: 302.9. found: 302.9.

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