Sodium Hydroxide → N-Boc-4-(4-carboxy-2-cyclopropyl-2H-pyrazol-3-yl)-piperidine

関与物質

反応条件

反応手順

A solution of 1.71 mL (3.42 mmol) of 2M NaOH was added to 0.540 g (1.49 mmol) N-Boc-4-(2-cyclopropyl-4-ethoxycarbonyl-2H-pyrazol-3-yl)-piperidine in 15 mL of EtOH. After stirring at 60° C. for 18 h, the solution was concentrated and dissolved in 100 mL of EtOAc (100 mL) and 10 mL of 5% HCl (10 mL). The extract was washed with 50 mL of brine (50 mL), dried over MgSO4, filtered, concentrated, and chromatographed (0–100% EtOAc in hexanes) to give 330 mg of N-Boc-4-(4-carboxy-2-cyclopropyl-2H-pyrazol-3-yl)-piperidine as a white powder.

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