Sodium hydride → 832717-22-3

Participants

Reaction Steps

4-hydroxy-piperidine-1-carboxylic acid tert-butyl ester (0.1 g, 0.49 mmol) was dissolved in anhydrous THF (5 mL) and treated with NaH, 60% oil dispersion (20 mg, 0.49 mmol) at ambient temperature. After stirring for 10 min, 7-chloro-3-(4-methanesulfonyl-phenyl)-isoxazolo[4,5-d]pyrimidine (0.15 g, 0.49 mmol) was added. The reaction was stirred for 3 h and concentrated under vacuum. The residue was purified by column chromatography using ethyl acetate and hexane (1/1) to afford 4-[3-(4-methanesulfonyl-phenyl)-isoxazolo[4,5-d]pyrimidin-7-yloxy]-piperidine-1-carboxylic acid tert-butyl ester (0.14 g, 61%). 1H NMR (400 Mz, DMSO-d6) δ 8.51 (s, 1H), 8.42 (d, J=7.1, 2H), 8.43 (d, J=7.1, 2H), 4.11˜3.83 (m, 4H), 3.52 (m, 1H), 3.26 (s, 3H), 1.41˜1.22 (m, 4H). LCMS 475.3[M+H].

Provenance & Evidence