N-bromobutanimide → HCID 59856906, compound

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Reaction Steps

4-[6-(2-fluoro-4-methanesulfonyl-phenoxy)-pyrimidin-4-yloxy]-piperidine-1-carboxylic acid isopropyl ester (1.02 g, 2.25 mmol) and NBS (601 mg, 3.38 mmol) in acetic acid (10 mL) was stirred at 40° C. for three days. The mixture was purified through HPLC to provide compound C155 as a solid (685 mg, 50%). 1H NMR (CDCl3, 400 MHz) δ 1.24 (d, 6H), 1.82-1.86 (m, 2H), 1.94-1.98 (m, 2H), 3.08 (s, 3H), 3.46-3.52 (m, 2H), 3.68-3.74 (m, 2H), 4.92 (hept, 1H), 5.38-5.42 (m, 1H), 7.42-7.46 (m, 1H), 7.77-7.81 (m, 2H), 8.18 (s, 1H). Exact mass calculated for C20H23FBrN3O6S 531.1, found 532.4/534.4 (MH+).

Provenance & Evidence