Sodium hydride → US10023592, Example 245

Participants

Reaction Steps

Sodium hydride (42 mg, 1.04 mmol, 60% in mineral oil) was added to the title compound from Example 242, step 1 (80 mg) in anhydrous DMF (4 mL) After stirring 1 h, oxetan-3-ylmethyl methanesulfonate (173 mg, 1.04 mmol) was added and stirring continued for 18 h. EA extractive work up from 1 M HCl and preparative HPLC purification gave the title compound (24.0 mg) as an off-white solid. 1H NMR (CDCl3, 400 MHz) δ 7.85 (d, J=8.8 Hz, 1H), 7.82 (s, 1H), 7.62 (s, 1H), 7.51 (s, 1H), 7.03 (d, J=8.8 Hz, 1H), 4.83 (t, J=7.2 Hz, 1H), 4.57 (t, J=6.4 Hz, 1H), 4.30 (d, J=7.2 Hz, 1H), 3.95 (d, J=6.8 Hz, 1H), 3.62-3.56 (m, 1H), 3.07 (s, 3H), 2.21 (s, 3H), 1.32-1.27 (m, 1H), 0.72-0.68 (m, 2H), 0.40-0.36 (m, 2H). LCMS: 404.1 (M+1)+

Provenance & Evidence