Diisopropylethylamine → (R)-5-Bromo-N-(4-(chlorodifluoromethoxy)phenyl)-6-(3-hydroxypyrrolidin-1-yl)nicotinamide

関与物質

反応条件

反応手順

5-Bromo-6-chloro-N-(4-(chlorodifluoromethoxy)phenyl)nicotinamide (Stage 22.2, 206 mg, 0.5 mmol) and (R)-pyrrolidin-3-ol (52.3 mg, 0.6 mmol) were dissolved in iPrOH (1 mL). DIPEA (192 μL, 1.1 mmol) was added and the RM mixture was stirred at 140° C. for 1 h in a sealed vial. After cooling at RT, the RM was dissolved in EtOAc, washed with 0.5 M HCl and brine, dried over Na2SO4 and the solvent was evaporated off under reduced pressure to give a crude product which was purified by flash chromatography (RediSep® Silica gel column, n-heptane/EtOAc from 20% to 100% EtOAc). The resulting product was triturated under n-heptane, filtered and dried to afford the title compound as a white crystalline powder. HPLC (Condition 4) tR=5.68 min, UPLC-MS (Condition 3) tR=1.15 min, m/z=462.1 [M+H]+.

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