Diisopropylethylamine → (R)-N-(4-((Difluoromethyl)thio)phenyl)-6-(3-hydroxypyrrolidin-1-yl)-5-(pyrimidin-5-yl)nicotinamide

Participants

Reaction Steps

A mixture of (R)-6-(3-hydroxypyrrolidin-1-yl)-5-(pyrimidin-5-yl)nicotinic acid (Stage 170.1, 60 mg, 0.21 mmol), O-(7-azabenzotriazol-1-yl)-N,N,N′,N′-tetramethyluronium hexafluorophosphate (HATU, 88 mg, 0.231 mmol) and DIPEA (73.2 μL, 0.419 mmol), in DMF (419 μL), was stirred at RT for 10 min. 4-Difluoromethylsulfanyl-aniline (60 mg, 0.21 mmol) was added and the RM was stirred for 2 days. The RM was diluted with EtOAc and washed with brine. The organic phase was dried over MgSO4 and evaporated to dryness under reduced pressure. The crude product was purified by preparative SFC (Column 2-EP, from 20% to 25% in 6 min) to obtain the title compound as a solid. UPLC-MS (Condition 3), tR=0.86 min, m/z=444.3 [M+H]+; 1H-NMR (400 MHz, DMSO-d6), δ ppm (TFA), 1.82 (br. s, 1H) 1.90 (d, J=8.60 Hz, 1H) 2.97 (d, J=10.95 Hz, 1H) 3.28 (d, J=7.04 Hz, 2H) 3.35-3.47 (m, 1H) 4.26 (br. s, 1H) 7.49-7.63 (m, 2H) 7.79-7.90 (m, 2H) 8.25 (br. s, 1H) 8.74 (br. s, 1H) 8.89-8.98 (m, 2H) 9.20-9.28 (m, 1H).

Provenance & Evidence