반응 #160918

반응 방정식

DIPEA

6-chloro-5-(4-methyl-1-(tetrahydro-2H-pyran-2-yl)-1H-pyrazol-5-yl)-N-(4-(trifluoromethoxy)phenyl)nicotinamide

(R)-pyrrolidin-3-ol

→

6-((R)-3-hydroxypyrrolidin-1-yl)-5-(4-methyl-1-(tetrahydro-2H-pyran-2-yl)-1H-pyrazol-5-yl)-N-(4-(trifluoromethoxy)phenyl)nicotinamide

용매

iPrOH

EtOAc

반응 조건

후처리

1. 1
   기타was sealed
2. 2
   온도After cooling to RT
3. 3
   세척washed with brine
4. 4
   건조dried over Na2SO4
5. 5
   기타the solvent was evaporated off under reduced pressure
6. 6
   기타the crude product was purified by flash chromatography (RediSep® Silica gel column, EtOAc/MeOH 98:2)

실험 절차

DIPEA (43.9 μL, 0.252 mmol) was added to a solution of 6-chloro-5-(4-methyl-1-(tetrahydro-2H-pyran-2-yl)-1H-pyrazol-5-yl)-N-(4-(trifluoromethoxy)phenyl)nicotinamide (Stage 4.1, 55 mg, 0114 mmol) and (R)-pyrrolidin-3-ol (11.96 mg, 0.137 mmol) in iPrOH (114 μL) in a vial, which was sealed and heated at 140° C. for 18 h. After cooling to RT, the RM was dissolved in EtOAc, washed with brine, dried over Na2SO4 and the solvent was evaporated off under reduced pressure and the crude product was purified by flash chromatography (RediSep® Silica gel column, EtOAc/MeOH 98:2) to afford 6-((R)-3-hydroxypyrrolidin-1-yl)-5-(4-methyl-1-(tetrahydro-2H-pyran-2-yl)-1H-pyrazol-5-yl)-N-(4-(trifluoromethoxy)phenyl)nicotinamide as an off-white foam. This intermediate (39 mg, 0.073 mmol) was dissolved in DCM (0.8 mL), treated with TFA (0.262 mL, 3.4 mmol) and stirred at RT for 3 h. The RM was poured into 25 mL Na2CO3 10% and extracted with EtOAc. The combined extracts were dried over Na2SO4 and the solvent was evaporated off under reduced pressure and the crude product was purified by flash chromatography (RediSep® Silica gel column, DCM/MeOH from 2% to 10% MeOH) to afford the title compound as an off-white powder. HPLC (Condition 4) tR=4.46 min, UPLC-MS (Condition 3) tR=0.92 min, m/z=448.4 [M+H]+; 1H-NMR (400 MHz, DMSO-d6) δ ppm 1.64-1.81 (m, 2H) 1.86 (s, 3H) 2.78-2.97 (m, 1H) 3.07-3.41 (m, 3H) 4.18 (br. s, 1H) 4.81 (br. s, 1H) 7.32 (d, J=8.60 Hz, 2H) 7.58 (br. s, 1H) 7.85 (d, J=9.38 Hz, 2H) 7.93 (br. s, 1H) 8.73 (br. s, 1H) 10.14 (s, 1H) 12.63 (br. s, 1H).

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