反应详情

(R)-5-Bromo-6-(3-hydroxypyrrolidin-1-yl)-N-(4-(trifluoromethoxy)phenyl)nicotinamide (Stage 35.1, 200 mg, 0.448 mmol), 5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)nicotinonitrile (206 mg, 0.896 mmol), Pd(PPh3)2Cl2 (31.5 mg, 0.045 mmol) and Na2CO3 (143 mg, 1.345 mmol) were added to a MW vial and treated with a mixture of DME (1.902 mL), water (543 μL) and EtOH (272 μL). The vial was sealed, evacuated/purged with argon and then the RM was subjected to MW irradiation at 120° C. for 10 min, then cooled to RT and finally treated with Si-Thiol (1.27 mmol/g, 176 mg, 0.224 mmol) overnight. The RM was filtered and the solvent was evaporated off under reduced pressure to give a residue which was purified by preparative HPLC (Condition 12, 25% for 0.2 min then 25% to 55% in 14 min.) to yield the title compound as a white solid. UPLC-MS (condition 1) tR=2.30 min, m/z=470.0-471.0 [M+H]+, m/z=468.0-469.0 [M−H]−; 1H-NMR (400 MHz, DMSO-d6) δ ppm 1.70-1.79 (m, 1H) 1.80-1.92 (m, 1H) 2.86 (d, J=11.25 Hz, 1H) 3.16-3.27 (m, 2H) 3.34-3.44 (m, 1H) 4.17-4.24 (m, 1H) 4.70-5.04 (m, 1H) 7.35 (d, J=8.80 Hz, 2H) 7.82-7.88 (m, 2H) 8.09 (d, J=2.45 Hz, 1H) 8.40 (t, J=2.08 Hz, 1H) 8.79 (d, J=2.20 Hz, 1H) 8.90 (d, J=1.96 Hz, 1H) 9.02 (d, J=1.96 Hz, 1H) 10.17 (s, 1H).

1. customThe vial was sealed
2. customevacuated/purged with argon
3. customthe RM was subjected to MW irradiation at 120° C. for 10 min
4. filtrationThe RM was filtered
5. customthe solvent was evaporated off under reduced pressure
6. customto give a residue which
7. customwas purified by preparative HPLC (Condition 12, 25% for 0.2 min