Sodium Bicarbonate → (R)-6'-(Hydroxymethyl)-2-(3-hydroxypyrrolidin-1-yl)-N-(4-(trifluoromethoxy)phenyl)-[3,3'-bipyridine]-5-carboxamide

Participants

Reaction Conditions

Reaction Steps

(R)-5-Bromo-6-(3-hydroxypyrrolidin-1-yl)-N-(4-(trifluoromethoxy)phenyl)nicotinamide (Stage 35.1, 89 mg, 0.2 mmol) and (6-(hydroxymethyl)pyridin-3-yl)boronic acid (61.2 mg, 0.4 mmol) were dissolved in DME (0.8 mL). A solution of 2 M NaHCO3 (0.3 mL, 0.6 mmol) was added, the RM was flushed with argon, heated to 90° C. and treated with Pd(PPh3)2Cl2 (14.0 mg, 0.02 mmol). The RM was stirred under argon at 95° C. for 2 h in a sealed pressure safe tube. After cooling to RT, the RM was dissolved in EtOAc and washed with brine. The organic phase was dried over Na2SO4 and evaporated to dryness under reduced pressure. The residue was diluted in MeOH, treated with Si-Thiol (100 mg), the resin was filtered off and the solvent was evaporated off under reduced pressure to give a residue which was purified by flash chromatography (Silica gel column, EtOAc/MeOH, from 0 to 20% MeOH) afforded the title compound as an off-white amorphous solid. HPLC (Condition 4) tR=4 min, UPLC-MS (Condition 3) tR=0.87 min, m/z=475.3 [M+H]+; 1H-NMR (400 MHz, DMSO-d6) δ ppm 1.63-1.76 (m, 1H) 1.77-1.86 (m, 1H) 2.86 (d, J=11.34 Hz, 1H) 3.11-3.26 (m, 2H) 3.33-3.43 (m, 1H) 4.12-4.22 (m, 1H) 4.61 (d, J=5.87 Hz, 2H) 4.84 (d, J=3.13 Hz, 1H) 5.47 (t, J=5.87 Hz, 1H) 7.33 (d, J=8.99 Hz, 2H) 7.53 (d, J=8.21 Hz, 1H) 7.74-7.88 (m, 3H) 8.00 (d, J=2.35 Hz, 1H) 8.51 (d, J=2.35 Hz, 1H) 8.74 (d, J=2.35 Hz, 1H) 10.15 (s, 1H).

Provenance & Evidence