Methanesulfonamide (52.0 mg, 0.547 mmol) was suspended in MeCN (3 mL) in a sealed vial. 2,3,4,6,7,8,9,10-Octahydropyrimidol[1,2-a]azepine (0.085 mL, 0.57 mmol) was added followed by 4-methylphenyl 4-[(5-chloro-6-fluoropyridin-3-yl)oxy]-2,5-difluorobenzoate (Preparation 67, 215.0 mg, 0.546 mmol). The mixture was heated at 45° C. for 2 hours. The reaction mixture was diluted in EtOAc (15 mL), then washed with 10% aqueous citric acid solution (2×15 mL). The organic layer was dried over sodium sulfate, filtered, and concentrated in vacuo. The resulting solid was partitioned between DCM (10 mL) and water (10 mL). The organic layer was further washed water (2×10 mL) and concentrated in vacuo to yield the title compound as a white solid (75 mg). EtOAc (15 mL) was added to the combined aqueous. The organic layer was then washed with water (3×10 mL), dried over sodium sulfate, filtered and concentrated in vacuo to yield a second batch of the title compound as a white solid (75.0 mg, 35%):
