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With cesium fluoride;Pd2dba3; In tetrahydrofuran; N,N-dimethyl-formamide;
b. Synthesis of 3-(8-benzyl-8-azabicyclo[3.2.1]oct-2-en-3-yl)-benzamide To a 100 mL round bottom flask was added toluene-4-sulfonic acid 8-benzyl-8-azabicyclo[3.2.1]oct-2-en-3-yl ester (0.75 g, 2 mmol), 3-carbamoylphenyl boronic acid (0.36 g, 2.2 mmol), Pd2dba3 (0.055 g, 0.06 mmol), 1,5-bis(diphenylphosphino)pentane (0.053 g, 0.12 mmol) and CsF (0.91, 6 mmol). The reaction mixture was purged with nitrogen for 5 min, and THF (8 mL)and 1.5 mL DMF (1.5 mL) were added. The suspension was stirred at room temperature and purged with nitrogen for another 5 min, then heated to 68 C. After 21 h at 68 C., the reaction mixture was cooled to room temperature and partitioned between EtOAc (20 mL) and 1 N NaOH (20 mL). The organic layer was washed with 1:1 brine:water (2*20 mL) and dried over Na2SO4. The organic layer was concentrated to 7 to 8 mL, resulting in a slurry that was filtered to provide the title compound (0.41 g, 64% yield) as off-white solids. (m/z): [M+H]+ calcd for C21H22N2O, 319.18; found 319.4.
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