Sodium Carbonate → 5-(3-Fluoro-6H-dibenzo[b,e]oxepin-11-ylidenemethyl)-1-isopropyl-1,3-dihydro-benzoimidazol-2-one

Participants

Reaction Steps

Following procedures essentially as described in Example 219, mix 11-bromomethylene-3-fluoro-6,11-dihydro-dibenzo[b,e]oxepine (150 mg, 0.493 mmol), 1-isopropyl-2-oxo-2,3-dihydro-1H-benzoimidazole-5-boronic acid (103 mg, 0.468 mmol)(prepared according to Scheme IX by using isopropylamine in Step A), Na2CO3 (2M in water, 620 □L, 1.23 mmol), dioxane (4 mL), and Pd(PPh3)4 (29 mg, 0.025 mmol). Purify the crude product on silica gel (24 g), eluting with 25% to 50% THF/hexanes to afford 130 mg (69%) of the title compound as a yellow foam. HPLC (ISO80-10) t=3.86 min, 98%; MS [ES] 399 (M−H); 1H-NMR (CDCl3) δ 9.10 (s, 1H), 7.44 (m, 2H), 7.32 (t, 1H, J=7.5 Hz), 7.22 (t, 1H, J=7.5 Hz), 7.11 (d, 1H, J=7.5 Hz), 6.93 (d, 1H, J=8.4 Hz), 6.86 (s, 1H), 6.75 (d, 1H, J=8.4 Hz), 6.69 (s, 1H), 6.66 (td, 1H, J=11.7, 4.1 Hz), 6.52 (dd, 1H, J=10.3, 2.4 Hz), 5.92-4.73 (m, 2H), 4.66 (m, 1H), 1.51 (d, 6H, J=7.0 Hz).

Provenance & Evidence