Reaction Steps
To a 100 mL round bottom flask charged with NaH (12 mg, 0.5 mmol) was added DMF (6 mL) dropwise, followed by 271 (100 mg, 0.25 mmol). After stirring for about 1 hour, iodomethane (48 mg, 0.33 mmol) was added dropwise at 0° C. in THF. Then the mixture was allowed to warm up to room temperature slowly and stirred for 2 hours. The reaction mixture was poured into water, extracted with EtOAc, the organic phase was dried over anhydrous Na2SO4, concentrated, then purified by pre-TLC (EtOAc) to give 50 mg (52% Yield) of 282. 1H NMR (CDCl3, 400 MHz): δ8.48 (d, J=8.0 Hz, 1H), 7.87 (s, 1H), 7.64 (s, 1H), 7.48-7.44 (m, 2H), 7.14 (s, 1H), 6.04-5.98 (m, 1H), 4.51-4.43 (m, 4H), 3.62 (s, 3H), 2.45 (s, 3H), 1.60 (d, J=6.8 Hz, 6H), and 15 mg (16% yield) of the regioisomer 9-(1,2-dimethyl-1H-imidazol-5-yl)-2-(1-isopropyl-1H-1,2,4-triazol-5-yl)-5,6-dihydrobenzo[f]imidazo[1,2-d][1,4]oxazepine 291 1H NMR (CDCl3, 400 MHz): δ8.57 (d, J=8.0 Hz, 1H), 7.87 (s, 1H), 7.87 (s, 1H), 7.69 (s, 1H), 7.16 (d, J=6.8 Hz, 1H), 7.06-7.04 (m, 2H), 6.02-5.96 (m, 1H), 4.54-4.52 (m, 2H), 4.48-4.47 (m, 2H), 3.59 (s, 3H), 2.46 (s, 3H), 1.60 (d, J=6.8 Hz, 6H). LC-MS: m/z=389 [M+H+].
