反应详情

TFA (1 mL) was added to a solution of methyl 2-(3-(tert-butoxycarbonyl)-phenyl)-6-(1-(2,2-difluorobenzo[d][1,3]dioxol-5-yl)cyclopropanecarboxamido)nicotinate (290 mg, 0.50 mmol) in CH2Cl2 (2.5 mL). The reaction mixture was stirred at room temperature for 2 hours. The mixture was diluted with CH2Cl2 and neutralized with saturated aqueous NaHCO3. A white precipitate formed which was filtered, washed with H2O and air-dried to yield the product as a white solid (240 mg, 91%). ESI-MS m/z calc. 496.1, found 497.5 (M+1)+. Retention time 1.91 minutes. 1H NMR (400 MHz, DMSO-d6) δ 9.61 (s, 1H), 8.24 (d, J=8.7 Hz, 1H), 8.11 (d, J=8.7 Hz, 1H), 7.98-7.96 (m, 2H), 7.62 (d, J=7.8 Hz, 1H), 7.55-7.51 (m, 2H), 7.40-7.33 (m, 2H), 3.62 (s, 3H), 1.55-1.52 (m, 2H), 1.22-1.19 (m, 2H).

1. customA white precipitate formed which
2. filtrationwas filtered
3. washwashed with H2O
4. customair-dried