反应详情

温度

110 °C

Intermediate A2 (119 mg, 0.5 mmol), (3-aminophenyl)methanesulfonamide (112 mg, 0.6 mmol), NaOC(CH3)3 (67 mg, 0.7 mmol), PdCl2(CH3CN)2 (6.5 mg, 0.025 mmol, 5 mol %), and (9,9-dimethyl-9H-xanthene-4,5-diyl)bis(diphenylphosphine) [Xantphos] (23 mg, 0.04 mmol, 8 mol %) were dissolved in dry DMF (4 mL) and purged for 10 minutes with nitrogen. After heating at 110° C. for 18 hours the reaction mixture was filtered and the residue washed with toluene. The filtrate was concentrated under reduced pressure and purified by automated column chromatography (ISCO, gradient MeOH/DCM). The collected fractions which contained the title compound were further purified by preparative HPLC to yield 24 mg (12%) of G1 as an off-white solid. 1H NMR (300 MHz, d6-DMSO, 298K) δ 3.84 (s, 3H), 4.22 (s, 2H), 6.81-6.94 (m, 5H), 6.98 (s, 1H), 7.07 (dd, J=11.7 Hz, J=4.2 Hz, 1H), 7.26 (t, J=6.6 Hz, 1H), 7.39 (dd, J=6.9 Hz, J=6.0 Hz, 1H), 7.56-7.61 (m, 1H), 7.79 (d, J=7.5 Hz, 1H), 8.16 (d, J=6.0 Hz, 1H), 9.12 (s, 1H).

1. custompurged for 10 minutes with nitrogen
2. filtrationwas filtered
3. washthe residue washed with toluene
4. concentrationThe filtrate was concentrated under reduced pressure
5. custompurified by automated column chromatography (ISCO, gradient MeOH/DCM)
6. customwere further purified by preparative HPLC
7. customto yield 24 mg (12%) of G1 as an off-white solid