反应详情

温度

60 °C

The product from Example 31 (20 mg, 0.05 mmol) in TFA (0.5 mL) was treated with triethylsilane (54 mg, 0.5 mmol). The mixture was heated at 60° C. for 12 hrs, solvent evaporated and the residue purified by reverse phase preparative HPLC on a Waters Symmetry C8 column (25 mm×100 mm, 7 μm particle size) using a gradient of 10% to 100% acetonitrile: 0.1% aqueous trifluoroacetic acid over 8 minutes (10 minutes run time) at a flow rate of 40 mL/minute to afford 4.8 mg (25%) of the title compound. 1H NMR (400 MHz, CDCl3) δ ppm 1.61 (s, 9 H) 3.93 (s, 3 H) 4.18 (s, 2 H) 6.92 (d, J=8.90 Hz, 1 H) 7.20-7.28 (m, 1 H) 7.29-7.39 (m, 5 H) 7.78 (s, 1 H) 8.14 (d, J=2.76 Hz, 1 H); MS (DCI/NH4+) m/z 415 (M+H)+.

1. customsolvent evaporated
2. customthe residue purified by reverse phase preparative HPLC on a Waters Symmetry C8 column (25 mm×100 mm, 7 μm particle size)