反应详情

A mixture of (2R)-2-hydroxypropanamide (0.12 g, 1.3 mmol) and triethyloxonium tetrafluoroborate (0.25 g, 1.3 mmol) in tetrahydrofuran (2 mL) became a solution after stirred for 15 min. After another 45 min, this solution was added to a mixture of {trans-4-[(6-aminothieno[3,2-b]pyridin-7-yl)amino]cyclohexyl}acetonitrile (124 mg, 0.433 mmol) in ethanol (3.4 mL) and the resultant mixture was heated at reflux for 2 h. The crude mixture was purified on RP-HPLC (XBridge C18 column, eluting with a gradient of acetonitrile/water containing 0.1% ammonium hydroxide, at flow rate of 30 mL/min) to give the desired product (65 mg, 44%). LCMS calculated for C18H21N4OS (M+H)+: m/z=341.1. Found: 341.1. 1H NMR (DMSO-d6, 400 MHz) δ 8.98 (1H, s), 8.00 (1H, d, J=5.2 Hz), 7.66 (1H, d, J=5.2 Hz), 5.86 (1H, d, J=6.4 Hz), 5.19 (1H, m), 4.92 (1H, m), 2.61 (2H, d, J=6.0 Hz), 2.43 (2H, m), 2.01 (5H, m), 1.64 (3H, d, J=6.4 Hz), 1.40 (2H, m) ppm.

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3. customThe crude mixture was purified on RP-HPLC (XBridge C18 column
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