反应详情

(3-Trifluoromethyl-4,5,6,7-tetrahydroindazol-1-yl)-acetic acid (638 mg, 2.57 mmol) was suspended in a solution of DCM (10 mL) and DMF (1 mL) and O-(7-azabenzotriazol-1-yl)-N,N,N′,N′-tetramethyluronium hexafluorophosphate (1.17 g, 3.08 mmol) and N,N′-diisopropylethylamine (537 μL, 3.08 mmol) added, followed by 2-Amino-4,5,6,7-tetrahydro-benzo[b]thiophene-3-carboxylic acid tert-butyl ester (651 mg, 2.57 mmol). The resultant mixture was stirred at RT overnight. The solution was concentrated in vacuo. The residue was purified by silica gel chromatography using DCM as eluent, to afford the title compound as a yellow solid (0.93 g, 1.93 mmol, 75%).

1. additionadded
2. concentrationThe solution was concentrated in vacuo
3. customThe residue was purified by silica gel chromatography