1-Ethynylcyclohexanol → 2,2,2-trifluoro-N-(3-(3-((1-hydroxycyclohexyl)ethynyl)phenyl)propyl)acetamide

関与物質

反応条件

反応手順

To a solution of bromide 10 (2.0 g, 6.45 mmol) and 1-ethynylcyclohexanol (1.2 g, 9.67 mmol) in triethylamine (40 mL) was added CuI (0.0246 g, 0.129 mmol). The mixture was degassed with argon for 2-3 min, then PdCl2(PPh3)2 (0.0905 g, 0.129 mmol) was added. The reaction mixture was degassed with argon again then stirred at 70° C. overnight under argon. After cooling to room temperature, the mixture was concentrated under reduced pressure and suspended in EtOAc-hexanes (50%, 50 mL). Solids were removed by filtration and the filtrate was concentrated under reduced pressure. Purification by flash chromatography gave 2,2,2-trifluoro-N-(3-(3-((1-hydroxycyclohexyl)ethynyl)phenyl)propyl)acetamide as a clear oil. Yield (1.74 g, 76%): 1H NMR (400 MHz, DMSO-d6) δ 9.40 (br s, 1H), 7.26 (t, J=7.6 Hz, 1H), 7.17-7.24 (m, 3H), 5.37 (s, 1H), 3.16 (q, J=6.8 Hz, 2H), 2.56 (t, J=7.2 Hz, 2H), 1.15-1.83 (m, 12H).

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