反应详情

To a solution of 3-hydroxyquinuclidine-3-carbonitrile (38 mg, 0.25 mmol) in acetonitrile/dioxane (3 mL) at room temperature was added triethylamine (7.0 uL, 0.05 mmol). The reaction mixture was stirred for 15 min and 1-(2-isocyanatopropan-2-yl)-3-(prop-1-en-2-yl)benzene (49.0 uL, 0.248 mmol) was added dropwise. The reaction was stirred for a period of 18 h at 65° C. and concentrated. The crude material was purified on a combiflash (SiO2 cartridge, CHCl3 and 2N NH3 in MeOH) to afford the corresponding carbamate as a clear oil (57 mg, 65%). 1H NMR (400 MHz, CDCl3) δ 7.42-7.20 (s, 5H), 6.61 (s, 1H), 5.11 (s, 1H), 3.29 (d, J=12.0 Hz, 1H), 3.09 (d, J=12.0 Hz, 1H), 2.93 (d, J=4.0 Hz, 2H), 2.79-2.68 (m, 2H), 2.13 (s, 6H) 2.05-2.00 (m, 2H), 1.91 (s, 3H), 1.87 (s, 2H), 1.50-1.37 (m, 2H) ppm. 13C NMR (100 MHz, CDCl3) δ 135.4, 128.7, 125.2, 124.5, 124.0, 122.0, 112.9, 61.2, 47.0, 46.2, 32.4, 31.8, 29.9, 29.4, 29.2, 26.6, 25.7, 23.7, 22.8, 22.2, 19.2 ppm. Purity: >99% UPLCMS (210 nm); retention time 0.81 min; (M+1) 354.

1. stirringThe reaction was stirred for a period of 18 h at 65° C.
2. concentrationconcentrated
3. customThe crude material was purified on a combiflash (SiO2 cartridge, CHCl3 and 2N NH3 in MeOH)