反应 #42703

反应方程式

cinnamyl carbonate

p-fluoroaniline

→

title compound

收率 97.0%

α-Ethynyl-N-(p-fluorophenyl)-benzenemethanamine

收率 97.0%

反应条件

后处理

1. 1
   其他1H NMR analysis of the crude reaction mixture
2. 2
   其他The mixture was purified by flash column chromatography on silica gel (1.5% ethyl acetate in hexanes)

实验过程

The general procedure was followed with cinnamyl carbonate (0.188 g, 0.979 mmol) and p-fluoroaniline (0.130 g, 1.17 mmol). The reaction was conducted at room temperature for 12 h. 1H NMR analysis of the crude reaction mixture indicated the ratio of regioisomers to be 95/5. The mixture was purified by flash column chromatography on silica gel (1.5% ethyl acetate in hexanes) to give the title compound (0.214 g, 96%). HPLC analysis indicated the enantiomeric excess of the product was 94% [Diacel CHIRALCEL OD-H (0.46 cm×25 cm); hexane/2-propanol=99.75/0.25; flow rate=0.6 mL/min; detection wavelength=254 nm; TR=22.5 (major), 29.4 (minor) min]: [α]DRT=(c, CHCl3). 1H NMR (400.13 MHz, CDCl3) δ 7.48-7.41 (m, 4H), 7.39-7.34 (m, 1H), 6.96-6.89 (m, 2H), 6.63-6.56 (m, 2H), 6.11 (ddd, J=16.8, 10.4, 6.0 Hz, 1H), 5.36 (dt, J=17.2, 1.2 Hz, 1H), 5.31 (dt, J=10.0, 1.2 Hz, 1H), 4.95 (d, J=5.6 Hz, 1H), 4.02 (br s, 1H). 13C NMR (100.59 MHz, CDCl3) δ 155.76 (d. J=234 Hz), 143.44 (d, J=2.3 Hz), 141.61, 128.71, 127.45, 127.03, 116.03, 115.44 (d, J=22.1 Hz), 114.30 (d, J=8.4 Hz), 61.36. Anal. Calcd for C15H14NF: C, 79.27; H, 6.21; N, 6.16; F, 8.36. Found: C, 79.16; H, 6.24; N, 6.24; F, 8.46.

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