反应详情

温度

50 °C

A solution of 1-(bromomethyl)-4-fluoro-2-iodobenzene (M. Protiva et al., Collect. Czech. Chem. Comm., 44, 1979, 2108–2123) (17.9 g, 56.8 mmol) in N,N-dimethylformamide (35 ml) was treated with sodium azide (5.0 g, 76.7 mmol) and the resulting mixture was heated to 50° C. for 4 h. The cooled mixture was filtered, the filtrate was concentrated in vacuo and the residue was chromatographed on silica gel (elution hexane) to give 15.7 g (97% yield) of the title azide as a clear oil. 1HNMR 400 MHz (DMSO-d6) δ (ppm): 4.53 (2H, s, CH2), 7.32 (1H, m, aromatic), 7.54 (1H, dd, J=6 Hz and J=8.6 Hz, aromatic), 7.83 (1H, dd, J=3 Hz and J=8 Hz, aromatic).

1. filtrationThe cooled mixture was filtered
2. concentrationthe filtrate was concentrated in vacuo
3. customthe residue was chromatographed on silica gel (elution hexane)