Bromide ion → 2-Bromo-1-(4-fluoro-phenyl)-3-(4-nitro-phenyl)-propan-1-one

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Reaction Steps

A procedure similar to step 3 of Example 1 was used. 1-(4-fluoro-phenyl)-3-(4-nitro-phenyl)-propan-1-one prepared in the step 1 and bromide were used as starting materials, and anhydrous AlCl3 was used as catalyst, the obtained product was a pale yellow crystal in a yield of 95.3%, mp: 126-128 └. 1H-NMR (CDCl3, 400 MHz) δ: 3.47 (1H, dd, J=14.28, 7.28 Hz), 3.74 (1H, dd, J=14.28, 7.28 Hz), 5.25 (1H, t, J=7.28 Hz, CHBr), 7.15 (2H, t, 3JFH=3JHH=8.40 Hz, ArH), 7.46 (2H, d, J=8.40 Hz, ArH), 8.03 (2H, dd, 3JHH=8.72, 4JFH=5.36 Hz, ArH), 8.17 (2H, d, J=8.40 Hz, ArH); ESI-MS (negative ion): 352.2 (M−1, 54), 350.2 (M-3, 52), 256.2 (100).

Provenance & Evidence