[CH3:1][C:2]1[CH:7]=[C:6]([N+:8]([O-:10])=[O:9])[CH:5]=[CH:4][C:3]=1[C:11]([F:14])([F:13])[F:12].C1C(=O)N([Br:22])C(=O)C1>C(Cl)(Cl)(Cl)Cl.C(OOC(=O)C1C=CC=CC=1)(=O)C1C=CC=CC=1>[Br:22][CH2:1][C:2]1[CH:7]=[C:6]([N+:8]([O-:10])=[O:9])[CH:5]=[CH:4][C:3]=1[C:11]([F:12])([F:13])[F:14]To a solution of 2-methyl-4-nitrobenzotrifluoride (5.05 g, 24.6 mmol, synthesised according to Journal of medicinal chemistry (1996), 39(23), 4608-4621) in carbon tetrachloride (50 ml) was added NBS (4.77 g, 26.8 mmol, Aldrich) and then benzoyl peroxide (0.110 g, 0.454 mmol, Acros). The mixture was heated to 90° C. overnight, cooled to ambient temperature and the allowed to stand for 4 days. The suspension was filtered and the residue washed with carbon tetrachloride (10 ml). The solvent was removed in vacuo to give 2-(bromomethyl)-4-nitro-1-(trifluoromethyl)benzene as a mobile orange oil (7.33 g).
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