[CH3:1][C:2]1[C:11]2[C:6](=[CH:7][CH:8]=[CH:9][CH:10]=2)[CH:5]=[C:4]([C:12]2[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=2)[N:3]=1.[Br:18]N1C(=O)CCC1=O.C(OOC(=O)C1C=CC=CC=1)(=O)C1C=CC=CC=1>C(Cl)(Cl)(Cl)Cl>[Br:18][CH2:1][C:2]1[C:11]2[C:6](=[CH:7][CH:8]=[CH:9][CH:10]=2)[CH:5]=[C:4]([C:12]2[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=2)[N:3]=1A mixture of 1-methyl-3-phenylisoquinoline (21 g), N-bromosuccinimide (30.6 g) and benzoyl peroxide (1 g) in carbon tetrachloride (730 cc) is brought to boiling for 48 hours. After being cooled, the mixture is filtered and the filtrate evaporated to dryness under reduced pressure. The residue is chromatographed on silica gel with a toluene/methanol (98:2 by volume) mixture as eluant. After crystallization in isopropyl ether, 1-bromomethyl-3-phenylisoquinoline (11 g), m.p. 84° C., is obtained.
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