[Br:1][C:2]1[CH:15]=[CH:14][C:5]([CH2:6][N:7]2[CH2:12][CH2:11][CH:10]([OH:13])[CH2:9][CH2:8]2)=[CH:4][CH:3]=1.C(N(CC)CC)C.[C:23](Cl)(=[O:30])[C:24]1[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=1>C1(C)C=CC=CC=1>[C:23]([O:13][CH:10]1[CH2:9][CH2:8][N:7]([CH2:6][C:5]2[CH:4]=[CH:3][C:2]([Br:1])=[CH:15][CH:14]=2)[CH2:12][CH2:11]1)(=[O:30])[C:24]1[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=10.108 g (0.0004 mol) of 1-(4-bromo-benzyl)-piperidin-4-ol and 0.12 ml (0.00085 mol) of triethylamine were dissolved in 4 ml of toluene, treated with 0.058 ml (0.0005 mol) of benzoyl chloride and boiled at reflux for 18 hrs. The reaction mixture was concentrated and the residue was chromatographed over silica gel with ethyl acetate/hexane (1:1). 0.125 g (83.5%) of 1-(4-bromo-benzyl)-piperidin-4-yl benzoate was obtained as a colorless oil.
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