1-[(3-bromophenyl)methyl]piperidin-4-ol

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 0.38 g (0.001.41 mol) of 1-(3-bromo-benzyl)-piperidin-4-ol and 0.49 ml (0.0035 mol) of triethylamine were dissolved in 4 ml of toluene, treated with 0.23 ml (0.00176 mol) of p-toluoyl 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 (1:4). 0.358 g (65%) of 1-(3-bromo-benzyl)-piperidin-4-yl 4-methyl-benzoate was obtained as a yellow oil. at reflux for 18 hrs The reaction mixture was concentrated the residue was chromatographed over silica gel with ethyl acetate/hexane (1:4)

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 0.108 g (0.0004 mol) of 1-(3-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). 0.08 g (53.5%) of 1-(3-bromo-benzyl)-piperidin-4-yl benzoate was obtained as a colorless oil. at reflux for 18 hrs The reaction mixture was concentrated the residue was chromatographed over silica gel with ethyl acetate/hexane (1:1)

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 0.202 g (0.002 mol) of 4-hydroxypiperidine and 0.55 g (0.0022 mol) of 3-bromobenzyl bromide were dissolved in 5 ml of dimethylformamide and stirred at room temperature for 2 hrs. The solvent was distilled off and the residue was taken up in dichloromethane and washed with saturated bicarbonate solution and sodium chloride solution. The organic phase was dried over sodium sulfate and concentrated. 0.52 g (96%) 1-(3-bromo-benzyl)-piperidin-4-ol was obtained as a brown oil. MS: me/e (% basic peak)=271, 269 (C12H16BrNO+, 26, 26.6), 270, 268 (25.5, 22), 171, 169 (47, 48.3), 114 (76.6), 100 (100). The solvent was distilled off washed with saturated bicarbonate solution and sodium chloride solution The organic phase was dried over sodium sulfate concentrated