1-bromo-3-(bromomethyl)-5-fluorobenzene

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: To a solution of 3-bromo-5-fluorobenzyl bromide (3.2 g, 0.0112 mole) in 1,4-dioxane (20 mL) was added a solution of KCN (0.82 g, 0.013 mole) in H2O (5 mL) and EtOH (5 mL), refluxed for 2 hours. Extracted with ether, washed with brine, dried over MgSO4, concentrated. Column chromatography using hexane/ethyl acetate (19:1). 3-Bromo-5-fluorophenylacetonitrile obtained was a colorless oil: 1H NMR (DMSO-d6) d 4.15 ( s, 2H), 7.29( d, 1H, J=9.37 Hz), 7.47(s, 1H), 7.55(d, 1H, J=8.45 Hz); MS( EI) M+m/z 213; Anal. Calc. For C8H5BrFN: C, 44.89, H, 2.35, N,6.54. Found: C, 44.88, H, 2.32, N, 6.46. refluxed for 2 hours Extracted with ether washed with brine dried over MgSO4 concentrated

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

Procedure: To a solution of 3-Bromo-5-fluorobenzyl alcohol (2.3 g, 0.011 mole) in CH2Cl2 (15 mL) was added 12.4 mL of 1.0M PBr3 (3.33 g, 0.0123 mole) in CH2Cl2, stirred for 3 hr, diluted with ether (100 mL), washed with H2O (50 ml,3×), dried over MgSO4, concentrated. Purified by column chromatography using 1:9 ethyl acetate/hexane as an eluant solvent system. 3-Bromo-5-fluorobenzyl bromide as a white crystalline material was obtained, mp 41-43° C. 1H NMR (DMSO-d6) □4.69 (s, 2H), 7.52( d, 1H, J=1.76 Hz) 7.54(d, 1H, J=1.91 Hz), 7.56( s, 1H); MS( EI): M+. m/z 266; Anal. Calc. For C7H5Br2F: C, 31.38, H, 1.88. Found: C, 31.75, H, 1.78. washed with H2O (50 ml,3×) dried over MgSO4 concentrated Purified by column chromatography

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 1-Bromo-3-(bromomethyl)-5-fluorobenzene (0.8 g, 3.0 mmol) and tert-butyl 4-(hydroxymethyl)-4-phenylpiperidine-1-carboxylate (0.72 g, 2.5 mmol) were combined in dimethylformamide (8 mL) and cooled to 0° C. The reaction was treated with sodium hydride (120 mg, 4.98 mmol), stirred at 0° C. for 1 h, and at room temperature for 30 min. The reaction mixture was diluted with water and extracted with ethyl acetate (2×). The organic layers were pooled together, washed with brine (2×), dried over sodium sulfate, and concentrated. Column chromatography on silica gel (20% ethyl acetate/hexanes) gave 1.2 g (84%). 1H-NMR (CDCl3, 500 MHz) δ 7.34-7.38 (m, 4H), 7.24-7.25 (m, 1H), 7.08-7.10 (m, 1H), 7.01 (s, 1H), 6.70-6.72 (m, 1H), 4.29 (s, 2H), 3.74-3.77 (m, 2H), 3.38 (s, 2H), 3.00-3.06 (m, 2H), 2.17-2.20 (m, 2H), 1.84-1.90 (m, 2H), 1.44 (s, 9H). Mass spec.: 501.32 (MNa)+. at room temperature for 30 min extracted with ethyl acetate (2×) washed with brine (2×) dried over sodium sulfate concentrated Column chromatography on silica gel (20% ethyl acetate/hexanes) gave 1.2 g (84%)

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: (3-Bromo-5-fluorophenyl)methanol (0.78 g, 3.8 mmol) and triphenylphosphine (2.0 g, 7.6 mmol) were combined in tetrahydrofuran (20 mL) and cooled to 0° C. N-Bromosuccinimide (1.4 g, 7.98 mmol) was introduced in portions and the reaction allowed to warm to room temperature. After 16 h, the reaction mixture was diluted with ethyl acetate, washed with concentrated sodium bicarbonate (2×), then brine (2×), dried over sodium sulfate, and concentrated. Column chromatography on silica gel (5% ethyl acetate/hexanes) gave 0.8 g (79%) as a white powder. 1H-NMR (CDCl3, 300 MHz) 7.30 (s, 1H), 7.14-7.18 (m, 1H), 7.01-7.05 (m, 1H), 4.36 (s, 2H). to warm to room temperature washed with concentrated sodium bicarbonate (2×) brine (2×), dried over sodium sulfate concentrated Column chromatography on silica gel (5% ethyl acetate/hexanes) gave 0.8 g (79%) as a white powder

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

Procedure: 219 mg (0.71 mmol) of the compound from Example 5A and 191 mg (0.71 mmol) of 1-bromo-3-(bromomethyl)-5-fluorobenzene were reacted analogously to the preparation of Example 101A. This gave 181 mg (51% of theory) of the target compound.

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

Procedure: To a solution of 3-bromo-5-fluorobenzyl bromide (3.2 g, 0.0112 mole) in 1,4-dioxane (20 mL) was added a solution of KCN (0.82 g, 0.013 mole) in H2O (5 mL) and EtOH (5 mL), refluxed for 2 hours. Extracted with ether, washed with brine, dried over MgSO4, concentrated. Column chromatography using hexane/ethyl acetate (19:1). 3-Bromo-5-fluorophenylacetonitrile obtained was a colorless oil: 1H NMR (DMSO-d6) d 4.15 ( s, 2H), 7.29( d, 1H, J=9.37 Hz), 7.47(s, 1H), 7.55(d, 1H, J=8.45 Hz); MS( EI) M+m/z 213; Anal. Calc. For C8H5BrFN: C, 44.89, H, 2.35, N,6.54. Found: C, 44.88, H, 2.32, N, 6.46. refluxed for 2 hours Extracted with ether washed with brine dried over MgSO4 concentrated

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

Procedure: To a solution of 3-bromo-5-fluorobenzyl bromide (3.2 g, 0.0112 mole) in 1,4-dioxane (20 mL) was added a solution of KCN (0.82 g, 0.013 mole) in H2O (5 mL) and EtOH (5 mL), refluxed for 2 hours. Extracted with ether, washed with brine, dried over MgSO4, concentrated. Column chromatography using hexane/ethyl acetate (19:1). 3-Bromo-5-fluorophenylacetonitrile obtained was a colorless oil: 1H NMR (DMSO-d6) d 4.15 ( s, 2H), 7.29( d, 1H, J=9.37 Hz), 7.47(s, 1H), 7.55(d, 1H, J=8.45 Hz); MS( EI) M+m/z 213; Anal. Calc. For C8H5BrFN: C, 44.89, H, 2.35, N,6.54. Found: C, 44.88, H, 2.32, N, 6.46. refluxed for 2 hours Extracted with ether washed with brine dried over MgSO4 concentrated

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

Procedure: To a solution of 3-Bromo-5-fluorobenzyl alcohol (2.3 g, 0.011 mole) in CH2Cl2 (15 mL) was added 12.4 mL of 1.0M PBr3 (3.33 g, 0.0123 mole) in CH2Cl2, stirred for 3 hr, diluted with ether (100 mL), washed with H2O (50 ml,3×), dried over MgSO4, concentrated. Purified by column chromatography using 1:9 ethyl acetate/hexane as an eluant solvent system. 3-Bromo-5-fluorobenzyl bromide as a white crystalline material was obtained, mp 41-43° C. 1H NMR (DMSO-d6) □4.69 (s, 2H), 7.52( d, 1H, J=1.76 Hz) 7.54(d, 1H, J=1.91 Hz), 7.56( s, 1H); MS( EI): M+. m/z 266; Anal. Calc. For C7H5Br2F: C, 31.38, H, 1.88. Found: C, 31.75, H, 1.78. washed with H2O (50 ml,3×) dried over MgSO4 concentrated Purified by column chromatography

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 1-Bromo-3-(bromomethyl)-5-fluorobenzene (0.8 g, 3.0 mmol) and tert-butyl 4-(hydroxymethyl)-4-phenylpiperidine-1-carboxylate (0.72 g, 2.5 mmol) were combined in dimethylformamide (8 mL) and cooled to 0° C. The reaction was treated with sodium hydride (120 mg, 4.98 mmol), stirred at 0° C. for 1 h, and at room temperature for 30 min. The reaction mixture was diluted with water and extracted with ethyl acetate (2×). The organic layers were pooled together, washed with brine (2×), dried over sodium sulfate, and concentrated. Column chromatography on silica gel (20% ethyl acetate/hexanes) gave 1.2 g (84%). 1H-NMR (CDCl3, 500 MHz) δ 7.34-7.38 (m, 4H), 7.24-7.25 (m, 1H), 7.08-7.10 (m, 1H), 7.01 (s, 1H), 6.70-6.72 (m, 1H), 4.29 (s, 2H), 3.74-3.77 (m, 2H), 3.38 (s, 2H), 3.00-3.06 (m, 2H), 2.17-2.20 (m, 2H), 1.84-1.90 (m, 2H), 1.44 (s, 9H). Mass spec.: 501.32 (MNa)+. at room temperature for 30 min extracted with ethyl acetate (2×) washed with brine (2×) dried over sodium sulfate concentrated Column chromatography on silica gel (20% ethyl acetate/hexanes) gave 1.2 g (84%)

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: (3-Bromo-5-fluorophenyl)methanol (0.78 g, 3.8 mmol) and triphenylphosphine (2.0 g, 7.6 mmol) were combined in tetrahydrofuran (20 mL) and cooled to 0° C. N-Bromosuccinimide (1.4 g, 7.98 mmol) was introduced in portions and the reaction allowed to warm to room temperature. After 16 h, the reaction mixture was diluted with ethyl acetate, washed with concentrated sodium bicarbonate (2×), then brine (2×), dried over sodium sulfate, and concentrated. Column chromatography on silica gel (5% ethyl acetate/hexanes) gave 0.8 g (79%) as a white powder. 1H-NMR (CDCl3, 300 MHz) 7.30 (s, 1H), 7.14-7.18 (m, 1H), 7.01-7.05 (m, 1H), 4.36 (s, 2H). to warm to room temperature washed with concentrated sodium bicarbonate (2×) brine (2×), dried over sodium sulfate concentrated Column chromatography on silica gel (5% ethyl acetate/hexanes) gave 0.8 g (79%) as a white powder