4-(3-bromophenyl)butan-1-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:; See reaction.notes.procedure_details.

Procedure: To a solution of 1-bromo-3-(but-3-en-1-yl)benzene (CA46) (7.51 g, 35.6 mmol) in hexanes (80 mL) was added (1S,5S)-9-borabicyclo[3.3.1]nonane (0.5 M in tetrahydrofuran, 74.7 mL, 37.4 mmol). The reaction was allowed to stir at room temperature overnight. To the resulting clear solution sodium hydroxide (6.0 M, 5.93 mL, 35.6 mmol) was added dropwise. The reaction was placed in an ice water bath and hydrogen peroxide (13.8 mL, 135 mmol) was added. The resulting mixture was then heated to an internal temperature of 50° C. for overnight. The reaction mixture was cooled to room temperature. The biphasic solution was partitioned, and the organic layer was washed with sodium bisulfite, and brine solution. The combined aqueous layers were made basic with saturated sodium carbonate, and extracted with diethyl ether (2×100 mL). The combined organics were dried over magnesium sulfate, filtered, and concentrated. The liquid was loaded on to silica and purified by flash column chromatography using 0-40% ethyl acetate/hexanes as eluent providing the title compound as a clear liquid (7.50 g, 90%): 1H NMR (400 MHz, DMSO-d6) δ 7.40 (t, J=1.9 Hz, 1H), 7.37 (dt, J=7.6, 1.8 Hz, 1H), 7.28-7.17 (m, 2H), 4.39 (t, J=5.2 Hz, 1H), 3.40 (td, J=6.5, 5.2 Hz, 2H), 2.57 (t, J=7.6 Hz, 2H), 1.65-1.51 (m, 2H), 1.49-1.35 (m, 2H); EIMS m/z 228 ([M]+). The reaction was placed in an ice water bath The resulting mixture was then heated to an internal temperature of 50° C. for overnight The reaction mixture was cooled to room temperature The biphasic solution was partitioned the organic layer was washed with sodium bisulfite, and brine solution extracted with diethyl ether (2×100 mL) The combined organics were dried over magnesium sulfate filtered concentrated purified by flash column chromatography

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

Procedure: A solution of 4-(3-bromophenyl)butan-1-ol (5 g) (WO 0266422 A1) in dry DMF was treated with imidazole (1.8 g) and tert-butyldiphenylsilyl chloride (7.2 g) and stirred at room temperature for 16 h. The reaction mixture was partitioned between water and EtOAc. The organic phase was washed with 2M HCl, water, sat. NH4Cl(aq), water, dried (MgSO4) and concentrated in vacuo. The residue was purified by chromatography (SPE, Gradient between cyclohexane and cyclohexane-EtOAc (5:1) to give the title compound. LCMS RT=4.82 min The reaction mixture was partitioned between water and EtOAc The organic phase was washed with 2M HCl, water, sat. NH4Cl(aq), water dried (MgSO4) concentrated in vacuo The residue was purified by chromatography (SPE, Gradient between cyclohexane and cyclohexane-EtOAc (5:1)

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

Procedure: A stirred mixture of 4-(3-bromophenyl)butan-1-ol (18 g) and 1,6 dibromohexane (48 ml) in 50% aq. sodium hydroxide (500 ml) with tetrabutylammonium bromide (1.5 g) was stirred for 2 d at 20°. The mixture was poured into water (1000 ml) and extracted into ethyl acetate (3×500 ml). The combined extracts were washed with water (1000 ml), dried (Na2SO4). The solvent was removed in-vacuo and the residual oil was purified by flash chromatography (500 g) using dichloromethane as eluent, changing to light petroleum (40–60°)-diethyl ether (9:1) to give the title compound (18 g). LCMS RT=4.34 min. extracted into ethyl acetate (3×500 ml) The combined extracts were washed with water (1000 ml) dried (Na2SO4) The solvent was removed in-vacuo the residual oil was purified by flash chromatography (500 g)

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

Procedure: A solution of 4-(3-bromophenyl)but-3-yn-1-ol (21 g) in ethanol (1000 ml) was hydrogenated over platinum oxide (500 mg) for 4 h. The catalyst was removed by filtration and the filtrate was evaporated to give the title compound (18 g) tlc (SiO2) diethyl ether Rf=0.38. The catalyst was removed by filtration the filtrate was evaporated

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

Procedure: A solution of 4-(3-bromophenyl)but-3-yn-1-ol (21 g) in ethanol (1000 ml) was hydrogenated over platinum oxide (500 mg) for 4 h. The catalyst was removed by filtration and the filtrate was evaporated to give the title compound (18 g) tlc (SiO2) diethyl ether Rf=0.38. The catalyst was removed by filtration the filtrate was evaporated

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

Procedure: To a solution of 1-bromo-3-(but-3-en-1-yl)benzene (CA46) (7.51 g, 35.6 mmol) in hexanes (80 mL) was added (1S,5S)-9-borabicyclo[3.3.1]nonane (0.5 M in tetrahydrofuran, 74.7 mL, 37.4 mmol). The reaction was allowed to stir at room temperature overnight. To the resulting clear solution sodium hydroxide (6.0 M, 5.93 mL, 35.6 mmol) was added dropwise. The reaction was placed in an ice water bath and hydrogen peroxide (13.8 mL, 135 mmol) was added. The resulting mixture was then heated to an internal temperature of 50° C. for overnight. The reaction mixture was cooled to room temperature. The biphasic solution was partitioned, and the organic layer was washed with sodium bisulfite, and brine solution. The combined aqueous layers were made basic with saturated sodium carbonate, and extracted with diethyl ether (2×100 mL). The combined organics were dried over magnesium sulfate, filtered, and concentrated. The liquid was loaded on to silica and purified by flash column chromatography using 0-40% ethyl acetate/hexanes as eluent providing the title compound as a clear liquid (7.50 g, 90%): 1H NMR (400 MHz, DMSO-d6) δ 7.40 (t, J=1.9 Hz, 1H), 7.37 (dt, J=7.6, 1.8 Hz, 1H), 7.28-7.17 (m, 2H), 4.39 (t, J=5.2 Hz, 1H), 3.40 (td, J=6.5, 5.2 Hz, 2H), 2.57 (t, J=7.6 Hz, 2H), 1.65-1.51 (m, 2H), 1.49-1.35 (m, 2H); EIMS m/z 228 ([M]+). The reaction was placed in an ice water bath The resulting mixture was then heated to an internal temperature of 50° C. for overnight The reaction mixture was cooled to room temperature The biphasic solution was partitioned the organic layer was washed with sodium bisulfite, and brine solution extracted with diethyl ether (2×100 mL) The combined organics were dried over magnesium sulfate filtered concentrated purified by flash column chromatography

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

Procedure: To a solution of 1-bromo-3-(but-3-en-1-yl)benzene (CA46) (7.51 g, 35.6 mmol) in hexanes (80 mL) was added (1S,5S)-9-borabicyclo[3.3.1]nonane (0.5 M in tetrahydrofuran, 74.7 mL, 37.4 mmol). The reaction was allowed to stir at room temperature overnight. To the resulting clear solution sodium hydroxide (6.0 M, 5.93 mL, 35.6 mmol) was added dropwise. The reaction was placed in an ice water bath and hydrogen peroxide (13.8 mL, 135 mmol) was added. The resulting mixture was then heated to an internal temperature of 50° C. for overnight. The reaction mixture was cooled to room temperature. The biphasic solution was partitioned, and the organic layer was washed with sodium bisulfite, and brine solution. The combined aqueous layers were made basic with saturated sodium carbonate, and extracted with diethyl ether (2×100 mL). The combined organics were dried over magnesium sulfate, filtered, and concentrated. The liquid was loaded on to silica and purified by flash column chromatography using 0-40% ethyl acetate/hexanes as eluent providing the title compound as a clear liquid (7.50 g, 90%): 1H NMR (400 MHz, DMSO-d6) δ 7.40 (t, J=1.9 Hz, 1H), 7.37 (dt, J=7.6, 1.8 Hz, 1H), 7.28-7.17 (m, 2H), 4.39 (t, J=5.2 Hz, 1H), 3.40 (td, J=6.5, 5.2 Hz, 2H), 2.57 (t, J=7.6 Hz, 2H), 1.65-1.51 (m, 2H), 1.49-1.35 (m, 2H); EIMS m/z 228 ([M]+). The reaction was placed in an ice water bath The resulting mixture was then heated to an internal temperature of 50° C. for overnight The reaction mixture was cooled to room temperature The biphasic solution was partitioned the organic layer was washed with sodium bisulfite, and brine solution extracted with diethyl ether (2×100 mL) The combined organics were dried over magnesium sulfate filtered concentrated purified by flash column chromatography

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

Procedure: A cold (0° C.) solution of 4-(3-bromophenyl)butan-1-ol (1.08 g, 4.7 mmol) and p-toluenesulfonyl chloride (1.2 g, 6.3 mmol) in THF was treated slowly with triethyl amine (1.8 mL, 12.3 mmol), stirred at room temperature for 4 hours, poured into cold saturated aqueous NH4Cl and extracted with ether. The organic extracts were combined, washed with brine, dried over MgSO4 and concentrated in vacuo. Purification of the resultant residue on silica gel (ISCO) using (hexanes/EtOAC 9.5/0.5) as the eluting solvent afforded toluene-4-sulfonic acid 4-(3-bromophenyl)-butyl ester as a colorless oil (2.4 g, 76% yield). m/e (M+NH4)+ 400.1. 1H NMR (400 MHZ, DMSO-d6) δ ppm, 1.4-1.6 (m, 4 H), 2.4 (s, 3 H), 2.4-2.5 (m, 2 H), 4.0 (t, J=6.0 Hz, 2 H), 7.2 (t, J=7.8 Hz, 1 H), 7.3-7.3 (m, 1 H), 7.3-7.3 (m, J=8.0, 1.0 Hz, 1 H), 7.4-7.5 (m, J=8.6 Hz, 2 H), 7.7-7.8 (m, 2 H). extracted with ether washed with brine dried over MgSO4 concentrated in vacuo Purification of the resultant residue on silica gel (ISCO)