1-(4-iodobutyl)-4-methoxybenzene

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

Conditions: temp:65.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a stirred solution of 4-(4-methoxyphenyl)butan-1-ol (9.37 g, 52 mmol, Aldrich) in dry toluene (185 mL) under an argon atmosphere was added triphenylphosphine (17.8 g, 67.6 mmol) and imidazole (10.6 g, 156 mmol). After ten minutes I2 (17.1 g, 67.6 mmol) was added. The reaction was then heated at 65 ° C. for 30 minutes. Upon cooling to room temperature the reaction was concentrated to 1/4 volume. The remaining solution was diluted with Et2O and washed with H2O and brine and dried (MgSO4). The solvent was removed and the resulting residue was dissolved in CH2Cl2 and applied to a flash chromatography column (silica). Elution with 2% EtOAc in hexane provided a colorless oil: 1H NMR (250 MHz, CDCl3) δ7.08 (d, J=8.7 Hz, 2H, phenyl), 6.82 (d, J=8.7 Hz, 2H, phenyl), 3.78 (s, 3H, OMe), 3.17 (t, J=7.4 Hz, 2H, I-CH2), 2.54 (t, J=7.2 Hz, 2H, benzylic), 1.85 (m, 2H, CH2), 160 (m, 2H, CH2). Upon cooling to room temperature the reaction was concentrated to 1/4 volume The remaining solution was diluted with Et2O washed with H2O and brine dried (MgSO4) The solvent was removed the resulting residue was dissolved in CH2Cl2 Elution with 2% EtOAc in hexane provided a colorless oil

Conditions: temp:65.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a stirred solution of 4-(4-methoxyphenyl)butan-1-ol (9.37 g, 52 mmol, Aldrich) in dry toluene (185 mL) under an argon atmosphere was added triphenylphosphine (17.8 g, 67.6 mmol) and imidazole (10.6 g, 156 mmol). After ten minutes I2 (17.1 g, 67.6 mmol) was added. The reaction was then heated at 65 ° C. for 30 minutes. Upon cooling to room temperature the reaction was concentrated to 1/4 volume. The remaining solution was diluted with Et2O and washed with H2O and brine and dried (MgSO4). The solvent was removed and the resulting residue was dissolved in CH2Cl2 and applied to a flash chromatography column (silica). Elution with 2% EtOAc in hexane provided a colorless oil: 1H NMR (250 MHz, CDCl3) δ7.08 (d, J=8.7 Hz, 2H, phenyl), 6.82 (d, J=8.7 Hz, 2H, phenyl), 3.78 (s, 3H, OMe), 3.17 (t, J=7.4 Hz, 2H, I-CH2), 2.54 (t, J=7.2 Hz, 2H, benzylic), 1.85 (m, 2H, CH2), 160 (m, 2H, CH2). Upon cooling to room temperature the reaction was concentrated to 1/4 volume The remaining solution was diluted with Et2O washed with H2O and brine dried (MgSO4) The solvent was removed the resulting residue was dissolved in CH2Cl2 Elution with 2% EtOAc in hexane provided a colorless oil

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

Procedure: b 12.4 ml (19.8 mmol) Of 1.6 M butyllithium in n-hexane was added dropwise at −78° C. to a solution of 1.94 g (2.80 ml, 19.8 mmol) trimethylsilylacetylene and 2.39 ml (19.8 mmol) DMPU in 30 ml THF. After stirring for 1 h at −78° C. a solution of 28.7 g (9.89 mmol) 1-(4-Iodo-butyl)-4-methoxy-benzene in 30 ml THF was added at −78° C. and stirring continued for 30 min. The reaction mixture was allowed to warm to r.t. overnight and then hydrolyzed by a saturated ammonium chloride solution. The water phase was extracted with ether and the combined organic phases were dried over sodium sulphate. Removal of solvents in vacuo gave 3.20 g yellow liquid, which still contained solvent and was used without further purification. was added at −78° C. The water phase was extracted with ether the combined organic phases were dried over sodium sulphate Removal of solvents in vacuo

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

Procedure: b 12.4 ml (19.8 mmol) Of 1.6 M butyllithium in n-hexane was added dropwise at −78° C. to a solution of 1.94 g (2.80 ml, 19.8 mmol) trimethylsilylacetylene and 2.39 ml (19.8 mmol) DMPU in 30 ml THF. After stirring for 1 h at −78° C. a solution of 28.7 g (9.89 mmol) 1-(4-Iodo-butyl)-4-methoxy-benzene in 30 ml THF was added at −78° C. and stirring continued for 30 min. The reaction mixture was allowed to warm to r.t. overnight and then hydrolyzed by a saturated ammonium chloride solution. The water phase was extracted with ether and the combined organic phases were dried over sodium sulphate. Removal of solvents in vacuo gave 3.20 g yellow liquid, which still contained solvent and was used without further purification. was added at −78° C. The water phase was extracted with ether the combined organic phases were dried over sodium sulphate Removal of solvents in vacuo

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

Procedure: A mixture consisting of 30.2 g (124 mmol) 1-(4-bromo-butyl)-4-methoxy-benzene, 19.2 g (128 mmol) sodium iodide and 508 ml acetone was heated to reflux temperature for 1 h. The resulting suspension was cooled to r.t. and the precipitated sodium bromide removed by filtration. The filtrate was stripped off the solvents by vacuum distillation and the residue distributed between water and diethyl ether. After drying of the organic phase over sodium sulphate, vacuum distillation gave 34.9 g (97%) of the title compound as slightly yellow liquid. was heated to reflux temperature for 1 h the precipitated sodium bromide removed by filtration by vacuum distillation After drying of the organic phase over sodium sulphate, vacuum distillation

Conditions: temp:65.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a stirred solution of 4-(4-methoxyphenyl)butan-1-ol (9.37 g, 52 mmol, Aldrich) in dry toluene (185 mL) under an argon atmosphere was added triphenylphosphine (17.8 g, 67.6 mmol) and imidazole (10.6 g, 156 mmol). After ten minutes I2 (17.1 g, 67.6 mmol) was added. The reaction was then heated at 65 ° C. for 30 minutes. Upon cooling to room temperature the reaction was concentrated to 1/4 volume. The remaining solution was diluted with Et2O and washed with H2O and brine and dried (MgSO4). The solvent was removed and the resulting residue was dissolved in CH2Cl2 and applied to a flash chromatography column (silica). Elution with 2% EtOAc in hexane provided a colorless oil: 1H NMR (250 MHz, CDCl3) δ7.08 (d, J=8.7 Hz, 2H, phenyl), 6.82 (d, J=8.7 Hz, 2H, phenyl), 3.78 (s, 3H, OMe), 3.17 (t, J=7.4 Hz, 2H, I-CH2), 2.54 (t, J=7.2 Hz, 2H, benzylic), 1.85 (m, 2H, CH2), 160 (m, 2H, CH2). Upon cooling to room temperature the reaction was concentrated to 1/4 volume The remaining solution was diluted with Et2O washed with H2O and brine dried (MgSO4) The solvent was removed the resulting residue was dissolved in CH2Cl2 Elution with 2% EtOAc in hexane provided a colorless oil

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

Procedure: 12.4 ml (19.8 mmol) of 1.6 M butyllithium in n-hexane was added dropwise at −78° C. to a solution of 1.94 g (2.80 ml, 19.8 mmol) trimethylsilylacetylene and 2.39 ml(19.8 mmol) DMPU in 30 ml THF. After stirring for 1 h at −78° C. a solution of 28.7 g (9.89 mmol) 1-(4-Iodo-butyl)-4-methoxy-benzene in ml THF was added at −78° C. and stirring continued for 30 min. The reaction mixture was allowed to warm to r.t. overnight and then hydrolyzed by a saturated ammonium chloride solution. The water phase was extracted with ether and the combined organic phases were dried over sodium sulphate. Removal of solvents in vacuo gave 3.20 g yellow liquid, which still contained solvent and was used without further purification. was added at −78° C. The water phase was extracted with ether the combined organic phases were dried over sodium sulphate Removal of solvents in vacuo

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

Procedure: A mixture consisting of 30.2 g (124 mmol) 1-(4-bromo-butyl)-4-methoxy-benzene, 19.2 g (128 mmol) sodium iodide and 508 ml acetone was heated to reflux temperature for 1 h. The resulting suspension was cooled to r.t. and the precipitated sodium bromide removed by filtration. The filtrate was stripped off the solvents by vacuum distillation and the residue distributed between water and diethyl ether. After drying of the organic phase over sodium sulphate, vacuum distillation gave 34.9 g (97%) of the title compound as slightly yellow coloured liquid. was heated to reflux temperature for 1 h the precipitated sodium bromide removed by filtration by vacuum distillation After drying of the organic phase over sodium sulphate, vacuum distillation

Conditions: temp:65.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a stirred solution of 4-(4-methoxyphenyl) butan-1-ol (9.37 g, 52 mmol, Aldrich) in dry toluene (185 mL) under an argon atmosphere was added triphenylphosphine (17.8 g, 67.6 mmol) and imidazole (10.6 g, 156 mmol). After ten minutes I2 (17.1 g, 67.6 mmol) was added. The reaction was then heated at 65° C. for 30 minutes. Upon cooling to room temperature the reaction was concentrated to 1/4 volume. The remaining solution was diluted with Et2O and washed with H2O and brine and dried (MgSO4). The solvent was removed and the resulting residue was dissolved in CH2Cl2 and applied to a flash chromatography column (silica). Elution with 2% EtOAc in hexane provided a colorless oil: 1H NMR (250 MHz, CDCl3) δ7.08 (d, J=8.7 Hz, 2H, phenyl), 6.82 (d, J=8.7 Hz, 2H, phenyl), 3.78 (s, 3H, OMe), 3.17 (t, J=7.4 Hz, 2H, I-CH2), 2.54 (t, J=7.2 Hz, 2H, benzylic), 1.85 (m, 2H, CH2), 1.60 (m, 2H, CH2). Upon cooling to room temperature the reaction was concentrated to 1/4 volume The remaining solution was diluted with Et2O washed with H2O and brine dried (MgSO4) The solvent was removed the resulting residue was dissolved in CH2Cl2 Elution with 2% EtOAc in hexane provided a colorless oil

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

Procedure: b 12.4 ml (19.8 mmol) Of 1.6 M butyllithium in n-hexane was added dropwise at −78° C. to a solution of 1.94 g (2.80 ml, 19.8 mmol) trimethylsilylacetylene and 2.39 ml (19.8 mmol) DMPU in 30 ml THF. After stirring for 1 h at −78° C. a solution of 28.7 g (9.89 mmol) 1-(4-Iodo-butyl)-4-methoxy-benzene in 30 ml THF was added at −78° C. and stirring continued for 30 min. The reaction mixture was allowed to warm to r.t. overnight and then hydrolyzed by a saturated ammonium chloride solution. The water phase was extracted with ether and the combined organic phases were dried over sodium sulphate. Removal of solvents in vacuo gave 3.20 g yellow liquid, which still contained solvent and was used without further purification. was added at −78° C. The water phase was extracted with ether the combined organic phases were dried over sodium sulphate Removal of solvents in vacuo

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

Procedure: A mixture consisting of 30.2 g (124 mmol) 1-(4-bromo-butyl)-4-methoxy-benzene, 19.2 g (128 mmol) sodium iodide and 508 ml acetone was heated to reflux temperature for 1 h. The resulting suspension was cooled to r.t. and the precipitated sodium bromide removed by filtration. The filtrate was stripped off the solvents by vacuum distillation and the residue distributed between water and diethyl ether. After drying of the organic phase over sodium sulphate, vacuum distillation gave 34.9 g (97%) of the title compound as slightly yellow liquid. was heated to reflux temperature for 1 h the precipitated sodium bromide removed by filtration by vacuum distillation After drying of the organic phase over sodium sulphate, vacuum distillation