4-正庚基溴苯

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A solution of 48 mmol of 1-bromo-4-heptylbenzene in 155 ml of toluene is admixed with 48 mmol of 2-fluoro-6-(4-nonylphenyl)pyridine-3-boronic acid, 77 ml of ethanol, a solution of 96 mmol of sodium carbonate in 77 ml of water and 0.5 mmol of tetrakis(triphenylphosphine)palladium(0) at room temperature. The mixture is heated at the boil for 7 h. After cooling, the phases are separated, the aqueous phase is extracted with tert-butyl methyl ether and the combined organic phases are washed with water and saturated sodium chloride solution and dried with sodium sulfate. The solvents are then removed under reduced pressure and the raw product is purified by column chromatography over silica gel 60 using n-heptane as eluent and recrystallization from acetone, giving 8.9 g (39%) of 2-fluoro-3-(4-heptylphenyl)-6-(4-nonylphenyl)pyridine; X 42 S3 56 SC 136.1 S2 136.7 N 137 I. at room temperature The mixture is heated at the boil for 7 h After cooling the phases are separated the aqueous phase is extracted with tert-butyl methyl ether the combined organic phases are washed with water and saturated sodium chloride solution dried with sodium sulfate The solvents are then removed under reduced pressure the raw product is purified by column chromatography over silica gel 60 using n-heptane as eluent recrystallization from acetone

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A solution of 48 mmol of 1-bromo-4-heptylbenzene in 155 ml of toluene is admixed with 48 mmol of 2-fluoro-6-(4-nonylphenyl)pyridine-3-boronic acid, 77 ml of ethanol, a solution of 96 mmol of sodium carbonate in 77 ml of water and 0.5 mmol of tetrakis(triphenylphosphine)palladium(0) at room temperature. The mixture is heated at the boil for 7 h. After cooling, the phases are separated, the aqueous phase is extracted with tert-butyl methyl ether and the combined organic phases are washed with water and saturated sodium chloride solution and dried with sodium sulfate. The solvents are then removed under reduced pressure and the raw product is purified by column chromatography over silica gel 60 using n-heptane as eluent and recrystallization from acetone, giving 8.9 g (39%) of 2-fluoro-3-(4-heptylphenyl)-6-(4-nonylphenyl)pyridine; X 42 S3 56 SC 136.1 S2 136.7 N 137 I. at room temperature The mixture is heated at the boil for 7 h After cooling the phases are separated the aqueous phase is extracted with tert-butyl methyl ether the combined organic phases are washed with water and saturated sodium chloride solution dried with sodium sulfate The solvents are then removed under reduced pressure the raw product is purified by column chromatography over silica gel 60 using n-heptane as eluent recrystallization from acetone

反应条件: temp:-78.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Compound 2 (37 g, 0.079 mol) was dissolved in 200 mL of anhydrous THF and cooled to −78° C. To this solution was added n-BuLi (2.5 M in hexane, 94 mL, 0.24 mol) slowly to maintain the temperature below −60° C. After addition, the orange-yellow solution was stirred at −78° C. for an hour. Compound 1 (60.2 g, 0.24 mol) was dissolved in 100 mL of anhydrous THF and added dropwise to the above cooled solution. The reaction was slowly warmed up to room temperature and stirred at room temperature overnight. The reaction was quenched with HI aqueous solution (47% in water, 143 mL, 0.79 mol) and TBDMS group was also de-protected. The deep brown reaction was heated to reflux for 10 min. and most of the solvent was removed under reduced pressure. The reaction mixture was then extracted with methylene chloride three times. The combined organic phase was washed with saturated sodium metabisulfate solution, water, and brine, and dried over MgSO4. The crude product was obtained as brown viscous oil and was purified by column chromatography on silica gel with 10/90 ether/hexane as an eluent. The pure product was obtained as 22.4 g light yellow brown solid at 51% yield. 1H NMR (CDCl3) δ (ppm): 0.91 (t, J=7.0 Hz, 6H), 1.26-1.43 (m, 8H), 1.71-1.81 (m, 2H), 2.73 (t, J=7.8 Hz, 2H), 5.21 (s, br, 2H, OH), 6.89 (d, J=2.3 Hz, 2H), 6.96 (dd, J1=9.5 Hz, J2=2.5 Hz, 2H), 7.32 (d, J=8.6 Hz, 4H, phenyl), 7.35 (d, J=8.6 Hz, 4H, phenyl), 7.57 (d, J=9.4 Hz, 2H). 13C NMR (CDCl3): 14.16, 22.72, 29.26, 29.52, 31.60, 31.86, 35.90, 106.84, 118.58, 127.07, 128.46, 128.98, 129.64, 131.04, 134.94, 136.30, 142.10, 151.69. Mp 162-164° C. FD-MS: m/z 558 (M+). to maintain the temperature below −60° C After addition added dropwise to the above cooled solution The reaction was slowly warmed up to room temperature stirred at room temperature overnight The deep brown reaction was heated to reflux for 10 min. and most of the solvent was removed under reduced pressure The reaction mixture was then extracted with methylene chloride three times The combined organic phase was washed with saturated sodium metabisulfate solution, water, and brine dried over MgSO4 The crude product was obtained as brown viscous oil was purified by column chromatography on silica gel with 10/90 ether/hexane as an eluent

反应条件: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Phenylheptane (100 g, 0.57 mol) was dissolved in 900 mL of chloroform, and ferric chloride (1.41 g, 9 mmol) was added. The mixture was cooled to 0° C. and bromine (32 mL, 0.62 mmol) was added dropwise through an additional funnel. The reaction was kept in dark to prevent the bromination of the aliphatic side chain. After stirring at room temperature overnight, the reaction was quenched with 1N KOH. After extraction, the organic phase was washed with water and dried over MgSO4. The crude product was a brown oil and was purified by column chromatography on silica gel using heptane as an eluent to give 60 g of pure product as light yellow oil at 42% yield. 1H NMR (CDCl3) δ (ppm): 0.88 (t, J=6.9 Hz, 3H), 1.26-1.31 (m, 8H), 1.54-1.59 (m, 2H), 2.54 (t, J=7.8 Hz, 2H), 7.04 (d, J=8.2 Hz, 2H), 7.38 (d, J=8.2 Hz, 2H). FD-MS: m/z 255 (M+). the reaction was quenched with 1N KOH After extraction the organic phase was washed with water dried over MgSO4 was purified by column chromatography on silica gel

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A solution of 48 mmol of 1-bromo-4-heptylbenzene in 155 ml of toluene is admixed with 48 mmol of 2-fluoro-6-(4-nonylphenyl)pyridine-3-boronic acid, 77 ml of ethanol, a solution of 96 mmol of sodium carbonate in 77 ml of water and 0.5 mmol of tetrakis(triphenylphosphine)palladium(0) at room temperature. The mixture is heated at the boil for 7 h. After cooling, the phases are separated, the aqueous phase is extracted with tert-butyl methyl ether and the combined organic phases are washed with water and saturated sodium chloride solution and dried with sodium sulfate. The solvents are then removed under reduced pressure and the raw product is purified by column chromatography over silica gel 60 using n-heptane as eluent and recrystallization from acetone, giving 8.9 g (39%) of 2-fluoro-3-(4-heptylphenyl)-6-(4-nonylphenyl)pyridine; X 42 S3 56 SC 136.1 S2 136.7 N 137 I. at room temperature The mixture is heated at the boil for 7 h After cooling the phases are separated the aqueous phase is extracted with tert-butyl methyl ether the combined organic phases are washed with water and saturated sodium chloride solution dried with sodium sulfate The solvents are then removed under reduced pressure the raw product is purified by column chromatography over silica gel 60 using n-heptane as eluent recrystallization from acetone