METHYL 4-BENZOYLBUTYRATE

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: A 2.0 M tetrahydrofuran solution of lithium aluminum hydride (2.80 mL, 5.60 mmol) was added to a tetrahydrofuran solution (10 mL) of methyl 5-oxo-5-phenylpentanoate (500 mg, 2.78 mmol) at 0° C. The reaction mixture was stirred for one hour and quenched with the sequential addition of water (0.2 mL), 10% sodium hydroxide solution (0.2 mL), and water (0.6 mL). It was concentrated in vacuo to give the title compound as a colorless oil. 1H NMR (500 MHz, CDCl3) δ 1.32-1.42 (m, 1H), 1.46-1.55 (m, 1H), 1.56-1.64 (m, 2H), 1.70-1.78 (m, 1H), 1.78-1.88 (m, 1H), 3.63 (t, J=6.6 Hz, 2H), 4.68 (dd, J=5.7, 7.8 Hz, 1H), 7.25-7.30 (m, 1H), 7.32-7.35 (m, 4H). quenched with the sequential addition of water (0.2 mL), 10% sodium hydroxide solution (0.2 mL), and water (0.6 mL) It was concentrated in vacuo

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: A 2.0 M tetrahydrofuran solution of lithium aluminum hydride (2.80 mL, 5.60 mmol) was added to a tetrahydrofuran solution (10 mL) of methyl 5-oxo-5-phenylpentanoate (500 mg, 2.78 mmol) at 0° C. The reaction mixture was stirred for one hour and quenched with the sequential addition of water (0.2 mL), 10% sodium hydroxide solution (0.2 mL), and water (0.6 mL). It was concentrated in vacuo to give the title compound as a colorless oil. 1H NMR (500 MHz, CDCl3) δ 1.32-1.42 (m, 1H), 1.46-1.55 (m, 1H), 1.56-1.64 (m, 2H), 1.70-1.78 (m, 1H), 1.78-1.88 (m, 1H), 3.63 (t, J=6.6 Hz, 2H), 4.68 (dd, J=5.7, 7.8 Hz, 1H), 7.25-7.30 (m, 1H), 7.32-7.35 (m, 4H). quenched with the sequential addition of water (0.2 mL), 10% sodium hydroxide solution (0.2 mL), and water (0.6 mL) It was concentrated in vacuo

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: A 2.0 M tetrahydrofuran solution of lithium aluminum hydride (2.80 mL, 5.60 mmol) was added to a tetrahydrofuran solution (10 mL) of methyl 5-oxo-5-phenylpentanoate (500 mg, 2.78 mmol) at 0° C. The reaction mixture was stirred for one hour and quenched with the sequential addition of water (0.2 mL), 10% sodium hydroxide solution (0.2 mL), and water (0.6 mL). It was concentrated in vacuo to give the title compound as a colorless oil. 1H NMR (500 MHz, CDCl3) δ 1.32-1.42 (m, 1H), 1.46-1.55 (m, 1H), 1.56-1.64 (m, 2H), 1.70-1.78 (m, 1H), 1.78-1.88 (m, 1H), 3.63 (t, J=6.6 Hz, 2H), 4.68 (dd, J=5.7, 7.8 Hz, 1H), 7.25-7.30 (m, 1H), 7.32-7.35 (m, 4H). quenched with the sequential addition of water (0.2 mL), 10% sodium hydroxide solution (0.2 mL), and water (0.6 mL) It was concentrated in vacuo

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: A solution of 50.0 g of 5-oxo-5-phenylpentanoic acid (260 mmol) (origin: Fluka) and 70 ml of conc. H2SO4 in 1400 ml of methanol was heated under reflux for 1 h. The reaction mixture was cooled down to room temperature and added to 2 l of water and extracted with ether (2×). The organic phase was washed with water (1×), an aq. solution of NaHCO3 (10%, 2×), again with water (2×), dried (Na2SO4) and concentrated to give 47.9 g (90%) of a slightly yellow oil, which slowly crystallizes at 4° C. under reflux for 1 h extracted with ether (2×) The organic phase was washed with water (1×) an aq. solution of NaHCO3 (10%, 2×), again with water (2×), dried (Na2SO4) concentrated to give 47.9 g (90%) of a slightly yellow oil, which slowly crystallizes at 4° C.

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: Precursors suitable for preparation of fullerene derivatives were prepared. First, methyl 4-benzoylbutyrate was prepared as follows. A solution of 4-benzoylbutyric acid (11.9 g, 0.0619 mol) in MeOH (250 ml) with a catalytic amount of sulfuric acid (96%, 6 drops) was refluxed for 5 hours. Solvent was removed and 50 ml water was added. The reaction product was extracted with dichloromethane to provide an organic layer. The organic layer was separated, dried over MgSO4 and passed through a plug of silica, which was rinsed with 2% acetone in dichloromethane. Solvent was removed to afford the methyl ester as light-yellowish oil (12.57 g, 99%). were prepared Solvent was removed 50 ml water was added The reaction product was extracted with dichloromethane to provide an organic layer The organic layer was separated dried over MgSO4 was rinsed with 2% acetone in dichloromethane Solvent was removed

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a solution of methyl 5-oxo-5-phenylpentanoate (16.1 g) in diethyl ether (100 ml) was added bromine (4.01 ml) at room temperature over 30 min. and the mixture was stirred for 30 min. An aqueous sodium sulfite solution was added to the reaction mixture and the mixture was extracted with diethyl ether. The diethyl ether layer was washed with saturated brine, dried (MgSO4) and concentrated to give methyl 4-bromo-5-oxo-5-phenylpentanoate (22.1 g, yield 100%) as a pale-yellow oil. the mixture was extracted with diethyl ether The diethyl ether layer was washed with saturated brine dried (MgSO4) concentrated

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: A 2.0 M tetrahydrofuran solution of lithium aluminum hydride (2.80 mL, 5.60 mmol) was added to a tetrahydrofuran solution (10 mL) of methyl 5-oxo-5-phenylpentanoate (500 mg, 2.78 mmol) at 0° C. The reaction mixture was stirred for one hour and quenched with the sequential addition of water (0.2 mL), 10% sodium hydroxide solution (0.2 mL), and water (0.6 mL). It was concentrated in vacuo to give the title compound as a colorless oil. 1H NMR (500 MHz, CDCl3) δ 1.32-1.42 (m, 1H), 1.46-1.55 (m, 1H), 1.56-1.64 (m, 2H), 1.70-1.78 (m, 1H), 1.78-1.88 (m, 1H), 3.63 (t, J=6.6 Hz, 2H), 4.68 (dd, J=5.7, 7.8 Hz, 1H), 7.25-7.30 (m, 1H), 7.32-7.35 (m, 4H). quenched with the sequential addition of water (0.2 mL), 10% sodium hydroxide solution (0.2 mL), and water (0.6 mL) It was concentrated in vacuo

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: A 2.0 M tetrahydrofuran solution of lithium aluminum hydride (2.80 mL, 5.60 mmol) was added to a tetrahydrofuran solution (10 mL) of methyl 5-oxo-5-phenylpentanoate (500 mg, 2.78 mmol) at 0° C. The reaction mixture was stirred for one hour and quenched with the sequential addition of water (0.2 mL), 10% sodium hydroxide solution (0.2 mL), and water (0.6 mL). It was concentrated in vacuo to give the title compound as a colorless oil. 1H NMR (500 MHz, CDCl3) δ 1.32-1.42 (m, 1H), 1.46-1.55 (m, 1H), 1.56-1.64 (m, 2H), 1.70-1.78 (m, 1H), 1.78-1.88 (m, 1H), 3.63 (t, J=6.6 Hz, 2H), 4.68 (dd, J=5.7, 7.8 Hz, 1H), 7.25-7.30 (m, 1H), 7.32-7.35 (m, 4H). quenched with the sequential addition of water (0.2 mL), 10% sodium hydroxide solution (0.2 mL), and water (0.6 mL) It was concentrated in vacuo

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: A solution of 50.0 g of 5-oxo-5-phenylpentanoic acid (260 mmol) (origin: Fluka) and 70 ml of conc. H2SO4 in 1400 ml of methanol was heated under reflux for 1 h. The reaction mixture was cooled down to room temperature and added to 2 l of water and extracted with ether (2×). The organic phase was washed with water (1×), an aq. solution of NaHCO3 (10%, 2×), again with water (2×), dried (Na2SO4) and concentrated to give 47.9 g (90%) of a slightly yellow oil, which slowly crystallizes at 4° C. under reflux for 1 h extracted with ether (2×) The organic phase was washed with water (1×) an aq. solution of NaHCO3 (10%, 2×), again with water (2×), dried (Na2SO4) concentrated to give 47.9 g (90%) of a slightly yellow oil, which slowly crystallizes at 4° C.