ethyl 4-(bromomethyl)benzoate

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:

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:

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:85.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a solution of spiro-[indene-1,4-piperidine]trifluoroacetate (4 g, 14 mmol) in ethanol (25 mL) is added ethyl 4-(bromomethyl)-benzoate (2.9 g, 12.6 mmol), followed by diisopropylethylamine (9.6 mL, 56 mmol). The reaction mixture is refluxed at 85° C. for overnight. The ethanol is removed under reduced pressure and the residue is partitioned between EtOAc (150 mL) and water (50 mL). The organic layer is washed with brine, dried over anhydrous sodium sulfate, filtered, and concentrated under reduced pressure. The residue is purified by silica gel chromatography, eluting with hexane:ethyl acetate (8.0:2.0) to give the title compound as brown solid (2.8 g, 60%). 1H NMR (400 MHz) 7.94 (d, J=8 Hz, 2H), 7.51 (d, J=8 Hz, 2H), 7.43 (d, J=7.2 Hz, 1H), 7.31 (d, J=7.2 Hz, 1H), 7.18 (m, J=7.2 Hz, 2H), 6.94 (d, J=5.6 Hz, 1H), 6.78 (d, J=5.6 Hz, 1H), 4.30 (q, J=7.2 Hz, 2H), 3.67 (s, 2H), 2.85 (d, J=11.6 Hz, 2H), 2.38 (t, J=11.6 Hz, 2H), 2.09 (t, J=10.4 Hz, 2H), 1.31 (t, J=7.2 Hz, 2H), 1.19 (d, J=12.8 Hz, 2H). The ethanol is removed under reduced pressure the residue is partitioned between EtOAc (150 mL) and water (50 mL) The organic layer is washed with brine dried over anhydrous sodium sulfate filtered concentrated under reduced pressure The residue is purified by silica gel chromatography eluting with hexane:ethyl acetate (8.0:2.0)

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

実験手順: To a solution of 3-chloro-4-(3,3,3-trifluoro-2-hydroxy-2-isoquinolin-5-yl-1-methyl -propyl)-phenol (40 mg) in N,N-dimethylacetamide (1 ml) were added ethyl-4-(bromomethyl)benzoate (18 mg) and cesium carbonate (23 mg). The mixture was stirred for 1 h at room temperature. Ice water was added and the mixture was extracted with EtOAc. The organic phase was washed with water and dried (MgSO4). The product was purified by chromatography (SiO2, cyclohexane/EtOAc 1:0=>0:1) to give the title compound (28 mg) as an off-white solid. MS (m/e)=544.2 [M+H+]. the mixture was extracted with EtOAc The organic phase was washed with water dried (MgSO4) The product was purified by chromatography (SiO2, cyclohexane/EtOAc 1:0=>0:1)

反応条件: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a suspension of 3-chloro-4-(3,3,3-trifluoro-2-hydroxy-1-methyl-2-quinolin-3-yl-propyl)-phenol (68 mg) in N,N-dimethylacetamide (1 ml) was added NaH (55% dispersion in mineral oil, 8.5 mg) at 0° C. The mixture was stirred at 0° C. for 1 h and at room temperature for 1 h. Ethyl-4-(bromomethyl)benzoate (48 mg) was added and the mixture was stirred overnight. Since the reaction was not finished, tetrabutylammonium iodide (6.5 mg) and NaH (55% dispersion in mineral oil, 8.5 mg) were added and the mixture was stirred overnight at room temperature and for 2 h at 50° C. Ethyl-4-(bromomethyl)benzoate (4 mg) was added and the mixture was stirred for 2 h at 50° C. The reaction mixture was poured into water and extracted with EtOAc. The organic phase was washed with water and brine, dried (MgSO4), filtered and concentrated. The product was purified by chromatography (SiO2, cyclohexane=>cyclohexane/EtOAc 1:1) to give the title compound (40 mg) as an orange solid. MS (m/e)=543.8 [M+H+]. the mixture was stirred overnight the mixture was stirred overnight at room temperature and for 2 h at 50° C the mixture was stirred for 2 h at 50° C extracted with EtOAc The organic phase was washed with water and brine dried (MgSO4) filtered concentrated The product was purified by chromatography (SiO2, cyclohexane=>cyclohexane/EtOAc 1:1)

反応条件: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: A solution of 3-chloro-4-[3,3,3-trifluoro-2-hydroxy-1-methyl-2-(2-methyl-pyridin-4-yl)-propyl]-phenol (800 mg) in DMF (10 mL) was added to a suspension of NaH (60% in mineral oil, 204 mg) in DMF (8 mL) over a period of 20 minutes. Stirring was continued for 30 minutes at r.t. The mixture was cooled to 0° C. and ethyl-4-(bromomethyl)-benzoate (591 mg, [CAS Reg. No. 26496-94-6]) dissolved in DMF (7 mL) was added dropwise over a period of 15 minutes. Stirring was continued for 1 hour at r.t. The reaction mixture was poured into ice/water and extracted two times with ethyl acetate. The combined organic layers were washed with brine, dried over Na2SO4, filtered and the solvent was evaporated. The residue was purified by flash chromatography (silica gel, gradient of heptane in ethyl acetate) to give the title compound as a colorless foam (625 mg, 53%). MS (m/e)=508.0 [MH+]. was added dropwise over a period of 15 minutes Stirring was continued for 1 hour at r.t extracted two times with ethyl acetate The combined organic layers were washed with brine dried over Na2SO4 filtered the solvent was evaporated The residue was purified by flash chromatography (silica gel, gradient of heptane in ethyl acetate)