3,5-二氯苯氧基丙酮

反应条件: temp:90.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a stirred solution of the title compound of Step A (0.33 g, 1.5 mmol) in pyridine (30 mL) under a nitrogen atmosphere was added the title compound of Step C (0.43 g, 1.5 mmol) and the resulting mixture was heated at 90 ° C. for 2 h. The reaction mixture was allowed to cool to room temperature overnight. The reaction mixture was concentrated under reduced pressure and the residue was diluted with 1 N aqueous HCl and was extracted three times with ethyl acetate. After drying (MgSO4), the combined organic extracts were concentrated under reduced pressure. Chromatography of the residue on silica gel (200 g) with 1:1 hexane: ethyl acetate afforded 0.14 g of the title compound of Step D, a compound of the invention, as an oil. 300 MHz 1H NMR CDCl3): δ 7.44 (m,3H), 7.23 (m,1H), 6.96 (m,1H), 6.81 (m,2H), 5.12 (q,2H), 4.44 (s,2H), 3.9 (s,3H), 3.43 (s,3H), 1.89 (s,3H). to cool to room temperature overnight The reaction mixture was concentrated under reduced pressure the residue was diluted with 1 N aqueous HCl was extracted three times with ethyl acetate After drying (MgSO4) the combined organic extracts were concentrated under reduced pressure

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

实验步骤: To a stirred solution of 3,5-dichlorophenol (0.49 g, 3 mmol) in acetone (10 mL) under a nitrogen atmosphere was added potassium carbonate (0.42 g, 3 mmol). In a separate flask, chloroacetone (0.34 mL, 4.2 mmol) and potassium iodide (0.02 g, 0.12 mmol) were dissolved in acetone (15 mL), heated at reflux for 10 min and then allowed to cool to room temperature. The chloroacetone solution was then added to the dichlorophenol solution dropwise via an addition funnel. The resulting mixture was stirred at room temperature overnight. The resulting solids were filtered off and the filtrate was concentrated under reduced pressure to yield the title compound of Step A (0.65 g) as a semisolid. 400 MHz 1H NMR (CDCl3): δ 7.01 (t,1H), 6.8 (d,2H), 4.5 (s,2H), 2.3 (s,3H). This material was used in Step D without further characterization. heated at reflux for 10 min The resulting solids were filtered off the filtrate was concentrated under reduced pressure

反应条件: temp:90.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a stirred solution of the title compound of Step A (0.33 g, 1.5 mmol) in pyridine (30 mL) under a nitrogen atmosphere was added the title compound of Step C (0.43 g, 1.5 mmol) and the resulting mixture was heated at 90 ° C. for 2 h. The reaction mixture was allowed to cool to room temperature overnight. The reaction mixture was concentrated under reduced pressure and the residue was diluted with 1 N aqueous HCl and was extracted three times with ethyl acetate. After drying (MgSO4), the combined organic extracts were concentrated under reduced pressure. Chromatography of the residue on silica gel (200 g) with 1:1 hexane: ethyl acetate afforded 0.14 g of the title compound of Step D, a compound of the invention, as an oil. 300 MHz 1H NMR CDCl3): δ 7.44 (m,3H), 7.23 (m,1H), 6.96 (m,1H), 6.81 (m,2H), 5.12 (q,2H), 4.44 (s,2H), 3.9 (s,3H), 3.43 (s,3H), 1.89 (s,3H). to cool to room temperature overnight The reaction mixture was concentrated under reduced pressure the residue was diluted with 1 N aqueous HCl was extracted three times with ethyl acetate After drying (MgSO4) the combined organic extracts were concentrated under reduced pressure

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

实验步骤: To a stirred solution of 3,5-dichlorophenol (0.49 g, 3 mmol) in acetone (10 mL) under a nitrogen atmosphere was added potassium carbonate (0.42 g, 3 mmol). In a separate flask, chloroacetone (0.34 mL, 4.2 mmol) and potassium iodide (0.02 g, 0.12 mmol) were dissolved in acetone (15 mL), heated at reflux for 10 min and then allowed to cool to room temperature. The chloroacetone solution was then added to the dichlorophenol solution dropwise via an addition funnel. The resulting mixture was stirred at room temperature overnight. The resulting solids were filtered off and the filtrate was concentrated under reduced pressure to yield the title compound of Step A (0.65 g) as a semisolid. 400 MHz 1H NMR (CDCl3): δ 7.01 (t,1H), 6.8 (d,2H), 4.5 (s,2H), 2.3 (s,3H). This material was used in Step D without further characterization. heated at reflux for 10 min The resulting solids were filtered off the filtrate was concentrated under reduced pressure