2-bromo-1-(cyclopropylmethoxy)-4-fluorobenzene

反応条件: temp:-40.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a solution of Example 274a (0.1 g, 0.408 mmol) in tetrahydrofuran (2 mL) at −20° C. was added nBuLi (0.180 mL of a 2.5 M solution in hexanes, 0.449 mmol). The reaction mixture was stirred for 2 hours, then cooled to −40° C. 2-Isopropoxy-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (0.092 mL, 0.449 mmol) was added dropwise. The reaction mixture was stirred for 30 minutes. The reaction mixture was quenched with 1M citric acid at 0° C. The mixture was stirred at ambient temperature for 1 hour and then extracted with ethyl acetate. The layers were separated, and the organic layer was dried over anhydrous sodium sulfate, filtered, and concentrated. The crude material was purified by flash chromatography (silica gel, 10-33% ethyl acetate/hexanes gradient) to provide the title compound (23 mg, 20% yield). The reaction mixture was stirred for 30 minutes The reaction mixture was quenched with 1M citric acid at 0° C The mixture was stirred at ambient temperature for 1 hour extracted with ethyl acetate The layers were separated the organic layer was dried over anhydrous sodium sulfate filtered concentrated The crude material was purified by flash chromatography (silica gel, 10-33% ethyl acetate/hexanes gradient)

反応条件: temp:-40.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a solution of Example 274a (0.1 g, 0.408 mmol) in tetrahydrofuran (2 mL) at −20° C. was added nBuLi (0.180 mL of a 2.5 M solution in hexanes, 0.449 mmol). The reaction mixture was stirred for 2 hours, then cooled to −40° C. 2-Isopropoxy-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (0.092 mL, 0.449 mmol) was added dropwise. The reaction mixture was stirred for 30 minutes. The reaction mixture was quenched with 1M citric acid at 0° C. The mixture was stirred at ambient temperature for 1 hour and then extracted with ethyl acetate. The layers were separated, and the organic layer was dried over anhydrous sodium sulfate, filtered, and concentrated. The crude material was purified by flash chromatography (silica gel, 10-33% ethyl acetate/hexanes gradient) to provide the title compound (23 mg, 20% yield). The reaction mixture was stirred for 30 minutes The reaction mixture was quenched with 1M citric acid at 0° C The mixture was stirred at ambient temperature for 1 hour extracted with ethyl acetate The layers were separated the organic layer was dried over anhydrous sodium sulfate filtered concentrated The crude material was purified by flash chromatography (silica gel, 10-33% ethyl acetate/hexanes gradient)

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

実験手順: To a solution of 2-bromo-4-fluorophenol (0.50 g, 2.6 mmol) in tetrahydrofuran (13 mL) were added cyclopropanemethanol (0.209 mL, 2.62 mmol), triphenylphosphine (0.687 g, 2.62 mmol), and DIAD (0.509 mL, 2.62 mmol). The reaction mixture was stirred for 16 hours at ambient temperature. The solvent was removed under reduced pressure. The residue was triturated with hexanes. The mixture was filtered, and the filtrate containing the product was concentrated by under reduced pressure. The residue was purified by flash chromatography (silica gel, hexanes) to provide the title compound (400 mg, 62% yield). The solvent was removed under reduced pressure The residue was triturated with hexanes The mixture was filtered the filtrate containing the product was concentrated by under reduced pressure The residue was purified by flash chromatography (silica gel, hexanes)

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

実験手順: Starting from commercially available 2-bromo-4-fluoro-phenol and commercially available bromo-methyl-cyclopropane the title compound is obtained as colorless oil after distillation at 5×10−3 mbar.

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

実験手順: Starting from commercially available 2-bromo-4-fluoro-phenol and commercially available bromo-methyl-cyclopropane the title compound is obtained as colorless oil after distillation at 5×10−3 mbar.

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

実験手順: Starting from commercially available 2-bromo-4-fluoro-phenol and commercially available bromomethyl-cyclopropane the title compound is obtained as colorless oil after distillation at 5×10−3 mbar.

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

実験手順: Starting from commercially available 2-bromo-4-fluoro-phenol and commercially available bromomethyl-cyclopropane the title compound is obtained as colorless oil after distillation at 5×10−3 mbar.

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

実験手順: Starting from commercially available 2-bromo-4-fluoro-phenol and commercially available bromomethyl-cyclopropane the title compound is obtained as colorless oil after distillation at 5×10−3 mbar.

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

実験手順: Starting from commercially available 2-bromo-4-fluoro-phenol and bromomethyl-cyclopropane the title compound is obtained as colorless oil.

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

実験手順: Starting from commercially available 2-bromo-4-fluoro-phenol and commercially available bromo-methyl-cyclopropane the title compound is obtained as colorless oil after distillation at 5×10−3 mbar.

反応条件: temp:-40.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a solution of Example 274a (0.1 g, 0.408 mmol) in tetrahydrofuran (2 mL) at −20° C. was added nBuLi (0.180 mL of a 2.5 M solution in hexanes, 0.449 mmol). The reaction mixture was stirred for 2 hours, then cooled to −40° C. 2-Isopropoxy-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (0.092 mL, 0.449 mmol) was added dropwise. The reaction mixture was stirred for 30 minutes. The reaction mixture was quenched with 1M citric acid at 0° C. The mixture was stirred at ambient temperature for 1 hour and then extracted with ethyl acetate. The layers were separated, and the organic layer was dried over anhydrous sodium sulfate, filtered, and concentrated. The crude material was purified by flash chromatography (silica gel, 10-33% ethyl acetate/hexanes gradient) to provide the title compound (23 mg, 20% yield). The reaction mixture was stirred for 30 minutes The reaction mixture was quenched with 1M citric acid at 0° C The mixture was stirred at ambient temperature for 1 hour extracted with ethyl acetate The layers were separated the organic layer was dried over anhydrous sodium sulfate filtered concentrated The crude material was purified by flash chromatography (silica gel, 10-33% ethyl acetate/hexanes gradient)

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

実験手順: To a solution of 2-bromo-4-fluorophenol (0.50 g, 2.6 mmol) in tetrahydrofuran (13 mL) were added cyclopropanemethanol (0.209 mL, 2.62 mmol), triphenylphosphine (0.687 g, 2.62 mmol), and DIAD (0.509 mL, 2.62 mmol). The reaction mixture was stirred for 16 hours at ambient temperature. The solvent was removed under reduced pressure. The residue was triturated with hexanes. The mixture was filtered, and the filtrate containing the product was concentrated by under reduced pressure. The residue was purified by flash chromatography (silica gel, hexanes) to provide the title compound (400 mg, 62% yield). The solvent was removed under reduced pressure The residue was triturated with hexanes The mixture was filtered the filtrate containing the product was concentrated by under reduced pressure The residue was purified by flash chromatography (silica gel, hexanes)