2-氟茴香硫醚

反应条件: temp:0.00; pressure:0.00; stir:

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

实验步骤: A solution of 2-fluorothioanisole (1.42 g, 10 mmol) and iron powder (0.03 g, 0.5 mmol) in dichloromethane (20 mL) was chilled to ° C. and treated dropwise with Bromine (0.5 mL, 10 mmol). Upon completion of the Bromine treatment, the reaction was sampled for TLC (100% hexanes). A new, higher Rf material was present but the reaction had not gone to completion so another equivalent of bromine was added along with a catalytic amount of aluminum chloride. The reaction mixture was stirred overnight at room temperature. Aqueous sodium sulfite was added to the reaction mixture and the organic layer was isolated, dried over MgSO4, and filtered. The filtrate was filtered through a pad of silica gel to remove color then concentrated under reduced pressure to provide the product as a clear, colorless oil (yield: 1.3 g; 60%). 1H NMR (300 MHz, DMSO-d6) δ 2.48 (s, 3H), 7.31 (t, J=9 Hz, 1H), 7.43 (dd, J=9 Hz, 3 Hz, 1H) 7.54 (dd, J=9 Hz, 3 Hz, 1H). the organic layer was isolated dried over MgSO4 filtered The filtrate was filtered through a pad of silica gel to remove color then concentrated under reduced pressure to provide the product as a clear, colorless oil (yield: 1.3 g; 60%)

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

实验步骤: A deoxygenated solution of 2-fluorothiophenol (10 g, 78 mmol) in anhydrous DMF (10 mL) was treated with iodomethane (4.9 mL, 78 mmol) and potassium carbonate (10.8 g, 78 mmol). The reaction mixture was stirred at room temperature for 1 hour. A thin layer chromotography (100% hexanes) sample indicated that the reaction had not gone to completion, so an additional equivalent of base and iodomethane were added and the reaction mixture was stirred overnight at room temperature. The reaction was acidified with 10% aqueous citric acid and extracted with hexanes (2×125 mL). The combined organic extracts were washed with brine, dried over MgSO4, and filtered. The filtrate was concentrated under reduced pressure to provide the desired compound as a pale yellow oil (yield: 6.68 g; 60%). the reaction mixture was stirred overnight at room temperature extracted with hexanes (2×125 mL) The combined organic extracts were washed with brine dried over MgSO4 filtered The filtrate was concentrated under reduced pressure

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

实验步骤: A solution of 2-fluorothioanisole (1.42 g, 10 mmol) and iron powder (0.03 g, 0.5 mmol) in dichloromethane (20 mL) was chilled to ° C. and treated dropwise with Bromine (0.5 mL, 10 mmol). Upon completion of the Bromine treatment, the reaction was sampled for TLC (100% hexanes). A new, higher Rf material was present but the reaction had not gone to completion so another equivalent of bromine was added along with a catalytic amount of aluminum chloride. The reaction mixture was stirred overnight at room temperature. Aqueous sodium sulfite was added to the reaction mixture and the organic layer was isolated, dried over MgSO4, and filtered. The filtrate was filtered through a pad of silica gel to remove color then concentrated under reduced pressure to provide the product as a clear, colorless oil (yield: 1.3 g; 60%). 1H NMR (300 MHz, DMSO-d6) δ 2.48 (s, 3H), 7.31 (t, J=9 Hz, 1H), 7.43 (dd, J=9 Hz, 3 Hz, 1H) 7.54 (dd, J=9 Hz, 3 Hz, 1H). the organic layer was isolated dried over MgSO4 filtered The filtrate was filtered through a pad of silica gel to remove color then concentrated under reduced pressure to provide the product as a clear, colorless oil (yield: 1.3 g; 60%)

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

实验步骤: A deoxygenated solution of 2-fluorothiophenol (10 g, 78 mmol) in anhydrous DMF (10 mL) was treated with iodomethane (4.9 mL, 78 mmol) and potassium carbonate (10.8 g, 78 mmol). The reaction mixture was stirred at room temperature for 1 hour. A thin layer chromotography (100% hexanes) sample indicated that the reaction had not gone to completion, so an additional equivalent of base and iodomethane were added and the reaction mixture was stirred overnight at room temperature. The reaction was acidified with 10% aqueous citric acid and extracted with hexanes (2×125 mL). The combined organic extracts were washed with brine, dried over MgSO4, and filtered. The filtrate was concentrated under reduced pressure to provide the desired compound as a pale yellow oil (yield: 6.68 g; 60%). the reaction mixture was stirred overnight at room temperature extracted with hexanes (2×125 mL) The combined organic extracts were washed with brine dried over MgSO4 filtered The filtrate was concentrated under reduced pressure

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

实验步骤: A deoxygenated solution of 2-fluorothiophenol (10 g, 78 mmol) in anhydrous DMF (10 mL) was treated with iodomethane (4.9 mL, 78 mmol) and potassium carbonate (10.8 g, 78 mmol). The reaction mixture was stirred at room temperature for 1 hour. A thin layer chromotography (100% hexanes) sample indicated that the reaction had not gone to completion, so an additional equivalent of base and iodomethane were added and the reaction mixture was stirred overnight at room temperature. The reaction was acidified with 10% aqueous citric acid and extracted with hexanes (2×125 mL). The combined organic extracts were washed with brine, dried over MgSO4, and filtered. The filtrate was concentrated under reduced pressure to provide the desired compound as a pale yellow oil (yield: 6.68 g; 60%). the reaction mixture was stirred overnight at room temperature extracted with hexanes (2×125 mL) The combined organic extracts were washed with brine dried over MgSO4 filtered The filtrate was concentrated under reduced pressure

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

实验步骤: A solution of 2-fluorothioanisole (1.42 g, 10 mmol) and iron powder (0.03 g, 0.5 mmol) in dichloromethane (20 mL) was chilled to ° C. and treated dropwise with Bromine (0.5 mL, 10 mmol). Upon completion of the Bromine treatment, the reaction was sampled for TLC (100% hexanes). A new, higher Rf material was present but the reaction had not gone to completion so another equivalent of bromine was added along with a catalytic amount of aluminum chloride. The reaction mixture was stirred overnight at room temperature. Aqueous sodium sulfite was added to the reaction mixture and the organic layer was isolated, dried over MgSO4, and filtered. The filtrate was filtered through a pad of silica gel to remove color then concentrated under reduced pressure to provide the product as a clear, colorless oil (yield: 1.3 g; 60%). 1H NMR (300 MHz, DMSO-d6) δ 2.48 (s, 3H), 7.31 (t, J=9 Hz, 1H), 7.43 (dd, J=9 Hz, 3 Hz, 1H) 7.54 (dd, J=9 Hz, 3 Hz, 1H). the organic layer was isolated dried over MgSO4 filtered The filtrate was filtered through a pad of silica gel to remove color then concentrated under reduced pressure to provide the product as a clear, colorless oil (yield: 1.3 g; 60%)

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

实验步骤: A deoxygenated solution of 2-fluorothiophenol (10 g, 78 mmol) in anhydrous DMF (10 mL) was treated with iodomethane (4.9 mL, 78 mmol) and potassium carbonate (10.8 g, 78 mmol). The reaction mixture was stirred at room temperature for 1 hour. A thin layer chromotography (100% hexanes) sample indicated that the reaction had not gone to completion, so an additional equivalent of base and iodomethane were added and the reaction mixture was stirred overnight at room temperature. The reaction was acidified with 10% aqueous citric acid and extracted with hexanes (2×125 mL). The combined organic extracts were washed with brine, dried over MgSO4, and filtered. The filtrate was concentrated under reduced pressure to provide the desired compound as a pale yellow oil (yield: 6.68 g; 60%). the reaction mixture was stirred overnight at room temperature extracted with hexanes (2×125 mL) The combined organic extracts were washed with brine dried over MgSO4 filtered The filtrate was concentrated under reduced pressure

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

实验步骤: A deoxygenated solution of 2-fluorothiophenol (10 g, 78 mmol) in anhydrous DMF (10 mL) was treated with iodomethane (4.9 mL, 78 mmol) and potassium carbonate (10.8 g, 78 mmol). The reaction mixture was stirred at room temperature for 1 hour. A thin layer chromotography (100% hexanes) sample indicated that the reaction had not gone to completion, so an additional equivalent of base and iodomethane were added and the reaction mixture was stirred overnight at room temperature. The reaction was acidified with 10% aqueous citric acid and extracted with hexanes (2×125 mL). The combined organic extracts were washed with brine, dried over MgSO4, and filtered. The filtrate was concentrated under reduced pressure to provide the desired compound as a pale yellow oil (yield: 6.68 g; 60%). the reaction mixture was stirred overnight at room temperature extracted with hexanes (2×125 mL) The combined organic extracts were washed with brine dried over MgSO4 filtered The filtrate was concentrated under reduced pressure

反应条件: temp:0.00; pressure:0.00; stir:

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 1.5 ml 2-fluorothioanisole in 50 ml dichloromethane, were added at 0° C. 1.2 g of aluminum chloride and 1 ml of phenylacetyl chloride. The reaction mixture was stirred for 12 hours at the room temperature. Then the reaction was quenched by adding appropriate amount of ice and aqueous HCl in one portion. The quenched mixture was extracted with dichloromethane (50 ml×3) and the organic layer was washed with brine. The organic layer was dried over anhydrous magnesium sulfate, which was followed by removal of the magnesium sulfate by filtration. Then the filtrate was concentrated in vacuo and was purified by recrystallization from methanol to yield 1.8 g of 1-{3-fluoro-4-(methylthio)phenyl}-2-phenyl-ethan-1-one. mp: 71-72° C. NMR: δ2.50 (s, 3H), 4.22 (s, 2H), 7.20-7.33 (m, 6H), 7.64 (m, 1H), 7.77 (m, 1H). Step 2: Preparation of 2,2-dimethyl-5-{3-fluoro-4-(methylthio)phenyl}-4-phenyl-3(2H)-furanone Then the reaction was quenched by adding appropriate amount of ice and aqueous HCl in one portion The quenched mixture was extracted with dichloromethane (50 ml×3) the organic layer was washed with brine The organic layer was dried over anhydrous magnesium sulfate, which was followed by removal of the magnesium sulfate by filtration Then the filtrate was concentrated in vacuo was purified by recrystallization from methanol

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 1.5 ml 2-fluorothioanisole in 50 ml dichloromethane, were added at 0° C. 1.2 g of aluminum chloride and 1 ml of phenylacetyl chloride. The reaction mixture was stirred for 12 hours at the room temperature. Then the reaction was quenched by adding appropriate amount of ice and aqueous HCl in one portion. The quenched mixture was extracted with dichloromethane (50 ml×3) and the organic layer was washed with brine. The organic layer was dried over anhydrous magnesium sulfate, which was followed by removal of the magnesium sulfate by filtration. Then the filtrate was concentrated in vacuo and was purified by recrystallization from methanol to yield 1.8 g of 1-{3-fluoro-4-(methylthio)phenyl}-2-phenyl-ethan-1-one. mp: 71-72° C. NMR: δ2.50 (s, 3H), 4.22 (s, 2H), 7.20-7.33 (m, 6H), 7.64 (m, 1H), 7.77 (m, 1H). Step 2: Preparation of 2,2-dimethyl-5-{3-fluoro-4-(methylthio)phenyl}-4-phenyl-3(2H)-furanone Then the reaction was quenched by adding appropriate amount of ice and aqueous HCl in one portion The quenched mixture was extracted with dichloromethane (50 ml×3) the organic layer was washed with brine The organic layer was dried over anhydrous magnesium sulfate, which was followed by removal of the magnesium sulfate by filtration Then the filtrate was concentrated in vacuo was purified by recrystallization from methanol