2-[2-(difluoromethoxy)phenyl]acetonitrile

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:50.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: (2-Difluoromethoxyphenyl)acetonitrile (1.45 g) was added dropwise to a solution of chlorotrimethylsilane (2.23 mL) in ethanol (2.0 mL), and the reaction solution was stirred at 50° C. for five hours. The reaction solution was left to cool to room temperature. Then, potassium carbonate, water and ethyl acetate were added and the organic layer was separated. The resulting organic layer was dried over anhydrous magnesium sulfate and then concentrated under reduced pressure. The residue was purified by silica gel column chromatography (elution solvent: heptane-ethyl acetate system) to obtain 620 mg of the title compound. The property values of the compound are as follows. The reaction solution was left to cool to room temperature the organic layer was separated The resulting organic layer was dried over anhydrous magnesium sulfate concentrated under reduced pressure The residue was purified by silica gel column chromatography (elution solvent: heptane-ethyl acetate system)

Conditions: temp:-55.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of p-toluenesulfonylmethyl isocyanide (2.4 g) in dimethoxyethane (10 mL) was added to a solution of potassium tert-butoxide (2.68 g) in dimethoxyethane (30 mL) at −35° C., and the reaction solution was stirred at the same temperature for 10 minutes. The reaction solution was cooled to −55° C. A solution of difluoromethoxybenzaldehyde (2 g) in dimethoxyethane (5 mL) was added dropwise, and the reaction solution was stirred at the same temperature for two hours. 10 mL of methanol was added to the reaction solution, and the reaction solution was heated under reflux for 15 minutes. The reaction solution was left to cool to room temperature. Then, water and dichloromethane were added and the organic layer was separated. The resulting organic layer was dried over anhydrous magnesium sulfate and then concentrated under reduced pressure. The residue was purified by silica gel column chromatography (elution solvent: heptane-ethyl acetate system) to obtain 1.45 g of the title compound. The property values of the compound are as follows. the reaction solution was stirred at the same temperature for two hours the reaction solution was heated under reflux for 15 minutes The reaction solution was left to cool to room temperature the organic layer was separated The resulting organic layer was dried over anhydrous magnesium sulfate concentrated under reduced pressure The residue was purified by silica gel column chromatography (elution solvent: heptane-ethyl acetate system)

Conditions: temp:-55.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of p-toluenesulfonylmethyl isocyanide (2.4 g) in dimethoxyethane (10 mL) was added to a solution of potassium tert-butoxide (2.68 g) in dimethoxyethane (30 mL) at −35° C., and the reaction solution was stirred at the same temperature for 10 minutes. The reaction solution was cooled to −55° C. A solution of difluoromethoxybenzaldehyde (2 g) in dimethoxyethane (5 mL) was added dropwise, and the reaction solution was stirred at the same temperature for two hours. 10 mL of methanol was added to the reaction solution, and the reaction solution was heated under reflux for 15 minutes. The reaction solution was left to cool to room temperature. Then, water and dichloromethane were added and the organic layer was separated. The resulting organic layer was dried over anhydrous magnesium sulfate and then concentrated under reduced pressure. The residue was purified by silica gel column chromatography (elution solvent: heptane-ethyl acetate system) to obtain 1.45 g of the title compound. The property values of the compound are as follows. the reaction solution was stirred at the same temperature for two hours the reaction solution was heated under reflux for 15 minutes The reaction solution was left to cool to room temperature the organic layer was separated The resulting organic layer was dried over anhydrous magnesium sulfate concentrated under reduced pressure The residue was purified by silica gel column chromatography (elution solvent: heptane-ethyl acetate system)

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:50.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: (2-Difluoromethoxyphenyl)acetonitrile (1.45 g) was added dropwise to a solution of chlorotrimethylsilane (2.23 mL) in ethanol (2.0 mL), and the reaction solution was stirred at 50° C. for five hours. The reaction solution was left to cool to room temperature. Then, potassium carbonate, water and ethyl acetate were added and the organic layer was separated. The resulting organic layer was dried over anhydrous magnesium sulfate and then concentrated under reduced pressure. The residue was purified by silica gel column chromatography (elution solvent: heptane-ethyl acetate system) to obtain 620 mg of the title compound. The property values of the compound are as follows. The reaction solution was left to cool to room temperature the organic layer was separated The resulting organic layer was dried over anhydrous magnesium sulfate concentrated under reduced pressure The residue was purified by silica gel column chromatography (elution solvent: heptane-ethyl acetate system)

Conditions: temp:-55.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of p-toluenesulfonylmethyl isocyanide (2.4 g) in dimethoxyethane (10 mL) was added to a solution of potassium tert-butoxide (2.68 g) in dimethoxyethane (30 mL) at −35° C., and the reaction solution was stirred at the same temperature for 10 minutes. The reaction solution was cooled to −55° C. A solution of difluoromethoxybenzaldehyde (2 g) in dimethoxyethane (5 mL) was added dropwise, and the reaction solution was stirred at the same temperature for two hours. 10 mL of methanol was added to the reaction solution, and the reaction solution was heated under reflux for 15 minutes. The reaction solution was left to cool to room temperature. Then, water and dichloromethane were added and the organic layer was separated. The resulting organic layer was dried over anhydrous magnesium sulfate and then concentrated under reduced pressure. The residue was purified by silica gel column chromatography (elution solvent: heptane-ethyl acetate system) to obtain 1.45 g of the title compound. The property values of the compound are as follows. the reaction solution was stirred at the same temperature for two hours the reaction solution was heated under reflux for 15 minutes The reaction solution was left to cool to room temperature the organic layer was separated The resulting organic layer was dried over anhydrous magnesium sulfate concentrated under reduced pressure The residue was purified by silica gel column chromatography (elution solvent: heptane-ethyl acetate system)

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir: