2,6-二氟苯甲酰乙酸乙酯

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

实验步骤: Ethyl 3-(2,6-difluorophenyl)-3-oxopropanoate (12.3 g, 53.8 mmol) and triethylamine (22.5 mL, 0.161 mol, 3.0 equiv) were dissolved in acetonitrile (160 mL) and treated with 4-acetamidobenzenesulfonyl azide. The mixture was stirred for 18 hours at ambient temperature, concentrated in vacuo and the residue was purified by silica gel chromatography (eluting with chloroform), providing the titled compound. concentrated in vacuo the residue was purified by silica gel chromatography (eluting with chloroform)

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

实验步骤: Ethyl 3-(2,6-difluorophenyl)-3-oxopropanoate (12.3 g, 53.8 mmol) and triethylamine (22.5 mL, 0.161 mol, 3.0 equiv) were dissolved in acetonitrile (160 mL) and treated with 4-acetamidobenzenesulfonyl azide. The mixture was stirred for 18 hours at ambient temperature, concentrated in vacuo and the residue was purified by silica gel chromatography (eluting with chloroform), providing the titled compound. concentrated in vacuo the residue was purified by silica gel chromatography (eluting with chloroform)

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

实验步骤: A mixture of 2,6-difluorobenzoic acid (15 g, 0.095 mol) and carbonyldiimidazole (18 g, 0.14 mol, 1.5 equiv) in anhydrous tetrahydrofuran (150 mL) was stirred at ambient temperature for 6 hours. In a separate flask, a suspension of anhydrous magnesium(II) chloride (9.0 g, 0.095 mol, 1.0 equiv) and potassium ethyl malonate (22 g, 0.13 mol, 1.4 equiv) in tetrahydrofuran (225 mL) was stirred at 50-60° C. for 6 hours, cooled to ambient temperature, which was then added via syringe to the solution of activated acid, and the mixture was stirred for an additional 18 hours at ambient temperature. The mixture was refluxed for 3 hours, cooled to ambient temperature, poured into water and acidified with hydrochloric acid (12 N aqueous) to pH<2. The aqueous layer was extracted with ethyl acetate and the organic extract was washed with water, dried with sodium sulfate, filtered and concentrated in vacuo, providing the titled compound. was stirred at 50-60° C. for 6 hours cooled to ambient temperature which was then added via syringe to the solution of activated acid the mixture was stirred for an additional 18 hours at ambient temperature The mixture was refluxed for 3 hours cooled to ambient temperature The aqueous layer was extracted with ethyl acetate the organic extract was washed with water dried with sodium sulfate filtered concentrated in vacuo

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

实验步骤: A mixture of 2,6-difluorobenzoic acid (15 g, 0.095 mol) and carbonyldiimidazole (18 g, 0.14 mol, 1.5 equiv) in anhydrous tetrahydrofuran (150 mL) was stirred at ambient temperature for 6 hours. In a separate flask, a suspension of anhydrous magnesium(II) chloride (9.0 g, 0.095 mol, 1.0 equiv) and potassium ethyl malonate (22 g, 0.13 mol, 1.4 equiv) in tetrahydrofuran (225 mL) was stirred at 50-60° C. for 6 hours, cooled to ambient temperature, which was then added via syringe to the solution of activated acid, and the mixture was stirred for an additional 18 hours at ambient temperature. The mixture was refluxed for 3 hours, cooled to ambient temperature, poured into water and acidified with hydrochloric acid (12 N aqueous) to pH<2. The aqueous layer was extracted with ethyl acetate and the organic extract was washed with water, dried with sodium sulfate, filtered and concentrated in vacuo, providing the titled compound. was stirred at 50-60° C. for 6 hours cooled to ambient temperature which was then added via syringe to the solution of activated acid the mixture was stirred for an additional 18 hours at ambient temperature The mixture was refluxed for 3 hours cooled to ambient temperature The aqueous layer was extracted with ethyl acetate the organic extract was washed with water dried with sodium sulfate filtered concentrated in vacuo

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

实验步骤: Ethyl 3-(2,6-difluorophenyl)-3-oxopropanoate (12.3 g, 53.8 mmol) and triethylamine (22.5 mL, 0.161 mol, 3.0 equiv) were dissolved in acetonitrile (160 mL) and treated with 4-acetamidobenzenesulfonyl azide. The mixture was stirred for 18 hours at ambient temperature, concentrated in vacuo and the residue was purified by silica gel chromatography (eluting with chloroform), providing the titled compound. concentrated in vacuo the residue was purified by silica gel chromatography (eluting with chloroform)

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

实验步骤: A mixture of 2,6-difluorobenzoic acid (15 g, 0.095 mot) and carbonyldiimidazole (18 g, 0.14 mol, 1.5 equiv) in anhydrous tetrahydrofuran (150 mL) was stirred at ambient temperature for 6 hours. In a separate flask, a suspension of anhydrous magnesium(II)chloride (9.0 g, 0.095 mol, 1.0 equiv) and potassium ethyl malonate (22 g, 0.13 mol, 1.4 equiv) in tetrahydrofuran (225 mL) was stirred at 50-60° C. for 6 hours, cooled to ambient temperature, which was then added via syringe to the solution of activated acid, and the mixture was stirred for an additional 18 hours at ambient temperature. The mixture was refluxed for 3 hours, cooled to ambient temperature, poured into water and acidified with hydrochloric acid (12 N aqueous) to pH<2. The aqueous layer was extracted with ethyl acetate and the organic extract was washed with water, dried with sodium sulfate, filtered and concentrated in vacuo, providing the titled compound. was stirred at 50-60° C. for 6 hours cooled to ambient temperature which was then added via syringe to the solution of activated acid the mixture was stirred for an additional 18 hours at ambient temperature The mixture was refluxed for 3 hours cooled to ambient temperature The aqueous layer was extracted with ethyl acetate the organic extract was washed with water dried with sodium sulfate filtered concentrated in vacuo

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

实验步骤: A mixture of 2,6-difluorobenzoic acid (15 g, 0.095 mot) and carbonyldiimidazole (18 g, 0.14 mol, 1.5 equiv) in anhydrous tetrahydrofuran (150 mL) was stirred at ambient temperature for 6 hours. In a separate flask, a suspension of anhydrous magnesium(II)chloride (9.0 g, 0.095 mol, 1.0 equiv) and potassium ethyl malonate (22 g, 0.13 mol, 1.4 equiv) in tetrahydrofuran (225 mL) was stirred at 50-60° C. for 6 hours, cooled to ambient temperature, which was then added via syringe to the solution of activated acid, and the mixture was stirred for an additional 18 hours at ambient temperature. The mixture was refluxed for 3 hours, cooled to ambient temperature, poured into water and acidified with hydrochloric acid (12 N aqueous) to pH<2. The aqueous layer was extracted with ethyl acetate and the organic extract was washed with water, dried with sodium sulfate, filtered and concentrated in vacuo, providing the titled compound. was stirred at 50-60° C. for 6 hours cooled to ambient temperature which was then added via syringe to the solution of activated acid the mixture was stirred for an additional 18 hours at ambient temperature The mixture was refluxed for 3 hours cooled to ambient temperature The aqueous layer was extracted with ethyl acetate the organic extract was washed with water dried with sodium sulfate filtered concentrated in vacuo

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

实验步骤: Ethyl 3-(2,6-difluorophenyl)-3-oxopropanoate (12.3 g, 53.8 mmol) and triethylamine (22.5 mL, 0.161 mol, 3.0 equiv) were dissolved in acetonitrile (160 mL) and treated with 4-acetamidobenzenesulfonyl azide. The mixture was stirred for 18 hours at ambient temperature, concentrated in vacuo and the residue was purified by silica gel chromatography (eluting with chloroform), providing the titled compound. concentrated in vacuo the residue was purified by silica gel chromatography (eluting with chloroform)

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

实验步骤: A mixture of 2,6-difluorobenzoic acid (15 g, 0.095 mol) and carbonyldiimidazole (18 g, 0.14 mol, 1.5 equiv) in anhydrous tetrahydrofuran (150 mL) was stirred at ambient temperature for 6 hours. In a separate flask, a suspension of anhydrous magnesium(II) chloride (9.0 g, 0.095 mol, 1.0 equiv) and potassium ethyl malonate (22 g, 0.13 mol, 1.4 equiv) in tetrahydrofuran (225 mL) was stirred at 50-60° C. for 6 hours, cooled to ambient temperature, which was then added via syringe to the solution of activated acid, and the mixture was stirred for an additional 18 hours at ambient temperature. The mixture was refluxed for 3 hours, cooled to ambient temperature, poured into water and acidified with hydrochloric acid (12 N aqueous) to pH<2. The aqueous layer was extracted with ethyl acetate and the organic extract was washed with water, dried with sodium sulfate, filtered and concentrated in vacuo, providing the titled compound. was stirred at 50-60° C. for 6 hours cooled to ambient temperature which was then added via syringe to the solution of activated acid the mixture was stirred for an additional 18 hours at ambient temperature The mixture was refluxed for 3 hours cooled to ambient temperature The aqueous layer was extracted with ethyl acetate the organic extract was washed with water dried with sodium sulfate filtered concentrated in vacuo

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

实验步骤: Ethyl 3-(2,6-difluorophenyl)-3-oxopropanoate (12.3 g, 53.8 mmol) and triethylamine (22.5 mL, 0.161 mol, 3.0 equiv) were dissolved in acetonitrile (160 mL) and treated with 4-acetamidobenzenesulfonyl azide. The mixture was stirred for 18 hours at ambient temperature, concentrated in vacuo and the residue was purified by silica gel chromatography (eluting with chloroform), providing the titled compound. concentrated in vacuo the residue was purified by silica gel chromatography (eluting with chloroform)

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

实验步骤: A mixture of 2,6-difluorobenzoic acid (15 g, 0.095 mot) and carbonyldiimidazole (18 g, 0.14 mol, 1.5 equiv) in anhydrous tetrahydrofuran (150 mL) was stirred at ambient temperature for 6 hours. In a separate flask, a suspension of anhydrous magnesium(II)chloride (9.0 g, 0.095 mol, 1.0 equiv) and potassium ethyl malonate (22 g, 0.13 mol, 1.4 equiv) in tetrahydrofuran (225 mL) was stirred at 50-60° C. for 6 hours, cooled to ambient temperature, which was then added via syringe to the solution of activated acid, and the mixture was stirred for an additional 18 hours at ambient temperature. The mixture was refluxed for 3 hours, cooled to ambient temperature, poured into water and acidified with hydrochloric acid (12 N aqueous) to pH<2. The aqueous layer was extracted with ethyl acetate and the organic extract was washed with water, dried with sodium sulfate, filtered and concentrated in vacuo, providing the titled compound. was stirred at 50-60° C. for 6 hours cooled to ambient temperature which was then added via syringe to the solution of activated acid the mixture was stirred for an additional 18 hours at ambient temperature The mixture was refluxed for 3 hours cooled to ambient temperature The aqueous layer was extracted with ethyl acetate the organic extract was washed with water dried with sodium sulfate filtered concentrated in vacuo

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

实验步骤: Ethyl 3-(2,6-difluorophenyl)-3-oxopropanoate (12.3 g, 53.8 mmol) and triethylamine (22.5 mL, 0.161 mol, 3.0 equiv) were dissolved in acetonitrile (160 mL) and treated with 4-acetamidobenzenesulfonyl azide. The mixture was stirred for 18 hours at ambient temperature, concentrated in vacuo and the residue was purified by silica gel chromatography (eluting with chloroform), providing the titled compound. concentrated in vacuo the residue was purified by silica gel chromatography (eluting with chloroform)