异丁酸钾

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

实验步骤: 199 g (0.9 mol) of 3 of [3-chloro-5-(trifluoromethyl)-2-pyridinyl]acetonitrile are dissolved in 3 L of THF at −5° C. A solution of 106 g (0.945 mol) of potassium tertbutanoate in 0.6 L of THF is slowly added to the reaction medium. After 2 H, 147 g (0.945 mol) of ethyl iodide is added dropwise to the reaction mixture which is stirred overnight at room temperature. 3 L of water and 2 L of ethyl acetate are added to the reaction mixture, after separation, the aqueous phase is extracted twice with 500 mL of ethyl acetate. after separation the aqueous phase is extracted twice with 500 mL of ethyl acetate

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

实验步骤: 199 g (0.9 mol) of 3 of [3-chloro-5-(trifluoromethyl)-2-pyridinyl]acetonitrile are dissolved in 3 L of THF at −5° C. A solution of 106 g (0.945 mol) of potassium terbutanoate in 0.6 L of THF is slowly added to the reaction medium. After 2H, 147 g (0.945 mol) of ethyl iodide is added dropwise to the reaction mixture which is stirred overnight at room temperature. 3 L of water and 2 L of ethyl acetate are added to the reaction mixture, after separation, the aqueous phase is extracted twice with 500 mL of ethyl acetate. after separation the aqueous phase is extracted twice with 500 mL of ethyl acetate

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

实验步骤: In a mixture of 50 ml of acetone and 10 ml of water are dissolved 1.5 g of 16β-ethyl-bromoacetoxy-4-estren-3-one and 0.8 g of potassium isobutyrate and the solution is refluxed for 6 hours. The acetone is distilled off under reduced pressure and the residue is extracted with 200 ml of ethyl acetate. The organic layer is separated, washed with water and saturated aqueous sodium chloride and dried over anhydrous magnesium sulfate. The solvent is then distilled off under reduced pressure and the residue is subjected to column chromatography. Following passage of 100 ml of diisopropyl ether, elution is carried out with 300 ml of ethyl ether. The eluate is evaporated under reduced pressure to remove the solvent, giving 1.08 g of the above-identified compound as a viscous oil. the solution is refluxed for 6 hours The acetone is distilled off under reduced pressure the residue is extracted with 200 ml of ethyl acetate The organic layer is separated washed with water and saturated aqueous sodium chloride dried over anhydrous magnesium sulfate The solvent is then distilled off under reduced pressure passage of 100 ml of diisopropyl ether, elution The eluate is evaporated under reduced pressure to remove the solvent

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

实验步骤: 199 g (0.9 mol) of 3 of [3-chloro-5-(trifluoromethyl)-2-pyridinyl]acetonitrile are dissolved in 3 L of THF at −5° C. A solution of 106 g (0.945 mol) of potassium terbutanoate in 0.6 L of THF is slowly added to the reaction medium. After 2H, 147 g (0.945 mol) of ethyl iodide is added dropwise to the reaction mixture which is stirred overnight at room temperature. 3 L of water and 2 L of ethyl acetate are added to the reaction mixture, after separation, the aqueous phase is extracted twice with 500 mL of ethyl acetate. after separation the aqueous phase is extracted twice with 500 mL of ethyl acetate

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

实验步骤: In a mixture of 50 ml of acetone and 10 ml of water are dissolved 1.5 g of 16β-ethyl-bromoacetoxy-4-estren-3-one and 0.8 g of potassium isobutyrate and the solution is refluxed for 6 hours. The acetone is distilled off under reduced pressure and the residue is extracted with 200 ml of ethyl acetate. The organic layer is separated, washed with water and saturated aqueous sodium chloride and dried over anhydrous magnesium sulfate. The solvent is then distilled off under reduced pressure and the residue is subjected to column chromatography. Following passage of 100 ml of diisopropyl ether, elution is carried out with 300 ml of ethyl ether. The eluate is evaporated under reduced pressure to remove the solvent, giving 1.08 g of the above-identified compound as a viscous oil. the solution is refluxed for 6 hours The acetone is distilled off under reduced pressure the residue is extracted with 200 ml of ethyl acetate The organic layer is separated washed with water and saturated aqueous sodium chloride dried over anhydrous magnesium sulfate The solvent is then distilled off under reduced pressure passage of 100 ml of diisopropyl ether, elution The eluate is evaporated under reduced pressure to remove the solvent

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

实验步骤: To a solution of 50 g of 2-fluoro-3-nitrotoluene in 1.1 L of DMSO are added at room temperature 59.5 g of para-anisidine (1.5 equivalents). After 5 minutes of stirring at room temperature, 57.9 g of potassium tert-butanoate (1.6 equivalents) are added to the reaction medium and the whole is heated to 110° C. for 1 hour. The reaction medium is directly hydrolyzed by adding 1 L of ice and water and then the aqueous phase is extracted several times with ethyl acetate. The organic phases are collected, dried on sodium sulphate, filtered and then dry concentrated. The raw product is chromatographed on silica gel (ether/cyclohexane:0/100, 5/95 and then 20/80) in order to provide 34.95 g of the expected compound as a dark red solid. the whole is heated to 110° C. for 1 hour the aqueous phase is extracted several times with ethyl acetate The organic phases are collected dried on sodium sulphate filtered dry concentrated The raw product is chromatographed on silica gel (ether/cyclohexane

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

实验步骤: 199 g (0.9 mol) of 3 of [3-chloro-5-(trifluoromethyl)-2-pyridinyl]acetonitrile are dissolved in 3 L of THF at −5° C. A solution of 106 g (0.945 mol) of potassium terbutanoate in 0.6 L of THF is slowly added to the reaction medium. After 2H, 147 g (0.945 mol) of ethyl iodide is added dropwise to the reaction mixture which is stirred overnight at room temperature. 3 L of water and 2 L of ethyl acetate are added to the reaction mixture, after separation, the aqueous phase is extracted twice with 500 mL of ethyl acetate. after separation the aqueous phase is extracted twice with 500 mL of ethyl acetate

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

实验步骤: 199 g (0.9 mol) of 3 of [3-chloro-5-(trifluoromethyl)-2-pyridinyl]acetonitrile are dissolved in 3 L of THF at −5° C. A solution of 106 g (0.945 mol) of potassium tertbutanoate in 0.6 L of THF is slowly added to the reaction medium. After 2 H, 147 g (0.945 mol) of ethyl iodide is added dropwise to the reaction mixture which is stirred overnight at room temperature. 3 L of water and 2 L of ethyl acetate are added to the reaction mixture, after separation, the aqueous phase is extracted twice with 500 mL of ethyl acetate. after separation the aqueous phase is extracted twice with 500 mL of ethyl acetate

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

实验步骤: 199 g (0.9 mol) of 3 of [3-chloro-5-(trifluoromethyl)-2-pyridinyl]acetonitrile are dissolved in 3 L of THF at −5° C. A solution of 106 g (0.945 mol) of potassium terbutanoate in 0.6 L of THF is slowly added to the reaction medium. After 2H, 147 g (0.945 mol) of ethyl iodide is added dropwise to the reaction mixture which is stirred overnight at room temperature. 3 L of water and 2 L of ethyl acetate are added to the reaction mixture, after separation, the aqueous phase is extracted twice with 500 mL of ethyl acetate. after separation the aqueous phase is extracted twice with 500 mL of ethyl acetate

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

实验步骤: In a mixture of 50 ml of acetone and 10 ml of water are dissolved 1.5 g of 16β-ethyl-bromoacetoxy-4-estren-3-one and 0.8 g of potassium isobutyrate and the solution is refluxed for 6 hours. The acetone is distilled off under reduced pressure and the residue is extracted with 200 ml of ethyl acetate. The organic layer is separated, washed with water and saturated aqueous sodium chloride and dried over anhydrous magnesium sulfate. The solvent is then distilled off under reduced pressure and the residue is subjected to column chromatography. Following passage of 100 ml of diisopropyl ether, elution is carried out with 300 ml of ethyl ether. The eluate is evaporated under reduced pressure to remove the solvent, giving 1.08 g of the above-identified compound as a viscous oil. the solution is refluxed for 6 hours The acetone is distilled off under reduced pressure the residue is extracted with 200 ml of ethyl acetate The organic layer is separated washed with water and saturated aqueous sodium chloride dried over anhydrous magnesium sulfate The solvent is then distilled off under reduced pressure passage of 100 ml of diisopropyl ether, elution The eluate is evaporated under reduced pressure to remove the solvent