methyl 3,5-dichlorobenzoate

反応条件: temp:0.00; pressure:0.00; stir:

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

実験手順: A mixture of methyl 3,5-dichlorobenzoate (14.66 g, 71.5 mmol), zinc cyanide (5.04 g, 42.9 mmol) zinc (dust, 0.21 g, 3.21 mmol), [1,1′Bis(diphenylphosphino)ferrocene] dichloropalladium(II), complex with dichloromethane (1:1) (1.3 g, 1.57 mmol) in N,N-dimethylformamide (70 mL) was heated at reflux for 5 hours. After cooling the reaction was diluted with ethyl acetate and extracted with water and brine. Silica gel chromatography afforded 2.34g (17%) methyl 2-chloro-5-cyanobenzoate. was heated at reflux for 5 hours After cooling the reaction extracted with water and brine

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

実験手順: A mixture of methyl 3,5-dichlorobenzoate (14.66 g, 71.5 mmol), zinc cyanide (5.04 g, 42.9 mmol) zinc (dust, 0.21 g, 3.21 mmol), [1,1′Bis(diphenylphosphino)ferrocene] dichloropalladium(II), complex with dichloromethane (1:1) (1.3 g, 1.57 mmol) in N,N-dimethylformamide (70 mL) was heated at reflux for 5 hours. After cooling the reaction was diluted with ethyl acetate and extracted with water and brine. Silica gel chromatography afforded 2.34g (17%) methyl 2-chloro-5-cyanobenzoate. was heated at reflux for 5 hours After cooling the reaction extracted with water and brine

反応条件: temp:0.00; pressure:0.00; stir:

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

実験手順: A mixture of methyl 3,5-dichlorobenzoate (14.66 g, 71.5 mmol), zinc cyanide (5.04 g, 42.9 mmol) zinc (dust, 0.21 g, 3.21 mmol), [1,1′Bis(diphenylphosphino)ferrocene]dichloropalladium(II), complex with dichloromethane (1:1) (1.3 g, 1.57 mmol) in N,N-dimethylformamide (70 mL) was heated at reflux for 5 hours. After cooling the reaction was diluted with ethyl acetate and extracted with water and brine. Silica gel chromatography afforded 2.34 g (17%) methyl 2-chloro-5-cyanobenzoate. was heated at reflux for 5 hours After cooling the reaction extracted with water and brine

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

実験手順: Methyl 3,5-dichlorobenzoate (2-D) (1.07 g, 5.0 mmol) was suspended in a vigorously stirring solution of methylamine (40%/H2O, 5.0 mL). After heating gently for 10 min, the mixture was stirred at room temperature for 18 h. The mixture was extracted with methylene chloride and the extract dried (MgSO4) to provide 3,5-dichloro-N-methylbenzamide (2-E). After heating gently for 10 min The mixture was extracted with methylene chloride the extract dried (MgSO4)

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

実験手順: Trimethylsilyldiazomethane (2M/ether, 3.5 mL) was added slowly to a solution of 3,5-dichlorobenzoic acid (2-C) (955 mg, 5.0 mmol) in methylene chloride (5.0 mL) and methanol (2.0 mL) until the yellow color persisted. After stirring for 10 min, the mixture was evaporated in vacuo to give methyl 3,5-dichlorobenzoate (2-D). the mixture was evaporated in vacuo

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

実験手順: 10 g of concentrated sulfuric acid was added to a methanol (120 g) solution of 50 g of 3,5-dichlorobenzoic acid, and the mixture was refluxed by heating for 5 hours. After cooling the reaction solution to room temperature, the solvent was distilled off under reduced pressure. The obtained residue was dissolved into 200 g of ethyl acetate, washed with water (200 g×2), then washed with a saturated aqueous solution of sodium bicarbonate, and further washed with water. After drying the organic phase over anhydrous magnesium sulfate, 48.6 g of the target product was obtained as a white solid by removing the solvent by distilling under reduced pressure. the mixture was refluxed by heating for 5 hours the solvent was distilled off under reduced pressure The obtained residue was dissolved into 200 g of ethyl acetate washed with water (200 g×2) washed with a saturated aqueous solution of sodium bicarbonate further washed with water After drying the organic phase over anhydrous magnesium sulfate

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

実験手順: 10 g of concentrated sulfuric acid was added to a methanol (120 g) solution of 50 g of 3,5-dichlorobenzoic acid, and the mixture was refluxed by heating for 5 hours. After cooling the reaction solution to room temperature, the solvent was distilled off under reduced pressure. The obtained residue was dissolved into 200 g of ethyl acetate, washed with water (200 g×2), then washed with a saturated aqueous solution of sodium bicarbonate, and further washed with water. After drying the organic phase over anhydrous magnesium sulfate, 48.6 g of the target product was obtained as a white solid by removing the solvent by distilling under reduced pressure. the mixture was refluxed by heating for 5 hours the solvent was distilled off under reduced pressure The obtained residue was dissolved into 200 g of ethyl acetate washed with water (200 g×2) washed with a saturated aqueous solution of sodium bicarbonate further washed with water After drying the organic phase over anhydrous magnesium sulfate

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

実験手順: A mixture of methyl 3,5-dichlorobenzoate (14.66 g, 71.5 mmol), zinc cyanide (5.04 g, 42.9 mmol) zinc (dust, 0.21 g, 3.21 mmol), [1,1′Bis(diphenylphosphino)ferrocene] dichloropalladium(II), complex with dichloromethane (1:1) (1.3 g, 1.57 mmol) in N,N-dimethylformamide (70 mL) was heated at reflux for 5 hours. After cooling the reaction was diluted with ethyl acetate and extracted with water and brine. Silica gel chromatography afforded 2.34g (17%) methyl 2-chloro-5-cyanobenzoate. was heated at reflux for 5 hours After cooling the reaction extracted with water and brine