1-(4-氟苯基)-2-硫代氰酸酯邻-乙酮

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:130.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a solution of 2-(4-fluorophenyl)-2-oxoethyl thiocyanate (3.70 g, 19.0 mmol) in acetic acid (35 ml) was added a 25% hydrogen bromide/acetic acid (35 ml) solution, and the mixture was stirred at 130° C. for 2 hours and at room temperature for 2 hours. Water was poured into the reaction solution, and the mixture was extracted with chloroform. The extract was washed with water and dried over anhydrous magnesium sulfate, and the solvent was distilled off under reduced pressure. The residue was recrystallized from a mixed solvent of ethanol and water to give the desired product (4.50 g, 91.9%) as a solid. the mixture was extracted with chloroform The extract was washed with water dried over anhydrous magnesium sulfate the solvent was distilled off under reduced pressure The residue was recrystallized from a mixed solvent of ethanol and water

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

实验步骤: A solution of 2-bromo-1-(4-fluorophenyl)ethanone (5.00 g, 23.0 mmol) and potassium thiocyanate (2.24 g, 23.0 mmol) in ethanol (50 ml) was stirred at 80° C. for 3 hours. After cooling to room temperature, water (60 ml) was poured into the reaction solution, and a crystal was separated by filtration, which was washed with 50% aqueous ethanol solution to give the desired product (3.71 g, 82.5%) as a solid. a crystal was separated by filtration, which was washed with 50% aqueous ethanol solution

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

实验步骤: 10 g (46 mmol) of 2-bromo-1-(4-fluorophenyl)ethanone and 3.74 g (46 mmol) of sodium thiocyanate were stirred in 80 ml ethanol at 50° C. for 2 h. After addition of water the separated solid was isolated by filtration, washed and dried. Yield: 8.96 g. was isolated by filtration washed dried