3-bromo-4-methoxyphenol

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:100.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: 2-bromoethyl methyl ether (0.07 mL, 0.74 mmol) was added to a mixture of potassium carbonate (136 mg, 0.99 mmol) and 3-bromo-4-methoxy-phenol (100 mg, 0.49 mmol) in DMF (2 mL) and mix heated at 100° C. for 1 hr. Reaction mixture was allowed to cool and partitioned between ethyl acetate (20 mL×2) and water (20 mL). The combined organic phases were washed with sat. aqueous sodium chloride solution (40 mL) and dried over sodium sulphate. Solvents were removed in vacuo to afford a crude oil which was purified by flash chromatography on silica gel, eluting with a gradient of 0-10% ethyl acetate in hexane to afford the title compound (113 mg, 88%) as a colourless liquid. mix Reaction mixture to cool partitioned between ethyl acetate (20 mL×2) and water (20 mL) The combined organic phases were washed with sat. aqueous sodium chloride solution (40 mL) dried over sodium sulphate Solvents were removed in vacuo to afford a crude oil which was purified by flash chromatography on silica gel eluting with a gradient of 0-10% ethyl acetate in hexane

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

実験手順: A solution of potassium hydroxide (290 mg, 5.19 mmol) in water (2.5 mL) was added to a solution of acetic acid 3-bromo-4-methoxy-phenyl ester (1.2 g, 4.9 mmol) in methanol (18.5 mL). Mixture was stirred at ambient temperature for 30 min, then solvents were removed in vacuo and water (40 mL) added. The mixture was made acidic by drop-wise addition of 1.2 M aq HCl solution (4.3 mL) and the mixture extracted with dichloromethane (2×40 mL). Combined organics were dried over sodium sulphate, filtered and filtrate solvents evaporated in vacuo to give the title compound (976 mg, 98%) as a pale yellow solid. solvents were removed in vacuo and water (40 mL) added The mixture was made acidic by drop-wise addition of 1.2 M aq HCl solution (4.3 mL) the mixture extracted with dichloromethane (2×40 mL) Combined organics were dried over sodium sulphate filtered filtrate solvents evaporated in vacuo

反応条件: temp:100.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: 2-bromoethyl methyl ether (0.07 mL, 0.74 mmol) was added to a mixture of potassium carbonate (136 mg, 0.99 mmol) and 3-bromo-4-methoxy-phenol (100 mg, 0.49 mmol) in DMF (2 mL) and mix heated at 100° C. for 1 hr. Reaction mixture was allowed to cool and partitioned between ethyl acetate (20 mL×2) and water (20 mL). The combined organic phases were washed with sat. aqueous sodium chloride solution (40 mL) and dried over sodium sulphate. Solvents were removed in vacuo to afford a crude oil which was purified by flash chromatography on silica gel, eluting with a gradient of 0-10% ethyl acetate in hexane to afford the title compound (113 mg, 88%) as a colourless liquid. mix Reaction mixture to cool partitioned between ethyl acetate (20 mL×2) and water (20 mL) The combined organic phases were washed with sat. aqueous sodium chloride solution (40 mL) dried over sodium sulphate Solvents were removed in vacuo to afford a crude oil which was purified by flash chromatography on silica gel eluting with a gradient of 0-10% ethyl acetate in hexane

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

実験手順: A solution of potassium hydroxide (290 mg, 5.19 mmol) in water (2.5 mL) was added to a solution of acetic acid 3-bromo-4-methoxy-phenyl ester (1.2 g, 4.9 mmol) in methanol (18.5 mL). Mixture was stirred at ambient temperature for 30 min, then solvents were removed in vacuo and water (40 mL) added. The mixture was made acidic by drop-wise addition of 1.2 M aq HCl solution (4.3 mL) and the mixture extracted with dichloromethane (2×40 mL). Combined organics were dried over sodium sulphate, filtered and filtrate solvents evaporated in vacuo to give the title compound (976 mg, 98%) as a pale yellow solid. solvents were removed in vacuo and water (40 mL) added The mixture was made acidic by drop-wise addition of 1.2 M aq HCl solution (4.3 mL) the mixture extracted with dichloromethane (2×40 mL) Combined organics were dried over sodium sulphate filtered filtrate solvents evaporated in vacuo