(2-phenoxyphenyl)methanol

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:0.00; pressure:0.00; stir:

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:0.00; pressure:0.00; stir:

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: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: Thionyl chloride (1.92 ml) was added in one portion to a solution of 2-phenoxybenzyl alcohol (4.80 g) in dry dichloromethane (50 ml). The resulting mixture was stirred at room temperature for 2 hours, then washed with water (×2), aqueous sodium bicarbonate (×2) and aqueous sodium chloride, dried and concentrated under reduced pressure to give 2-phenoxybenzyl chloride (4.87 g, 93%) as a colourless oil. washed with water (×2), aqueous sodium bicarbonate (×2) and aqueous sodium chloride dried concentrated under reduced pressure

反応条件: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: A 1 M solution of borane-tetrahydrofuran complex (30 ml) was added dropwise to a stirred solution of 2-phenoxybenzoic acid (5.35 g) in dry THF (50 ml), cooled to 0° C. (effervescence). Following the addition, the mixture was stirred at 0° C. for 15 minutes, then at room temperature for 1.5 hours. It was poured into water and extracted with ether. The extracts were washed successively with water, aqueous sodium bicarbonate, aqueous sodium carbonate, then dried and concentrated under reduced pressure to give 2-phenoxybenzyl alcohol (4.83 g, 97%) as a colourless oil. the addition at room temperature for 1.5 hours extracted with ether The extracts were washed successively with water, aqueous sodium bicarbonate, aqueous sodium carbonate dried concentrated under reduced pressure

反応条件: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: Phosphorus tribromide (5.5 ml, 57.1 mmol) was added dropwise over a period of 10 min to a solution of 2-phenoxybenzylalcohol (4.08 g, 20.4 mmol) in dioxane (165 ml). The reaction mixture was stirred for 40 min. Another portion of phosphorus tribromide (5.5 ml, 57.1 mmol) was added. The reaction mixture was stirred for 56 hours at room temperature. It was cooled to 0° C. Water (45 ml) was added carefully. The reaction mixture was stirred for 30 min at room temperature. The mixture was extracted with ethyl acetate (100 ml). The ethyl acetate phase was washed with 1 N hydrochloric acid. The combined aqueous layers were extracted with ethyl acetate. The combined organic layers were washed with a saturated aqueous soludtion of sodium hydrogen carbonate (100 ml) and dried over magnesium sulphate. The solvent was removed in vacuo. The crude product was purified by flash chromatography on silica (90 g), using ethyl acetate/heptane (1:3) as eluent, to give 4.80 g of 2-phenoxybenzyl bromide. The reaction mixture was stirred for 56 hours at room temperature The reaction mixture was stirred for 30 min at room temperature The mixture was extracted with ethyl acetate (100 ml) The ethyl acetate phase was washed with 1 N hydrochloric acid The combined aqueous layers were extracted with ethyl acetate The combined organic layers were washed with a saturated aqueous soludtion of sodium hydrogen carbonate (100 ml) dried over magnesium sulphate The solvent was removed in vacuo The crude product was purified by flash chromatography on silica (90 g)