2-Benzyloxybenzyl Alcohol

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: To a solution of 46.5 (0.217 mole) 2-benzyloxybenzyl alcohol (prepared by reaction of 2-hydroxybenzyl alcohol with benzyl chloride in ethanol containing an equimolar amount of potassium t-butoxide at 100° C.) in 100 ml chloroform was added 17.2 g (0.217 mole) pyridine followed by dropwise addition of a solution of 25.8 g (0.217 mole) thionyl chloride in 60 ml chloroform. The resulting mixture was heated at reflux for 1.5 hours, cooled, washed with water, brine and dried (MgSO4). Evaporation of solvent gave 45.8 g crude oil which was distilled in vacuo to yield 40.7 g (81%) of product as a colorless oil, b.p. 141° C.(1 Torr). The resulting mixture was heated at reflux for 1.5 hours cooled washed with water, brine dried (MgSO4) Evaporation of solvent gave 45.8 g crude oil which was distilled in vacuo

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

実験手順: To a solution of 46.5 (0.217 mole) 2-benzyloxybenzyl alcohol (prepared by reaction of 2-hydroxybenzyl alcohol with benzyl chloride in ethanol containing an equimolar amount of potassium t-butoxide at 100° C.) in 100 ml chloroform was added 17.2 g (0.217 mole) pyridine followed by dropwise addition of a solution of 25.8 g (0.217 mole) thionyl chloride in 60 ml chloroform. The resulting mixture was heated at reflux for 1.5 hours, cooled, washed with water, brine and dried (MgSO4). Evaporation of solvent gave 45.8 g crude oil which was distilled in vacuo to yield 40.7 g (81%) of product as a colorless oil, b.p. 141° C.(1 Torr). The resulting mixture was heated at reflux for 1.5 hours cooled washed with water, brine dried (MgSO4) Evaporation of solvent gave 45.8 g crude oil which was distilled in vacuo

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

実験手順: The whole of the 2-benzyloxybenzyl alcohol thus obtained was dissolved in 500 ml of tetrahydrofuran, and 85 ml of thionyl chloride were added dropwise, whilst ice-cooling, to the resulting solution. The reaction mixture was then allowed to stand overnight at room temperature, after which it was concentrated by evaporation under reduced pressure to give a dark colored oil. This product was dissolved in toluene, and the solution was decolorized by treating it with silica gel for chromatography followed by filtration. The filtrate was concentrated by evaporation under reduced pressure to give 2-benzyloxybenzyl chloride as a yellow oil, which was used in the following reaction without further purification. cooling, to the resulting solution after which it was concentrated by evaporation under reduced pressure to give a dark colored oil by treating it with silica gel for chromatography followed by filtration The filtrate was concentrated by evaporation under reduced pressure

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

実験手順: 151 g of potassium t-butoxide were added, whilst ice-cooling and stirring, to a solution of 152 g of salicyl alcohol in 600 ml of dimethylformamide, and the resulting mixture was stirred at room temperature for 30 minutes; 160 ml of benzyl bromide were then added dropwise to the mixture. The reaction mixture was then stirred at a temperature of from 30° to 40° C. for 2 hours, after which it was partitioned between ethyl acetate and water. The organic layer was washed twice, each time with a saturated aqueous solution of sodium chloride, dried over anhydrous magnesium sulfate, and concentrated by evaporation under reduced pressure. The oily residue thus obtained was subjected to column chromatography through silica gel, using a 5:1 by volume mixture of hexane and ethyl acetate as the eluent, to give 228.5 g (yield 87%) of 2-benzyloxybenzyl alcohol as a colorless oil. cooling The reaction mixture was then stirred at a temperature of from 30° to 40° C. for 2 hours after which it was partitioned between ethyl acetate and water The organic layer was washed twice each time with a saturated aqueous solution of sodium chloride, dried over anhydrous magnesium sulfate concentrated by evaporation under reduced pressure The oily residue thus obtained

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

実験手順: To a solution of 46.5 (0.217 mole) 2-benzyloxybenzyl alcohol (prepared by reaction of 2-hydroxybenzyl alcohol with benzyl chloride in ethanol containing an equimolar amount of potassium t-butoxide at 100° C.) in 100 ml chloroform was added 17.2 g (0.217 mole) pyridine followed by dropwise addition of a solution of 25.8 g (0.217 mole) thionyl chloride in 60 ml chloroform. The resulting mixture was heated at reflux for 1.5 hours, cooled, washed with water, brine and dried (MgSO4). Evaporation of solvent gave 45.8 g crude oil which was distilled in vacuo to yield 40.7 g (81%) of product as a colorless oil, b.p. 141° C.(1 Torr). The resulting mixture was heated at reflux for 1.5 hours cooled washed with water, brine dried (MgSO4) Evaporation of solvent gave 45.8 g crude oil which was distilled in vacuo

反応条件: temp:0.00; pressure:0.00; stir: