ethyl 3,3,3-trifluoro-2-phenylpropanoate

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

実験手順: A 20% solution of diisobutylaluminium hydride in n-hexane (53.4 ml) was added, dropwise, to ethyl α-trifluoromethylphenylacetate (2.9 g; 12.5 mmol) (T. S. Everett, S. T. Purrington, C. L. Baumgardner, J. Org. Chem. 49, 3702 (1984)) in absolute tetrahydrofuran (50 ml) at about 60° C. The mixture was then allowed to rise to room temperature and stirred for an hour at this temperature. Then at a temperature of 5°-10° C., methanol (10.5 ml) followed by 10% aqueous potassium hydroxide (5.3 ml) was added, dropwise. After 1.5 hours, the mixture was filtered and the filtrate dried over sodium sulphate which was washed with ethyl acetate and the organic phase concentrated. There was obtained 2-phenyl-2-trifluoromethylethanol (2.07 g=87.1 of theory). at about 60° C to rise to room temperature was added the mixture was filtered the filtrate dried over sodium sulphate which was washed with ethyl acetate the organic phase concentrated

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

実験手順: A 20% solution of diisobutylaluminium hydride in n-hexane (53.4 ml) was added, dropwise, to ethyl α-trifluoromethylphenylacetate (2.9 g; 12.5 mmol) (T. S. Everett, S. T. Purrington, C. L. Baumgardner, J. Org. Chem. 49, 3702 (1984)) in absolute tetrahydrofuran (50 ml) at about 60° C. The mixture was then allowed to rise to room temperature and stirred for an hour at this temperature. Then at a temperature of 5°-10° C., methanol (10.5 ml) followed by 10% aqueous potassium hydroxide (5.3 ml) was added, dropwise. After 1.5 hours, the mixture was filtered and the filtrate dried over sodium sulphate which was washed with ethyl acetate and the organic phase concentrated. There was obtained 2-phenyl-2-trifluoromethylethanol (2.07 g=87.1 of theory). at about 60° C to rise to room temperature was added the mixture was filtered the filtrate dried over sodium sulphate which was washed with ethyl acetate the organic phase concentrated

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

実験手順: A 20% solution of diisobutylaluminium hydride in n-hexane (53.4 ml) was added, dropwise, to ethyl α-trifluoromethylphenylacetate (2.9 g; 12.5 mmol) (T. S. Everett, S. T. Purrington, C. L. Baumgardner, J. Org. Chem. 49, 3702 (1984)) in absolute tetrahydrofuran (50 ml) at about 60° C. The mixture was then allowed to rise to room temperature and stirred for an hour at this temperature. Then at a temperature of 5°-10° C., methanol (10.5 ml) followed by 10% aqueous potassium hydroxide (5.3 ml) was added, dropwise. After 1.5 hours, the mixture was filtered and the filtrate dried over sodium sulphate which was washed with ethyl acetate and the organic phase concentrated. There was obtained 2-phenyl-2-trifluoromethylethanol (2.07 g=87.1 of theory). at about 60° C to rise to room temperature was added the mixture was filtered the filtrate dried over sodium sulphate which was washed with ethyl acetate the organic phase concentrated

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

実験手順: A 20% solution of diisobutylaluminium hydride in n-hexane (53.4 ml) was added, dropwise, to ethyl α-trifluoromethylphenylacetate (2.9 g; 12.5 mmol) (T. S. Everett, S. T. Purrington, C. L. Baumgardner, J. Org. Chem. 49, 3702 (1984)) in absolute tetrahydrofuran (50 ml) at about 60° C. The mixture was then allowed to rise to room temperature and stirred for an hour at this temperature. Then at a temperature of 5°-10° C., methanol (10.5 ml) followed by 10% aqueous potassium hydroxide (5.3 ml) was added, dropwise. After 1.5 hours, the mixture was filtered and the filtrate dried over sodium sulphate which was washed with ethyl acetate and the organic phase concentrated. There was obtained 2-phenyl-2-trifluoromethylethanol (2.07 g=87.1 of theory). at about 60° C to rise to room temperature was added the mixture was filtered the filtrate dried over sodium sulphate which was washed with ethyl acetate the organic phase concentrated