1-ethylcyclooctan-1-ol

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

実験手順: To a 500-mL 3-necked round bottom flask equipped with a 250-mL pressure equalizing addition funnel, a nitrogen inlet with thermocouple and an overhead stirrer was added 32.5 g (0.208 mol) of 1-ethyl-1-cyclooctanol and 100 mL of anhydrous tetrahydrofuran. The addition funnel was charged with 150 mL (0.239 mol, 15% excess) of n-butyllithium (1.6M in hexane) which was then added to the cooled alcohol over 2 hours. The addition funnel was then charged with a solution of 25 g (0.239 mol) of freshly distilled methacryloyl chloride in 50 mL of dry tetrahydrofuran which was then added slowly with cooling over 1.5 hours. The reaction mixture was allowed to warm to room temperature with stirring overnight after which 100 mL of saturated sodium bicarbonate was carefully added with stirring. The mixture was stirred for 1 hour at which time it was diluted with 500 mL of diethyl ether and the organics washed with water, brine and dried for 1 hour over anhydrous magnesium sulfate. Filtration and removal of the solvent at reduced pressure resulted in a light-colored oil which was distilled twice from Na2CO3 and phenothiazine through a based-washed 15-cm Vigreux to yield 24 g (51%) of the title compound (bp 84° C.@ 1 mmHg) as a clear, colorless oil. To a 500-mL 3-necked round bottom flask equipped with a 250-mL pressure addition funnel, a nitrogen inlet with thermocouple and an overhead stirrer was then added slowly with cooling over 1.5 hours was carefully added The mixture was stirred for 1 hour at which time it the organics washed with water, brine dried for 1 hour over anhydrous magnesium sulfate Filtration and removal of the solvent at reduced pressure resulted in a light-colored oil which was distilled twice from Na2CO3 and phenothiazine through a based-washed 15-cm Vigreux

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

実験手順: To a 1000-mL 3-necked round bottom flask equipped with a 500-mL pressure equalizing addition funnel, a nitrogen inlet with thermocouple and an overhead stirrer was added 100 g (0.79 mol) of cyclooctanone dissolved in 250 mL of dry tetrahydrofuran. The addition funnel was charged with 290 mL (0.869 mol, 10% excess) of ethyl magnesium bromide (2.0M solution in ether) which was then added to the cooled ketone over 2 hours. Stirring was continued at room temperature overnight followed by 8 hours at reflux. Excess Grignard reagent was discharged by the cautious addition of 100 mL of saturated sodium bicarbonate solution. The resulting suspension was filtered through a bed of Celite, the filtrate diluted with 500 mL of ether and the combined organics washed several times with saturated sodium bicarbonate, once with brine and then dried for 1 hr over anhydrous magnesium sulfate. Filtration and removal of the solvent at reduced pressure resulted in a light-colored oil which was distilled twice from Na2CO3 through a base-washed 15 cm Vigreux (bp 65° C.@ 1 mmHg) to yield 39 g (32%) of the title alcohol as a clear, colorless oil. To a 1000-mL 3-necked round bottom flask equipped with a 500-mL pressure addition funnel, a nitrogen inlet with thermocouple and an overhead stirrer followed by 8 hours at reflux The resulting suspension was filtered through a bed of Celite the filtrate diluted with 500 mL of ether the combined organics washed several times with saturated sodium bicarbonate, once with brine and then dried for 1 hr over anhydrous magnesium sulfate Filtration and removal of the solvent at reduced pressure resulted in a light-colored oil which was distilled twice from Na2CO3 through a base-washed 15 cm Vigreux (bp 65° C.@ 1 mmHg)

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

実験手順: To a 500-mL 3-necked round bottom flask equipped with a 250-mL pressure equalizing addition funnel, a nitrogen inlet with thermocouple and an overhead stirrer was added 32.5 g (0.208 mol) of 1-ethyl-1-cyclooctanol and 100 mL of anhydrous tetrahydrofuran. The addition funnel was charged with 150 mL (0.239 mol, 15% excess) of n-butyllithium (1.6M in hexane) which was then added to the cooled alcohol over 2 hours. The addition funnel was then charged with a solution of 25 g (0.239 mol) of freshly distilled methacryloyl chloride in 50 mL of dry tetrahydrofuran which was then added slowly with cooling over 1.5 hours. The reaction mixture was allowed to warm to room temperature with stirring overnight after which 100 mL of saturated sodium bicarbonate was carefully added with stirring. The mixture was stirred for 1 hour at which time it was diluted with 500 mL of diethyl ether and the organics washed with water, brine and dried for 1 hour over anhydrous magnesium sulfate. Filtration and removal of the solvent at reduced pressure resulted in a light-colored oil which was distilled twice from Na2CO3 and phenothiazine through a based-washed 15-cm Vigreux to yield 24 g (51%) of the title compound (bp 84° C. @ 1 mmHg) as a clear, colorless oil. To a 500-mL 3-necked round bottom flask equipped with a 250-mL pressure addition funnel, a nitrogen inlet with thermocouple and an overhead stirrer was then added slowly with cooling over 1.5 hours was carefully added The mixture was stirred for 1 hour at which time it the organics washed with water, brine dried for 1 hour over anhydrous magnesium sulfate Filtration and removal of the solvent at reduced pressure resulted in a light-colored oil which was distilled twice from Na2CO3 and phenothiazine through a based-washed 15-cm Vigreux

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

実験手順: To a 1000-mL 3-necked round bottom flask equipped with a 500-mL pressure equalizing addition funnel, a nitrogen inlet with thermocouple and an overhead stirrer was added 100 g (0.79 mol) of cyclooctanone dissolved in 250 mL of dry tetrahydrofuran. The addition funnel was charged with 290 mL (0.869 mol, 10% excess) of ethyl magnesium bromide (2.0M solution in ether) which was then added to the cooled ketone over 2 hours. Stirring was continued at room temperature overnight followed by 8 hours at reflux. Excess Grignard reagent was discharged by the cautious addition of 100 mL of saturated sodium bicarbonate solution. The resulting suspension was filtered through a bed of Celite, the filtrate diluted with 500 mL of ether and the combined organics washed several times with saturated sodium bicarbonate, once with brine and then dried for 1 hr over anhydrous magnesium sulfate. Filtration and removal of the solvent at reduced pressure resulted in a light-colored oil which was distilled twice from Na2CO3 through a base-washed 15 cm Vigreux (bp 65° C.@1 mmHg) to yield 39 g (32%) of the title alcohol as a clear, colorless oil. To a 1000-mL 3-necked round bottom flask equipped with a 500-mL pressure addition funnel, a nitrogen inlet with thermocouple and an overhead stirrer followed by 8 hours at reflux The resulting suspension was filtered through a bed of Celite the filtrate diluted with 500 mL of ether the combined organics washed several times with saturated sodium bicarbonate, once with brine and then dried for 1 hr over anhydrous magnesium sulfate Filtration and removal of the solvent at reduced pressure resulted in a light-colored oil which was distilled twice from Na2CO3 through a base-washed 15 cm Vigreux (bp 65° C.@1 mmHg)