Hydrochloric Acid → 3-(cyclohexyloxy)propan-1-ol

14.0 ml (14.0 mmol) of a 1M hexane solution of diisobutylaluminum hydride were added dropwise over a period of 5 minutes to a solution of 1.01 g (647 mmol) of 1,5-dioxaspiro[5.5]-undecane in 5 ml of methylene chloride, and the resulting mixture was stirred for 1 hour at room temperature. At the end of this time, the reaction mixture was ice-cooled and 20 ml of methanol were added dropwise over a period of 5 minutes in order to stop the reaction. The mixture was stirred for 20 minutes at room temperature, and then 2N aqueous hydrochloric acid was added to dissolve the precipitate. The mixture was then extracted with diethyl ether. The extract was washed with water, with a saturated aqueous solution of sodium hydrogencarbonate and with a saturated aqueous solution of sodium chloride, in that order. The organic phase was dried over anhydrous magnesium sulfate, and the solvent was removed by distillation under reduced pressure. The resulting residue was purified by column chromatography through 25 g of silica gel, using a 3:1 by volume mixture of diethyl ether and hexane as the eluent, to give 774 mg (yield 76%) of the title alcohol derivative as an oil.

1. temperaturecooled
2. customthe reaction
3. stirringThe mixture was stirred for 20 minutes at room temperature
4. dissolutionto dissolve the precipitate
5. extractionThe mixture was then extracted with diethyl ether
6. washThe extract was washed with water, with a saturated aqueous solution of sodium hydrogencarbonate and with a saturated aqueous solution of sodium chloride, in that order
7. dry with materialThe organic phase was dried over anhydrous magnesium sulfate
8. customthe solvent was removed by distillation under reduced pressure
9. customThe resulting residue was purified by column chromatography through 25 g of silica gel
10. additionby volume mixture of diethyl ether and hexane as the eluent

ORD record

ord-a89ae592c4ef4128924ecc660c3186c3

Source dataset

uspto-grants-1996_07

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US05534529