5,8-dioxaspiro[3.4]octan-2-ylmethanol

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: Triphenylphosphine (6.28 gm, 24 mmol) in dichloromethane was added drop wise to a solution of 5,8-dioxaspiro[3.4]oct-2-ylmethanol (2.3 gm, 16 mmol) (step d) and tetrabromomethane (6.62 gm, 20 mmol) in dichloromethane. The reaction mixture was stirred at room temperature for about 6 hours. The solvent was removed under reduced pressure and the residue was extracted with diethyl ether. The organic layer was concentrated under reduced pressure to get a crude product, which was purified by column chromatography. The solvent was removed under reduced pressure the residue was extracted with diethyl ether The organic layer was concentrated under reduced pressure

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

実験手順: Palladium/carbon (10%) was added to a solution of 2-[(benzyloxy)methyl]-5,8-dioxaspiro[3.4]octane (22.0 gm, 94.0 mmol) (step c) in methanol and the mixture was stirred at room temperature under hydrogen balloon for about 4 hours. It was filtered through celite bed and residue was washed with methanol. The combined filtrate was concentrated under reduced pressure. It was filtered through celite bed and residue was washed with methanol The combined filtrate was concentrated under reduced pressure