3-乙基-3-氧杂丁环甲醇

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A solution of 4-iodobenzoyl chloride (11.5 gms) in dry ether (50 ml) was added to a stirred solution of 3-ethyl-3-hydroxymethyloxetane (5 gms) and pyridine (3.5 mls) in ether (100 ml) at 0° C. The resulting mixture was allowed to warm to room temperature and stirred for 24 hours. After this time the mixture was washed with water and brine. The organic extracts were dried over anhydrous magnesium sulphate and then evaporated in vacuo. The residue was purified by column chromatography on silica (preeluted with 1% triethylamine in hexane) and eluted with 5% ethyl acetate in hexane. 3-Ethyl-3-(4-iodobenzoyloxymethyl) oxetane was obtained as a colourless oil (8.1 gms). After this time the mixture was washed with water and brine The organic extracts were dried over anhydrous magnesium sulphate evaporated in vacuo The residue was purified by column chromatography on silica (preeluted with 1% triethylamine in hexane) eluted with 5% ethyl acetate in hexane

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Nicotinyl chloride hydrochloride (8.9 gm.) was added to a stirred solution of 3-ethyl-3-hydroxymethyloxetane (5.8 gm.) and dry pyridine (20 ml.) in dry dichloromethane (150 ml.) at 0°. The mixture was stirred at room temperature for 4 days and poured into aqueous sodium carbonate solution. The aqueous mixture was extracted with dichloromethane. The extracts were washed with water and dried over anhydrous magnesium sulphate. The solvent was removed in vacuo. The residue was purified by chromatography on silica eluting with 5% triethylamine in dichloromethane. (3-Ethyloxetan-3-yl)methyl 3-pyridinecarboxylate was obtained as a pale yellow oil (7.0 gm.). The aqueous mixture was extracted with dichloromethane The extracts were washed with water dried over anhydrous magnesium sulphate The solvent was removed in vacuo The residue was purified by chromatography on silica eluting with 5% triethylamine in dichloromethane

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a mixture of (3-ethyl-oxetan-3-yl)-methanol (11.6 g, 0.1 mol) and DMAP (18.3 g, 0.15 mol) in DCM (100 mL) was added 4-methyl-benzenesulfonyl chloride (19 g, 0.1 mol). The mixture was stirred at room temperature for 1 h, then filtered. The filtrate was washed with HCl aq. (1 M) and water, dried over anhydrous Na2SO4 and concentrated to give the title compound (19 g). filtered The filtrate was washed with HCl aq. (1 M) and water dried over anhydrous Na2SO4 concentrated

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A solution of 4-iodobenzoyl chloride (11.5 gms) in dry ether (50 ml) was added to a stirred solution of 3-ethyl-3-hydroxymethyloxetane (5 gms) and pyridine (3.5 mls) in ether (100 ml) at 0° C. The resulting mixture was allowed to warm to room temperature and stirred for 24 hours. After this time the mixture was washed with water and brine. The organic extracts were dried over anhydrous magnesium sulphate and then evaporated in vacuo. The residue was purified by column chromatography on silica (preeluted with 1% triethylamine in hexane) and eluted with 5% ethyl acetate in hexane. 3-Ethyl-3-(4-iodobenzoyloxymethyl) oxetane was obtained as a colourless oil (8.1 gms). After this time the mixture was washed with water and brine The organic extracts were dried over anhydrous magnesium sulphate evaporated in vacuo The residue was purified by column chromatography on silica (preeluted with 1% triethylamine in hexane) eluted with 5% ethyl acetate in hexane