benzyl oxane-4-carboxylate

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:60.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: A mixture of tetrahydropyran-4-yl-carboxylic acid (910 mg, 6.99 mmol) and SOCl2 (5.0 mL) was stirred for 1 h at 60° C. and concentrated in vacuo. To the residue were added benzyl alcohol (1.52 g, 14.1 mmol) and tetrahydrofuran (5.0 mL) at ambient temperature. The resulting mixture was stirred for 13 h at ambient temperature and concentrated in vacuo. The residue was purified by preparative thin layer chromatography (silica gel, eluting with hexane/ethyl acetate (2:1)) to give 1.08 g (70%) of the title compound as a pale yellow oil. concentrated in vacuo The resulting mixture was stirred for 13 h at ambient temperature concentrated in vacuo The residue was purified by preparative thin layer chromatography (silica gel, eluting with hexane/ethyl acetate (2:1))

反応条件: temp:60.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: A mixture of tetrahydropyran-4-yl-carboxylic acid (910 mg, 6.99 mmol) and SOCl2 (5.0 mL) was stirred for 1 h at 60° C. and concentrated in vacuo. To the residue were added benzyl alcohol (1.52 g, 14.1 mmol) and tetrahydrofuran (5.0 mL) at ambient temperature. The resulting mixture was stirred for 13 h at ambient temperature and concentrated in vacuo. The residue was purified by preparative thin layer chromatography (silica gel, eluting with hexane/ethyl acetate (2:1)) to give 1.08 g (70%) of the title compound as a pale yellow oil. concentrated in vacuo The resulting mixture was stirred for 13 h at ambient temperature concentrated in vacuo The residue was purified by preparative thin layer chromatography (silica gel, eluting with hexane/ethyl acetate (2:1))

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:60.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: A mixture of tetrahydropyran-4-yl-carboxylic acid (910 mg, 6.99 mmol) and SOCl2 (5.0 mL) was stirred for 1 h at 60° C. and concentrated in vacuo. To the residue were added benzyl alcohol (1.52 g, 14.1 mmol) and tetrahydrofuran (5.0 mL) at ambient temperature. The resulting mixture was stirred for 13 h at ambient temperature and concentrated in vacuo. The residue was purified by preparative thin layer chromatography (silica gel, eluting with hexane/ethyl acetate (2:1)) to give 1.08 g (70%) of the title compound as a pale yellow oil. concentrated in vacuo The resulting mixture was stirred for 13 h at ambient temperature concentrated in vacuo The residue was purified by preparative thin layer chromatography (silica gel, eluting with hexane/ethyl acetate (2:1))

反応条件: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a solution of the compound (0.22 g) obtained in step 1 in THF (3.5 mL) was added dropwise at −78° C. lithium bis(trimethylsilyl)amide (1.1M THF solution, 1.82 mL), and the mixture was stirred for 30 min. The mixture was warmed to 0° C. and stirred for 15 min. The reaction mixture was cooled to −78° C., a solution of N-fluoro-N-(phenylsulfonyl)benzenesulfonamide (0.63 g) in THF (2.0 mL) was added dropwise, and the mixture was stirred at −78° C. for 1 hr. To the reaction mixture was added saturated aqueous ammonium chloride solution, and the mixture was diluted with water and extracted with ethyl acetate. The extract was washed with water and saturated brine, dried and concentrated under reduced pressure. The residue was separated and purified by silica gel column chromatography (solvent gradient; 0→20% ethyl acetate/hexane) to give benzyl 4-fluorotetrahydro-2H-pyran-4-carboxylate (0.10 g, 44%) as a colorless oil. stirred for 15 min The reaction mixture was cooled to −78° C. the mixture was stirred at −78° C. for 1 hr extracted with ethyl acetate The extract was washed with water and saturated brine dried concentrated under reduced pressure The residue was separated purified by silica gel column chromatography (solvent gradient; 0→20% ethyl acetate/hexane)

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

実験手順: To a mixture of tetrahydro-2H-pyran-4-carboxylic acid (4.8 g) and potassium carbonate (7.6 g) and DMF (73 mL) was added dropwise benzyl bromide (4.6 mL) at 0° C. The reaction mixture was stirred at room temperature for one day, diluted with ice water, and extracted with ethyl acetate. The extract was washed with water, 0.5N hydrochloric acid, water and saturated brine, dried and concentrated under reduced pressure. The obtained residue was separated and purified by silica gel column chromatography (solvent gradient; 0→20% ethyl acetate/hexane) to give benzyl tetrahydro-2H-pyran-4-carboxylate (7.6 g, 94%) as a colorless oil. extracted with ethyl acetate The extract was washed with water, 0.5N hydrochloric acid, water and saturated brine dried concentrated under reduced pressure The obtained residue was separated purified by silica gel column chromatography (solvent gradient; 0→20% ethyl acetate/hexane)

反応条件: temp:60.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: A mixture of tetrahydropyran-4-yl-carboxylic acid (910 mg, 6.99 mmol) and SOCl2 (5.0 mL) was stirred for 1 h at 60° C. and concentrated in vacuo. To the residue were added benzyl alcohol (1.52 g, 14.1 mmol) and tetrahydrofuran (5.0 mL) at ambient temperature. The resulting mixture was stirred for 13 h at ambient temperature and concentrated in vacuo. The residue was purified by preparative thin layer chromatography (silica gel, eluting with hexane/ethyl acetate (2:1)) to give 1.08 g (70%) of the title compound as a pale yellow oil. concentrated in vacuo The resulting mixture was stirred for 13 h at ambient temperature concentrated in vacuo The residue was purified by preparative thin layer chromatography (silica gel, eluting with hexane/ethyl acetate (2:1))

反応条件: temp:60.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: A mixture of tetrahydropyran-4-yl-carboxylic acid (910 mg, 6.99 mmol) and SOCl2 (5.0 mL) was stirred for 1 h at 60° C. and concentrated in vacuo. To the residue were added benzyl alcohol (1.52 g, 14.1 mmol) and tetrahydrofuran (5.0 mL) at ambient temperature. The resulting mixture was stirred for 13 h at ambient temperature and concentrated in vacuo. The residue was purified by preparative thin layer chromatography (silica gel, eluting with hexane/ethyl acetate (2:1)) to give 1.08 g (70%) of the title compound as a pale yellow oil. concentrated in vacuo The resulting mixture was stirred for 13 h at ambient temperature concentrated in vacuo The residue was purified by preparative thin layer chromatography (silica gel, eluting with hexane/ethyl acetate (2:1))