乙基 3-(氧杂-4-基)丙酸甲酯

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

实验步骤: A solution of ethyl 3-(3,4,5,6-tetrahydro-2H-pyran-4-yl)acrylate (17 g) in ethanol (200 ml) is catalytically hydrogenated over 10% palladium-carbon (4 g, 50% wet) at room temperature under atmospheric pressure. After the absorption of hydrogen has ceased, the catalyst is removed by filtration and the filtrate is concentrated in vacuo. The oily residue is purified by vacuum distillation to give ethyl 3-(3,4,5,6-tetrahydro-2H-pyran-4-yl)propionate (15 g) as an oil. After the absorption of hydrogen the catalyst is removed by filtration the filtrate is concentrated in vacuo The oily residue is purified by vacuum distillation

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

实验步骤: A solution of ethyl 3-(3,4,5,6-tetrahydro-2H-pyran-4-yl)acrylate (17 g) in ethanol (200 ml) is catalytically hydrogenated over 10% palladium-carbon (4 g, 50% wet) at room temperature under atmospheric pressure. After the absorption of hydrogen has ceased, the catalyst is removed by filtration and the filtrate is concentrated in vacuo. The oily residue is purified by vacuum distillation to give ethyl 3-(3,4,5,6-tetrahydro-2H-pyran-4-yl)propionate (15 g) as an oil. After the absorption of hydrogen the catalyst is removed by filtration the filtrate is concentrated in vacuo The oily residue is purified by vacuum distillation

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

实验步骤: In 200 ml of ethanol is dissolved 17 g of ethyl 3-(3,4,5,6-tetrahydro-2H-pyran -4-yl)acrylate, and a catalytic reduction reaction is carried out at ordinary temperature and at atmospheric pressure using 4 g of 10% palladium-carbon (50% in water) as a catalyst. After absorption of hydrogen stops, the catalyst is removed by filtration, and the filtrate is concentrated under reduced pressure. The residue is distilled under vacuum to give 15 g (bp 121-123°/16 mmHg)of ethyl 3-(3,4,5,6-tetrahydro-2H-pyran -4-yl)propionate as an oily material. a catalytic reduction reaction After absorption of hydrogen the catalyst is removed by filtration the filtrate is concentrated under reduced pressure The residue is distilled under vacuum

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

实验步骤: In 200 ml of ethanol is dissolved 17 g of ethyl 3-(3,4,5,6-tetrahydro-2H-pyran-4-yl)acrylate, and a catalytic reduction reaction is carried out at ordinary temperature and at atmospheric pressure using 4 g of 10% palladium-carbon (50% in water) as a catalyst. After absorption of hydrogen stops, the catalyst is removed by filtration, and the filtrate is concentrated under reduced pressure. The residue is distilled under vacuum to give 15 g (bp 121°-123°/16 mmHg) of ethyl 3-(3,4,5,6-tetrahydro-2H-pyran-4-yl)propionate as an oily material. a catalytic reduction reaction After absorption of hydrogen the catalyst is removed by filtration the filtrate is concentrated under reduced pressure The residue is distilled under vacuum

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

实验步骤: A solution of ethyl 3-(3,4,5,6-tetrahydro-2H-pyran-4-yl)acrylate (17 g) in ethanol (200 ml) is catalytically hydrogenated over 10% palladium-carbon (4 g, 50% wet) at room temperature under atmospheric pressure. After the absorption of hydrogen has ceased, the catalyst is removed by filtration and the filtrate is concentrated in vacuo. The oily residue is purified by vacuum distillation to give ethyl 3-(3,4,5,6-tetrahydro-2H-pyran-4-yl)propionate (15 g) as an oil. After the absorption of hydrogen the catalyst is removed by filtration the filtrate is concentrated in vacuo The oily residue is purified by vacuum distillation

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

实验步骤: A solution of ethyl 3-(3,4,5,6-tetrahydro-2H-pyran-4-yl)acrylate (17 g) in ethanol (200 ml) is catalytically hydrogenated over 10% palladium-carbon (4 g, 50% wet) at room temperature under atmospheric pressure. After the absorption of hydrogen has ceased, the catalyst is removed by filtration and the filtrate is concentrated in vacuo. The oily residue is purified by vacuum distillation to give ethyl 3-(3,4,5,6-tetrahydro-2H-pyran-4-yl)propionate (15 g) as an oil. After the absorption of hydrogen the catalyst is removed by filtration the filtrate is concentrated in vacuo The oily residue is purified by vacuum distillation

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

实验步骤: A solution of ethyl 3-(3,4,5,6-tetrahydro-2H-pyran-4-yl)acrylate (17 g) in ethanol (200 ml) is catalytically hydrogenated over 10% palladium-carbon (4 g, 50% wet) at room temperature under atmospheric pressure. After the absorption of hydrogen has ceased, the catalyst is removed by filtration and the filtrate is concentrated in vacuo. The oily residue is purified by vacuum distillation to give ethyl 3-(3,4,5,6-tetrahydro-2H-pyran-4-yl)propionate (15 g) as an oil. After the absorption of hydrogen the catalyst is removed by filtration the filtrate is concentrated in vacuo The oily residue is purified by vacuum distillation

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

实验步骤: In 200 ml of ethanol is dissolved 17 g of ethyl 3-(3,4,5,6-tetrahydro-2H-pyran -4-yl)acrylate, and a catalytic reduction reaction is carried out at ordinary temperature and at atmospheric pressure using 4 g of 10% palladium-carbon (50% in water) as a catalyst. After absorption of hydrogen stops, the catalyst is removed by filtration, and the filtrate is concentrated under reduced pressure. The residue is distilled under vacuum to give 15 g (bp 121-123°/16 mmHg)of ethyl 3-(3,4,5,6-tetrahydro-2H-pyran -4-yl)propionate as an oily material. a catalytic reduction reaction After absorption of hydrogen the catalyst is removed by filtration the filtrate is concentrated under reduced pressure The residue is distilled under vacuum

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

实验步骤: In 200 ml of ethanol is dissolved 17 g of ethyl 3-(3,4,5,6-tetrahydro-2H-pyran-4-yl)acrylate, and a catalytic reduction reaction is carried out at ordinary temperature and at atmospheric pressure using 4 g of 10% palladium-carbon (50% in water) as a catalyst. After absorption of hydrogen stops, the catalyst is removed by filtration, and the filtrate is concentrated under reduced pressure. The residue is distilled under vacuum to give 15 g (bp 121°-123°/16 mmHg) of ethyl 3-(3,4,5,6-tetrahydro-2H-pyran-4-yl)propionate as an oily material. a catalytic reduction reaction After absorption of hydrogen the catalyst is removed by filtration the filtrate is concentrated under reduced pressure The residue is distilled under vacuum

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

实验步骤: A solution of ethyl 3-(3,4,5,6-tetrahydro-2H-pyran-4-yl)acrylate (17 g) in ethanol (200 ml) is catalytically hydrogenated over 10% palladium-carbon (4 g, 50% wet) at room temperature under atmospheric pressure. After the absorption of hydrogen has ceased, the catalyst is removed by filtration and the filtrate is concentrated in vacuo. The oily residue is purified by vacuum distillation to give ethyl 3-(3,4,5,6-tetrahydro-2H-pyran-4-yl)propionate (15 g) as an oil. After the absorption of hydrogen the catalyst is removed by filtration the filtrate is concentrated in vacuo The oily residue is purified by vacuum distillation

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

实验步骤: A solution of ethyl 3-(3,4,5,6-tetrahydro-2H-pyran-4-yl)acrylate (17 g) in ethanol (200 ml) is catalytically hydrogenated over 10% palladium-carbon (4 g, 50% wet) at room temperature under atmospheric pressure. After the absorption of hydrogen has ceased, the catalyst is removed by filtration and the filtrate is concentrated in vacuo. The oily residue is purified by vacuum distillation to give ethyl 3-(3,4,5,6-tetrahydro-2H-pyran-4-yl)propionate (15 g) as an oil. After the absorption of hydrogen the catalyst is removed by filtration the filtrate is concentrated in vacuo The oily residue is purified by vacuum distillation