原甲酸三丙酯

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

实验步骤: A mixture of 6.6 g of hypophosphorous acid (95% solution in water) and 86 g of tri-n-propyl orthoformate is treated with 0.77 ml of trifluoracetic acid. The two-phase mixture is stirred at room temperature for 48-72 hours until the reaction is complete. This can be monitored by 31P-NMR or thin layer chromatography. The reaction mixture is diluted with 200 ml of dichloromethane and washed twice with 150 ml of a saturated aqueous solution of sodium bicarbonate. After driving the dichloromethane layer over anhydrous magnesium sulphate and removal of the solvent in vacuo, a colorless oil is obtained which after distillation affords di-n-propyloxymethylphosphonous acid n-propyl ester, b.p. 45°/2×104 mbar. washed twice with 150 ml of a saturated aqueous solution of sodium bicarbonate over anhydrous magnesium sulphate and removal of the solvent in vacuo a colorless oil is obtained which after distillation

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

实验步骤: A mixture of 6.6 g of hypophosphorous acid (95% solution in water) and 86 g of tri-n-propyl orthoformate is treated with 0.77 ml of trifluoracetic acid. The two-phase mixture is stirred at room temperature for 48-72 hours until the reaction is complete. This can be monitored by 31P-NMR or thin layer chromatography. The reaction mixture is diluted with 200 ml of dichloromethane and washed twice with 150 ml of a saturated aqueous solution of sodium bicarbonate. After driving the dichloromethane layer over anhydrous magnesium sulphate and removal of the solvent in vacuo, a colorless oil is obtained which after distillation affords di-n-propyloxymethylphosphonous acid n-propyl ester, b.p. 45°/2×104 mbar. washed twice with 150 ml of a saturated aqueous solution of sodium bicarbonate over anhydrous magnesium sulphate and removal of the solvent in vacuo a colorless oil is obtained which after distillation

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

实验步骤: reacting tetrahydro-4H-pyran-4-one with tripropylorthoformate and chlorobenzene to form 4-propoxytetrahydro-2H-pyran-ethene;

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

实验步骤: A mixture of 6.6 g of hypophosphorous acid (95% solution in water) and 86 gof tri-n-propyl orthoformate is treated with 0.77 ml of trifluoracetic acid. The two-phase mixture is stirred at room temperature for 48-72 hoursuntil the reaction is complete. This can be monitored by 31P-NMR or thin layer chromatography. The reaction mixture is diluted with 200 ml of dichloromethane and washed twice with 150 ml of a saturated aqueous solution of sodium bicarbonate. After drying the dichloromethane layer over anhydrous magnesius sulphate and removal of the solvent in vacuo, a colorless oil is obtained which after distillation affords di-n-propyloxymethylphosphonous acid n-propyl ester, b.p. 45°/2 ×104 mbar. washed twice with 150 ml of a saturated aqueous solution of sodium bicarbonate After drying the dichloromethane layer over anhydrous magnesius sulphate and removal of the solvent in vacuo a colorless oil is obtained which after distillation

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

实验步骤: A mixture of 6.6 g of hypophosphorous acid (95% solution in water) and 86 gof tri-n-propyl orthoformate is treated with 0.77 ml of trifluoracetic acid. The two-phase mixture is stirred at room temperature for 48-72 hoursuntil the reaction is complete. This can be monitored by 31P-NMR or thin layer chromatography. The reaction mixture is diluted with 200 ml of dichloromethane and washed twice with 150 ml of a saturated aqueous solution of sodium bicarbonate. After drying the dichloromethane layer over anhydrous magnesius sulphate and removal of the solvent in vacuo, a colorless oil is obtained which after distillation affords di-n-propyloxymethylphosphonous acid n-propyl ester, b.p. 45°/2 ×104 mbar. washed twice with 150 ml of a saturated aqueous solution of sodium bicarbonate After drying the dichloromethane layer over anhydrous magnesius sulphate and removal of the solvent in vacuo a colorless oil is obtained which after distillation

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

实验步骤: A mixture of 6.6 g of hypophosphorous acid (95% solution in water) and 6 g of tri-n-propyl orthoformate is treated with 0.77 ml of trifluoracetic acid. The two-phase mixture is stirred at room temperature for 48-72 hours until the reaction is complete. This can be monitored by 31P-NMR or thin layer chromatography. The reaction mixture is diluted with 200 ml of dichloromethane and washed twice with 150 ml of a saturated aqueous solution of sodium bicarbonate. After drying the dichloromethane layer over anhydrous magnesium sulphate and removal of the solvent in vacuo, a colorless oil is obtained which after distillation affords di-n-propyloxymethylphosphonous acid n-propyl ester, b.p. 45°/2×10 mbar. washed twice with 150 ml of a saturated aqueous solution of sodium bicarbonate After drying the dichloromethane layer over anhydrous magnesium sulphate and removal of the solvent in vacuo a colorless oil is obtained which after distillation

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

实验步骤: A mixture of 6.6 g of hypophosphorous acid (95% solution in water) and 86 g of tri-n-propyl orthoformate is treated with 0.77 ml of trifluoracetic acid. The two-phase mixture is stirred at room temperature for 48-72 hours until the reaction is complete. This can be monitored by 31P-NMR or thin layer chromatography. The reaction mixture is diluted with 200 ml of dichloromethane and washed twice with 150 ml of a saturated aqueous solution of sodium bicarbonate. After drying the dichloromethane layer over anhydrous magnesium sulphate and removal of the solvent in vacuo, a colorless oil is obtained which after distillation affords di-n-propyloxymethylphosphonous acid n-propyl ester, b.p. 45°/2×104 mbar. washed twice with 150 ml of a saturated aqueous solution of sodium bicarbonate After drying the dichloromethane layer over anhydrous magnesium sulphate and removal of the solvent in vacuo a colorless oil is obtained which after distillation

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

实验步骤: A mixture of 6.6 g of hypophosphorous acid (95% solution in water) and 86 g of tri-n-propyl orthoformate is treated with 0.77 ml of trifluoracetic acid. The two-phase mixture is stirred at room temperature for 48-72 hours until the reaction is complete. This can be monitored by 31P-NMR or thin layer chromatography. The reaction mixture is diluted with 200 ml of dichloromethane and washed twice with 150 ml of a saturated aqueous solution of sodium bicarbonate. After drying the dichloromethane layer over anhydrous magnesium sulphate and removal of the solvent in vacuo, a colorless oil is obtained which after distillation affords di-n-propyloxymethylphosphonous acid n-propyl ester, b.p. 45°/2×104 mbar. washed twice with 150 ml of a saturated aqueous solution of sodium bicarbonate After drying the dichloromethane layer over anhydrous magnesium sulphate and removal of the solvent in vacuo a colorless oil is obtained which after distillation

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

实验步骤: reacting tetrahyro-4H-pyran-4-one with tripropylorthoformate and chlorobenzene to form 4-propoxytetrahydro-2H-pyran-ethene;

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

实验步骤: A mixture of 6.6 g of hypophosphorous acid (95% solution in water) and 86 g of tri-n-propyl orthoformate is treated with 0.77 ml of trifluoracetic acid. The two-phase mixture is stirred at room temperature for 48-72 hours until the reaction is complete. This can be monitored by 31P-NMR or thin layer chromatography. The reaction mixture is diluted with 200 ml of dichloromethane and washed twice with 150 ml of a saturated aqueous solution of sodium bicarbonate. After driving the dichloromethane layer over anhydrous magnesium sulphate and removal of the solvent in vacuo, a colorless oil is obtained which after distillation affords di-n-propyloxymethylphosphonous acid n-propyl ester, b.p. 45°/2×104 mbar. washed twice with 150 ml of a saturated aqueous solution of sodium bicarbonate over anhydrous magnesium sulphate and removal of the solvent in vacuo a colorless oil is obtained which after distillation

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

实验步骤: reacting tetrahydro-4H-pyran-4-one with tripropylorthoformate and chlorobenzene to form 4-propoxytetrahydro-2H-pyran-ethene;

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

实验步骤: A mixture of 6.6 g of hypophosphorous acid (95% solution in water) and 86 gof tri-n-propyl orthoformate is treated with 0.77 ml of trifluoracetic acid. The two-phase mixture is stirred at room temperature for 48-72 hoursuntil the reaction is complete. This can be monitored by 31P-NMR or thin layer chromatography. The reaction mixture is diluted with 200 ml of dichloromethane and washed twice with 150 ml of a saturated aqueous solution of sodium bicarbonate. After drying the dichloromethane layer over anhydrous magnesius sulphate and removal of the solvent in vacuo, a colorless oil is obtained which after distillation affords di-n-propyloxymethylphosphonous acid n-propyl ester, b.p. 45°/2 ×104 mbar. washed twice with 150 ml of a saturated aqueous solution of sodium bicarbonate After drying the dichloromethane layer over anhydrous magnesius sulphate and removal of the solvent in vacuo a colorless oil is obtained which after distillation