雷贝拉唑杂质41

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: 20 ml of acetic anhydride was added to 760 mg (3.6 mmol) of 4-(3-methoxypropoxy)-2,3-dimethylpyridine N-oxide to carry out the reaction at 90° C. for one hour. The reaction mixture was distilled to remove the acetic anhydride, followed by the addition of a saturated aqueous solution of sodium hydrogencarbonate. The obtained mixture was extracted with chloroform. The extract was concentrated to obtain 700 mg of 2-acetoxymethyl-4-(3-methoxypropoxy)-3-methylpyridine as a brown oil. the reaction at 90° C. for one hour The reaction mixture was distilled to remove the acetic anhydride followed by the addition of a saturated aqueous solution of sodium hydrogencarbonate The obtained mixture was extracted with chloroform The extract was concentrated

反应条件: temp:60.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: 2.0 g (22 mmol) of 3-methoxypropanol was dissolved in 50 ml of dimethyl sulfoxide to obtain a solution. 2.7 g (66 mmol) of sodium hydride was added to this solution at a room temperature. The obtained mixture was stirred at 60° C. for one hour and cooled to a room temperature by allowing to stand, followed by the addition of 3.0 g (19 mmol) of 4-chloro-2,3-dimethylpyridine N-oxide. The obtained mixture was stirred at 40° C. for one hour. After the completion of the reaction, the reaction mixture was distilled to remove the dimethyl sulfoxide. The obtained residue was purified by silica gel column chromatography to obtain 760 mg of 4-(3-methoxypropoxy)-2,3-dimethylpyridine N-oxide. to obtain a solution cooled to a room temperature The obtained mixture was stirred at 40° C. for one hour After the completion of the reaction the reaction mixture was distilled to remove the dimethyl sulfoxide The obtained residue was purified by silica gel column chromatography

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

实验步骤: 20 ml of acetic anhydride was added to 760 mg (3.6 mmol) of 4-(3-methoxypropoxy)-2,3-dimethylpyridine N-oxide to carry out the reaction at 90° C. for one hour. The reaction mixture was distilled to remove the acetic anhydride, followed by the addition of a saturated aqueous solution of sodium hydrogencarbonate. The obtained mixture was extracted with chloroform. The extract was concentrated to obtain 700 mg of 2-acetoxymethyl-4-(3-methoxypropoxy)-3-methylpyridine as a brown oil. the reaction at 90° C. for one hour The reaction mixture was distilled to remove the acetic anhydride followed by the addition of a saturated aqueous solution of sodium hydrogencarbonate The obtained mixture was extracted with chloroform The extract was concentrated

反应条件: temp:60.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: 2.0 g (22 mmol) of 3-methoxypropanol was dissolved in 50 ml of dimethyl sulfoxide to obtain a solution. 2.7 g (66 mmol) of sodium hydride was added to this solution at a room temperature. The obtained mixture was stirred at 60° C. for one hour and cooled to a room temperature by allowing to stand, followed by the addition of 3.0 g (19 mmol) of 4-chloro-2,3-dimethylpyridine N-oxide. The obtained mixture was stirred at 40° C. for one hour. After the completion of the reaction, the reaction mixture was distilled to remove the dimethyl sulfoxide. The obtained residue was purified by silica gel column chromatography to obtain 760 mg of 4-(3-methoxypropoxy)-2,3-dimethylpyridine N-oxide. to obtain a solution cooled to a room temperature The obtained mixture was stirred at 40° C. for one hour After the completion of the reaction the reaction mixture was distilled to remove the dimethyl sulfoxide The obtained residue was purified by silica gel column chromatography

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

实验步骤: 20 ml of acetic anhydride was added to 760 mg (3.6 mmol) of 4-(3-methoxypropoxy)-2,3-dimethyl-pyridine N-oxide to carry out the reaction at 90° C. for one hour. The reaction mixture was distilled to remove the acetic anhydride, followed by the addition of a saturated aqueous solution of sodium hydrogen-carbonate. The obtained mixture was extracted with chloroform. The extract was concentrated to obtain 700 mg of 2-acetoxymethyl-4-(3-methoxypropoxy)-3-methylpyridine as a brown oil. 500 mg of sodium hydroxide and 15 cc of ethanol were added to the 2-acetoxymethyl-4-(3-methoxypropoxy)-3-methylpyridine prepared above. The obtained mixture was stirred at 50° C. for one hour. After the completion of the reaction, the reaction mixture was distilled to remove the ethanol, followed by the addition of water. The obtained mixture was extracted with chloroform. The obtained chloroform layer was concentrated to obtain 450 mg of 2-hydroxymethyl-4-(3-methoxypropoxy)-3-methylpyridine as a brown oil. the reaction at 90° C. for one hour The reaction mixture was distilled to remove the acetic anhydride followed by the addition of a saturated aqueous solution of sodium hydrogen-carbonate The obtained mixture was extracted with chloroform The extract was concentrated

反应条件: temp:60.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: 2.0 g (22 mmol) of 3-methoxypropanol was dissolved in 50 ml of dimethyl sulfoxide to obtain a solution. 2.7 g (66 mmol) of sodium hydride was added to this solution at a room temperature. The obtained mixture was stirred at 60° C. for one hour and cooled to a room temperature by allowing to stand, followed by the addition of 3.0 g (19 mmol) of 4-chloro-2,3-dimethylpyridine N-oxide. The obtained mixture was stirred at 40° C. for one hour. After the completion of the reaction, the reaction mixture was distilled to remove the dimethyl sulfoxide. The obtained residue was purified by silica gel column chromatography to obtain 760 mg of 4-(3-methoxypropoxy)-2,3-dimethyl-pyridine N-oxide. to obtain a solution cooled to a room temperature The obtained mixture was stirred at 40° C. for one hour After the completion of the reaction the reaction mixture was distilled to remove the dimethyl sulfoxide The obtained residue was purified by silica gel column chromatography

反应条件: temp:60.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: 2.0 g (22 mmol) of 3-methoxypropanol was dissolved in 50 ml of dimethyl sulfoxide to obtain a solution. 2.7 g (66 mmol) of sodium hydride was added to this solution at a room temperature. The obtained mixture was stirred at 60° C. for one hour and cooled to a room temperature by allowing to stand, followed by the addition of 3.0 g (19 mmol) of 4-chloro-2,3-dimethylpyridine N-oxide. The obtained mixture was stirred at 40° C. for one hour. After the completion of the reaction, the reaction mixture was distilled to remove the dimethyl sulfoxide. The obtained residue was purified by silica gel column chromatography to obtain 760 mg of 4-(3-methoxypropoxy)-2,3-dimethyl-pyridine N-oxide. to obtain a solution cooled to a room temperature The obtained mixture was stirred at 40° C. for one hour After the completion of the reaction the reaction mixture was distilled to remove the dimethyl sulfoxide The obtained residue was purified by silica gel column chromatography

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

实验步骤: 20 ml of acetic anhydride was added to 760 mg (3.6 mmol) of 4-(3-methoxypropoxy)-2,3-dimethylpyridine N-oxide to carry out the reaction at 90° C. for one hour. The reaction mixture was distilled to remove the acetic anhydride, followed by the addition of a saturated aqueous solution of sodium hydrogencarbonate. The obtained mixture was extracted with chloroform. The extract was concentrated to obtain 700 mg of 2-acetoxymethyl-4-(3-methoxypropoxy)-3-methylpyridine as a brown oil. the reaction at 90° C. for one hour The reaction mixture was distilled to remove the acetic anhydride followed by the addition of a saturated aqueous solution of sodium hydrogencarbonate The obtained mixture was extracted with chloroform The extract was concentrated

反应条件: temp:60.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: 2.0 g (22 mmol) of 3-methoxypropanol was dissolved in 50 ml of dimethyl sulfoxide to obtain a solution. 2.7 g (66 mmol) of sodium hydride was added to this solution at a room temperature. The obtained mixture was stirred at 60° C. for one hour and cooled to a room temperature by allowing to stand, followed by the addition of 3.0 g (19 mmol) of 4-chloro-2,3-dimethylpyridine N-oxide. The obtained mixture was stirred at 40° C. for one hour. After the completion of the reaction, the reaction mixture was distilled to remove the dimethyl sulfoxide. The obtained residue was purified by silica gel column chromatography to obtain 760 mg of 4-(3-methoxypropoxy)-2,3-dimethylpyridine N-oxide. to obtain a solution cooled to a room temperature The obtained mixture was stirred at 40° C. for one hour After the completion of the reaction the reaction mixture was distilled to remove the dimethyl sulfoxide The obtained residue was purified by silica gel column chromatography

反应条件: temp:60.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: 2.0 g (22 mmol) of 3-methoxypropanol was dissolved in 50 ml of dimethyl sulfoxide to obtain a solution. 2.7 g (66 mmol) of sodium hydride was added to this solution at a room temperature. The obtained mixture was stirred at 60° C. for one hour and cooled to a room temperature by allowing to stand, followed by the addition of 3.0 g (19 mmol) of 4-chloro-2,3-dimethylpyridine N-oxide. The obtained mixture was stirred at 40° C. for one hour. After the completion of the reaction, the reaction mixture was distilled to remove the dimethyl sulfoxide. The obtained residue was purified by silica gel column chromatography to obtain 760 mg of 4-(3-methoxypropoxy)-2,3-dimethylpyridine N-oxide. to obtain a solution cooled to a room temperature The obtained mixture was stirred at 40° C. for one hour After the completion of the reaction the reaction mixture was distilled to remove the dimethyl sulfoxide The obtained residue was purified by silica gel column chromatography

反应条件: temp:0.00; pressure:0.00; stir: