(2R,6S)-4-苯甲基-2,6-二甲基吗啉

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: 4-Benzyl-2,6-dimethylmorpholine (10.72 mg, 45.76 mmol) was dissolved in acetic acid (10 mL) and ethanol (200 mL), and 10% palladium hydroxide/carbon (5 g) was added thereto. The mixture was stirred for two days at room temperature under a hydrogen stream at normal pressure. The catalyst was separated by filtration, and then the reaction liquor was concentrated under reduced pressure and dried, to obtain the title compound (7.36 g, 92%) as an oily matter. This compound was used in the subsequent reaction without performing further purification. The catalyst was separated by filtration the reaction liquor was concentrated under reduced pressure dried

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

实验步骤: To a tetrahydrofuran solution (500 mL) of 2,6-dimethylmorpholine (Aldrich Co.) (mixture of cis/trans isomers) (25.02 g, 217.24 mmol), triethylamine (51.48 mL, 369.31 mmol) was added at room temperature, and the mixture was stirred for 15 minutes. Then, benzyl bromide (43.93 mL, 369.31 mmol) was added dropwise over 30 minutes, and the mixture was stirred for 4 days. A saturated aqueous solution of sodium hydrogen carbonate (200 mL) was added to the reaction liquor, and the mixture was stirred for 30 minutes, and then extracted with ethyl acetate. The extract was washed with saturated brine, and dried over anhydrous sodium sulfate, and then the solvent was concentrated under reduced pressure. The obtained residue was purified by flash chromatography (Flash Chromatography System from Biotage AB, column size: 65i, n-hexane to ethyl acetate/n-hexane 1:1), to obtain the title compound (10.7 g, 24%) as an oily matter. the mixture was stirred for 4 days the mixture was stirred for 30 minutes extracted with ethyl acetate The extract was washed with saturated brine dried over anhydrous sodium sulfate the solvent was concentrated under reduced pressure The obtained residue was purified by flash chromatography (Flash Chromatography System from Biotage AB, column size: 65i, n-hexane to ethyl acetate/n-hexane 1:1)

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

实验步骤: To a tetrahydrofuran solution (500 mL) of 2,6-dimethylmorpholine (Aldrich Co.) (mixture of cis/trans isomers) (25.02 g, 217.24 mmol), triethylamine (51.48 mL, 369.31 mmol) was added at room temperature, and the mixture was stirred for 15 minutes. Then, benzyl bromide (43.93 mL, 369.31 mmol) was added dropwise over 30 minutes, and the mixture was stirred for 4 days. A saturated aqueous solution of sodium hydrogen carbonate (200 mL) was added to the reaction liquor, and the mixture was stirred for 30 minutes, and then extracted with ethyl acetate. The extract was washed with saturated brine, and dried over anhydrous sodium sulfate, and then the solvent was concentrated under reduced pressure. The obtained residue was purified by flash chromatography (Flash Chromatography System from Biotage AB, column size: 65i, n-hexane to ethyl acetate/n-hexane 1:1), to obtain the title compound (10.7 g, 24%) as an oily matter. the mixture was stirred for 4 days the mixture was stirred for 30 minutes extracted with ethyl acetate The extract was washed with saturated brine dried over anhydrous sodium sulfate the solvent was concentrated under reduced pressure The obtained residue was purified by flash chromatography (Flash Chromatography System from Biotage AB, column size: 65i, n-hexane to ethyl acetate/n-hexane 1:1)

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: 4-Benzyl-2,6-dimethylmorpholine (10.72 mg, 45.76 mmol) was dissolved in acetic acid (10 mL) and ethanol (200 mL), and 10% palladium hydroxide/carbon (5 g) was added thereto. The mixture was stirred for two days at room temperature under a hydrogen stream at normal pressure. The catalyst was separated by filtration, and then the reaction liquor was concentrated under reduced pressure and dried, to obtain the title compound (7.36 g, 92%) as an oily matter. This compound was used in the subsequent reaction without performing further purification. The catalyst was separated by filtration the reaction liquor was concentrated under reduced pressure dried

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

实验步骤: To a tetrahydrofuran solution (500 mL) of 2,6-dimethylmorpholine (Aldrich Co.) (mixture of cis/trans isomers) (25.02 g, 217.24 mmol), triethylamine (51.48 mL, 369.31 mmol) was added at room temperature, and the mixture was stirred for 15 minutes. Then, benzyl bromide (43.93 mL, 369.31 mmol) was added dropwise over 30 minutes, and the mixture was stirred for 4 days. A saturated aqueous solution of sodium hydrogen carbonate (200 mL) was added to the reaction liquor, and the mixture was stirred for 30 minutes, and then extracted with ethyl acetate. The extract was washed with saturated brine, and dried over anhydrous sodium sulfate, and then the solvent was concentrated under reduced pressure. The obtained residue was purified by flash chromatography (Flash Chromatography System from Biotage AB, column size: 65i, n-hexane to ethyl acetate/n-hexane 1:1), to obtain the title compound (10.7 g, 24%) as an oily matter. the mixture was stirred for 4 days the mixture was stirred for 30 minutes extracted with ethyl acetate The extract was washed with saturated brine dried over anhydrous sodium sulfate the solvent was concentrated under reduced pressure The obtained residue was purified by flash chromatography (Flash Chromatography System from Biotage AB, column size: 65i, n-hexane to ethyl acetate/n-hexane 1:1)