[4-(乙基氨基)丁基]氨基甲酸叔丁酯

反应条件: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A mixture of (4-amino-butyl)-carbamic acid tert-butyl ester (0.360 g, 1.91 mmol), acetaldehyde (0.085 g, 1.91 mmol) and K2CO3 (0.264 g, 1.91) in MeOH (5 mL) was stirred for 6 h. The mixture was filtered through a celite cake. The filtrate was cooled at 0° C. and NaBH4 (0.106 g, 2.08 mmol) was added. After the reaction mixture was stirred at 0° C. for 45 min water (20 mL) was added, and the mixture was extracted with CH2Cl2 (3×30 mL). The organic extracts were combined and dried over anhydrous Na2SO4. After filtration the solvent was removed by evaporation under vacuum, and the residue was purified by flash chromatography on a silica gel column (200:10:1 CH2Cl2/MeOH/NH4OH), affording (4-ethylamino-butyl)-carbamic acid tert-butyl ester as a colorless oil (0.215 g, 52%). The mixture was filtered through a celite cake was added the mixture was extracted with CH2Cl2 (3×30 mL) dried over anhydrous Na2SO4 After filtration the solvent was removed by evaporation under vacuum the residue was purified by flash chromatography on a silica gel column (200:10:1 CH2Cl2/MeOH/NH4OH)

反应条件: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A mixture of (4-amino-butyl)-carbamic acid tert-butyl ester (0.360 g, 1.91 mmol), acetaldehyde (0.085 g, 1.91 mmol) and K2CO3 (0.264 g, 1.91) in MeOH (5 mL) was stirred for 6 h. The mixture was filtered through a celite cake. The filtrate was cooled at 0° C. and NaBH4 (0.106 g, 2.08 mmol) was added. After the reaction mixture was stirred at 0° C. for 45 min water (20 mL) was added, and the mixture was extracted with CH2Cl2 (3×30 mL). The organic extracts were combined and dried over anhydrous Na2SO4. After filtration the solvent was removed by evaporation under vacuum, and the residue was purified by flash chromatography on a silica gel column (200:10:1 CH2Cl2/MeOH/NH4OH), affording (4-ethylamino-butyl)-carbamic acid tert-butyl ester as a colorless oil (0.215 g, 52%). The mixture was filtered through a celite cake was added the mixture was extracted with CH2Cl2 (3×30 mL) dried over anhydrous Na2SO4 After filtration the solvent was removed by evaporation under vacuum the residue was purified by flash chromatography on a silica gel column (200:10:1 CH2Cl2/MeOH/NH4OH)

反应条件: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A mixture of (4-amino-butyl)-carbamic acid tert-butyl ester (0.360 g, 1.91 mmol), acetaldehyde (0.085 g, 1.91 mmol) and K2CO3 (0.264 g, 1.91) in MeOH (5 mL) was stirred for 6 h. The mixture was filtered through a celite cake. The filtrate was cooled at 0° C. and NaBH4 (0.106 g, 2.08 mmol) was added. After the reaction mixture was stirred at 0° C. for 45 min water (20 mL) was added, and the mixture was extracted with CH2Cl2 (3×30 mL). The organic extracts were combined and dried over anhydrous Na2SO4. After filtration the solvent was removed by evaporation under vacuum, and the residue was purified by flash chromatography on a silica gel column (200:10:1 CH2Cl2/MeOH/NH4OH), affording (4-ethylamino-butyl)-carbamic acid tert-butyl ester as a colorless oil (0.215 g, 52%). The mixture was filtered through a celite cake was added the mixture was extracted with CH2Cl2 (3×30 mL) dried over anhydrous Na2SO4 After filtration the solvent was removed by evaporation under vacuum the residue was purified by flash chromatography on a silica gel column (200:10:1 CH2Cl2/MeOH/NH4OH)

反应条件: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A mixture of (4-amino-butyl)-carbamic acid tert-butyl ester (0.360 g, 1.91 mmol), acetaldehyde (0.085 g, 1.91 mmol) and K2CO3 (0.264 g, 1.91) in MeOH (5 mL) was stirred for 6 h. The mixture was filtered through a celite cake. The filtrate was cooled at 0° C. and NaBH4 (0.106 g, 2.08 mmol) was added. After the reaction mixture was stirred at 0° C. for 45 min water (20 mL) was added, and the mixture was extracted with CH2Cl2 (3×30 mL). The organic extracts were combined and dried over anhydrous Na2SO4. After filtration the solvent was removed by evaporation under vacuum, and the residue was purified by flash chromatography on a silica gel column (200:10:1 CH2Cl2MeOH/NH4OH), affording (4-ethylamino-butyl)-carbamic acid tert-butyl ester as a colorless oil (0.215 g, 52%). The mixture was filtered through a celite cake was added the mixture was extracted with CH2Cl2 (3×30 mL) dried over anhydrous Na2SO4 After filtration the solvent was removed by evaporation under vacuum the residue was purified by flash chromatography on a silica gel column (200:10:1 CH2Cl2MeOH/NH4OH)

反应条件: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A mixture of (4-amino-butyl)-carbamic acid tert-butyl ester (0.360 g, 1.91 mmol), acetaldehyde (0.085 g, 1.91 mmol) and K2CO3 (0.264 g, 1.91) in MeOH (5 mL) was stirred for 6 h. The mixture was filtered through a celite cake. The filtrate was cooled at 0° C. and NaBH4 (0.106 g, 2.08 mmol) was added. After the reaction mixture was stirred at 0° C. for 45 min water (20 mL) was added, and the mixture was extracted with CH2Cl2 (3×30 mL). The organic extracts were combined and dried over anhydrous Na2SO4. After filtration the solvent was removed by evaporation under vacuum, and the residue was purified by flash chromatography on a silica gel column (200:10:1 CH2Cl2/MeOH/NH4OH), affording (4-ethylamino-butyl)-carbamic acid tert-butyl ester as a colorless oil (0.215 g, 52%). The mixture was filtered through a celite cake was added the mixture was extracted with CH2Cl2 (3×30 mL) dried over anhydrous Na2SO4 After filtration the solvent was removed by evaporation under vacuum the residue was purified by flash chromatography on a silica gel column (200:10:1 CH2Cl2/MeOH/NH4OH)