N-(叔丁基)醋酸羟胺

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

实验步骤: To a solution of N-tert-butylhydroxylamine (145 mg, 1.62 mmol) (prepared from commercially available N-tert-butylhydroxylamine acetate (Aldrich) by adding saturated sodium bicarbonate solution and extracting the free base with ethyl ether) in anhydrous THF (10 mL) was added sodium hydride (58.4 mg, 1.46 mmol). The mixture was stirred at 0° C. for 20 minutes. A solution of Example 153A (350 mg, 0.81 mmol) in THF (4 mL) was added and the mixture was stirred at 0° C. for 3 hours. The solvent was removed under reduced pressure and the residue was partitioned between water and ethyl acetate. The organic layer was washed with brine, dried with MgSO4, filtered, and concentrated under reduced pressure. The residue was purified by chromatography on SiO2 using an Analogix® Intelliflash280™ (Hexanes-EtOAc: 0-50% gradient) to give the title compound. 1H NMR (300 MHz, CDCl3) δ ppm 1.22 (s, 9H), 1.42 (s, 9H), 1.74-1.89 (m, 1H), 1.88-2.08 (m, 3H), 3.74-3.84 (m, 1H), 3.89-4.00 (m, 1H), 4.29 (dd, J=12.0, 4.7 Hz, 1H), 4.45-4.63 (m, 2H), 5.73 (s, 1H), 7.59 (dd, J=8.8, 3.1 Hz, 1H), 7.80 (d, J=8.8 Hz, 1H), 8.33 (d, J=2.4 Hz, 1H); MS (ESI) m/z 501 (M+H)+. extracting the free base with ethyl ether) in anhydrous THF (10 mL) the mixture was stirred at 0° C. for 3 hours The solvent was removed under reduced pressure the residue was partitioned between water and ethyl acetate The organic layer was washed with brine dried with MgSO4 filtered concentrated under reduced pressure The residue was purified by chromatography on SiO2 using an Analogix® Intelliflash280™ (Hexanes-EtOAc: 0-50% gradient)

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

实验步骤: To a solution of N-tert-butylhydroxylamine (145 mg, 1.62 mmol) (prepared from commercially available N-tert-butylhydroxylamine acetate (Aldrich) by adding saturated sodium bicarbonate solution and extracting the free base with ethyl ether) in anhydrous THF (10 mL) was added sodium hydride (58.4 mg, 1.46 mmol). The mixture was stirred at 0° C. for 20 minutes. A solution of Example 153A (350 mg, 0.81 mmol) in THF (4 mL) was added and the mixture was stirred at 0° C. for 3 hours. The solvent was removed under reduced pressure and the residue was partitioned between water and ethyl acetate. The organic layer was washed with brine, dried with MgSO4, filtered, and concentrated under reduced pressure. The residue was purified by chromatography on SiO2 using an Analogix® Intelliflash280™ (Hexanes-EtOAc: 0-50% gradient) to give the title compound. 1H NMR (300 MHz, CDCl3) δ ppm 1.22 (s, 9H), 1.42 (s, 9H), 1.74-1.89 (m, 1H), 1.88-2.08 (m, 3H), 3.74-3.84 (m, 1H), 3.89-4.00 (m, 1H), 4.29 (dd, J=12.0, 4.7 Hz, 1H), 4.45-4.63 (m, 2H), 5.73 (s, 1H), 7.59 (dd, J=8.8, 3.1 Hz, 1H), 7.80 (d, J=8.8 Hz, 1H), 8.33 (d, J=2.4 Hz, 1H); MS (ESI) m/z 501 (M+H)+. extracting the free base with ethyl ether) in anhydrous THF (10 mL) the mixture was stirred at 0° C. for 3 hours The solvent was removed under reduced pressure the residue was partitioned between water and ethyl acetate The organic layer was washed with brine dried with MgSO4 filtered concentrated under reduced pressure The residue was purified by chromatography on SiO2 using an Analogix® Intelliflash280™ (Hexanes-EtOAc: 0-50% gradient)

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

实验步骤: To a solution of N-tert-butylhydroxylamine (133 mg, 1.50 mmol) (prepared from commercially available N-tert-butylhydroxylamine acetate (Aldrich) by adding saturated sodium bicarbonate solution and extracting the free base with ethyl ether) in anhydrous THF (10 mL) was added sodium hydride (53.9 mg, 1.35 mmol). The mixture was stirred at 0° C. for 20 min. A solution of Example 151A (310 mg, 0.75 mmol) in THF (4 mL) was added and the mixture was stirred at 22° C. for 5 hours. The solvent was removed under reduced pressure and the residue was partitioned between water and ethyl acetate. The organic layer was washed with brine, dried with MgSO4 and concentrated under reduced pressure. The residue was purified by chromatography on SiO2 using an Analogix® Intelliflash280™ (Hexanes-EtOAc: 0-50% gradient) to give the title compound. 1H NMR (300 MHz, CDCl3) δ ppm 1.22 (s, 9H), 1.42 (s, 9H), 2.23-2.37 (m, 2H), 2.48 (t, J=7.1 Hz, 2H), 4.54 (t, J=6.5 Hz, 2H), 5.75 (s, 1H), 7.61 (dd, J=8.7, 2.4 Hz, 1H), 7.83 (d, J=8.7 Hz, 1H), 8.28 (d, J=2.4 Hz, 1H); MS (ESI) m/z 484 (M+H)+. extracting the free base with ethyl ether) in anhydrous THF (10 mL) the mixture was stirred at 22° C. for 5 hours The solvent was removed under reduced pressure the residue was partitioned between water and ethyl acetate The organic layer was washed with brine dried with MgSO4 concentrated under reduced pressure The residue was purified by chromatography on SiO2 using an Analogix® Intelliflash280™ (Hexanes-EtOAc: 0-50% gradient)

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

实验步骤: To a solution of N-tert-butylhydroxylamine (145 mg, 1.62 mmol) (prepared from commercially available N-tert-butylhydroxylamine acetate (Aldrich) by adding saturated sodium bicarbonate solution and extracting the free base with ethyl ether) in anhydrous THF (10 mL) was added sodium hydride (58.4 mg, 1.46 mmol). The mixture was stirred at 0° C. for 20 minutes. A solution of Example 153A (350 mg, 0.81 mmol) in THF (4 mL) was added and the mixture was stirred at 0° C. for 3 hours. The solvent was removed under reduced pressure and the residue was partitioned between water and ethyl acetate. The organic layer was washed with brine, dried with MgSO4, filtered, and concentrated under reduced pressure. The residue was purified by chromatography on SiO2 using an Analogix® Intelliflash280™ (Hexanes-EtOAc: 0-50% gradient) to give the title compound. 1H NMR (300 MHz, CDCl3) δ ppm 1.22 (s, 9H), 1.42 (s, 9H), 1.74-1.89 (m, 1H), 1.88-2.08 (m, 3H), 3.74-3.84 (m, 1 H), 3.89-4.00 (m, 1H), 4.29 (dd, J=12.0, 4.7 Hz, 1H), 4.45-4.63 (m, 2H), 5.73 (s, 1H), 7.59 (dd, J=8.8, 3.1 Hz, 1H), 7.80 (d, J=8.8 Hz, 1H), 8.33 (d, J=2.4 Hz, 1H); MS (ESI) m/z 501 (M+H)−. extracting the free base with ethyl ether) in anhydrous THF (10 mL) the mixture was stirred at 0° C. for 3 hours The solvent was removed under reduced pressure the residue was partitioned between water and ethyl acetate The organic layer was washed with brine dried with MgSO4 filtered concentrated under reduced pressure The residue was purified by chromatography on SiO2 using an Analogix® Intelliflash280™ (Hexanes-EtOAc: 0-50% gradient)

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

实验步骤: To a solution of N-tert-butylhydroxylamine (133 mg, 1.50 mmol) (prepared from commercially available N-tert-butylhydroxylamine acetate (Aldrich) by adding saturated sodium bicarbonate solution and extracting the free base with ethyl ether) in anhydrous THF (10 mL) was added sodium hydride (53.9 mg, 1.35 mmol). The mixture was stirred at 0° C. for 20 min. A solution of Example 151A (310 mg, 0.75 mmol) in THF (4 mL) was added and the mixture was stirred at 22° C. for 5 hours. The solvent was removed under reduced pressure and the residue was partitioned between water and ethyl acetate. The organic layer was washed with brine, dried with MgSO4 and concentrated under reduced pressure. The residue was purified by chromatography on SiO2 using an Analogix® Intelliflash280™ (Hexanes-EtOAc: 0-50% gradient) to give the title compound. 1H NMR (300 MHz, CDCl3) δ ppm 1.22 (s, 9H), 1.42 (s, 9H), 2.23-2.37 (m, 2H), 2.48 (t, J=7.1 Hz, 2H), 4.54 (t, J=6.5 Hz, 2H), 5.75 (s, 1H), 7.61 (dd, J=8.7, 2.4 Hz, 1H), 7.83 (d, J=8.7 Hz, 1H), 8.28 (d, J=2.4 Hz, 1H); MS (ESI) m/z 484 (M+H)+. extracting the free base with ethyl ether) in anhydrous THF (10 mL) the mixture was stirred at 22° C. for 5 hours The solvent was removed under reduced pressure the residue was partitioned between water and ethyl acetate The organic layer was washed with brine dried with MgSO4 concentrated under reduced pressure The residue was purified by chromatography on SiO2 using an Analogix® Intelliflash280™ (Hexanes-EtOAc: 0-50% gradient)

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

实验步骤: To a solution of N-tert-butylhydroxylamine (145 mg, 1.62 mmol) (prepared from commercially available N-tert-butylhydroxylamine acetate (Aldrich) by adding saturated sodium bicarbonate solution and extracting the free base with ethyl ether) in anhydrous THF (10 mL) was added sodium hydride (58.4 mg, 1.46 mmol). The mixture was stirred at 0° C. for 20 minutes. A solution of Example 153A (350 mg, 0.81 mmol) in THF (4 mL) was added and the mixture was stirred at 0° C. for 3 hours. The solvent was removed under reduced pressure and the residue was partitioned between water and ethyl acetate. The organic layer was washed with brine, dried with MgSO4, filtered, and concentrated under reduced pressure. The residue was purified by chromatography on SiO2 using an Analogix® Intelliflash280™ (Hexanes-EtOAc: 0-50% gradient) to give the title compound. 1H NMR (300 MHz, CDCl3) δ ppm 1.22 (s, 9H), 1.42 (s, 9H), 1.74-1.89 (m, 1H), 1.88-2.08 (m, 3H), 3.74-3.84 (m, 1H), 3.89-4.00 (m, 1H), 4.29 (dd, J=12.0, 4.7 Hz, 1H), 4.45-4.63 (m, 2H), 5.73 (s, 1H), 7.59 (dd, J=8.8, 3.1 Hz, 1H), 7.80 (d, J=8.8 Hz, 1H), 8.33 (d, J=2.4 Hz, 1H); MS (ESI) m/z 501 (M+H)+. extracting the free base with ethyl ether) in anhydrous THF (10 mL) the mixture was stirred at 0° C. for 3 hours The solvent was removed under reduced pressure the residue was partitioned between water and ethyl acetate The organic layer was washed with brine dried with MgSO4 filtered concentrated under reduced pressure The residue was purified by chromatography on SiO2 using an Analogix® Intelliflash280™ (Hexanes-EtOAc: 0-50% gradient)

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

实验步骤: To a solution of N-tert-butylhydroxylamine (133 mg, 1.50 mmol) (prepared from commercially available N-tert-butylhydroxylamine acetate (Aldrich) by adding saturated sodium bicarbonate solution and extracting the free base with ethyl ether) in anhydrous THF (10 mL) was added sodium hydride (53.9 mg, 1.35 mmol). The mixture was stirred at 0° C. for 20 min. A solution of Example 151A (310 mg, 0.75 mmol) in THF (4 mL) was added and the mixture was stirred at 22° C. for 5 hours. The solvent was removed under reduced pressure and the residue was partitioned between water and ethyl acetate. The organic layer was washed with brine, dried with MgSO4 and concentrated under reduced pressure. The residue was purified by chromatography on SiO2 using an Analogix® Intelliflash280™ (Hexanes-EtOAc: 0-50% gradient) to give the title compound. 1H NMR (300 MHz, CDCl3) δ ppm 1.22 (s, 9H), 1.42 (s, 9H), 2.23-2.37 (m, 2H), 2.48 (t, J=7.1 Hz, 2H), 4.54 (t, J=6.5 Hz, 2H), 5.75 (s, 1H), 7.61 (dd, J=8.7, 2.4 Hz, 1H), 7.83 (d, J=8.7 Hz, 1H), 8.28 (d, J=2.4 Hz, 1H); MS (ESI) m/z 484 (M+H)+. extracting the free base with ethyl ether) in anhydrous THF (10 mL) the mixture was stirred at 22° C. for 5 hours The solvent was removed under reduced pressure the residue was partitioned between water and ethyl acetate The organic layer was washed with brine dried with MgSO4 concentrated under reduced pressure The residue was purified by chromatography on SiO2 using an Analogix® Intelliflash280™ (Hexanes-EtOAc: 0-50% gradient)