N-BOC-4-AMINO-2-BUTANONE

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of 10-4 (10 g, 53.4 mmol), 2-amino-3-formylpyridine 1-3 (7.2 g, 64 mmol), 20% aq. KOH (1 mL), and ethanol (200 mL) was heated at reflux for 3 h. Evaporation of the solvents and flash chromatography (silica, 70 CHCl3/28 EtOAc/2 MeOH) gave 10-5 as a solid. at reflux for 3 h Evaporation of the solvents and flash chromatography (silica, 70 CHCl3/28 EtOAc/2 MeOH)

Conditions: temp:25.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of BOC-beta-alanine (20 g, 105 mmol), 10-2 (10.3 g, 105 mmol), BOP reagent (46.5 g, 105 mmol), and N-methylmorpholine (46 mL, 420 mmol) in acetonitrile (500 mL) was stirred for 15 h. The reaction was diluted with EtOAc, washed with H2O, 10% KHSO4(aq.), sat. NaHCO3, dried (MgSO4) and concentrated to give crude [2-(methoxy-methyl-carbamoyl)-ethyl]-carbamic acid tert-butyl ester 10-3 as a yellow oil. TLC Rf=0.42 (silica, 20% EtOAc/hexanes). To a solution of this crude amide in THF (500 mL) at 0° C. was added CH3MgBr (100 mL of 3M in ether, 300 mmol) over 30 minutes. After 2 h, 10% KHSO4(aq.) was added, the mixture warmed to 25° C., and diluted with EtOAc. The organics were washed with sat. NaHCO3, dried (MgSO4) and concentrated. Flash chromatography (silica, 20% EtOAc/hexanes) gave 10-4 as a yellow oil. The organics were washed with sat. NaHCO3 dried (MgSO4) concentrated

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of 10-4 (10 g, 53.4 mmol), 2-amino-3-formylpyridine 1-3 (7.2 g, 64 mmol), 20% aq. KOH (1 mL), and ethanol (200 mL) was heated at reflux for 3 h. Evaporation of the solvents and flash chromatography (silica, 70 CHCl3 /28 EtOAc/2 MeOH) gave 10-5 as a solid. at reflux for 3 h Evaporation of the solvents and flash chromatography (silica, 70 CHCl3 /28 EtOAc/2 MeOH)

Conditions: temp:25.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of BOC-beta-alanine (20 g, 105 mmol), 10-2 (10.3 g, 105 mmol), BOP reagent (46.5 g, 105 mmol), and N-methylmorpholine (46 mL, 420 mmol) in acetonitrile (500 mL) was stirred for 15 h. The reaction was diluted with EtOAc, washed with H2O, 10% KHSO4 (aq.), sat. NaHCO3, dried (MgSO4) and concentrated to give crude [2-(methoxy-methyl-carbamoyl)-ethyl]-carbamic acid tert-butyl ester 10-3 as a yellow oil. TLC Rf =0.42 (silica, 20% EtOAc/hexanes). To a solution of this crude amide in THF (500 mL) at 0° C. was added CH3MgBr (100 mL of 3M in ether, 300 mmol) over 30 minutes. After 2 h, 10% KHSO4 (aq.) was added, the mixture warmed to 25° C., and diluted with EtOAc. The organics were washed with sat. NaHCO3, dried (MgSO4) and concentrated. Flash chromatography (silica, 20% EtOAc/hexanes) gave 10-4 as a yellow oil. The organics were washed with sat. NaHCO3 dried (MgSO4) concentrated

Conditions: temp:25.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of BOC-beta-alanine (20 g, 105 mmol), 10-2 (10.3 g, 105 mmol), BOP reagent (46.5 g, 105 mmol), and N-methylmorpholine (46 mL, 420 mmol) in acetonitrile (500 mL) was stirred for 15 h. The reaction was diluted with EtOAc, washed with H2O, 10% KHSO4 (aq.), sat. NaHCO3, dried (MgSO4) and concentrated to give crude [2-(methoxy-methyl-carbamoyl)-ethyl]-carbamic acid tert-butyl ester 10-3 as a yellow oil. TLC Rf =0.42 (silica, 20% EtOAc/hexanes). To a solution of this crude amide in THF (500 mL) at 0° C. was added CH3MgBr (100 mL of 3M in ether, 300 mmol) over 30 minutes. After 2 h, 10% KHSO4 (aq.) was added, the mixture warmed to 25° C., and diluted with EtOAc. The organics were washed with sat. NaHCO3, dried (MgSO4) and concentrated. Flash chromatography (silica, 20% EtOAc/hexanes) gave 10-4 as a yellow oil. The organics were washed with sat. NaHCO3 dried (MgSO4) concentrated

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of 10-4 (10 g, 53.4 mmol), 2-amino-3-formylpyridine 1-3 (7.2 g, 64 mmol), 20% aq. KOH (1 mL), and ethanol (200 mL) was heated at reflux for 3 h. Evaporation of the solvents and flash chromatography (silica, 70 CHCl3/28 EtOAc/2 MeOH) gave 10-5 as a solid. at reflux for 3 h Evaporation of the solvents and flash chromatography (silica, 70 CHCl3/28 EtOAc/2 MeOH)

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of 10-4 (10 g, 53.4 mmol), 2-amino-3-formylpyridine 1-3 (7.2 g, 64 mmol), 20% aq. KOH (1 mL), and ethanol (200 mL) was heated at reflux for 3 h. Evaporation of the solvents and flash chromatography (silica, 70 CHCl3/28 EtOAc/2 MeOH) gave 10-5 as a solid. at reflux for 3 h Evaporation of the solvents and flash chromatography (silica, 70 CHCl3/28 EtOAc/2 MeOH)

Conditions: temp:25.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of BOC-beta-alanine (20 g, 105 mmol), 10-2 (10.3 g, 105 mmol), BOP reagent (46.5 g, 105 mmol), and N-methylmorpholine (46 mL, 420 mmol) in acetonitrile (500 mL) was stirred for 15 h. The reaction was diluted with EtOAc, washed with H2O, 10% KHSO4(aq.), sat. NaHCO3, dried (MgSO4) and concentrated to give crude [2-(methoxy-methyl-carbamoyl)-ethyl]-carbamic acid tert-butyl ester 10-3 as a yellow oil. TLC Rf=0.42 (silica, 20% EtOAc/hexanes). To a solution of this crude amide in THF (500 mL) at 0° C. was added CH3MgBr (100 mL of 3M in ether, 300 mmol) over 30 minutes. After 2 h, 10% KHSO4(aq.) was added, the mixture warmed to 25° C., and diluted with EtOAc. The organics were washed with sat. NaHCO3, dried (MgSO4) and concentrated. Flash chromatography (silica, 20% EtOAc/hexanes) gave 10-4 as a yellow oil. The organics were washed with sat. NaHCO3 dried (MgSO4) concentrated

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of 10-4 (10 g, 53.4 mmol), 2-amino-3-formylpyridine 1-3 (7.2 g, 64 mmol), 20% aq. KOH (1 mL), and ethanol (200 mL) was heated at reflux for 3 h. Evaporation of the solvents and flash chromatography (silica, 70 CHCl3/28 EtOAc/2 MeOH) gave 10-5 as a solid. at reflux for 3 h Evaporation of the solvents and flash chromatography (silica, 70 CHCl3/28 EtOAc/2 MeOH)

Conditions: temp:25.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of BOC-beta-alanine (20 g, 105 mmol), 10-2 (10.3 g, 105 mmol), BOP reagent (46.5 g, 105 mmol), and N-methylmorpholine (46 mL, 420 mmol) in acetonitrile (500 mL) was stirred for 15 h. The reaction was diluted with EtOAc, washed with H2O, 10% KHSO4(aq.), sat. NaHCO3, dried (MgSO4) and concentrated to give crude [2-(methoxymethyl-carbamoyl)-ethyl]-carbamic acid tert-butyl ester 10-3 as a yellow oil. TLC Rf=0.42 (silica, 20% EtOAc/hexanes). To a solution of this crude amide in THF (500 mL) at 0° C. was added CH3MgBr (100 mL of 3M in ether, 300 mmol) over 30 minutes. After 2 h, 10% KHSO4(aq.) was added, the mixture warmed to 25° C., and diluted with EtOAc. The organics were washed with sat. NaHCO3, dried (MgSO4) and concentrated. Flash chromatography (silica, 20% EtOAc/hexanes) gave 10-4 as a yellow oil. The organics were washed with sat. NaHCO3 dried (MgSO4) concentrated

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of 10-4 (10 g, 53.4 mmol), 2-amino-3-formylpyridine 1-3 (7.2 g, 64 mmol), 20% aq. KOH (1 mL), and ethanol (200 mL) was heated at reflux for 3 h. Evaporation of the solvents and flash chromatography (silica, 70 CHCl3 /28 EtOAc/2 MeOH) gave 10-5 as a solid. at reflux for 3 h Evaporation of the solvents and flash chromatography (silica, 70 CHCl3 /28 EtOAc/2 MeOH)

Conditions: temp:25.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of BOC-beta-alanine (20 g, 105 mmol), 10-2 (10.3 g, 105 mmol), BOP reagent (46.5 g, 105 mmol), and N-methylmorpholine (46 mL, 420 mmol) in acetonitrile (500 mL) was stirred for 15 h. The reaction was diluted with EtOAc, washed with H2O, 10% KHSO4 (aq.), sat. NaHCO3, dried (MgSO4) and concentrated to give crude [2-(methoxy-methyl-carbamoyl)-ethyl]-carbamic acid tert-butyl ester 10-3 as a yellow oil. TLC Rf =0.42 (silica, 20% EtOAc/hexanes). To a solution of this crude amide in THF (500 mL) at 0° C. was added CH3MgBr (100 mL of 3M in ether, 300 mmol) over 30 minutes. After 2 h, 10% KHSO4 (aq.) was added, the mixture warmed to 25° C., and diluted with EtOAc. The organics were washed with sat. NaHCO3, dried (MgSO4) and concentrated. Flash chromatography (silica, 20% EtOAc/hexanes) gave 10-4 as a yellow oil. The organics were washed with sat. NaHCO3 dried (MgSO4) concentrated