(2S)-2-aminopentan-1-ol

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

Procedure: To an ice cold, stirred suspension of NaH (60% in oil, 1.9 g, 46.0 mmol) in toluene (62 mL) was added dropwise a solution of (S)-2-aminopentan-1-ol (2.1 g, 20.0 mmol) in toluene (44 mL). After the addition was completed, the reaction mixture was warmed to room temperature and a solution of ethyl chloroacetate (2.7 g, 22.0 mmol) in toluene (12 mL) was added in a dropwise manner. The resulting mixture was then stirred at reflux for 20 h, cooled to room temperature, and solid ammonium chloride (2.5 g, 46.0 mmol) was added to the reaction. The mixture was stirred for 20 min and then concentrated under reduced pressure. The crude material was purified by column chromatography (silica gel, 98:2 CH2Cl2/CH3OH to 95:5 CH2Cl2/CH3OH) to give (S)-5-propylmorpholin-3-one (2.2 g, 76%) as a yellow oil. To ice-cold THF (10 mL) was added lithium aluminum hydride (1.0 M solution in THF, 30 mL, 30 mmol). Once the addition was complete, a solution of (S)-5-propylmorpholin-3-one (2.2 g, 15 mmol) in THF (10 mL) was added dropwise over 20 min. Once the addition was completed, the ice bath was removed and the reaction mixture stirred at reflux for 20 h. The reaction was cooled in an ice-bath and to this was slowly added H2O (1.2 mL), then 15% aqueous solution of sodium hydroxide (1.2 mL), and then H2O (1.2 mL). The resulting mixture was stirred at room temperature for 1.5 h and then filtered washing the solid with EtOAc (50 mL). The filtrate was concentrated at room temperature under reduced pressure to provide (S)-3-propylmorpholine (1.9 g, 98%) as a light yellow oil. 1H NMR and MS consistent. After the addition at reflux for 20 h cooled to room temperature The mixture was stirred for 20 min concentrated under reduced pressure The crude material was purified by column chromatography (silica gel, 98:2 CH2Cl2/CH3OH to 95:5 CH2Cl2/CH3OH)

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

Procedure: To an ice cold, stirred suspension of NaH (60% in oil, 1.9 g, 46.0 mmol) in toluene (62 mL) was added dropwise a solution of (S)-2-aminopentan-1-ol (2.1 g, 20.0 mmol) in toluene (44 mL). After the addition was completed, the reaction mixture was warmed to room temperature and a solution of ethyl chloroacetate (2.7 g, 22.0 mmol) in toluene (12 mL) was added in a dropwise manner. The resulting mixture was then stirred at reflux for 20 h, cooled to room temperature, and solid ammonium chloride (2.5 g, 46.0 mmol) was added to the reaction. The mixture was stirred for 20 min and then concentrated under reduced pressure. The crude material was purified by column chromatography (silica gel, 98:2 CH2Cl2/CH3OH to 95:5 CH2Cl2/CH3OH) to give (S)-5-propylmorpholin-3-one (2.2 g, 76%) as a yellow oil. To ice-cold THF (10 mL) was added lithium aluminum hydride (1.0 M solution in THF, 30 mL, 30 mmol). Once the addition was complete, a solution of (S)-5-propylmorpholin-3-one (2.2 g, 15 mmol) in THF (10 mL) was added dropwise over 20 min. Once the addition was completed, the ice bath was removed and the reaction mixture stirred at reflux for 20 h. The reaction was cooled in an ice-bath and to this was slowly added H2O (1.2 mL), then 15% aqueous solution of sodium hydroxide (1.2 mL), and then H2O (1.2 mL). The resulting mixture was stirred at room temperature for 1.5 h and then filtered washing the solid with EtOAc (50 mL). The filtrate was concentrated at room temperature under reduced pressure to provide (S)-3-propylmorpholine (1.9 g, 98%) as a light yellow oil. 1H NMR and MS consistent. After the addition at reflux for 20 h cooled to room temperature The mixture was stirred for 20 min concentrated under reduced pressure The crude material was purified by column chromatography (silica gel, 98:2 CH2Cl2/CH3OH to 95:5 CH2Cl2/CH3OH)

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

Procedure: The title compound was prepared in analogy to (2S,3S)-3-amino-N-cyclopropyl-2-hydroxypentanamide dihydrochloride, Representative Procedure A, starting with (S)-2-aminopentan-1-ol in the first step (A1), and using isocyanoethane in the third step (A3).

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

Procedure: The title compound was prepared in analogy to (2S,3S)-3-amino-N-cyclopropyl-2-hydroxypentanamide dihydrochloride, Representative Procedure A, starting with (S)-2-aminopentan-1-ol in the first step (A1), and using 2-isocyanopentane in the third step (A3).

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

Procedure: The title compound was prepared in analogy to (2S,3S)-3-amino-N-cyclopropyl-2-hydroxypentanamide dihydrochloride, Representative Procedure A, starting with (S)-2-aminopentan-1-ol in the first step (A1), and using (isocyanomethyl)benzene in the third step (A3).

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

Procedure: The title compound was prepared in analogy to (2S,3S)-3-amino-N-cyclopropyl-2-hydroxypentanamide dihydrochloride, Representative Procedure A, starting with (S)-2-aminopentan-1-ol in the first step (A1), and using (isocyanomethyl)benzene in the third step (A3).

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

Procedure: The title compound was prepared in analogy to (2S,3S)-3-amino-N-cyclopropyl-2-hydroxypentanamide dihydrochloride, Representative Procedure A, using (S)-2-aminopentan-1-ol in the first step (A1), and 1-isocyanobutane in the third step (A3).

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

Procedure: The title compound was prepared in analogy to (2S,3S)-3-amino-N-cyclopropyl-2-hydroxypentanamide dihydrochloride, Representative Procedure A, using (S)-2-aminopentan-1-ol in the first step (A1), and 1-isocyanobutane in the third step (A3).

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

Procedure: A solution of triphosgene (0.431 g, 1.45 mmol) in THF (5 mL) was added dropwise to a stirred solution of (S)-2-aminopentan-1-ol (0.500 g, 4.85 mmol) and Et3N (1.49 mL, 10.7 mmol) in THF (22 mL) at 0° C. under N2. The reaction mixture was stirred at ambient temperature for 2 hours. After cooling, the suspension was filtered through GF/F paper and concentrated in vacuo. The residue was taken up in EtOAc and washed with 10% HCl, dried and concentrated to give (S)-4-propyloxazolidin-2-one (0.348 g, 55%) as a clear oil. After cooling the suspension was filtered through GF/F paper concentrated in vacuo washed with 10% HCl dried concentrated

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

Procedure: To an ice cold, stirred suspension of NaH (60% in oil, 1.9 g, 46.0 mmol) in toluene (62 mL) was added dropwise a solution of (S)-2-aminopentan-1-ol (2.1 g, 20.0 mmol) in toluene (44 mL). After the addition was completed, the reaction mixture was warmed to room temperature and a solution of ethyl chloroacetate (2.7 g, 22.0 mmol) in toluene (12 mL) was added in a dropwise manner. The resulting mixture was then stirred at reflux for 20 h, cooled to room temperature, and solid ammonium chloride (2.5 g, 46.0 mmol) was added to the reaction. The mixture was stirred for 20 min and then concentrated under reduced pressure. The crude material was purified by column chromatography (silica gel, 98:2 CH2Cl2/CH3OH to 95:5 CH2Cl2/CH3OH) to give (S)-5-propylmorpholin-3-one (2.2 g, 76%) as a yellow oil. To ice-cold THF (10 mL) was added lithium aluminum hydride (1.0 M solution in THF, 30 mL, 30 mmol). Once the addition was complete, a solution of (S)-5-propylmorpholin-3-one (2.2 g, 15 mmol) in THF (10 mL) was added dropwise over 20 min. Once the addition was completed, the ice bath was removed and the reaction mixture stirred at reflux for 20 h. The reaction was cooled in an ice-bath and to this was slowly added H2O (1.2 mL), then 15% aqueous solution of sodium hydroxide (1.2 mL), and then H2O (1.2 mL). The resulting mixture was stirred at room temperature for 1.5 h and then filtered washing the solid with EtOAc (50 mL). The filtrate was concentrated at room temperature under reduced pressure to provide (S)-3-propylmorpholine (1.9 g, 98%) as a light yellow oil. 1H NMR and MS consistent. After the addition at reflux for 20 h cooled to room temperature The mixture was stirred for 20 min concentrated under reduced pressure The crude material was purified by column chromatography (silica gel, 98:2 CH2Cl2/CH3OH to 95:5 CH2Cl2/CH3OH)

Conditions: temp:100.01; pressure:0.00; stir:

Procedure: Palladium(II) acetate (8.23 mg, 0.04 mmol) and 9,9-Dimethyl-4,5-bis(diphenylphosphino)xanthene (42.4 mg, 0.07 mmol) were added to dioxane (3 mL) and the solution was stirred at room temperature for 10 minutes. 2-(4-((2-amino-4-chloro-6-methylpyrimidin-5-yl)methyl)phenyl)acetonitrile (200 mg, 0.73 mmol), (S)-(+)-2-Amino-1-pentanol (151 mg, 1.47 mmol) and POTASSIUM CARBONATE (203 mg, 1.47 mmol) were added and the mixture was heated at 100 °C for 15 hours. LCMS showed no product and reaction not progressed.

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

Procedure: A solution of (2S)-2-aminopentan-1-ol (500 mg) in THF (6 mL) was cooled in a dry ice-acetone bath under nitrogen atmosphere, and a solution of 4-methoxyphenyl isocyanate (657 mg) in THF (4 mL) was added dropwise thereto. After the mixture was stirred for 17 hr while gradually warming to room temperature, methanol was added thereto, and the solvent was distilled off under reduced pressure to afford 1-[(2S)-1-hydroxypentan-2-yl]-3-(4-methoxyphenyl)urea (1.17 g). the solvent was distilled off under reduced pressure