benzyl N-[(2S)-1-amino-1-oxopropan-2-yl]carbamate

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

Procedure: A mixture of (2S)-2-[(benzyloxy)carbonyl]aminopropanoic acid (0.5 g, 0.002 mol), ammonium carbonate (0.43 g, 0.0045 mol), benzotriazol-1-yloxytris(dimethylamino)-phosphonium hexafluorophosphate (1.2 g, 0.0027 mol), N,N-diisopropylethylamine (980 μL, 0.0056 mol) in methylene chloride (3 mL) was stirred at RT overnight. The mixture was quenched with saturated NaHCO3 solution, and extracted with DCM. The combined organic layers were washed with brine, dried over Na2SO4, filtered, and concentrated under reduced pressure. The residue was flash chromatographed on a silica gel column to afford the desired product (0.54 g). Analytical LCMS: (M+H)+=223.1. The mixture was quenched with saturated NaHCO3 solution extracted with DCM The combined organic layers were washed with brine dried over Na2SO4 filtered concentrated under reduced pressure chromatographed on a silica gel column

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

Procedure: A mixture of (2S)-2-[(benzyloxy)carbonyl]aminopropanoic acid (0.5 g, 0.002 mol), ammonium carbonate (0.43 g, 0.0045 mol), benzotriazol-1-yloxytris(dimethylamino)-phosphonium hexafluorophosphate (1.2 g, 0.0027 mol), N,N-diisopropylethylamine (980 μL, 0.0056 mol) in methylene chloride (3 mL) was stirred at RT overnight. The mixture was quenched with saturated NaHCO3 solution, and extracted with DCM. The combined organic layers were washed with brine, dried over Na2SO4, filtered, and concentrated under reduced pressure. The residue was flash chromatographed on a silica gel column to afford the desired product (0.54 g). Analytical LCMS: (M+H)+=223.1. The mixture was quenched with saturated NaHCO3 solution extracted with DCM The combined organic layers were washed with brine dried over Na2SO4 filtered concentrated under reduced pressure chromatographed on a silica gel column

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

Procedure: A mixture of (2S)-2-[(benzyloxy)carbonyl]aminopropanoic acid (0.5 g, 0.002 mol), ammonium carbonate (0.43 g, 0.0045 mol), benzotriazol-1-yloxytris(dimethylamino)-phosphonium hexafluorophosphate (1.2 g, 0.0027 mol), N,N-diisopropylethylamine (980 μL, 0.0056 mol) in methylene chloride (3 mL) was stirred at RT overnight. The mixture was quenched with saturated NaHCO3 solution, and extracted with DCM. The combined organic layers were washed with brine, dried over Na2SO4, filtered, and concentrated under reduced pressure. The residue was flash chromatographed on a silica gel column to afford the desired product (0.54 g). Analytical LCMS: (M+H)+=223.1. The mixture was quenched with saturated NaHCO3 solution extracted with DCM The combined organic layers were washed with brine dried over Na2SO4 filtered concentrated under reduced pressure chromatographed on a silica gel column

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

Procedure: A mixture of (2S)-2-[(benzyloxy)carbonyl]aminopropanoic acid (0.5 g, 0.002 mol), ammonium carbonate (0.43 g, 0.0045 mol), benzotriazol-1-yloxytris(dimethylamino)-phosphonium hexafluorophosphate (1.2 g, 0.0027 mol), N,N-diisopropylethylamine (980 μL, 0.0056 mol) in methylene chloride (3 mL) was stirred at RT overnight. The mixture was quenched with saturated NaHCO3 solution, and extracted with DCM. The combined organic layers were washed with brine, dried over Na2SO4, filtered, and concentrated under reduced pressure. The residue was flash chromatographed on a silica gel column to afford the desired product (0.54 g). Analytical LCMS: (M+H)+=223.1. The mixture was quenched with saturated NaHCO3 solution extracted with DCM The combined organic layers were washed with brine dried over Na2SO4 filtered concentrated under reduced pressure chromatographed on a silica gel column

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

Procedure: A mixture of (2S)-2-[(benzyloxy)carbonyl]aminopropanoic acid (0.5 g, 0.002 mol), ammonium carbonate (0.43 g, 0.0045 mol), benzotriazol-1-yloxytris(dimethylamino)-phosphonium hexafluorophosphate (1.2 g, 0.0027 mol), N,N-diisopropylethylamine (980 μL, 0.0056 mol) in methylene chloride (3 mL) was stirred at RT overnight. The mixture was quenched with saturated NaHCO3 solution, and extracted with DCM. The combined organic layers were washed with brine, dried over Na2SO4, filtered, and concentrated under reduced pressure. The residue was flash chromatographed on a silica gel column to afford the desired product (0.54 g). Analytical LCMS: (M+H)+=223.1. The mixture was quenched with saturated NaHCO3 solution extracted with DCM The combined organic layers were washed with brine dried over Na2SO4 filtered concentrated under reduced pressure chromatographed on a silica gel column

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

Procedure: A mixture of (2S)-2-[(benzyloxy)carbonyl]aminopropanoic acid (0.5 g, 0.002 mol), ammonium carbonate (0.43 g, 0.0045 mol), benzotriazol-1-yloxytris(dimethylamino)-phosphonium hexafluorophosphate (1.2 g, 0.0027 mol), N,N-diisopropylethylamine (980 μL, 0.0056 mol) in methylene chloride (3 mL) was stirred at RT overnight. The mixture was quenched with saturated NaHCO3 solution, and extracted with DCM. The combined organic layers were washed with brine, dried over Na2SO4, filtered, and concentrated under reduced pressure. The residue was flash chromatographed on a silica gel column to afford the desired product (0.54 g). Analytical LCMS: (M+H)+=223.1. The mixture was quenched with saturated NaHCO3 solution extracted with DCM The combined organic layers were washed with brine dried over Na2SO4 filtered concentrated under reduced pressure chromatographed on a silica gel column

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

Procedure: A mixture of (2S)-2-[(benzyloxy)carbonyl]aminopropanoic acid (0.5 g, 0.002 mol), ammonium carbonate (0.43 g, 0.0045 mol), benzotriazol-1-yloxytris(dimethylamino)-phosphonium hexafluorophosphate (1.2 g, 0.0027 mol), N,N-diisopropylethylamine (980 μL, 0.0056 mol) in methylene chloride (3 mL) was stirred at RT overnight. The mixture was quenched with saturated NaHCO3 solution, and extracted with DCM. The combined organic layers were washed with brine, dried over Na2SO4, filtered, and concentrated under reduced pressure. The residue was flash chromatographed on a silica gel column to afford the desired product (0.54 g). Analytical LCMS: (M+H)+=223.1. The mixture was quenched with saturated NaHCO3 solution extracted with DCM The combined organic layers were washed with brine dried over Na2SO4 filtered concentrated under reduced pressure chromatographed on a silica gel column

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

Procedure: A mixture of (2S)-2-[(benzyloxy)carbonyl]aminopropanoic acid (0.5 g, 0.002 mol), ammonium carbonate (0.43 g, 0.0045 mol), benzotriazol-1-yloxytris(dimethylamino)-phosphonium hexafluorophosphate (1.2 g, 0.0027 mol), N,N-diisopropylethylamine (980 μL, 0.0056 mol) in methylene chloride (3 mL) was stirred at RT overnight. The mixture was quenched with saturated NaHCO3 solution, and extracted with DCM. The combined organic layers were washed with brine, dried over Na2SO4, filtered, and concentrated under reduced pressure. The residue was flash chromatographed on a silica gel column to afford the desired product (0.54 g). Analytical LCMS: (M+H)+=223.1. The mixture was quenched with saturated NaHCO3 solution extracted with DCM The combined organic layers were washed with brine dried over Na2SO4 filtered concentrated under reduced pressure chromatographed on a silica gel column