tert-butyl N-(2-amino-2-phenylethyl)carbamate

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

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

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

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

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

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

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

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

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

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

Procedure: To a solution of 5-bromo-2-thiophenecarboxylic acid (3.2 g, 15.2 mmol), PyBrOP (8.5 g, 18.2 mmol) and diisopropylethyl amine (10.6 mL, 60.9 mmol) in DCM (76 mL) at 25° C. was added 1,1-dimethylethyl (2-amino-2-phenylethyl)carbamate (3.6 g, 3.14 mmol)[prepared in Preparation 1]. After 16 h, the solution was partitioned between H2O and washed with DCM. The combined organic fraction were dried (Na2SO4), concentrated and purified via column chromatography (silica, 1% MeOH in DCM) affording the title compound (4 g, 62%) as a white solid: LC-MS (ES) m/z=426 (M+H)+. the solution was partitioned between H2O washed with DCM The combined organic fraction were dried (Na2SO4) concentrated purified via column chromatography (silica, 1% MeOH in DCM)

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

Procedure: To a solution of 5-bromo-2-thiophenecarboxylic acid (3.2 g, 15.2 mmol), PyBrOP (8.5 g, 18.2 mmol) and diisopropylethyl amine (10.6 mL, 60.9 mmol) in DCM (76 mL) at 25° C. was added 1,1-dimethylethyl (2-amino-2-phenylethyl)carbamate (3.6 g, 3.14 mmol)[prepared in Preparation 1]. After 16 h, the solution was partitioned between H2O and washed with DCM. The combined organic fraction were dried (Na2SO4), concentrated and purified via column chromatography (silica, 1% MeOH in DCM) affording the title compound (4 g, 62%) as a white solid: LC-MS (ES) m/z=426 (M+H)+. the solution was partitioned between H2O washed with DCM The combined organic fraction were dried (Na2SO4) concentrated purified via column chromatography (silica, 1% MeOH in DCM)

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

Procedure: A solution of 1,1-dimethylethyl[2-(1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)-2-phenylethyl]carbamate (2 g, 5.46 mmol) and either MeNH2 (40 wt % in H2O, 10 eq.) or NH2NH2 (10 eq.) in MeOH (0.5M, 10 mL) was heated to 60° C. in a sealed tube. After 12 h, the solution was concentrated and purified via column chromatography (silica-dry load, 2% MeOH in DCM (1% NH4OH)) affording the title compound (1.1 g, 85%) as a white solid: LC-MS (ES) m/z=237 (M+H)+. the solution was concentrated purified via column chromatography (silica-dry load, 2% MeOH in DCM (1% NH4OH))