tert-butyl N-[2-(1,3-dioxoisoindol-2-yl)ethyl]carbamate

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

Procedure: A mixture of N-(2-tert-butoxycarbonylaminoethyl)phthalimide (2.5 g) and 4N solution of hydrogen chloride in ethyl acetate (25 ml) was stirred for 1 hour at ambient temperature. The resulting precipitates were collected by filtration and washed with ethyl acetate to give N-(2-aminoethyl)phthalimide hydrochloride (1.89 g) as colorless crystals. The resulting precipitates were collected by filtration washed with ethyl acetate

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

Procedure: To a solution of 3-(phthalimido)propionic acid (6.0 g) and triethylamine (2.77 g) in benzene (60 ml) was added diphenylphosphoryl azide (7.53 g), and the mixture was refluxed for 40 minutes. Tert-butanol (4.23 g) was added thereto, and the mixture was refluxed overnight. After cooling, the reaction mixture was washed with saturated sodium bicarbonate solution, water and brine, dried over magnesium sulfate and evaporated in vacuo. The residue was purified by flash chromatography (n-hexane-ethyl acetate) and crystallized from diisopropyl ether to give N-(2-tert-butoxycarbonylaminoethyl)phthalimide (5.74 g) as colorless crystals. the mixture was refluxed for 40 minutes the mixture was refluxed overnight After cooling the reaction mixture was washed with saturated sodium bicarbonate solution, water and brine dried over magnesium sulfate evaporated in vacuo The residue was purified by flash chromatography (n-hexane-ethyl acetate) crystallized from diisopropyl ether

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

Procedure: A mixture of N-(2-tert-butoxycarbonylaminoethyl)phthalimide (2.5 g) and 4N solution of hydrogen chloride in ethyl acetate (25 ml) was stirred for 1 hour at ambient temperature. The resulting precipitates were collected by filtration and washed with ethyl acetate to give N-(2-aminoethyl)phthalimide hydrochloride (1.89 g) as colorless crystals. The resulting precipitates were collected by filtration washed with ethyl acetate

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

Procedure: A mixture of N-(2-tert-butoxycarbonylaminoethyl)phthalimide (2.5 g) and 4N solution of hydrogen chloride in ethyl acetate (25 ml) was stirred for 1 hour at ambient temperature. The resulting precipitates were collected by filtration and washed with ethyl acetate to give N-(2-aminoethyl)phthalimide hydrochloride (1.89 g) as colorless crystals. The resulting precipitates were collected by filtration washed with ethyl acetate

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

Procedure: To a solution of 3-(phthalimido)propionic acid (6.0 g) and triethylamine (2.77 g) in benzene (60 ml) was added diphenylphosphoryl azide (7.53 g), and the mixture was refluxed for 40 minutes. Tert-butanol (4.23 g) was added thereto, and the mixture was refluxed overnight. After cooling, the reaction mixture was washed with saturated sodium bicarbonate solution, water and brine, dried over magnesium sulfate and evaporated in vacuo. The residue was purified by flash chromatography (n-hexane-ethyl acetate) and crystallized from diisopropyl ether to give N-(2-tert-butoxycarbonylaminoethyl)phthalimide (5.74 g) as colorless crystals. the mixture was refluxed for 40 minutes the mixture was refluxed overnight After cooling the reaction mixture was washed with saturated sodium bicarbonate solution, water and brine dried over magnesium sulfate evaporated in vacuo The residue was purified by flash chromatography (n-hexane-ethyl acetate) crystallized from diisopropyl ether

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

Procedure: To a solution of 3-(phthalimido)propionic acid (6.0 g) and triethylamine (2.77 g) in benzene (60 ml) was added diphenylphosphoryl azide (7.53 g), and the mixture was refluxed for 40 minutes. Tert-butanol (4.23 g) was added thereto, and the mixture was refluxed overnight. After cooling, the reaction mixture was washed with saturated sodium bicarbonate solution, water and brine, dried over magnesium sulfate and evaporated in vacuo. The residue was purified by flash chromatography (n-hexane-ethyl acetate) and crystallized from diisopropyl ether to give N-(2-tert-butoxycarbonylaminoethyl)phthalimide (5.74 g) as colorless crystals. the mixture was refluxed for 40 minutes the mixture was refluxed overnight After cooling the reaction mixture was washed with saturated sodium bicarbonate solution, water and brine dried over magnesium sulfate evaporated in vacuo The residue was purified by flash chromatography (n-hexane-ethyl acetate) crystallized from diisopropyl ether

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

Procedure: A mixture of N-(2-tert-butoxycarbonylaminoethyl)phthalimide (2.5 g) and 4N solution of hydrogen chloride in ethyl acetate (25 ml) was stirred for 1 hour at ambient temperature. The resulting precipitates were collected by filtration and washed with ethyl acetate to give N-(2-aminoethyl)phthalimide hydrochloride (1.89 g) as colorless crystals. The resulting precipitates were collected by filtration washed with ethyl acetate

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

Procedure: To a solution of 3-(phthalimido)propionic acid (6.0 g) and triethylamine (2.77 g) in benzene (60 ml) was added diphenylphosphoryl azide (7.53 g), and the mixture was refluxed for 40 minutes. Tert-butanol (4.23 g) was added thereto, and the mixture was refluxed overnight. After cooling, the reaction mixture was washed with saturated sodium bicarbonate solution, water and brine, dried over magnesium sulfate and evaporated in vacuo. The residue was purified by flash chromatography (n-hexane-ethyl acetate) and crystallized from diisopropyl ether to give N-(2-tert-butoxycarbonylaminoethyl)phthalimide (5.74 g) as colorless crystals. the mixture was refluxed for 40 minutes the mixture was refluxed overnight After cooling the reaction mixture was washed with saturated sodium bicarbonate solution, water and brine dried over magnesium sulfate evaporated in vacuo The residue was purified by flash chromatography (n-hexane-ethyl acetate) crystallized from diisopropyl ether