tert-butyl 2-(2-methoxyethylamino)acetate

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a solution of 55.8 g of N-(2-methoxyethyl)glycine tert-butyl ester in 200 ml of benzene was added 63.8 g of benzyl alcohol and 72.9 g of p-toluenesulfonic acid monohydrate. The mixture was heated at reflux for 10 hours with the continuous removal of water through a Dean-Stark water trap. At the end of this period, the solution was concentrated in vacuo, and to the residue was added 300 ml of dry ethyl ether. After 2 hours at room temperature, the formed precipitate was filtered, washed with dry ethyl ether and then recrystallized from ethyl acetate to yield 99.2 g (85 percent) of N-(2-methoxyethyl)glycine benzyl ester p-toluenesulfonate, M.P. 95°-96° C. The mixture was heated At the end of this period, the solution was concentrated in vacuo to the residue was added 300 ml of dry ethyl ether the formed precipitate was filtered washed with dry ethyl ether recrystallized from ethyl acetate

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a solution of 55.8 g of N-(2-methoxyethyl)glycine tert-butyl ester in 200 ml of benzene was added 63.8 g of benzyl alcohol and 72.9 g of p-toluenesulfonic acid monohydrate. The mixture was heated at reflux for 10 hours with the continuous removal of water through a Dean-Stark water trap. At the end of this period, the solution was concentrated in vacuo, and to the residue was added 300 ml of dry ethyl ether. After 2 hours at room temperature, the formed precipitate was filtered, washed with dry ethyl ether and then recrystallized from ethyl acetate to yield 99.2 g (85 percent) of N-(2-methoxyethyl)glycine benzyl ester p-toluenesulfonate, M.P. 95°-6° C. The mixture was heated At the end of this period, the solution was concentrated in vacuo to the residue was added 300 ml of dry ethyl ether the formed precipitate was filtered washed with dry ethyl ether recrystallized from ethyl acetate

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a solution of 55.8 g of N-(2-methoxyethyl)glycine tert-butyl ester in 200 ml of benzene was added 63.8 g of benzyl alcohol and 72.9 g of p-toluenesulfonic acid monohydrate. The mixture was heated at reflux for 10 hours with the continuous removal of water through a Dean-Stark water trap. At the end of this period, the solution was concentrated in vacuo, and to the residue was added 300 ml of dry ethyl ether. After 2 hours at room temperature, the formed precipitate was filtered, washed with dry ethyl ether and then recrystallized from ethyl acetate to yield 99.2 g (85 percent) of N-(2-methoxyethyl)glycine benzyl ester p-toluenesulfonate, M.P. 95°-6° C. The mixture was heated At the end of this period, the solution was concentrated in vacuo to the residue was added 300 ml of dry ethyl ether the formed precipitate was filtered washed with dry ethyl ether recrystallized from ethyl acetate

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a solution of 55.8 g of N-(2-methoxyethyl)glycine tert-butyl ester in 200 ml of benzene was added 63.8 g of benzyl alcohol and 72.9 g of p-toluenesulfonic acid monohydrate. The mixture was heated at reflux for 10 hours with the continuous removal of water through a Dean-Stark water trap. At the end of this period, the solution was concentrated in vacuo, and to the residue was added 300 ml of dry ethyl ether. After 2 hours at room temperature, the formed precipitate was filtered, washed with dry ethyl ether and then recrystallized from ethyl acetate to yield 99.2 g (85 percent) of N-(2-methoxyethyl)glycine benzyl ester p-toluenesulfonate, M.P. 95°-6° C. The following amino acid benzyl ester p-toluenesulfonate not previously reported in the chemical literature were synthesized by the aforementioned procedure. The mixture was heated At the end of this period, the solution was concentrated in vacuo to the residue was added 300 ml of dry ethyl ether the formed precipitate was filtered washed with dry ethyl ether recrystallized from ethyl acetate

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a solution of 55.8 g of N-(2-methoxyethyl)glycine tert-butyl ester in 200 ml of benzene was added 63.8 g of benzyl alcohol and 72.9 g of p-toluenesulfonic acid monohydrate. The mixture was heated at reflux for 10 hours with the continuous removal of water through a Dean-Stark water trap. At the end of this period, the solution was concentrated in vacuo, and to the residue was added 300 ml of dry ethyl ether. After 2 hours at room temperature, the formed precipitate was filtered, washed with dry ethyl ether and then recrystallized from ethyl acetate to yield 99.2 g (85 percent) of N-(2-methoxyethyl)glycine benzyl ester p-toluenesulfonate, M.P. 95°-6° C. The following amino acid benzyl ester p-toluenesulfonate not previously reported in the chemical literature were synthesized by the aforementioned procedure. The mixture was heated At the end of this period, the solution was concentrated in vacuo to the residue was added 300 ml of dry ethyl ether the formed precipitate was filtered washed with dry ethyl ether recrystallized from ethyl acetate

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a solution of 55.8 g of N-(2-methoxyethyl)glycine tert-butyl ester in 200 ml of benzene was added 63.8 g of benzyl alcohol and 72.9 g of p-toluenesulfonic acid monohydrate. The mixture was heated at reflux for 10 hours with the continuous removal of water through a Dean-Stark water trap. At the end of this period, the solution was concentrated in vacuo, and to the residue was added 300 ml of dry ethyl ether. After 2 hours at room temperature, the formed precipitate was filtered, washed with dry ethyl ether and then recrystallized from ethyl acetate to yield 99.2 g (85 percent) of N-(2-methoxyethyl)glycine benzyl ester p-toluenesulfonate, M.P. 95°-96° C. The mixture was heated At the end of this period, the solution was concentrated in vacuo to the residue was added 300 ml of dry ethyl ether the formed precipitate was filtered washed with dry ethyl ether recrystallized from ethyl acetate

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a solution of 55.8 g of N-(2-methoxyethyl)glycine tert-butyl ester in 200 ml of benzene was added 63.8 g of benzyl alcohol and 72.9 of p-toluenesulfonic acid monohydrate. The mixture was heated at reflux for 10 hours with the continuous removal of water through a Dean-Stark water trap. At the end of this period, the solution was concentrated in vacuo, and to the residue was added 300 ml of dry ethyl ether. After 2 hours at room temperature, the formed precipitate was filtered, washed with dry ethyl ether and then recrystallized from ethyl acetate to yield 99.2 g (85 percent) of N-(2-methoxyethyl)glycine benzyl ester p-toluenesulfonate, M.P. 95°-6° C. The mixture was heated At the end of this period, the solution was concentrated in vacuo to the residue was added 300 ml of dry ethyl ether the formed precipitate was filtered washed with dry ethyl ether recrystallized from ethyl acetate

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a solution of 55.8 g of N-(2-methoxyethyl)glycine tert-butyl ester in 200 ml of benzene was added 63.8 g of benzyl alcohol and 72.9 of p-toluenesulfonic acid monohydrate. The mixture was heated at reflux for 10 hours with the continuous removal of water through a Dean-Stark water trap. At the end of this period, the solution was concentrated in vacuo, and to the residue was added 300 ml of dry ethyl ether. After 2 hours at room temperature, the formed precipitate was filtered, washed with dry ethyl ether and then recrystallized from ethyl acetate to yield 99.2 g (85 percent) of N-(2-methoxyethyl)glycine benzyl ester p-toluenesulfonate, M.P. 95°-6° C. The mixture was heated At the end of this period, the solution was concentrated in vacuo to the residue was added 300 ml of dry ethyl ether the formed precipitate was filtered washed with dry ethyl ether recrystallized from ethyl acetate

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a solution of 55.8 g of N-(2-methoxyethyl)glycine tert-butyl ester in 200 ml of benzene was added 63.8 g of benzyl alcohol and 72.9 g of p-toluenesulfonic acid monohydrate. The mixture was heated at reflux for 10 hours with the continuous removal of water through a Dean-Stark water trap. At the end of this period, the solution was concentrated in vacuo, and to the residue was added 300 ml of dry ethyl ether. After 2 hours at room temperature, the formed precipitate was filtered, washed with dry ethyl ether and then recrystallized from ethyl acetate to yield 99.2 g (85 percent) of N-(2-methoxyethyl)glycine benzyl ester p-toluenesulfonate, M.P. 95°-6° C. The mixture was heated At the end of this period, the solution was concentrated in vacuo to the residue was added 300 ml of dry ethyl ether the formed precipitate was filtered washed with dry ethyl ether recrystallized from ethyl acetate

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a solution of 55.8 g of N-(2-methoxyethyl)glycine tert-butyl ester in 200 ml of benzene was added 63.8 g of benzyl alcohol and 72.9 g of toluenesulfonic acid monohydrate. The mixture was heated at reflux for 10 hours with the continuous removal of water through a Dean-Stark water trap. At the end of this period, the solution was concentrated in vacuo, and to the residue was added 300 ml of dry ethyl ether. After 2 hours at room temperature, the formed precipitate was filtered, washed with dry ethyl ether and then recrystallized from ethyl acetate to yield 99.2 g (85 percent) of N-(2-methoxyethyl)glycine benzyl ester p-toluenesulfonate, M.P. 95°-6° C. The mixture was heated At the end of this period, the solution was concentrated in vacuo to the residue was added 300 ml of dry ethyl ether the formed precipitate was filtered washed with dry ethyl ether recrystallized from ethyl acetate

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a solution of 55.8 g of N-(2-methoxyethyl)glycine tert-butyl ester in 200 ml of benzene was added 63.8 g of benzyl alcohol and 72.9 g of p-toluenesulfonic acid monohydrate. The mixture was heated at reflux for 10 hours with the continuous removal of water through a Dean-Stark water trap. At the end of this period, the solution was concentrated in vacuo, and to the residue was added 300 ml of dry ethyl ether. After 2 hours at room temperature, the formed precipitate was filtered, washed with dry ethyl ether and then recrystallized from ethyl acetate to yield 99.2 g (85 percent) of N-(2-methoxyethyl)glycine benzyl ester p-toluenesulfonate, M.P. 95°-96° C. The mixture was heated At the end of this period, the solution was concentrated in vacuo to the residue was added 300 ml of dry ethyl ether the formed precipitate was filtered washed with dry ethyl ether recrystallized from ethyl acetate

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a solution of 55.8 g of N-(2-methoxyethyl)glycine tert-butyl ester in 200 ml of benzene was added 63.8 g of benzyl alcohol and 72.9 g of p-toluenesulfonic acid monohydrate. The mixture was heated at reflux for 10 hours with the continuous removal of water through a Dean-Stark water trap. At the end of this period, the solution was concentrated in vacuo, and to the residue was added 300 ml of dry ethyl ether. After 2 hours at room temperature, the formed precipitate was filtered, washed with dry ethyl ether and then recrystallized from ethyl acetate to yield 99.2 g (85 percent) of N-(2-methoxyethyl)glycine benzyl ester p-toluenesulfonate, M.P. 95°-6° C. The mixture was heated At the end of this period, the solution was concentrated in vacuo to the residue was added 300 ml of dry ethyl ether the formed precipitate was filtered washed with dry ethyl ether recrystallized from ethyl acetate