Alanine dodecyl ester

反应条件: temp:60.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A 100 ml round bottom flask equipped with a condenser, addition funnel, thermometer and mechanical stirrer was charged with D-glucono-1,5-lactone (7.0 g, 0.04 mole) and isopropanol (30 g). The suspension was heated to 60° C. over 15 minutes. A mixture of DL-alanine dodecyl ester ptoluenesulfonate salt (16.9 g, 0.04 mole), triethylamine (4.0 g 0.04 mole) and isopropanol (20 g) were added dropwise over 15 minutes from an addition funnel. The reaction mixture was stirred rapidly for about 6 hrs and then cooled to room temperature. The white product was filtered, washed with chloroform (3×150 ml) and dried under high vacuum at 35° C. giving 12.5 g (73% yield) of N-D-gluconyl dodecyl alaninate with a melting point of 97°-98° C. and 98.8% purity. A 100 ml round bottom flask equipped with a condenser, addition funnel were added dropwise over 15 minutes from an addition funnel cooled to room temperature The white product was filtered washed with chloroform (3×150 ml) dried under high vacuum at 35° C.

反应条件: temp:60.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A 100 ml round bottom flask equipped with a condenser, addition funnel, thermometer and mechanical stirrer was charged with D-glucono-1,5-lactone (7.0 g, 0.04 mole) and isopropanol (30 g). The suspension was heated to 60° C. over 15 minutes. A mixture of DL-alanine dodecyl ester ptoluenesulfonate salt (16.9 g, 0.04 mole), triethylamine (4.0 g 0.04 mole) and isopropanol (20 g) were added dropwise over 15 minutes from an addition funnel. The reaction mixture was stirred rapidly for about 6 hrs and then cooled to room temperature. The white product was filtered, washed with chloroform (3×150 ml) and dried under high vacuum at 35° C. giving 12.5 g (73% yield) of N-D-gluconyl dodecyl alaninate with a melting point of 97°-98° C. and 98.8% purity. A 100 ml round bottom flask equipped with a condenser, addition funnel were added dropwise over 15 minutes from an addition funnel cooled to room temperature The white product was filtered washed with chloroform (3×150 ml) dried under high vacuum at 35° C.

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a stirred solution of 3 (1 g, 3.2 mmol) in acetonitrile/water (5:5 mL) was added sodium bicarbonate (0.262 g 3.2 mmol) and followed by ethanol amine (0.5 mL, 0.5 vol) at 25-30° C. The reaction mixture was stirred for 12 h at RT; the reaction was monitored by TLC. The solid obtained in the reaction mixture was filtered under vacuum, the solvent concentrated, diluted with ethyl acetate/water and stirred for 15 minutes at 25-30° C. The aqueous and organic layers were separated, and the aqueous layer was extracted with ethyl acetate (2×10 mL). The combined organic layers were washed with brine solution. The organic layer was dried over Na2SO4 and concentrated under vacuum to afford crude 64 (0.9 g, yield: 95%) as a liquid The solid obtained in the reaction mixture was filtered under vacuum the solvent concentrated diluted with ethyl acetate/water stirred for 15 minutes at 25-30° C The aqueous and organic layers were separated the aqueous layer was extracted with ethyl acetate (2×10 mL) The combined organic layers were washed with brine solution The organic layer was dried over Na2SO4 concentrated under vacuum

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a stirred solution of DL-alanine 1 (5 g, 56.1 mmol) in toluene (100 mL) was added dodecanol 2 (9.42 g, 50.5 mmol) in one lot, followed by pTSA (11.75 g, 61.7 mmol). After addition, the temperature of the reaction mixture was slowly raised to reflux temperature, the water was separated azeotropically, and the reaction mixture was monitored by TLC. The reaction mixture was concentrated under vacuum, the obtained residue was taken in ethyl acetate (200 mL) and washed with aqueous 5% Na2CO3 (3×50 mL) followed by brine solution. The organic layer was dried over Na2SO4 and concentrated under vacuum to afford crude dodecyl 2-aminopropanoate 3 (14.4 g, yield: 100%) as a liquid. After addition the temperature of the reaction mixture was slowly raised to reflux temperature the water was separated azeotropically The reaction mixture was concentrated under vacuum washed with aqueous 5% Na2CO3 (3×50 mL) The organic layer was dried over Na2SO4 concentrated under vacuum

反应条件: temp:60.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A 100 ml round bottom flask equipped with a condenser, addition funnel, thermometer and mechanical stirrer was charged with D-glucono-1,5-lactone (7.0 g, 0.04 mole) and isopropanol (30 g). The suspension was heated to 60° C. over 15 minutes. A mixture of DL-alanine dodecyl ester ptoluenesulfonate salt (16.9 g, 0.04 mole), triethylamine (4.0 g 0.04 mole) and isopropanol (20 g) were added dropwise over 15 minutes from an addition funnel. The reaction mixture was stirred rapidly for about 6 hrs and then cooled to room temperature. The white product was filtered, washed with chloroform (3×150 ml) and dried under high vacuum at 35° C. giving 12.5 g (73% yield) of N-D-gluconyl dodecyl alaninate with a melting point of 97°-98° C. and 98.8% purity. A 100 ml round bottom flask equipped with a condenser, addition funnel were added dropwise over 15 minutes from an addition funnel cooled to room temperature The white product was filtered washed with chloroform (3×150 ml) dried under high vacuum at 35° C.