methyl 3-(ethylamino)propanoate

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

Procedure: 3-Ethylamino-propionic acid methyl ester (2.41 g, 18.4 mmol) is added to a solution of 2-indanone (2.3 g, 17.33 mmol) in toluene (27 mL), and the reaction is brought to reflux for 2 hours. Toluene is removed in vacuo and the residue is dissolved in ethylene glycol (23 mL) and the resulting solution is heated to reflux for 8 hours. The reaction is allowed to cool to ambient temperature and is poured over water and extracted with dichloromethane. The organic phase is dried over magnesium sulfate and concentrated in vacuo to afford the crude title compound. The crude product is purified by silica gel chromatography (gradient of ethyl acetate in hexanes 10-100%) affording 1 g (27% yield) of the title compound. MS (m/z): 213.3 (M+1). to reflux for 2 hours Toluene is removed in vacuo the residue is dissolved in ethylene glycol (23 mL) the resulting solution is heated to reflux for 8 hours is poured over water extracted with dichloromethane The organic phase is dried over magnesium sulfate concentrated in vacuo to afford the crude title compound The crude product is purified by silica gel chromatography (gradient of ethyl acetate in hexanes 10-100%)

Conditions: temp:-20.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Methyl acrylate (5.22 g, 60.6 mmol) is dissolved in methanol (20 mL) and cooled to −20° C. Ethylamine (2 M in tetrahydrofuran, 47 mL, 94 mmol) is added via addition funnel and the reaction is allowed to stir at −20° C. for 2 hours. Solvents were then removed in vacuo and the residue is distilled under reduced pressure to afford the title compound as a colorless liquid (2.41 g, 30% yield). 1H NMR (CDCl3) 1.11 (t, 3H, J=7.02 Hz), 2.53 (t, 2H, J=6.58 Hz), 2.66 (q, 2H, J=7.02 Hz), 2.89 (t, 2H, J=6.58 Hz), 3.69 (s, 3H). Solvents were then removed in vacuo the residue is distilled under reduced pressure

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

Procedure: 3-Ethylamino-propionic acid methyl ester (2.41 g, 18.4 mmol) is added to a solution of 2-indanone (2.3 g, 17.33 mmol) in toluene (27 mL), and the reaction is brought to reflux for 2 hours. Toluene is removed in vacuo and the residue is dissolved in ethylene glycol (23 mL) and the resulting solution is heated to reflux for 8 hours. The reaction is allowed to cool to ambient temperature and is poured over water and extracted with dichloromethane. The organic phase is dried over magnesium sulfate and concentrated in vacuo to afford the crude title compound. The crude product is purified by silica gel chromatography (gradient of ethyl acetate in hexanes 10-100%) affording 1 g (27% yield) of the title compound. MS (m/z): 213.3 (M+1). to reflux for 2 hours Toluene is removed in vacuo the residue is dissolved in ethylene glycol (23 mL) the resulting solution is heated to reflux for 8 hours is poured over water extracted with dichloromethane The organic phase is dried over magnesium sulfate concentrated in vacuo to afford the crude title compound The crude product is purified by silica gel chromatography (gradient of ethyl acetate in hexanes 10-100%)

Conditions: temp:-20.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Methyl acrylate (5.22 g, 60.6 mmol) is dissolved in methanol (20 mL) and cooled to −20° C. Ethylamine (2 M in tetrahydrofuran, 47 mL, 94 mmol) is added via addition funnel and the reaction is allowed to stir at −20° C. for 2 hours. Solvents were then removed in vacuo and the residue is distilled under reduced pressure to afford the title compound as a colorless liquid (2.41 g, 30% yield). 1H NMR (CDCl3) 1.11 (t, 3H, J=7.02 Hz), 2.53 (t, 2H, J=6.58 Hz), 2.66 (q, 2H, J=7.02 Hz), 2.89 (t, 2H, J=6.58 Hz), 3.69 (s, 3H). Solvents were then removed in vacuo the residue is distilled under reduced pressure

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

Procedure: 3-Ethylamino-propionic acid methyl ester (2.41 g, 18.4 mmol) is added to a solution of 2-indanone (2.3 g, 17.33 mmol) in toluene (27 mL), and the reaction is brought to reflux for 2 hours. Toluene is removed in vacuo and the residue is dissolved in ethylene glycol (23 mL) and the resulting solution is heated to reflux for 8 hours. The reaction is allowed to cool to ambient temperature and is poured over water and extracted with dichloromethane. The organic phase is dried over magnesium sulfate and concentrated in vacuo to afford the crude title compound. The crude product is purified by silica gel chromatography (gradient of ethyl acetate in hexanes 10-100%) affording 1 g (27% yield) of the title compound. MS (m/z): 213.3 (M+1). to reflux for 2 hours Toluene is removed in vacuo the residue is dissolved in ethylene glycol (23 mL) the resulting solution is heated to reflux for 8 hours is poured over water extracted with dichloromethane The organic phase is dried over magnesium sulfate concentrated in vacuo to afford the crude title compound The crude product is purified by silica gel chromatography (gradient of ethyl acetate in hexanes 10-100%)

Conditions: temp:-20.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Methyl acrylate (5.22 g, 60.6 mmol) is dissolved in methanol (20 mL) and cooled to −20° C. Ethylamine (2 M in tetrahydrofuran, 47 mL, 94 mmol) is added via addition funnel and the reaction is allowed to stir at −20° C. for 2 hours. Solvents were then removed in vacuo and the residue is distilled under reduced pressure to afford the title compound as a colorless liquid (2.41 g, 30% yield). 1H NMR (CDCl3) δ 1.11 (t, 3H, J=7.02 Hz), 2.53 (t, 2H, J=6.58 Hz), 2.66 (q, 2H, J=7.02 Hz), 2.89 (t, 2H, J=6.58 Hz), 3.69 (s, 3H). Solvents were then removed in vacuo the residue is distilled under reduced pressure

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

Procedure: 3-Ethylamino-propionic acid methyl ester (2.41 g, 18.4 mmol) is added to a solution of 2-indanone (2.3 g, 17.33 mmol) in toluene (27 mL), and the reaction is brought to reflux for 2 hours. Toluene is removed in vacuo and the residue is dissolved in ethylene glycol (23 mL) and the resulting solution is heated to reflux for 8 hours. The reaction is allowed to cool to ambient temperature and is poured over water and extracted with dichloromethane. The organic phase is dried over magnesium sulfate and concentrated in vacuo to afford the crude title compound. The crude product is purified by silica gel chromatography (gradient of ethyl acetate in hexanes 10-100%) affording 1 g (27% yield) of the title compound. MS (m/z): 213.3 (M+1). to reflux for 2 hours Toluene is removed in vacuo the residue is dissolved in ethylene glycol (23 mL) the resulting solution is heated to reflux for 8 hours is poured over water extracted with dichloromethane The organic phase is dried over magnesium sulfate concentrated in vacuo to afford the crude title compound The crude product is purified by silica gel chromatography (gradient of ethyl acetate in hexanes 10-100%)

Conditions: temp:-20.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Methyl acrylate (5.22 g, 60.6 mmol) is dissolved in methanol (20 mL) and cooled to −20° C. Ethylamine (2 M in tetrahydrofuran, 47 mL, 94 mmol) is added via addition funnel and the reaction is allowed to stir at −20° C. for 2 hours. Solvents were then removed in vacuo and the residue is distilled under reduced pressure to afford the title compound as a colorless liquid (2.41 g, 30% yield). 1H NMR (CDCl3) 1.11 (t, 3H, J=7.02 Hz), 2.53 (t, 2H, J=6.58 Hz), 2.66 (q, 2H, J=7.02 Hz), 2.89 (t, 2H, J=6.58 Hz), 3.69 (s, 3H). Solvents were then removed in vacuo the residue is distilled under reduced pressure