methyl (2R)-2-amino-2-(4-fluorophenyl)acetate

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

Procedure: 4 g (R)-4-fluorophenylglycine are suspended in 80 ml of methanol. While cooling with the ice bath 3.28 ml of thionyl chloride are slowly added dropwise, so that the temperature is maintained between 15° C. and 20° C. The reaction mixture is stirred for 12 hours at ambient temperature and then evaporated to dryness. 5.1 g of the product are obtained as the hydrochloride. Analytical HPLC-MS (method A): RT=0.8 min. are slowly added dropwise, so that the temperature is maintained between 15° C. and 20° C evaporated to dryness

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

Procedure: 4 g (R)-4-fluorophenylglycine are suspended in 80 ml of methanol. While cooling with the ice bath 3.28 ml of thionyl chloride are slowly added dropwise, so that the temperature is maintained between 15° C. and 20° C. The reaction mixture is stirred for 12 hours at ambient temperature and then evaporated to dryness. 5.1 g of the product are obtained as the hydrochloride. Analytical HPLC-MS (method A): RT=0.8 min. are slowly added dropwise, so that the temperature is maintained between 15° C. and 20° C evaporated to dryness

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

Procedure: 4 g (R)-4-fluorophenylglycine are suspended in 80 ml of methanol. While cooling with the ice bath 3.28 ml of thionyl chloride are slowly added dropwise, so that the temperature is maintained between 15° C. and 20° C. The reaction mixture is stirred for 12 hours at ambient temperature and then evaporated to dryness. 5.1 g of the product are obtained in the form of the hydrochloride. Analytical HPLC-MS (method A): RT=0.8 min. are slowly added dropwise, so that the temperature is maintained between 15° C. and 20° C evaporated to dryness

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

Procedure: (R)-Amino-(4-fluoro-phenyl)-acetic acid was treated with HCl gas (8 g) dissolved in methanol at room temperature for 24 hours. The reaction mixture was concentrated and aqueous sodium bicarbonate was added until the pH of the mixture remained basic. The aqueous layer was extracted three times with dichloromethane. The combined extracts were dried (Na2SO4) and concentrated afford the title compound as an oil. 1HNMR (400 MHz, CDCl3) δ 1.90 (br s, 2H), 3.67 (s, 3H), 4.58 (s, 1H), 7.00 (m, 2H), 7.30 (m, 2H). The reaction mixture was concentrated aqueous sodium bicarbonate was added until the pH of the mixture The aqueous layer was extracted three times with dichloromethane The combined extracts were dried (Na2SO4) concentrated

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

Procedure: (R)-Amino-(4-fluoro-phenyl)-acetic acid was treated with HCl gas (8 g) dissolved in methanol at room temperature for 24 hours. The reaction mixture was concentrated and aqueous sodium bicarbonate was added until the pH of the mixture remained basic. The aqueous layer was extracted three times with dichloromethane. The combined extracts were dried (Na2SO4) and concentrated afford the title compound as an oil. 1HNMR (400 MHz, CDCl3)δ 1.90 (br s, 2H), 3.67 (s, 3H), 4.58 (s, 1H), 7.00 (m, 2H), 7.30 (m, 2H). The reaction mixture was concentrated aqueous sodium bicarbonate was added until the pH of the mixture The aqueous layer was extracted three times with dichloromethane The combined extracts were dried (Na2SO4) concentrated

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

Procedure: 4 g (R)-4-fluorophenylglycine are suspended in 80 ml of methanol. While cooling with the ice bath 3.28 ml of thionyl chloride are slowly added dropwise, so that the temperature is maintained between 15° C. and 20° C. The reaction mixture is stirred for 12 hours at ambient temperature and then evaporated to dryness. 5.1 g of the product are obtained as the hydrochloride. Analytical HPLC-MS (method A): RT=0.8 min. are slowly added dropwise, so that the temperature is maintained between 15° C. and 20° C evaporated to dryness