2-(butylamino)acetic acid

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

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

实验步骤: A! A 32% solution of sodium hydroxide (123 ml) was added to a mixture of glycin (50 g, 0.66 mole) and butyl bromide (75 ml, 0.66 mole) in methanol (600 ml) and water (600 ml), the reaction mixture was refluxed for 24 hours, then the solvend was evaporated under vacuum. The crude was dissolved in ethanol, the salts were filtered off 3 times, and the solvent was evaporated under vacuum. The resulting crude was purified by flash chromatography (eluent: chloroform/methanol/concentrated ammonia 6:4:0.5) yielding 36 g of N-butyl-glycine. the reaction mixture was refluxed for 24 hours the solvend was evaporated under vacuum The crude was dissolved in ethanol the salts were filtered off 3 times the solvent was evaporated under vacuum The resulting crude was purified by flash chromatography (eluent: chloroform/methanol/concentrated ammonia 6:4:0.5)

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

实验步骤: The title compound was prepared by the procedure described in Example 11 using 6.5 g of 2-chloro-6-methylphenyl-isothiocyanate, 8.5 g of N-butyl glycine, 10.0 g of triethyl amine, and 150 mL of methylene chloride. Purification was achieved by flash chromatography on silica gel (methylene chloride). Crystallization from ethanol afforded the title compound (3.85 g) as a light pink solid, m.p. 97°-100° C. Anal. Calcd. for. C14H17Cl N2O S : C, 56.65; H, 5.77; N, 9.44. Found: C, 56.45; H, 5.67; N, 9.33. Mass spectrum (+FAB, [M+H]+) m/z 297. The title compound was prepared by the procedure Purification Crystallization from ethanol

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

实验步骤: A mixture of N-butyl glycine (12.0 g), 5-chloro-2-methylphenyl-isothiocyanate (9.15 g), triethyl amine (12.0 g) and chloroform (200 mL) was heated at reflux for 5 hours. The solvent was evaporated. The residue was treated with diethyl ether (400 mL). The mixture was filtered. The solid was washed with diethyl ether then discarded. The filtrate was evaporated to dryness. Crystallization from ethanol afforded the title compound (6.0 g) as a tan solid, m.p. 102°-103° C. Anal. Calcd. for. C14H17Cl N2 O S: C, 56.65; H, 5.77; N, 9.44. Found: C, 56.41; H, 5.97; N, 9.36. Mass spectrum (EI, M.+) m/z 296/298. was heated at reflux for 5 hours The solvent was evaporated The residue was treated with diethyl ether (400 mL) The mixture was filtered The solid was washed with diethyl ether The filtrate was evaporated to dryness Crystallization from ethanol

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

实验步骤: A mixture of 4-bromo-2-fluoro-nitro benzene (34 g, 0.15 mol), N-n-butyl glycine (20 g, 0.15 mol) in ethanol (600 ml), and water (150 ml) was heated to reflux for 6 hours. After cooling to room temperature, the mixture was diluted with 2N sodium hydroxide, extracted with CH2Cl2 and the pH was adjusted to 5 with 1N HCl. The mixture was extracted with CH2Cl2, the CH2Cl2 solution was dried (MgSO4) and evaporated to obtain the crude product (11 g, 22%) as a brown oil, which was used without further purification. 1H-NMR (DMSO-d6) δ 0.84 (t, J=7.30 Hz, 3H), 1.23 (m, 2H), 1.45 (m, 2H), 3.18 (t, J=7.30 Hz, 2H), 3.91 (s, 2H), 7.16 (dd, J=8.68, 1.91 Hz, 1H), 7.40 (d, J=1.94 Hz, 1H), 7.69 (d, J=8.68 Hz, 1H); MS (EI) m/z 331 (M+). was heated to reflux for 6 hours extracted with CH2Cl2 The mixture was extracted with CH2Cl2 the CH2Cl2 solution was dried (MgSO4) evaporated

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

实验步骤: A mixture of 4-bromo-2-fluoro-nitro benzene (34 g, 0.15 mol), N-n-butyl glycine (20 g, 0.15 mol) in ethanol (600 ml), and water (150 ml) was heated to reflux for 6 hours. After cooling to room temperature, the mixture was diluted with 2N sodium hydroxide, extracted with CH2Cl2 and the pH was adjusted to 5 with 1N HCl. The mixture was extracted with CH2Cl2, the CH2Cl2 solution was dried (MgSO4) and evaporated to obtain the crude product (11 g, 22%) as a brown oil, which was used without further purification. 1H-NMR (DMSO-d6) δ0.84 (t, J=7.30 Hz, 3H), 1.23 (m, 2H), 1.45 (m, 2H), 3.18 (t, J=7.30 Hz, 2H), 3.91 (s, 2H), 7.16 (dd, J=8.68, 1.91 Hz, 1H), 7.40 (d, J=1.94 Hz, 1H), 7.69 (d, J=8.68 Hz, 1H); MS (EI) m/z331 (M+). was heated to reflux for 6 hours extracted with CH2Cl2 The mixture was extracted with CH2Cl2 the CH2Cl2 solution was dried (MgSO4) evaporated

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

实验步骤: The title compound was prepared by the procedure described in Example 54 using 6.5 g of 2-chloro-6-methylphenyl-isothiocyanate, 8.5 g of N-butyl glycine, 10.0 g of triethyl amine, and 150 mL of methylene chloride. Purification was achieved by flash chromatography on silica gel (methylene chloride). Crystallization from ethanol afforded the title compound (3.85 g) as a light pink solid, m.p. 97°-100° C. Anal. Calcd. for. C14H17Cl N2O S: C, 56.65; H, 5.77; N, 9.44. Found: C, 56.45; H, 5.67; N, 9.33. Mass spectrum (+FAB, [M+H]+) m/z 297. The title compound was prepared by the procedure Purification Crystallization from ethanol

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

实验步骤: The title compound was prepared by the procedure described in Example 54 using 7.7 g of 4-fluorophenyl-isothiocyanate, 12.0 g of N-butyl glycine, 15.0 g of triethyl amine, and 250 mL of chloroform. Crystallization from ethanol afforded the title compound (5.9 g) as an off-white solid, m.p. 92°-93° C. Anal. Calcd. for. C13H15F N2O S: C, 58.62; H, 5.68; N, 10.52. Found: C, 58.23; H, 5.65; N, 10.56. Mass spectrum (EI, M.+) m/z 266. The title compound was prepared by the procedure Crystallization from ethanol

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

实验步骤: The title compound was prepared by the procedure described in Example 54 using 7.7 g of 4-fluorophenyl-isothiocyanate, 12.0 g of N-butyl glycine, 15.0 g of triethyl amine, and 250 mL of chloroform. Crystallization from ethanol afforded the title compound (5.9 g) as an off-white solid, m.p. 92°-93° C. Anal. Calcd. for. C13H15F N2O S: C, 58.62; H, 5.68; N, 10.52. Found: C, 58.23; H, 5.65; N, 10.56. Mass spectrum (EI, M.+) m/z 266. The title compound was prepared by the procedure Crystallization from ethanol

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

实验步骤: A mixture of N-butyl glycine (12.0 g), 5-chloro-2-methylphenyl-isothiocyanate (9.15 g), triethyl amine (12.0 g) and chloroform (200 mL) was heated at reflux for 5 hours. The solvent was evaporated. The residue was treated with diethyl ether (400 mL). The mixture was filtered. The solid was washed with diethyl ether then discarded. The filtrate was evaporated to dryness. Crystallization from ethanol afforded the title compound (6.0 g) as a tan solid, m.p. 102°-103° C. Anal. Calcd. for. C14H17Cl N2O S: C, 56.65; H, 5.77; N, 9.44. Found: C, 56.41; H, 5.97; N, 9.36. Mass spectrum (EI, M.+) m/z 296/298. was heated at reflux for 5 hours The solvent was evaporated The residue was treated with diethyl ether (400 mL) The mixture was filtered The solid was washed with diethyl ether The filtrate was evaporated to dryness Crystallization from ethanol

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

实验步骤: A! A 32% solution of sodium hydroxide (123 ml) was added to a mixture of glycin (50 g, 0.66 mole) and butyl bromide (75 ml, 0.66 mole) in methanol (600 ml) and water (600 ml), the reaction mixture was refluxed for 24 hours, then the solvend was evaporated under vacuum. The crude was dissolved in ethanol, the salts were filtered off 3 times, and the solvent was evaporated under vacuum. The resulting crude was purified by flash chromatography (eluent: chloroform/methanol/concentrated ammonia 6:4:0.5) yielding 36 g of N-butyl-glycine. the reaction mixture was refluxed for 24 hours the solvend was evaporated under vacuum The crude was dissolved in ethanol the salts were filtered off 3 times the solvent was evaporated under vacuum The resulting crude was purified by flash chromatography (eluent: chloroform/methanol/concentrated ammonia 6:4:0.5)