methyl 3-(2-chloropropanoylamino)propanoate

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

Procedure: To a suspension of 3-(2-chloropropionylamino)propionic acid methyl ester (6.93 g) and potassium carbonate (4.72 g) in acetonitrile (150 mL) was added dropwise a solution of 3-(4-chloro-2-fluoro-5-mercaptophenyl)-1-methyl-6-trifluoromethyl-1H-pyrimidin-2,4-dione (11.54 g) in acetonitrile (75 mL) at 45° C. to 50° C. for 1 hour. The reaction mixture was stirred at the same temperature for 2 hours and neutralized at 5° C. with 1 N hydrochloric acid. Water and ethyl acetate were added to separate the organic layer. The aqueous layer was extracted with ethyl acetate. The combined organic layer was washed with brine, dried with magnesium sulfate, filtered, concentrated, and recrystallized with ether to give the target compound (13.00 g, yield 78%, white solid). to separate the organic layer The aqueous layer was extracted with ethyl acetate The combined organic layer was washed with brine dried with magnesium sulfate filtered concentrated recrystallized with ether to give the target compound (13.00 g, yield 78%, white solid)

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Triethylamine (1.63 g) was added to a suspension of β-alanine methyl ester hydrochloride (2.25 g) in dichloromethane (10 mL) and the reaction mixture was stirred for 30 minutes. After addition of pyridine (1.27 g) the reaction mixture was cooled to 0° C. A solution of 2-chloropropionyl chloride (2.04 g) in dichloromethane (10 mL) was added dropwise for 20 minutes. The reaction mixture was stirred for 2 hours, washed sequentially with water, 1 N hydrochloric acid and saturated sodium bicarbonate, dried with magnesium sulfate, filtered, and concentrated to give yellow oil (2.9 g, yield 93%). The reaction mixture was stirred for 2 hours washed sequentially with water, 1 N hydrochloric acid and saturated sodium bicarbonate dried with magnesium sulfate filtered concentrated

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

Procedure: To a suspension of 3-(2-chloropropionylamino)propionic acid methyl ester (6.93 g) and potassium carbonate (4.72 g) in acetonitrile (150 mL) was added dropwise a solution of 3-(4-chloro-2-fluoro-5-mercaptophenyl)-1-methyl-6-trifluoromethyl-1H-pyrimidin-2,4-dione (11.54 g) in acetonitrile (75 mL) at 45° C. to 50° C. for 1 hour. The reaction mixture was stirred at the same temperature for 2 hours and neutralized at 5° C. with 1 N hydrochloric acid. Water and ethyl acetate were added to separate the organic layer. The aqueous layer was extracted with ethyl acetate. The combined organic layer was washed with brine, dried with magnesium sulfate, filtered, concentrated, and recrystallized with ether to give the target compound (13.00 g, yield 78%, white solid). to separate the organic layer The aqueous layer was extracted with ethyl acetate The combined organic layer was washed with brine dried with magnesium sulfate filtered concentrated recrystallized with ether to give the target compound (13.00 g, yield 78%, white solid)

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Triethylamine (1.63 g) was added to a suspension of β-alanine methyl ester hydrochloride (2.25 g) in dichloromethane (10 mL) and the reaction mixture was stirred for 30 minutes. After addition of pyridine (1.27 g) the reaction mixture was cooled to 0° C. A solution of 2-chloropropionyl chloride (2.04 g) in dichloromethane (10 mL) was added dropwise for 20 minutes. The reaction mixture was stirred for 2 hours, washed sequentially with water, 1 N hydrochloric acid and saturated sodium bicarbonate, dried with magnesium sulfate, filtered, and concentrated to give yellow oil (2.9 g, yield 93%). The reaction mixture was stirred for 2 hours washed sequentially with water, 1 N hydrochloric acid and saturated sodium bicarbonate dried with magnesium sulfate filtered concentrated

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

Procedure: To a suspension of 3-(2-chloropropionylamino)propionic acid methyl ester (6.93 g) and potassium carbonate (4.72 g) in acetonitrile (150 mL) was added dropwise a solution of 3-(4-chloro-2-fluoro-5-mercaptophenyl)-1-methyl-6-trifluoromethyl-1H-pyrimidin-2,4-dione (11.54 g) in acetonitrile (75 mL) at 45° C. to 50° C. for 1 hour. The reaction mixture was stirred at the same temperature for 2 hours and neutralized at 5° C. with 1 N hydrochloric acid. Water and ethyl acetate were added to separate the organic layer. The aqueous layer was extracted with ethyl acetate. The combined organic layer was washed with brine, dried with magnesium sulfate, filtered, concentrated, and recrystallized with ether to give the target compound (13.00 g, yield 78%, white solid). to separate the organic layer The aqueous layer was extracted with ethyl acetate The combined organic layer was washed with brine dried with magnesium sulfate filtered concentrated recrystallized with ether to give the target compound (13.00 g, yield 78%, white solid)

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Triethylamine (1.63 g) was added to a suspension of β-alanine methyl ester hydrochloride (2.25 g) in dichloromethane (10 mL) and the reaction mixture was stirred for 30 minutes. After addition of pyridine (1.27 g) the reaction mixture was cooled to 0° C. A solution of 2-chloropropionyl chloride (2.04 g) in dichloromethane (10 mL) was added dropwise for 20 minutes. The reaction mixture was stirred for 2 hours, washed sequentially with water, 1 N hydrochloric acid and saturated sodium bicarbonate, dried with magnesium sulfate, filtered, and concentrated to give yellow oil (2.9 g, yield 93%). The reaction mixture was stirred for 2 hours washed sequentially with water, 1 N hydrochloric acid and saturated sodium bicarbonate dried with magnesium sulfate filtered concentrated