تفاعل #10039

معادلة التفاعل

Potassium thioacetate

methyl (2S,4R)-4-methylsulfonyloxy-1-methyl-2-pyrrolidinecarboxylate

Ethyl acetate

sodium chloride

→

title compound

المردود 97.4%

Methyl (2S, 4S)-4-acetylthio-1-methyl-2-pyrrolidinecarboxylate

المردود 97.4%

المذيبات

ethanol water

ظروف التفاعل

المعالجة

1. 1
   workup.WAITto stand overnight at the same temperature
2. 2
   استخلاصwas then extracted
3. 3
   أخرىThe organic layer was separated from the aqueous layer, which
4. 4
   غسيلwas washed with water (10 mL)
5. 5
   أخرىThe solvent of the organic layer was removed by distillation under reduced pressure

الإجراء التجريبي

Potassium thioacetate (677 mg) was added to a solution of methyl (2S,4R)-4-methylsulfonyloxy-1-methyl-2-pyrrolidinecarboxylate (609 mg) obtained from Reference example 4 in ethanol/water (9:1) (6 ml), and the resulting mixture was stirred at 80° C. for 3 hours, and then the mixture was allowed to stand overnight at the same temperature. Ethyl acetate (20 mL) and 10% aqueous sodium chloride solution (10 mL) were added to the reaction mixture, which was then extracted. The organic layer was separated from the aqueous layer, which was washed with water (10 mL). The solvent of the organic layer was removed by distillation under reduced pressure to give the title compound (543 mg, yield 97%).

المصدر