反应详情

(S)-3-((R)-2-Ethylsulfanyl-1-hydroxyethyl)pyrrolidine-1-carboxylic acid t-butyl ester (10 mg, 40 μmol) was dissolved in DMF (174 μL). NaH (1.3 mg, 54.5 μmol) was added and the mixture was stirred at room temperature for 15 minutes. 2-Chloro-6-fluorobenzotrifluoride (21.6 mg, 109 μmol) was added and the mixture was stirred at 100° C. for 1 hour. The mixture was cooled to room temperature, concentrated then dissolved in 1.2M HCl in EtOH (890 μL, 1.1 mmol) and stirred overnight at room temperature. The product was concentrated and the crude product was dissolved in 1:1 AcOH/H2O (1.5 mL) then purified by preparative HPLC to yield the title compound as a mono-TFA salt (3.4 mg, purity 97%). MS m/z: [M+H]+ calcd for C15H19ClF3NOS, 354.08. found 354.0.

1. stirringthe mixture was stirred at 100° C. for 1 hour
2. temperatureThe mixture was cooled to room temperature
3. concentrationconcentrated
4. stirringstirred overnight at room temperature
5. concentrationThe product was concentrated
6. dissolutionthe crude product was dissolved in 1:1 AcOH/H2O (1.5 mL)
7. customthen purified by preparative HPLC