Pyridine → HCID 86604053, compound

Participants

Reaction Conditions

Reaction Steps

(S)-2-tert-Butoxycarbonylamino-3-(2-cyano-phenyl)-propionic acid (2.5 g, 8.6 mmol) and pyridine (0.68 g, 8.6 mmol) were dissolved in dichloromethane (50 mL) at 0° C. Cyanuric fluoride (1.74 mL, 12.9 mmol) was added dropwise. The mixture was stirred at 0° C. for 1 hour and then ice-water was added. The mixture was extracted with dichloromethane (2×). The organic extracts were washed with water, brine, and dried over sodium sulfate. Evaporation of the solvents gave crude [(S)-2-(2-cyano-phenyl)-1-fluorocarbonyl-ethyl]-carbamic acid tert-butyl ester as a yellow solid which was used without further purification in the next step (2.4 g).

Provenance & Evidence