Pyridine → HCID 86603378、化合物

関与物質

反応手順

(2S,3S)-2-tert-Butoxycarbonylamino-3-phenyl-butyric acid (1.94 g, 6.93 mmol) and pyridine (0.63 mL, 7.74 mmol) were dissolved in dichloromethane (50 mL) at −10° C. Cyanuric fluoride (1.80 mL, 21.1 mmol) was added dropwise. The mixture was stirred for 1 hour and ice-water was added. The mixture was extracted with dichloromethane (2×). The organic extracts were washed with water, brine and dried (sodium sulfate). Evaporation of the solvents gave crude ((1S,2S)-1-fluorocarbonyl-2-phenyl-propyl)-carbamic acid tert-butyl ester (2.2 g) as a cloudy oil which was used in the next step.

情報源と証拠