Potassium Iodide → Benzyl (4R)-4-t-butoxycarbonylamino-5-(5-cyano-2-iodophenoxy)pentanoate

Participants

Reaction Steps

8.29 g (24.3 mmol) of benzyl (4R)-4-t-butoxycarbonylamino-5-chloropentanoate, 6.9 g (28.0 mmol) of 3-hydroxy-4-iodobenzonitrile, 6.9 g (50 mmol) of potassium carbonate and 4.15 g (25 mmol) of potassium iodide were stirred together in 80 ml of DMF at 70° C. for 3 days. The solvent was evaporated, and the crude product obtained by an ordinary method with ethyl acetate as the extracting solvent was purified by the silica gel chromatography (ethyl acetate/hexane) to obtain the title compound.

Provenance & Evidence