Acetic Anhydride → (S)-4-(acetylamino)-5-fluoropentanoic acid, methyl ester

Participants

Reaction Conditions

Reaction Steps

0.26 ml of triethylamine and 2 ml of glacial acetic acid were mixed with 0.34 g of 4. The mixture was cooled to 0° C. and 0.21 ml of acetic anhydride was added drop-by-drop to the stirred mixture. The mixture was allowed to warm to room temperature and stirred for 30 minutes. The solvents were evaporated under reduced pressure, the residue was triturated with a mixture of ethyl acetate and ether and filtered. The filtrate was eluted through a florisil pad, using ethyl acetate as eluent. The solvent was evaporated under reduced pressure to give 6, as a brown solid.

Provenance & Evidence