Acetic Acid → N-(tert-Butoxycarbonyl) Desethylene Ciprofloxacin

Participants

Reaction Conditions

Reaction Steps

In a sealed tube N-(tert-butoxycarbonyl)ethylenediamine (5 mL) was added to a solution of 7-chloro-1-cyclopropyl-6-fluoro-4-oxo-1,4-dihydro-quinoline-3-carboxylic acid (3 g) in DMSO (6 mL). The reaction mixture was stirred at 110° C. for 15 h. The reaction mixture was allowed to cool at 50° C. and was poured into ice, acetic acid was added to reach pH=5. A precipitate appeared and was separated by filtration and washed with ether to afford a 40:60 mixture of title compounds (4.4 g).

Provenance & Evidence