Yu Xin-hong
2008
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0
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Journal
Chinese Journal of Synthetic Chemistry
Abstract
Levofloxacin(1) in total yield of 48.1% was synthesized from ethyl(2,3,4,5-tetrafluorobenzoyl) acetate under microwave irradiation by N,N-dimethylformamide dimethylacetal condensation,S-(+)-2-aminopropanol displacement,cyclization,hydrolysis,and finally N-methylpiperazine condensation.The structures of 1 and intermediates were determined by 1H NMR and MS.