7-benzyloxycarbonylamino-1-ethyl-6-fluoro-4-oxo-1,4-dihydro-quinoline-3-carboxylic acid benzyl ester 在
sodium azide 、
potassium carbonate 作用下,
以
DMF (N,N-dimethyl-formamide) 为溶剂,
反应 20.5h,
生成 7-[benzyloxycarbonyl-(4-azidobutyl)-amino]-1-ethyl-6-fluoro-4-oxo-1,4-dihydro-quinoline-3-carboxylic acid benzyl ester