Chlorotrimethylsilane → ethyl (2E)-5-[7-(cyclohexylamino)-1-(1-ethylpropyl)-6-fluoro-4-oxo-1,4-dihydroquinolin-3-yl]-5-hydroxypent-2-enoate

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Reaction Steps

2.0 ml of THF and 0.071 ml of chlorotrimethylsilane were added to 73 mg of zinc, followed by stirring at room temperature for 15 minutes. Then, 200 mg of ethyl (2E)-4-bromobut-2-enoate was added thereto, followed by stirring at room temperature for 30 minutes. To the reaction mixture was added 7-(cyclohexylamino)-1-(1-ethylpropyl)-6-fluoro-4-oxo-1,4-dihydroquinoline-3-carbaldehyde, followed by overnight stirring at room temperature. Water was added to the reaction mixture, followed by extraction with chloroform. The organic layer was washed with aqueous saturated sodium chloride, dried over anhydrous sodium sulfate and then evaporated under a reduced pressure. The resulting residue was purified by silica gel column chromatography to obtain 30 mg of ethyl (2E)-5-[7-(cyclohexylamino)-1-(1-ethylpropyl)-6-fluoro-4-oxo-1,4-dihydroquinolin-3-yl]-5-hydroxypent-2-enoate.

Provenance & Evidence