Sodium Iodide → HCID 86633057, compound

Participants

Reaction Conditions

Reaction Steps

500 mg of {(E)-2-[7-(cyclohexylamino)-1-(1-ethylpropyl)-6-fluoro-4-oxo-1,4-dihydroquinolin-3-yl]vinyl}phosphonic acid was dissolved in 10 ml of acetonitrile, and 86 mg of sodium iodide, 0.51 ml of 1,8-diazabicyclo[5.4.0]-7-undecene, 194 mg of tetrabutylammonium hydrogensulfate and 0.53 ml of chloromethyl pivalate were added in that order, followed by overnight stirring at 80° C. Aqueous saturated ammonium chloride 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. By purifying the resulting residue by silica gel column chromatography, 400 mg of bis{[(2,2-dimethylpropanoyl)oxy]methyl}{(E)-2-[7-(cyclohexylamino)-1-(1-ethylpropyl)-6-fluoro-4-oxo-1,4-dihydroquinolin-3-yl]vinyl}phosphonate (Example 25) and 190 mg of {[{(E)-2-[7-(cyclohexylamino)-1-(1-ethylpropyl)-6-fluoro-4-oxo-1,4-dihydro-3-quinolinyl]vinyl}(hydroxy)phosphoryl]oxy}methyl pivalate (Example 26) were obtained.

Provenance & Evidence