Journal of Chemical and Engineering Data p. 230 (1981)
Update date:2022-08-05
Topics:
Szell, Thomas
Brand, Andrea
Ratanathanawongs, Siriwan
4-Hydroxy-3-nitro- and 2-hydroxy-5-nitroacetophenone (1 and 3), both obtained by nitrating the parent hydroxy ketone, were condensed with thiophene-α-carboxaldehyde in the presence of dilute NaOH to give the appropriate yellow thia chalcones 2, mp 147 deg C, and 4, mp 190 -191 deg C, with yields of 72.5 percent and 71 percent, respectively.The chalcones (C13H9NSO4) were characterized by elemental analysis as well as by their IR and (1)H NMR spectra.
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