Syntheses of some Cinnamoylcoumaran-3-ones

Chemical Laboratory. P. G. Department of Chemistry, Bhagalpur University, Bhagalpur-812 007 Manuscript received 3 March 1989, accepted 18 June 1989 Five 4'-methoxyphenyl-2-cinnamoyloxyacetophenones have been obtained by reaction of the related hydroxyacetophenones with p-methoxycinnamic acid using pyridine as a solvent and POCI3. Bromination with CuBr1 yielded the \(\mathfrak{w}\)·bromo-ester, which on Baker-Venkataraman rearrangement gave the title compounds, the structures of which were confirmed by analysis and spectral data.

Keywords

pyridine, Hydroxyacetophenones, Cinnamoylcoumaran-3-ones, All melting points were recorded in open capi��iliaries and are uncorrected., Bromination, hydroxyacetophenones, Five 4'-methoxypheny1-2-cinnanioyloxyacetophenones have been obtained, All melting points were recorded in open capi¬iliaries and are uncorrected., p-methoxycinnamic acid, Methoxypheny

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