Synthesis and reactions of benzo[b]furo[
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V. I. Dulenko; S. V. Tolkunov
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Article
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1987
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Springer US
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English
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A method has been developed for the synthesis of 3-acetonyl-and 3-phenacylbenzo[b]furans by cyclization of l-arloxy-2,4-pentanedlones and l-phenyl-4-aryloxy-1,3-butanediones in polyphosphoric acid. Acylation of 3-acetonyl(phenyl-benzo-[b]furans with aliphatic acid anhydrides in the presence ofperchl