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Method for the synthesis of bisbenzo[c]pyrylium salts

✍ Scribed by V. I. Dulenko; Yu. A. Nikolyukin

Book ID: 112329630
Publisher: Springer US
Year: 1987
Tongue: English
Weight: 282 KB
Volume: 23
Category: Article
ISSN: 0009-3122
DOI: 10.1007/bf00476372

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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