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Intramolecular photoreactions of 6-(ω-alkenyl)-4-methoxy-2-pyrones

✍ Scribed by Tetsuro Shimo; Shigeki Matsuzaki; Kenichi Somekawa


Book ID
112130898
Publisher
Journal of Heterocyclic Chemistry
Year
1994
Tongue
English
Weight
297 KB
Volume
31
Category
Article
ISSN
0022-152X

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We herein report the efficient syntheses of biologically active 4-alkenyl-and 4-alkynyl-6-methyl-2-pyrones using Pd-catalysed coupling procedures. A palladium on carbon/triphenylphosphine combination is shown to be the most effective catalyst for Sonogashira cross-coupling of several terminal acetyl