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Consecutive Three-Component Synthesis of Ynones by Decarbonylative Sonogashira Coupling

✍ Scribed by Eugen Merkul; Thomas Oeser; Thomas J. J. Müller

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
241 KB
Volume
15
Category
Article
ISSN
0947-6539

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Six different eupomatenoids (1a-c, 1f-h) were prepared from 2,3,5-tribromobenzofuran (2) in a concise and high-yielding synthetic sequence. The overall yields vary between 29 and 60% over four to six steps. Key to the success of the syntheses is the high regioselectivity achieved in three Pd(0)-and