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Palladium-catalyzed coupling of aryl triflates with organostannanes

โœ Scribed by Echavarren, Antonio M.; Stille, J. K.

Book ID
120050640
Publisher
American Chemical Society
Year
1987
Tongue
English
Weight
984 KB
Volume
109
Category
Article
ISSN
0002-7863

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Palladium-catalyzed coupling of aryl tri
Palladium-catalyzed coupling of aryl triflates with organostannanes
โœ Echavarren, Antonio M.; Stille, J. K. ๐Ÿ“‚ Article ๐Ÿ“… 1987 ๐Ÿ› American Chemical Society ๐ŸŒ English โš– 984 KB

The palladium-catalyzed coupling reaction of aryl triflates with alkyl, vinyl, acetylenic, and aryl tin reagents in the presence of lithium chloride takes place in high yields under mild conditions. However, allyltrialkyltin reagents coupled in lower yields, and unselective transfer of the allyl gro

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En01 triflates l-5, derived from the corresponding dicarbonyl compound, were coupled with tin reagents 6-8 using Pd(OAc), and PPh, as the catalyst, at 7 mole %, in 56-Y 1% yield. Substituted u$ unsaturated esters, such as B, are functional moieties common to several natural products1 as well as use