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N -Alkyl-4-boronopyridinium Salts as Thermally Stable and Reusable Amide Condensation Catalysts

โœ Scribed by Maki, Toshikatsu; Ishihara, Kazuaki; Yamamoto, Hisashi


Book ID
118070974
Publisher
American Chemical Society
Year
2005
Tongue
English
Weight
138 KB
Volume
7
Category
Article
ISSN
1523-7060

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N-alkyl-4-(Nโ€ฒ,Nโ€ฒ-dialkylamino)pyridinium
โœ D.J. Brunelle; Daniel A. Singleton ๐Ÿ“‚ Article ๐Ÿ“… 1984 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 237 KB

N-Alkyl salts of 4-dialkylaminopyridines are effective phase transfer catalysts which are up to 100 times more stable than tetrabutylammonium bromide to conditions encountered in nucleophilic aromatic substitution reactions. These salts are thermally stable to over 300ยฐC, and promote reactions in no