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ChemInform Abstract: N-Acylpyridinium Trifluoromethanesulfonates and Tetrafluoroborates: Shuttle Reagents for the Acylation of Enantiopure Secondary Alcohols.

✍ Scribed by R. WAGNER; W. GUENTHER; E. ANDERS

Publisher
John Wiley and Sons
Year
2010
Weight
32 KB
Volume
29
Category
Article
ISSN
0931-7597

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✦ Synopsis

N-Acylpyridinium Trifluoromethanesulfonates and Tetrafluoroborates: Shuttle Reagents for the Acylation of Enantiopure Secondary Alcohols.

-Easily available, stable N-acyl-4-benzylpyridinium salts (V) are found to be efficient reagents for the conversion of chiral alcohols such as (VI) and (VIII) to their esters (VII) and (IX). Alternatively, the salts can be generated in situ from the N-acyl dihydropyridines (III) and strong protic acids.

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