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Sulfuric acid-catalyzed acetolysis of anomeric ethyl 2,3,4,6-tetra-O-acetyl-d-glucopyranosides: kinetics and mechanism

✍ Scribed by Józef Kaczmarek; Magda Preyss; Harri Lönnberg; Janusz Szafranek

Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
569 KB
Volume
279
Category
Article
ISSN
0008-6215

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✦ Synopsis

Kinetics of the acetolysis

and concomitant anomerization of ethyl 2,3,4,6-tetra-Gacetyl-a-and -@-D-ghxopyranosides in a mixture of acetic anhydride, acetic acid, and sulfuric acid have been studied. The progress of the reactions was followed by gas chromatography, and the rate constants of the partial reactions were calculated on the basis of the time-dependent product distributions obtained. The mechanisms of the reactions are discussed.

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