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Hydrogen-deuterium exchange in some 2,4-disubstituted thiophenes and selenophenes.

โœ Scribed by Marie-Paule Simonnin; Francois Terrier; Claude Paulmier

Book ID
104247075
Publisher
Elsevier Science
Year
1973
Tongue
French
Weight
119 KB
Volume
14
Category
Article
ISSN
0040-4039

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The effect of the concentration of the acidic component on the rates of recyclization of 2,5-dialkylfurans to thiophenes and selenophenes was studied. On the basis of the direct correlation of log k on (Ho)l and the isotope effect of the solvent it was established that the reaction proceeds via a me