Mechanistic aspects of the Wolff-Kishner reaction. V. The cation effect on the reaction of benzophenone hydrazone in butyl carbitol and decyl alcohol |
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Authors: | H. Harry Szmant Carlos E. Alciaturi |
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Affiliation: | (1) Department of Chemistry, University of Detroit, 48221 Detroit, Michigan |
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Abstract: | The rate of the Wolff-Kishner reaction of benzophenone hydrazone in butyl carbitol increases as the cation of the alkoxide base is varied in the order K>Na>Li>Mg. The replacement of butyl carbitol by 1-decanol also accelerates the reaction, and an additional increase is caused by the presence of crown ether. On the basis of changes in the activation parameters, it is concluded that the reactivity of the hydrazone anion increases as the contact ion pair becomes more fully solvated and dissociated. |
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Keywords: | Li, Na, K, Mg cation effects solvent effect butyl carbitol n-decyl alcohol ion pairing crown ether activation parameters Wolff-Kishner reaction |
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