Abstract
Reaction of carbonyl substituted hydrazonoyl chlorides with amines usually leads to Z-configured amidrazone derivatives via nucleophilic substitution of the chlorine atom. Surprisingly, N,N-dimethylcarboxamide substituted hydrazonoyl chlorides yielded E-amidrazones when dialkylamines were used as nucleophilic reagent. The lipophilicities of the obtained amidrazones were found to be drastically reduced compared to their corresponding carboxanilides.
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