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27.17.3.1 Synthesis of Product Subclass 3

DOI: 10.1055/sos-SD-027-00576

Kim, S.; Yoon, J.-Y.Science of Synthesis, (200427690.

Condensations between either aldehydes or ketones and N,N-disubstituted hydrazines provide the most convenient and reliable route to N,N-disubstituted hydrazones, among which the dimethyl derivatives have the most uses. Derivatives that act as carbonyl equivalents can also be used in place of the parent carbonyl compounds. Other methods involve the N-arylation or N-alkylation of unsubstituted or N-monosubstituted hydrazones, or the nucleophilic addition of formaldehyde dialkylhydrazones to activated alkenes.


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