• Can be used to protect alcohols as keto esters. Hydrazine reacts first with the ketone carbonyl and cleaves the ester intramolecularly by a "trigger" mechanism: J. Am. Chem. Soc., 91, 3356 (1969).
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Enantioselective ɑ-mono- or dialkylation can be effected using L-(+)-Valinol, L11300, as a chiral auxiliary: J. Am. Chem. Soc., 106, 1146 (1984).