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Updated: Jun 26, 2026

Facile Preparation of (2Z,4E)-Dienamides by the Olefination of Electron-deficient Alkenes with Allyl Acetate
Published on: June 21, 2017
Synthesis and C-alkylation of hindered aldehyde enamines
David M Hodgson1, Christopher D Bray, Nicholas D Kindon
1Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, UK. david.hodgson@chem.ox.ac.uk
Abstract:
A new reactivity mode of hindered lithium amides with terminal epoxides is described whereby aldehyde enamines are produced via a previously unrecognized reaction pathway. Some of these aldehyde enamines display unprecedented C-alkylation reactivity toward unactivated primary and secondary alkyl halides. For comparison, the reactivity of aldehyde enamines synthesized via a traditional condensation method was examined. C- rather than N-alkylation was the dominant reaction pathway found with a range of electrophiles, making this route to alpha-alkylated aldehydes more synthetically useful than previously reported.
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