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N‑Heterocycles from Chromium Aminocarbenes

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journal contribution
posted on 06.03.2015, 00:00 by Martin Déry, Kevin Assouvie, Nora Heinrich, Isabelle Rajotte, Louis-Philippe D. Lefebvre, Marc-André Legault, Claude Spino
The initial [2 + 2]-cycloadduct between a chromium aminocarbene and a tethered alkene undergoes a β-hydrogen elimination very efficiently when triphenylphosphine is added as a ligand. The reaction gives cyclic enamines or homoenamines depending on the substitution on the alkene.

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