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. Author manuscript; available in PMC: 2011 Aug 1.
Published in final edited form as: Pure Appl Chem. 2008;80(5):929–939. doi: 10.1351/pac200880050929

Scheme 6.

Scheme 6

Coupling of β-citronellene and benzaldehyde reveals a distinct reactivity pattern in the nickel-catalyzed reaction relative to a traditional Lewis acid-catalyzed carbonyl-ene reaction.