Organopalladium Chemistry

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Trimethylenemethane Palladium Catalysed Cycloadditions

NOTE: Important charges and non-bonding electrons are shown throughout the animation except during the transition state phase.


In these animations the R group is represented as a purple hydrogen. The mechanism is thought to be stepwise whereby the carbanion undergoes a conjugate addition reaction with cyclopentanone. This is followed by an attack on the Pi-allyl palladium unit by the formed enolate. The resulting product from this overall 'cycloaddition' has an exo methylene group .

Click the structures and reaction black arrows in sequence to view the 3D models and animations respectively

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