Recrossing and dynamic matching effects on selectivity in a Diels-Alder reaction.
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abstract
The products from the hetero-Diels-Alder reaction of acrolein with methyl vinyl ketone arise from a single transition state and trajectory studies accurately predict the selectivity. In an extension of the dynamic matching idea of Carpenter, the product formed is determined by the direction of motion passing through the transition state. Recrossing of the cycloaddition transition state occurs extensively and decreases formation of the minor product.