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Stepwise mechanisms

Consider the reaction in attached document. What is a stepwise mechanism that accounts for both of the products shown. Please show me the mechanism. Show all intermediate structures and all electron flow with arrows. Also include resonance. In addition, what are the non-prefered products of electrophilic addition to the opposite end of the conjugated diene?

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See the attached graphic indicating the mechanism, along with the resonance structures that contribute to the formation of products.

The mechanism is simple. The pi ...

Solution Summary

Stepwise mechanisms and intermediate structures shown for the attached reaction.

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