1. Consider the Diels-Alder cycloaddition reaction below. D heat H D = deuterium = 2H Draw the major regioisomer (or in other words, constitutional isomer) expected to form. Draw appropriate resonance structures and explain why only one constitutional isomer is expected to form. Discuss if this can be drawn with both groups on the dieneophile being endo or one has to be endo and the other has to be exo.

1. Consider the Diels-Alder cycloaddition reaction below. D heat H D = deuterium = 2H Draw the major regioisomer (or in other words, constitutional isomer) expected to form. Draw appropriate resonance structures and explain why only one constitutional isomer is expected to form. Discuss if this can be drawn with both groups on the dieneophile being endo or one has to be endo and the other has to be exo.

Organic Chemistry

8th Edition

ISBN:9781305580350

Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Publisher:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Chapter21: Benzene And The Concept Of Aromaticity

Section: Chapter Questions

Problem 21.44P

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