Show that the [6 + 2] cyclization of hexa-1,3,5-triene with maleic anhydride is thermally forbidden but photochemicallyallowed.(e) Show the Diels–Alder product that would actually result from heating hexa-1,3,5-triene with maleic anhydride.

Show that the [6 + 2] cyclization of hexa-1,3,5-triene with maleic anhydride is thermally forbidden but photochemicallyallowed.(e) Show the Diels–Alder product that would actually result from heating hexa-1,3,5-triene with maleic anhydride.

Organic Chemistry

9th Edition

ISBN:9781305080485

Author:John E. McMurry

Publisher:John E. McMurry

Chapter14: Conjugated Compounds And Ultraviolet Spectroscopy

Section14.SE: Something Extra

Problem 24MP

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Question

Show that the [6 + 2] cyclization of hexa-1,3,5-triene with maleic anhydride is thermally forbidden but photochemically
allowed.
(e) Show the Diels–Alder product that would actually result from heating hexa-1,3,5-triene with maleic anhydride.

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