Using the Woodward–Hoffmann rules, predict the stereochemistry of eachreaction.a. a [6 + 4] thermal cycloadditionb. photochemical electrocyclic ring closure of deca-1,3,5,7,9-pentaenec. a [4 + 4] photochemical cycloadditiond. a thermal [5,5] sigmatropic rearrangement

Using the Woodward–Hoffmann rules, predict the stereochemistry of eachreaction.a. a [6 + 4] thermal cycloadditionb. photochemical electrocyclic ring closure of deca-1,3,5,7,9-pentaenec. a [4 + 4] photochemical cycloadditiond. a thermal [5,5] sigmatropic rearrangement

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 54AP

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Question

Using the Woodward–Hoffmann rules, predict the stereochemistry of each
reaction.
a. a [6 + 4] thermal cycloaddition
b. photochemical electrocyclic ring closure of deca-1,3,5,7,9-pentaene
c. a [4 + 4] photochemical cycloaddition
d. a thermal [5,5] sigmatropic rearrangement

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