+180 120 60 -60 -120 -180 -180 -120 -60 (o = 90°, =-90°) Disfavored 60 120 +180 FIGURE 2.23 A Ramachandran plot showing the values of o and w. Not all o and values are possible without collisions between atoms. The most favorable regions are shown in dark green; borderline regions are shown in light green. The structure on the right is disfavored because of steric clashes.

+180 120 60 -60 -120 -180 -180 -120 -60 (o = 90°, =-90°) Disfavored 60 120 +180 FIGURE 2.23 A Ramachandran plot showing the values of o and w. Not all o and values are possible without collisions between atoms. The most favorable regions are shown in dark green; borderline regions are shown in light green. The structure on the right is disfavored because of steric clashes.

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

Chapter20: Dienes, Conjugated Systems, And Pericyclic Reactions

Section: Chapter Questions

Problem 20.48P

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