Explain why a carbonyl absorption shifts to lower frequency in an a,ß- unsaturated carbonyl compound. For example, the carbonyl absorption occurs at 1720 cm1 for cyclohexanone, and at 1685 cm1 for cyclohex-2- enone.

Explain why a carbonyl absorption shifts to lower frequency in an a,ß- unsaturated carbonyl compound. For example, the carbonyl absorption occurs at 1720 cm1 for cyclohexanone, and at 1685 cm1 for cyclohex-2- enone.

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

Chapter13: Nuclear Magnetic Resonance Spectroscopy

Section: Chapter Questions

Problem 13.27P: The 13C-NMR spectrum of 3-methyl-2-butanol shows signals at 17.88 (CH3), 18.16 (CH3), 20.01 (CH3),...

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Please see the attached image. Please explain in as much detail as possible.

Explain why a carbonyl absorption shifts to lower frequency in an a,ß-
unsaturated carbonyl compound. For example, the carbonyl absorption
occurs at 1720 cm1 for cyclohexanone, and at 1685 cm1 for cyclohex-2-
enone.

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