The partial ¹H NMR spectrum for ester A is as below.10(i)(ii)(iii)Hc.H₂9Ha8OCH 3765Give the approximate chemical shifts for protons H₂, H₂ and Hc.Explain the difference in chemical shift for Ha and Hc.Name the splitting pattern for Ha.

In the partial NMR spectrum of methyl acrylate, the three vinylic protons appear between 5 and 6.5…

10 На H₂ 9 Ha 8 OCH3 7 6 5 (i) (ii) (iii) Name the splitting pattern for Ha. Give the approximate chemical shifts for protons Ha, Ho and Hc. Explain the difference in chemical shift for Ha and Hc.

10 На H₂ 9 Ha 8 OCH3 7 6 5 (i) (ii) (iii) Name the splitting pattern for Ha. Give the approximate chemical shifts for protons Ha, Ho and Hc. Explain the difference in chemical shift for Ha and Hc.

Organic Chemistry

9th Edition

ISBN:9781305080485

Author:John E. McMurry

Publisher:John E. McMurry

Chapter13: Structure Determination: Nuclear Magnetic Resonance Spectroscopy

Section13.8: More Complex Spin–spin Splitting Patterns

Problem 15P: 3-Bromo-1-phenyl-1-propene shows a complex NMR spectrum in which the vinylic proton at C2 is coupled...

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Question

The partial ¹H NMR spectrum for ester A is as below.
10
(i)
(ii)
(iii)
Hc.
H₂
9
Ha
8
OCH 3
7
6
5
Give the approximate chemical shifts for protons H₂, H₂ and Hc.
Explain the difference in chemical shift for Ha and Hc.
Name the splitting pattern for Ha.

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