Organic Chemistry

550 CHAPTER 14 NMR Spectroscopy

10 9 8765 4 3210

10 9 8765 4 3210

b.C 5 H 10 O

c.C 9 H 10 O 2

δ (ppm)

frequency

δ (ppm)

frequency

PROBLEM 25

Predict the splitting patterns for the signals given by each of the compounds in Problem 3.

PROBLEM 26

Identify the following compounds. (Relative integrals are given from left to right across the

spectrum.)

a. The spectrum of a compound with molecular formula has two singlets

with an area ratio of

b. The spectrum of a compound with molecular formula has two singlets

with an area ratio of

c. The spectrum of a compound with molecular formula has two singlets

with an area ratio of

PROBLEM 27

Describe the spectrum you would expect for each of the following compounds,

using relative chemical shifts rather than absolute chemical shifts:

1 H NMR

1:2.

(^1) H NMR C 8 H 6 O 2
2:3.
(^1) H NMR C 6 H 10 O 2
2:3.
1 H NMR C 4 H 10 O 2
Tutorial:
NMR spectrum
interpretation