Chemistry 332 - Spring 1996
Elements of Organic Chemistry II

Homework, Chapter 13 - Structure Determination


McMurry, pp 405 - 409:
Problems 13.18-20, 23, 26-36, 38-41, 49-52


1. Predict the general features of the H and 13C NMR spectra of the following compounds. Use the format of question 2 below.

a) diethyl ketone

b) p-ethylbenzoic acid

c) CH3-O-CH(CH3)-CH2-CH=O


2. Identify the following compounds based on their H NMR spectra:

a) C3H6O
2.72 ppm, area 2, quintet
4.73 ppm, area 4, triplet

b) C8H8O2
11.0 ppm, area 1, singlet
7.0 ppm, area 5, multiplet
3.0 ppm, area 2, singlet

c) C10H14
7.05 ppm, area 4, singlet
2.45 ppm, area 4, quartet
1.05 ppm, area 6, triplet

d) C3H6Br2
3.80 ppm, area 1, multiplet
3.50 ppm, area 2, doublet
1.12 ppm, area 3, doublet

e) C6H10
4.82 ppm, area 2, singlet
2.22 ppm, area 4, triplet
1.65 ppm, area 4, triplet