The 'H and "C NMR spectra of compound A are shown below. In the mass spectrum the parent ion appears at m/z = 129. In the 'H spectrum there are two nearly coincident resonances (1.01 and 1.02 ppm).

Macroscale and Microscale Organic Experiments
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ISBN:9781305577190
Author:Kenneth L. Williamson, Katherine M. Masters
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Chapter13: Mass Spectrometry
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Can someone please check my work, for B one my my friends said the structure was completely wrong please help 

1. The 'H and 1BC NMR spectra of compound A are shown below. In the mass spectrum the parent ion
appears at m/z = 129. In the 'H spectrum there are two nearly coincident resonances (1.01 and 1.02
ppm).
20.8
What is the molecular formula of A?
c Ha N
48.6
39.1
17.2
200
180
160
140
120
100
80
60
40
20
ppm
What is the structure of A?
1.02 ppm
(d, 12H)
1.01 ppm
(t, 3H)
2.47 ppm
3.02 ppm
(m, 2H)
(4, 2н)
11
10
9
8
6
4
3
2
1.
ppm
Transcribed Image Text:1. The 'H and 1BC NMR spectra of compound A are shown below. In the mass spectrum the parent ion appears at m/z = 129. In the 'H spectrum there are two nearly coincident resonances (1.01 and 1.02 ppm). 20.8 What is the molecular formula of A? c Ha N 48.6 39.1 17.2 200 180 160 140 120 100 80 60 40 20 ppm What is the structure of A? 1.02 ppm (d, 12H) 1.01 ppm (t, 3H) 2.47 ppm 3.02 ppm (m, 2H) (4, 2н) 11 10 9 8 6 4 3 2 1. ppm
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