20. A compound with the molecular formula C4H6O2 gave the following 13CNMR spectrum. a) Propose a structure. (Hint: Find IHD first). b) Assign the peaks to the carbon atoms in the structure

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20. A compound with the molecular formula C4H6O2 gave the
following 13CNMR spectrum.
a) Propose a structure. (Hint: Find IHD first).
b) Assign the peaks to the carbon atoms in the structure
13C NMR
200
C4H602
..................................................................................................
100
8 (ppm)
180
160
140
120
(CH₂) (CH₂)
80
60
(CH₂)
40
20
0
Transcribed Image Text:20. A compound with the molecular formula C4H6O2 gave the following 13CNMR spectrum. a) Propose a structure. (Hint: Find IHD first). b) Assign the peaks to the carbon atoms in the structure 13C NMR 200 C4H602 .................................................................................................. 100 8 (ppm) 180 160 140 120 (CH₂) (CH₂) 80 60 (CH₂) 40 20 0
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