(a) Assign protons to the peaks in the NMR spectrum of 4, 4-dimethylcyclohex-2-en-1 one in Figure 13-30(a). Explain the splitting that gives the triplets at 1.8 and 2.4. (b) Assign protons to the peaks in the NMR spectrum of -ionone in Figure 13-30(b). Explain the splitting seen in the three multiplets at 1.5, 1.65 and
Chapter 13, Problems #8
(a) Assign protons to the peaks in the NMR spectrum of 4, 4-dimethylcyclohex-2-en-1 one in Figure 13-30(a). Explain the splitting that gives the triplets at δ 1.8 and δ 2.4.
(b) Assign protons to the peaks in the NMR spectrum of β-ionone in Figure 13-30(b). Explain the splitting seen in the three multiplets at δ 1.5, δ 1.65 and δ 2.1.Explain how you know which of these multiplets corresponds to which methylene groups in the molecule.
(b) Assign protons to the peaks in the NMR spectrum of β-ionone in Figure 13-30(b). Explain the splitting seen in the three multiplets at δ 1.5, δ 1.65 and δ 2.1.Explain how you know which of these multiplets corresponds to which methylene groups in the molecule.
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Answer
(a) The signals at 1.8 and 2.4 are triplets because each set of protons has two neighboring hydrog…View the full answer
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