(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.