Question: Propose a structure for compound E, C7H12O2, which has the following 13C NMR spectral data: Compound E Broadband-decoupled 13C NMR: 19.1, 28.0, 70.5, 129.0, 129.8,

Propose a structure for compound E, C7H12O2, which has the following 13C NMR spectral data:

Compound E

Broadband-decoupled 13C NMR: 19.1, 28.0, 70.5, 129.0, 129.8, 165.8δ

DEPT-90: 28.0, 129.8 δ

DEPT-135: positive peaks at 19.1, 28.0, 129.8 δ; negative peaks at 70.5, 129.0 δ

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