Question: An unknown compound has the molecular formula C9H11Br. Its proton NMR spectrum shows the following absorptions: singlet, 7.1, integral 44 mm singlet, 2.3,

An unknown compound has the molecular formula C9H11Br. Its proton NMR spectrum shows the following absorptions:
singlet, δ 7.1, integral 44 mm
singlet, δ 2.3, integral 130 mm
singlet, δ 2.2, integral 67 mm
Propose a structure for this compound.

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