(Solved):   (b The molecular formula of a compound is \( \mathrm{C}_{4} \mathrm{H}_{8} \mathrm{O}_{3} ...

 

(b The molecular formula of a compound is \( \mathrm{C}_{4} \mathrm{H}_{8} \mathrm{O}_{3} \). Propose a structure for this molecule if it exhibits the following peaks. \( \delta=1.2 \) (doublet, \( 3 \mathrm{H}) \) \( 8=4.5 \) (quartet, \( 1 \mathrm{H} \) ) \( \delta=3.6 \) (singlet, 3H) \( \delta=12.5 \) (singlet, 1H) Support your structure with appropriate explanation. (7 marks) (c) I he molecular formula of a compound is \( \mathrm{C}_{12} \mathrm{H}_{14} \mathrm{O}_{2} \). The 'I \( \mathrm{NMR} \) spectral data exhibits the following peaks. Deduce the structural formula and offer an explanation in support of the structure