Chemistry - Carbonyl compounds Question with Solution | TestHub

The molecular formulas are A = C₈H₁₄ and its hydrogenation product ${\mathrm{C}}_8{\mathrm{H}}_{16}$. Ozonolysis B is cyclopentanone, since MeMgCl/${\mathrm{H}}_2\mathrm{O}$ yields 1-methylcyclopentanol (five ring carbons plus the added methyl). B contains five carbons, leaving three for aldehyde C, hence propanal. Wittig reaction with Ph₃P=CHMe gives pent-2-ene. Its adjacent $\mathrm{C}{\mathrm{H}}_3$ and $\mathrm{C}{\mathrm{H}}_2$ groups provide 3+2=5 allylic α-H.