Chemistry - Carboxylic acid and their Derivatives Question with Solution | TestHub

Compound (A) is a symmetric dicarboxylic acid with the molecular formula ${\mathrm{C}}_4{\mathrm{H}}_6{\mathrm{O}}_4$. It undergoes the following series of transformations to yield final products (B) and (C)

The Reaction Sequence :

(A)$\stackrel{1.{\mathrm{PCl}}_3,2.{\mathrm{CH}}_2{\mathrm{N}}_2(excess),3.{\mathrm{Ag}}_2\mathrm{O}/{\mathrm{H}}_2\mathrm{O}}{\to }$(B)

(B) $\stackrel{1.{\mathrm{LiAlH}}_4,2.\mathrm{PCC},3.dil,\mathrm{NaOH},\Delta }{\to }$(C)

Based on the structures of the resulting organic compounds (B) and (C),

Calculate the value of (x + z) – (y + w)

Where :

x = Number of sp² hybridized carbon atoms in compound (B).

y = Number of methyl (–CH₃ ) groups in compound (C).

z = Degree of unsaturation (DU) of compound (C).

w = Number of oxygen atoms present in one molecule of compound (C)