Do a retrosynthetic analysis on each of the following compounds, ending with the given starting materials:

(a)

(b)

Retrosynthesis is defined as a logical approach for designing an organic synthesis that involves a breaking down of target molecules into available or given starting material by the imaginary breaking of bonds.

Ozonolysis refers to an organic chemical reaction where the unsaturated bonds of alkenes, alkynes, or azo compounds are cleaved with ozone O₃.

Alkenes undergo oxidation with the help of ozone to give alcohols, aldehydes, ketones, and carboxylic acids.

Oxidation of alkynes with ozone gives acid anhydrides or diketones.

(a) The retrosynthetic analysis of reaction (a), ending with the given starting material is shown below in the figure:

(b) The retrosynthetic analysis of reaction (b), ending with the given starting material is shown below in the figure: