Question

Show the structures of alkenes that give the following products on oxidative cleavage with in acidic solution:

$a.C{H}_{3}C{H}_{2}C{O}_{2}H+C{O}_2$

Short answer

1. But-1-ene

Step-by-step solution

Oxidation by KMnO4

${\mathbf{KMnO}}_{\mathbf{4}}$is a strong oxidising agent. In oxidative cleavage,${\mathbf{KMnO}}_{\mathbf{4}}$leads to the formation of 1,2-diol which leads to formation of the carboxylic acid and${\mathbf{KMnO}}_{\mathbf{4}}$is converted to brown ${\mathbf{MnO}}_{\mathbf{2}}$.

The colour changes from purple to brown and diol lead to produce two adjacent alcoholic groups

Structure of alkene while undergoing oxidation

1. Formation of${\text{CH}}_{\text{3}}{\text{CH}}_{\text{2}}{\text{CO}}_{\text{2}}\text{H}\text{+}{\text{CO}}_{\text{2}}$