Question

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

$b.\left(C{H}_3\right)2C=O+C{H}_{3}C{H}_{2}C{H}_{2}C{O}_{2}H$

Short answer

(b). 2 methyl pent-2-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 .

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

Structure of alkene while undergoing oxidation

(b). Formation of$C{H}_{3}C=O+C{H}_{3}C{H}_{2}C{H}_{2}C{O}_{2}H$