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  4. Upon heating with acidic KMnO4, an organic compound produces hexan - 1,6- dioic acid as the major product. The starting compound is

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Q. Upon heating with acidic $KMnO_{4}$, an organic compound produces hexan $- 1,6-$ dioic acid as the major product. The starting compound is

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Solution:

The starting compound is cyclohexene, which upon heating with acidic $KMnO_4$ produces hexan $-1,-6- $ dioic acid as a major product.
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Note Alkene on reaction with cold, aqueous solution of $KMnO_4$ produces vicinal glycols whereas, hot acidic solution of $KMnO_4$ oxidises alkenes to ketone which further gets oxidised to acids.