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महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता १२ वी

Explain the dehydrohalogenation reaction of 2-chlorobutane.

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प्रश्न

Explain the dehydrohalogenation reaction of 2-chlorobutane.

थोडक्यात उत्तर
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उत्तर

When 2-chlorobutane is boiled with an alcoholic solution of potassium hydroxide, it undergoes the elimination of the hydrogen atoms from β-carbon and chlorine atoms from α-carbon resulting in the formation of But-2-ene and But-1-ene.

Reaction:

But according to Saytzeff's rule, in dehydrohalogenation reaction, the preferred product is that alkene which has a greater number of alkyl groups attached to doubly bonded carbon atoms.

Hence, But-2-ene is obtained as the major product in the dehydrohalogenation reaction of 2-chlorobutane.

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