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  4. When 2-bromopentane is heated with alcoholic solution of potassium hydroxide, the major product obtained is

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Q. When $2$-bromopentane is heated with alcoholic solution of potassium hydroxide, the major product obtained is

COMEDKCOMEDK 2014Hydrocarbons

Solution:

According to Saytzeff rule, in dehydrohalogenation reactions, the preferred product is that alkene which has the greater· number of 'alkyl groups attached to the doubly bonded carbon atoms. Thus, 2-bromoperttane gives pent-2-ene as the major product. .

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