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  4. Which of the following applies in this reaction? CH3-CHBr-CH2-CH3 xrightarrow[]alc KOH (i) CH3-CH=CH-CH3 major product (ii) CH2=CH-CH2-CH3 minor product

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Q. Which of the following applies in this reaction? $ C{{H}_{3}}-CHBr-C{{H}_{2}}-C{{H}_{3}}\xrightarrow[{}]{alc\,KOH} $ (i) $ C{{H}_{3}}-CH=CH-C{{H}_{3}} $ major product (ii) $ C{{H}_{2}}=CH-C{{H}_{2}}-C{{H}_{3}} $ minor product

AMUAMU 1996

Solution:

: The major product in such reaction is the alkene which is more highly branched at the doubly bonded carbon atoms. The generalisation is known as Saytzeffs rule.