The major product formed in the dehydrohalogenation reaction of 2 -Bromopentane is Pent 2 -ene. This product…

The major product formed in the dehydrohalogenation reaction of 2 -Bromopentane is Pent 2-ene. This product formation is based on?
  1. Saytzeff's Rule
  2. Hund's Rule
  3. Hofmann Rule
  4. Huckel's Rule

Solution

2 -bromopentane gives 2 -pentene as the major product according to Saytzeff's rule as it is more substituted alkene

CH3-CHBr-CH2-CH2-CH3→alc.KOHCH2=CH-CH2-CH2-CH3                                                                (Hofmann product, least substituted alkene)

CH3-CHBr-CH2-CH2-CH3→alc.KOHCH3-CH=CH-CH2-CH3                                                        (Saytzeff's product,  more substituted alkene)

Asked in: NEET 2021

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