MDCAT Chemistry MCQ #566

2-Chlorobutane undergoes dehydrohalogenation in the presence of alcoholic KOH. According to the PTB, which alkene is the major product of this elimination reaction?

MDCAT Chemistry MCQ #566

  1. Question 1

    Q1. 2-Chlorobutane undergoes dehydrohalogenation in the presence of alcoholic KOH. According to the PTB, which alkene is the major product of this elimination reaction?

    • A) 1-Butene
    • B) 1-Butyne
    • C) 2-Butene
    • D) 2-Butyne

    Answer: 2-Butene

    Explanation: Saytzeff rule states the more substituted alkene is the major product. 1-butene is tempting but it is less stable and forms in smaller amounts.