Chemistry - Halogen Derivative Question with Solution | TestHub
In which of the following cases, the major product has been correctly shown?
Options:(select one or more)
Answer:
Solution:
Question Explanation:
The question asks to identify the correctly matched major products formed in different elimination reactions .
Concept:
Elimination reactions may follow Saytzeff or Hofmann orientation depending on the base strength and steric hindrance .
Bulky bases (t-BuO- / Me3COK) favor the Hofmann product (least substituted alkene).
Smaller or less hindered bases (EtO- , MeO- ) favor the Saytzeff product (more substituted alkene).
Solution:
(A) Should give the more substituted Saytzeff product , but the shown product does not match → Incorrect .
(B) Use of t-BuO- / Δ (bulky base, E2) favors the Hofmann product ; the product shown is Hofmann → Correct .
(C) Reaction (E2) conditions favor the Saytzeff product ; the product shown is Saytzeff → Correct .
(D) Reaction (E1) also favors the Saytzeff product ; the product shown is Saytzeff → Correct .
