`2`-Iodobutane on treatment with `C_(2)H_(5)Ona//C_(2)H_(5)OH` yields but -`2`-ene as the major product. This regioselecetion is in accordance with the

Options

A. Hoffmann rule
B. Saytzeff rule
C. Markovniko rule
D. Kharasch rule

Answer

B

Explanation

`CH_(3)-underset(I)underset(|)CH-CH_(2)-CH_(3)rarrunderset("Major product")(CH_(3)CH=CHCH_(3))+underset("Minor product")(CH_(3)CH_(2)CH=CH_(2))`
Whenever an elimination occurs to give the most stable, most highly substituted alkene, we say that the elimination follows Saytezeff's rule.