Organic Compounds Containing Halogens Question 184
Question: Consider the following anions.When attached to $ sp^{3} $ -hydridized carbon, their leaving group ability in nucleophilic substitution reaction decreases in the order:
Options:
A) $ I>II>III>IV $
B) $ I>II>IV>III $
C) $ IV>I>II>III $
D) $ IV>III>II>I $
Show Answer
Answer:
Correct Answer: B
Solution:
[b] $ CF_3-\underset{O}{\overset{O}{\mathop{\underset{||}{\overset{||}{\mathop{S}}}}}}-{O^{-}}>\underset{L.G.Ability}{\mathop{Ph-\underset{O}{\overset{O}{\mathop{\underset{||}{\overset{||}{\mathop{S}}}}}}-{O^{-}}}}>CH_3-CO{O^{-}}>Ph{O^{-}} $
BETA
