Which of the following statements is correct | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) The rate of $S_N1$ reaction depends on the stability of the carbocation intermediate formed after the departure of the leaving group $(Br^-)$.For

Vedclass · Accepted Answer

$B$ reacts faster than $A$

Vedclass · Answer

(B) The rate of $S_N1$ reaction depends on the stability of the carbocation intermediate formed after the departure of the leaving group $(Br^-)$.For compound $(A)$,the carbocation formed is a cyclopentadienyl cation,which has $4\pi$ electrons and is anti-aromatic,making it highly unstable.For compound $(B)$,the carbocation formed is a pyrylium cation,which has $6\pi$ electrons ($4$ from double bonds and $2$ from the lone pair on oxygen) and is aromatic,making it highly stable.Since the stability of the carbocation intermediate is directly proportional to the rate of $S_N1$ reaction,compound $(B)$ reacts much faster than compound $(A)$.

Which of the following statements is correct regarding the rate of hydrolysis of the compounds $(A)$ and $(B)$ by $S_N1$ reaction?

Similar Questions

Which of the following compounds is most reactive towards $S_N1$ reaction?

Which is most reactive for $S_{N}2$ reaction?

Identify the products $A$ and $B$ in the reactions :
$R-X + AgCN \longrightarrow A + AgX$
$R-X + KCN \longrightarrow B + KX$

What are $X$ and $Y$ respectively in the following reactions?

Which of the following processes does $NOT$ occur during the preparation of $CHCl_3$ from $C_2H_5OH$ and bleaching powder?

Vedclass Test Series

Exam Paper Generator

Online Exam Module