Deduce the structure of (A).(A) C_{8}H_{10} | vedclass

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

Question

(B) $1$. The reaction sequence starts with $(A)$ having molecular formula $C_{8}H_{10}$.$2$. Oxidation with $KMnO_{4}$ converts alkyl side chains on a

Vedclass · Accepted Answer

Vedclass · Answer

(B) $1$. The reaction sequence starts with $(A)$ having molecular formula $C_{8}H_{10}$.$2$. Oxidation with $KMnO_{4}$ converts alkyl side chains on a benzene ring into carboxylic acid groups $(-COOH)$.$3$. $(B)$ has the formula $C_{8}H_{6}O_{4}$,which corresponds to a dicarboxylic acid (phthalic acid derivative).$4$. The final step is the bromination of $(B)$ in the presence of $Fe$ to give $(C)$ as a single product.$5$. For a dicarboxylic acid to yield only one monobrominated product,the starting material $(B)$ must be terephthalic acid (benzene$-1,4-$dicarboxylic acid),where all four remaining positions on the ring are equivalent.$6$. Therefore,$(A)$ must be $p$-xylene ($1$,$4$-dimethylbenzene),which corresponds to the structure shown in option $(B)$.

Deduce the structure of $(A)$.
$(A) \ C_{8}H_{10}$ $\xrightarrow{KMnO_{4}} (B) \ C_{8}H_{6}O_{4}$ $\xrightarrow[Fe]{Br_{2}} C_{8}H_{5}BrO_{4} (C)$ (one-product only)

Similar Questions

Meta-directing groups among the following are: $(a) -CN$,$(b) -COR$,$(c) -NHCOR$,$(d) -SO_3H$,$(e) -OCH_3$

Give the reaction for $n$-hexane reacting in the presence of a catalyst (aromatization).

In the below mentioned compounds,the decreasing order of reactivity towards electrophilic substitution is:

Which of the following compounds is not aromatic?

Which of the following represents $H$ückel's rule for aromaticity?

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Deduce the structure of $(A)$.$(A) \ C_{8}H_{10}$ $\xrightarrow{KMnO_{4}} (B) \ C_{8}H_{6}O_{4}$ $\xrightarrow[Fe]{Br_{2}} C_{8}H_{5}BrO_{4} (C)$ (one-product only)