Consider the following sequence of reactions. | vedclass

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

Question

(D) $1$. The starting material is $n$-butyl bromide $(CH_3CH_2CH_2CH_2Br)$.$2$. Reaction with $Na$ in dry ether is the Wurtz reaction,which couples th

Vedclass · Accepted Answer

$9$

Vedclass · Answer

(D) $1$. The starting material is $n$-butyl bromide $(CH_3CH_2CH_2CH_2Br)$.$2$. Reaction with $Na$ in dry ether is the Wurtz reaction,which couples the alkyl group to form $n$-octane $(CH_3(CH_2)_6CH_3)$,so $X$ is $n$-octane.$3$. Aromatization of $n$-octane using $	ext{Cr}_2	ext{O}_3$ at $773 	ext{ K}$ and $10-20 	ext{ atm}$ leads to the formation of ethylbenzene $(Y)$.$4$. Friedel-Crafts acylation of ethylbenzene with $	ext{CH}_3	ext{COCl}$ in the presence of anhydrous $	ext{AlCl}_3$ gives $p$-methylacetophenone (or $o$-methylacetophenone,but $p$- is major) as $Z$. The structure of $p$-methylacetophenone is $CH_3-C_6H_4-COCH_3$.$5$. In $p$-methylacetophenone $(CH_3-C_6H_4-COCH_3)$:- $sp^3$ carbons: The methyl group on the ring $(1)$,the methyl group on the carbonyl $(1)$. Total $a = 2$.- $sp^2$ carbons: The $6$ carbons of the benzene ring $(6)$ and the carbonyl carbon $(1)$. Total $b = 7$.$6$. The value of $(a+b) = 2 + 7 = 9$.

Similar Questions

The total number of benzene derivatives with the molecular formula $C_6H_3Cl_3$ is:

Explain why only one mono-substitution product is possible in benzene. Provide examples of its structure and name.

Alkyl groups are $o-$ and $p-$ directing due to ..........

Which of the following statements regarding Friedel-Crafts alkylation is incorrect?

Among the following,the total number of meta-directing functional groups is $ . . . . . . $ (Integer based).
$-OCH_3, -NO_2, -CN, -CH_3, -NHCOCH_3, -COR, -OH, -COOH, -Cl$

Vedclass Test Series

Exam Paper Generator

Online Exam Module