In the given reaction,identify the product [X | vedclass

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

Question

(A) The starting material is a $2,3,4-trichlorotetrahydropyran$ derivative. The reaction involves the nucleophilic substitution of a chlorine atom by

Vedclass · Accepted Answer

Vedclass · Answer

(A) The starting material is a $2,3,4-trichlorotetrahydropyran$ derivative. The reaction involves the nucleophilic substitution of a chlorine atom by a methoxide ion $(CH_3O^-)$ derived from methanol $(CH_3OH)$.In cyclic systems containing an oxygen atom (like tetrahydropyran),the carbon atom adjacent to the oxygen (the $\alpha$-carbon) is highly susceptible to nucleophilic attack due to the stabilization of the transition state by the lone pairs on the oxygen atom (anomeric effect or simply electronic stabilization).Therefore,the chlorine atom at the position adjacent to the oxygen atom is replaced by the $-OCH_3$ group.The product $[X]$ is the $2-methoxy-3,4-dichlorotetrahydropyran$ derivative,which corresponds to option $A$.

Column-$I$	Column-$II$
$A$. $S_N1$ reaction	$1$. vic-dibromides
$B$. Chemicals in fire extinguisher	$2$. gem-dihalides
$C$. Bromination of alkenes	$3$. Racemisation
$D$. Alkylidene halides	$4$. Saytzeff rule
$E$. Elimination of $HX$ from alkyl halide	$5$. Chlorobromocarbons

In the given reaction,identify the product $[X]$:

Similar Questions

Assertion : Alkylbenzene is not prepared by Friedel-Crafts alkylation of benzene.
Reason : Alkyl halides are less reactive than acyl halides.

The major product for the following reaction is:

In the given reaction,$[X]$ will be:

In the given reaction,$[X]$ will be:

Vedclass Test Series

Exam Paper Generator

Online Exam Module

In the given reaction,identify the product $[X]$:

Similar Questions

Assertion : Alkylbenzene is not prepared by Friedel-Crafts alkylation of benzene.Reason : Alkyl halides are less reactive than acyl halides.

The major product for the following reaction is:

In the given reaction,$[X]$ will be:

In the given reaction,$[X]$ will be:

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Assertion : Alkylbenzene is not prepared by Friedel-Crafts alkylation of benzene.
Reason : Alkyl halides are less reactive than acyl halides.