For the given reaction,if the final product i | vedclass

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

Question

(B) The dehydration of butan$-2-$ol with $H^+/H_2O$ (acid-catalyzed dehydration) yields a mixture of alkenes $(X)$.Butan$-2-$ol $\xrightarrow{H^+}$ bu

Vedclass · Accepted Answer

$3$

Vedclass · Answer

(B) The dehydration of butan$-2-$ol with $H^+/H_2O$ (acid-catalyzed dehydration) yields a mixture of alkenes $(X)$.Butan$-2-$ol $\xrightarrow{H^+}$ but$-1-$ene + but$-2-$ene (cis and trans).Thus,the mixture $X$ consists of $3$ alkenes: but$-1-$ene,cis-but$-2-$ene,and trans-but$-2-$ene.When these react with $Br_2$:$1$. But$-1-$ene gives $1,2$-dibromobutane (one chiral center,$2$ enantiomers).$2$. Cis-but$-2-$ene gives meso-$2,3$-dibromobutane ($1$ isomer).$3$. Trans-but$-2-$ene gives a racemic mixture of $(2R,3R)$- and $(2S,3S)$-$2,3$-dibromobutane ($2$ enantiomers).Total isomers = $2 + 1 + 2 = 5$ isomers of $C_4H_8Br_2$.Therefore,the number of alkenes $X$ is $3$.

For the given reaction,if the final product is a mixture of $C_4H_8Br_2$ isomers,what is the value of $X$ (the number of alkenes formed in the mixture)?

Similar Questions

Acidic dehydration of alcohol involves

Assertion $(A)$: Tertiary alcohols produce turbidity immediately with Lucas reagent.
Reason $(R)$: Lucas reagent is a $1:1$ mixture of conc. $HNO_3$ and anhydrous $ZnCl_2$.
The correct option among the following is:

Which of the following alcohols will yield alkyl chloride at once on reaction with concentrated $HCl$ and $ZnCl_2$ at room temperature?

The isomeric alcohol which has a chiral carbon atom is

What is the product formed when ethyl alcohol reacts with chlorine in the presence of $NaOH$?

Vedclass Test Series

Exam Paper Generator

Online Exam Module