Q. 12.27 - An Introduction to General, Organic, and Biological Chemistry

Question

Draw the condensed structural or line-angle formula for the alkene produced by each of the following dehydration reactions:

Step-by-Step Solution

Answer

a.  The condensed structural or line-angle formula for the alkene produced by dehydration of reaction ${\mathrm{CH}}_3-{\mathrm{CH}}_2-{\mathrm{CH}}_2-{\mathrm{CH}}_2-\mathrm{OH}\stackrel{{\mathrm{H}}^{+},\mathrm{heat}}{\to }$ is:-

b.   The condensed structural or line-angle formula for the alkene produced by dehydration of Cyclopentanol is:-

Cyclopentene

c. The condensed structural or line-angle formula for the alkene produced by dehydration of reaction ${\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{CH}\left(\mathrm{OH}\right){\mathrm{CH}}_2{\mathrm{CH}}_3\stackrel{{\mathrm{H}}^{+},\mathrm{heat}}{\to }$ is:-

Part(a) Step 1: Given information

We need to draw the condensed structural or line-angle formula for the alkene produced by the following dehydration reaction

${\mathrm{CH}}_3-{\mathrm{CH}}_2-{\mathrm{CH}}_2-{\mathrm{CH}}_2-\mathrm{OH} \stackrel{{\mathrm{H}}^{+},\mathrm{Heat}}{\to } ?$

Part(a) Step 2: Explanation

The reaction in which alcohol combines with protic acid to lose water molecules and generate alkenes is known as dehydration of alcohol. 

Dehydration of Butanol results in Butene. 

Part(b) Step 1: Given information

We need to draw the condensed structural or line-angle formula for the alkene produced by the following dehydration reaction

Part(b) Step 2: Explanation

The reaction in which alcohol combines with protic acid to lose water molecules and generate alkenes is known as dehydration of alcohol. 

Dehydration of $1-$Cyclopentanol results in Cyclopentene.

Part(c) Step 1: Given information

We need to draw the condensed structural or line-angle formula for the alkene produced by the following dehydration reaction:

${\mathrm{CH}}_3-{\mathrm{CH}}_2-\mathrm{CH}\left(\mathrm{OH}\right)-{\mathrm{CH}}_2-{\mathrm{CH}}_3\stackrel{{\mathrm{H}}^{+}, \mathrm{heat}}{\to }$

Part(c) Step 2: Explanation

The reaction in which alcohol combines with protic acid to lose water molecules and generate alkenes is known as dehydration of alcohol. 

Dehydration of Pentane$-3-$ol majorily gives Pent$-2-$ene