Question

Number of structural isomers which can be obtained theoretically on monochlorination of 2-methylbutane is:

• A. $1$
• B. $2$
• C. $3$
• D. $4$

Answer 1

The correct option is B $2$

$C{H}_3$ $C{H}_3$ $C{H}_2$

$C{\stackrel{1}{H}}_3\stackrel{|2}{CH}-C{\stackrel{3}{H}}_2-\stackrel{4}{C}{H}_3\stackrel{\text{Mono chlorination}}{\to }C{H}_3-\stackrel{|}{C}H\stackrel{\ast }{\underset{|}{C}}HC{H}_3+C{H}_{2}Cl\stackrel{|\ast }{\underset{|}{C}}-C{H}_2-C{H}_3$

$Cl$ $H$

$d-$ and $I-$ $d-$ and $I-$

Monochlorination of $2-$methyl butane.

Chlorination at C-2 and C-4 produces no chiral compound.

Two structured isomers are formed.