Q. How many chiral stereoisomers can be drawn for $2$-bromo-$3$-chlorobutane?
Delhi UMET/DPMTDelhi UMET/DPMT 2010
Solution:
The structure of $2$-bromo-$3$-chlorobutane is
$CH _{3}-\underset{\overset{|}{Br}}{\overset{*}{C}} H-\underset{\overset{|}{Cl}}{\overset{*}{C}} H-C H_{3}\left(C^{*}=\right.$ asymmetric carbon atom) The number of chiral stereoisomers $=2^n$
(where, $n$ = number of asymmetric carbon atoms) $=2^{2}=4$ The structure of these isomers are as
