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  4. How many stereoisomers are possible in case of 3 -chlorobutan- 2 -ol ?

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Q. How many stereoisomers are possible in case of $ 3 $ -chlorobutan- $ 2 $ -ol ?

AMUAMU 2010Alcohols Phenols and Ethers

Solution:

The structure of $3$-chlorobutan-$2$-ol is
image
$(C^{*}$= chiral carbon atom)
Since, 3-chlorobutane-2-ol contains $2$ asymmetric (chiral) carbon atoms, thus, the number of optical isomers $=2^{n}=2^{2}=4$