Which one of the following of 2,3-butane diol is enantiomeric?

1. $2 R, 3 R$ and $2 S, 3 S$
2. $2 S, 3 S$ and $2 S, 3 R$
3. $2 R, 3 R$ and $2 R, 3 S$
4. $2 S, 3 S$ and $2 R, 3 S$

Solution

The pairs $2 R, 3 R$-butane diol and $2 S, 3 S$-butane diol are enantiomeric.

Asked in: AP EAMCET 2010

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