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Organic Chemistry

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Stereochemistry

Question
4 out of 7
 

All are equivalent structures or representations of the compound given below, except:

image\Ch 19 Q 4.png



A
B
C
D
Ans. C The given representation is called Fischer projection. The Fischer projection is a 2-dimensional way of representing structures. To manipulate the Fischer projection, we should think in terms of 3-D. This can be done by interchanging two pairs of substituents at a time. If only one pair is interchanged, we will not get the equivalent structure. Let's say we interchanged only one pair. This will result in its enantiomer. Such an example is Choice C which is the only non-equivalent structure.