Which one of the following is a diastereomer | vedclass

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(C) Diastereomers are stereoisomers that are not mirror images of each other. For a molecule with multiple stereocenters or geometric centers,changing

Vedclass · Accepted Answer

$(R)-4$-bromo-trans-$2$-hexene

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(C) Diastereomers are stereoisomers that are not mirror images of each other. For a molecule with multiple stereocenters or geometric centers,changing the configuration at only one center results in a diastereomer. $(R)-4$-bromo-cis-$2$-hexene has two stereogenic elements: a chiral center at $C4$ (configuration $R$) and a geometric center at the double bond (configuration $cis$). Changing the configuration of the double bond from $cis$ to $trans$ while keeping the chiral center at $C4$ as $(R)$ results in $(R)-4$-bromo-trans-$2$-hexene. Since $(R)-4$-bromo-cis-$2$-hexene and $(R)-4$-bromo-trans-$2$-hexene are not mirror images,they are diastereomers.

Which one of the following is a diastereomer of $(R)-4$-bromo-cis-$2$-hexene?

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