Are d -erythrose and l -erythrose enantiomers or diastereomers?

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Are d -erythrose and l -erythrose enantiomers or diastereomers?

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Answer 1 · 2015-10-02T10:50:54

Enantiomers

Explanation:

Erythrose has two stereogenic centres with no plane of symmetry and therefore, it has $2^{2} = 4$ $2^2=4$ stereoisomers:
$R, R$ $R,R$
$R, S$ $R,S$
$S, S$ $S,S$
$S, R$ $S,R$

TheIUPAC names for d-erythrose and l-erythrose are: (2R,3R)-2,3,4-Trihydroxybutanal (D) and (2S,3S)-2,3,4-Trihydroxybutanal (L).
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Therefore, they are the stereoisomers $R, R$ $R,R$ and $S, S$ $S,S$ which means they are mirror images and therefore Enantiomers .

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Are d -erythrose and l -erythrose enantiomers or diastereomers?

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