The absolute configuration of is?

(2 S, 3 R)

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(2 S, 3 S)

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(2 R, 3 R)

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(2 R, 3 S)

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Solution

The correct option is C $(2 R, 3 R)$
(Refer to Image 1)
As it is anti-clockwise it should be $S$ but $- H$ is in a horizontal plane, thus it will become $R$ .
(Refer to Image 2)
It should be $S$ as its rotation is anti-clockwise but it is $R$ as $- H$ is in the horizontal plane.
So, the configuration is $2 R, 3 R$ .

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Similar questions

It is given that when (±)-2,3-dibromobutane reacts with $K O H$ , some of the products formed are:

Explain via mechanism and then choose the correct ones from the following.

Monosubstitution of (2S,3S)-2,3-dibromobutane using $O H^{-}$ yields a mixture of products.
Monosubstitution of (2S,3S)-2,3-dibromobutane using $O H^{-}$ yields a single major product.
Monosubstitution of (2R,3R)-2,3-dibromobutane using $O H^{-}$ yields a mixture of products.
Monosubstitution of (2S,3S)-2,3-dibromobutane using $O H^{-}$ yields a mixture of products.