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goldfiish [28.3K]
3 years ago
7

Describe where the "Reference Carbon" (the one that determines if the structure is D or L) is located in a carbohydrate with mor

e than one asymmetric carbon
Chemistry
1 answer:
tresset_1 [31]3 years ago
5 0

Answer:

Farthest from the carbonyl carbon.

Explanation:

Reference carbon that determined the absolute D and L configuration is located farthest from the carbonyl carbon.

In other words, reference carbon is that assymentric carbon which is located farthest from the carbolyl carbon and has configuration similar to D- or L-glyceraldehyde isomers.

D and L configuration is decided by the direction of -OH group attached to the reference carbon.

In L-isomer, -OH group is attached to the left side of the reference carbon and in D-isomer, -OH group is attached to the right side of the reference carbon.

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Explanation:

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DU=(Cn+1)-Hn/2-Xn/2+Nn/2

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The reaction sequence is shown below:

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