Simun Mishra posted an Question
June 19, 2020 • 12:48 pm 30 points
  • IIT JAM
  • Chemistry (CY)

How to know which is more stable ?

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    Dinesh khalmaniya 1

    In the cyclic form of a sugar, the anomeric carbon is the carbon that was part of the carbonyl group in the straight-chain structure. When the chain converts to a ring, C-1 becomes a chiral centre.

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    Dinesh khalmaniya 1 best-answer

    in beta form -OH is at equatorial (red) while in alpha form it is axial. when all the groups are at equatorial then there is no 1,3 diaxial interactions

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    Dinesh khalmaniya 1

    At equilibrium, the beta anomer of D-glucose predominates, because the -OH group of the anomeric carbon is in the more stable equatorial position of the more stable chair structure. Inalpha-D-glucose, the -OH group on the anomeric carbon is axial. Remember, for glucose, alpha is axial!.

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    anomeric carbon means

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