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Question

The number of moles $H I O_{4}$ required in the given reaction is:

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Solution

$H I O_{4}$ reacts with vicinol diols giving two carbonyl groups by the bond cleavage. In given compound $H I O_{4}$ cleaves the bonds between carbons 2 and 3 and 5 and 6.
So, 2 moles of $H I O_{4}$ is required.

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