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Question

When an aqueous solution of D - glucose or D - mannose is treated with a base it undergoes some conversions. This conversion (isomerisation) involves


A

Enolization

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B

Tautomerization

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C

Both (a) and (b)

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D

None of the two

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Solution

The correct option is C

Both (a) and (b)


When an aqueous solution of D - Glucose , D - mannose or D - fructose is treated with a base, it undergoes enolization and a series of keto - enol tautomerization to form a mixture of the three monosaccharides (Lobry de Bruyn van Ekenstein tranformation). For reactions, consult text.


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